some events refacturing

1 files changed, 10576 insertions, 4489 deletions

diff --git a/library/fullcalendar/fullcalendar.js b/library/fullcalendar/fullcalendar.js
index 648938fee..4d17f353e 100644
--- a/library/fullcalendar/fullcalendar.js
+++ b/library/fullcalendar/fullcalendar.js
@@ -1,200 +1,8225 @@
 /*!
- * FullCalendar v1.6.0
- * Docs & License: http://arshaw.com/fullcalendar/
- * (c) 2013 Adam Shaw
+ * FullCalendar v2.5.0-beta
+ * Docs & License: http://fullcalendar.io/
+ * (c) 2015 Adam Shaw
  */
 
+(function(factory) {
+	if (typeof define === 'function' && define.amd) {
+		define([ 'jquery', 'moment' ], factory);
+	}
+	else if (typeof exports === 'object') { // Node/CommonJS
+		module.exports = factory(require('jquery'), require('moment'));
+	}
+	else {
+		factory(jQuery, moment);
+	}
+})(function($, moment) {
+
+;;
+
+var FC = $.fullCalendar = { version: "2.5.0-beta" };
+var fcViews = FC.views = {};
+
+
+$.fn.fullCalendar = function(options) {
+	var args = Array.prototype.slice.call(arguments, 1); // for a possible method call
+	var res = this; // what this function will return (this jQuery object by default)
+
+	this.each(function(i, _element) { // loop each DOM element involved
+		var element = $(_element);
+		var calendar = element.data('fullCalendar'); // get the existing calendar object (if any)
+		var singleRes; // the returned value of this single method call
+
+		// a method call
+		if (typeof options === 'string') {
+			if (calendar && $.isFunction(calendar[options])) {
+				singleRes = calendar[options].apply(calendar, args);
+				if (!i) {
+					res = singleRes; // record the first method call result
+				}
+				if (options === 'destroy') { // for the destroy method, must remove Calendar object data
+					element.removeData('fullCalendar');
+				}
+			}
+		}
+		// a new calendar initialization
+		else if (!calendar) { // don't initialize twice
+			calendar = new Calendar(element, options);
+			element.data('fullCalendar', calendar);
+			calendar.render();
+		}
+	});
+	
+	return res;
+};
+
+
+var complexOptions = [ // names of options that are objects whose properties should be combined
+	'header',
+	'buttonText',
+	'buttonIcons',
+	'themeButtonIcons'
+];
+
+
+// Merges an array of option objects into a single object
+function mergeOptions(optionObjs) {
+	return mergeProps(optionObjs, complexOptions);
+}
+
+
+// Given options specified for the calendar's constructor, massages any legacy options into a non-legacy form.
+// Converts View-Option-Hashes into the View-Specific-Options format.
+function massageOverrides(input) {
+	var overrides = { views: input.views || {} }; // the output. ensure a `views` hash
+	var subObj;
+
+	// iterate through all option override properties (except `views`)
+	$.each(input, function(name, val) {
+		if (name != 'views') {
+
+			// could the value be a legacy View-Option-Hash?
+			if (
+				$.isPlainObject(val) &&
+				!/(time|duration|interval)$/i.test(name) && // exclude duration options. might be given as objects
+				$.inArray(name, complexOptions) == -1 // complex options aren't allowed to be View-Option-Hashes
+			) {
+				subObj = null;
+
+				// iterate through the properties of this possible View-Option-Hash value
+				$.each(val, function(subName, subVal) {
+
+					// is the property targeting a view?
+					if (/^(month|week|day|default|basic(Week|Day)?|agenda(Week|Day)?)$/.test(subName)) {
+						if (!overrides.views[subName]) { // ensure the view-target entry exists
+							overrides.views[subName] = {};
+						}
+						overrides.views[subName][name] = subVal; // record the value in the `views` object
+					}
+					else { // a non-View-Option-Hash property
+						if (!subObj) {
+							subObj = {};
+						}
+						subObj[subName] = subVal; // accumulate these unrelated values for later
+					}
+				});
+
+				if (subObj) { // non-View-Option-Hash properties? transfer them as-is
+					overrides[name] = subObj;
+				}
+			}
+			else {
+				overrides[name] = val; // transfer normal options as-is
+			}
+		}
+	});
+
+	return overrides;
+}
+
+;;
+
+// exports
+FC.intersectionToSeg = intersectionToSeg;
+FC.applyAll = applyAll;
+FC.debounce = debounce;
+FC.isInt = isInt;
+FC.htmlEscape = htmlEscape;
+FC.cssToStr = cssToStr;
+FC.proxy = proxy;
+FC.capitaliseFirstLetter = capitaliseFirstLetter;
+
+
+/* FullCalendar-specific DOM Utilities
+----------------------------------------------------------------------------------------------------------------------*/
+
+
+// Given the scrollbar widths of some other container, create borders/margins on rowEls in order to match the left
+// and right space that was offset by the scrollbars. A 1-pixel border first, then margin beyond that.
+function compensateScroll(rowEls, scrollbarWidths) {
+	if (scrollbarWidths.left) {
+		rowEls.css({
+			'border-left-width': 1,
+			'margin-left': scrollbarWidths.left - 1
+		});
+	}
+	if (scrollbarWidths.right) {
+		rowEls.css({
+			'border-right-width': 1,
+			'margin-right': scrollbarWidths.right - 1
+		});
+	}
+}
+
+
+// Undoes compensateScroll and restores all borders/margins
+function uncompensateScroll(rowEls) {
+	rowEls.css({
+		'margin-left': '',
+		'margin-right': '',
+		'border-left-width': '',
+		'border-right-width': ''
+	});
+}
+
+
+// Make the mouse cursor express that an event is not allowed in the current area
+function disableCursor() {
+	$('body').addClass('fc-not-allowed');
+}
+
+
+// Returns the mouse cursor to its original look
+function enableCursor() {
+	$('body').removeClass('fc-not-allowed');
+}
+
+
+// Given a total available height to fill, have `els` (essentially child rows) expand to accomodate.
+// By default, all elements that are shorter than the recommended height are expanded uniformly, not considering
+// any other els that are already too tall. if `shouldRedistribute` is on, it considers these tall rows and 
+// reduces the available height.
+function distributeHeight(els, availableHeight, shouldRedistribute) {
+
+	// *FLOORING NOTE*: we floor in certain places because zoom can give inaccurate floating-point dimensions,
+	// and it is better to be shorter than taller, to avoid creating unnecessary scrollbars.
+
+	var minOffset1 = Math.floor(availableHeight / els.length); // for non-last element
+	var minOffset2 = Math.floor(availableHeight - minOffset1 * (els.length - 1)); // for last element *FLOORING NOTE*
+	var flexEls = []; // elements that are allowed to expand. array of DOM nodes
+	var flexOffsets = []; // amount of vertical space it takes up
+	var flexHeights = []; // actual css height
+	var usedHeight = 0;
+
+	undistributeHeight(els); // give all elements their natural height
+
+	// find elements that are below the recommended height (expandable).
+	// important to query for heights in a single first pass (to avoid reflow oscillation).
+	els.each(function(i, el) {
+		var minOffset = i === els.length - 1 ? minOffset2 : minOffset1;
+		var naturalOffset = $(el).outerHeight(true);
+
+		if (naturalOffset < minOffset) {
+			flexEls.push(el);
+			flexOffsets.push(naturalOffset);
+			flexHeights.push($(el).height());
+		}
+		else {
+			// this element stretches past recommended height (non-expandable). mark the space as occupied.
+			usedHeight += naturalOffset;
+		}
+	});
+
+	// readjust the recommended height to only consider the height available to non-maxed-out rows.
+	if (shouldRedistribute) {
+		availableHeight -= usedHeight;
+		minOffset1 = Math.floor(availableHeight / flexEls.length);
+		minOffset2 = Math.floor(availableHeight - minOffset1 * (flexEls.length - 1)); // *FLOORING NOTE*
+	}
+
+	// assign heights to all expandable elements
+	$(flexEls).each(function(i, el) {
+		var minOffset = i === flexEls.length - 1 ? minOffset2 : minOffset1;
+		var naturalOffset = flexOffsets[i];
+		var naturalHeight = flexHeights[i];
+		var newHeight = minOffset - (naturalOffset - naturalHeight); // subtract the margin/padding
+
+		if (naturalOffset < minOffset) { // we check this again because redistribution might have changed things
+			$(el).height(newHeight);
+		}
+	});
+}
+
+
+// Undoes distrubuteHeight, restoring all els to their natural height
+function undistributeHeight(els) {
+	els.height('');
+}
+
+
+// Given `els`, a jQuery set of <td> cells, find the cell with the largest natural width and set the widths of all the
+// cells to be that width.
+// PREREQUISITE: if you want a cell to take up width, it needs to have a single inner element w/ display:inline
+function matchCellWidths(els) {
+	var maxInnerWidth = 0;
+
+	els.find('> *').each(function(i, innerEl) {
+		var innerWidth = $(innerEl).outerWidth();
+		if (innerWidth > maxInnerWidth) {
+			maxInnerWidth = innerWidth;
+		}
+	});
+
+	maxInnerWidth++; // sometimes not accurate of width the text needs to stay on one line. insurance
+
+	els.width(maxInnerWidth);
+
+	return maxInnerWidth;
+}
+
+
+// Turns a container element into a scroller if its contents is taller than the allotted height.
+// Returns true if the element is now a scroller, false otherwise.
+// NOTE: this method is best because it takes weird zooming dimensions into account
+function setPotentialScroller(containerEl, height) {
+	containerEl.height(height).addClass('fc-scroller');
+
+	// are scrollbars needed?
+	if (containerEl[0].scrollHeight - 1 > containerEl[0].clientHeight) { // !!! -1 because IE is often off-by-one :(
+		return true;
+	}
+
+	unsetScroller(containerEl); // undo
+	return false;
+}
+
+
+// Takes an element that might have been a scroller, and turns it back into a normal element.
+function unsetScroller(containerEl) {
+	containerEl.height('').removeClass('fc-scroller');
+}
+
+
+/* General DOM Utilities
+----------------------------------------------------------------------------------------------------------------------*/
+
+FC.getOuterRect = getOuterRect;
+FC.getClientRect = getClientRect;
+FC.getContentRect = getContentRect;
+FC.getScrollbarWidths = getScrollbarWidths;
+
+
+// borrowed from https://github.com/jquery/jquery-ui/blob/1.11.0/ui/core.js#L51
+function getScrollParent(el) {
+	var position = el.css('position'),
+		scrollParent = el.parents().filter(function() {
+			var parent = $(this);
+			return (/(auto|scroll)/).test(
+				parent.css('overflow') + parent.css('overflow-y') + parent.css('overflow-x')
+			);
+		}).eq(0);
+
+	return position === 'fixed' || !scrollParent.length ? $(el[0].ownerDocument || document) : scrollParent;
+}
+
+
+// Queries the outer bounding area of a jQuery element.
+// Returns a rectangle with absolute coordinates: left, right (exclusive), top, bottom (exclusive).
+function getOuterRect(el) {
+	var offset = el.offset();
+
+	return {
+		left: offset.left,
+		right: offset.left + el.outerWidth(),
+		top: offset.top,
+		bottom: offset.top + el.outerHeight()
+	};
+}
+
+
+// Queries the area within the margin/border/scrollbars of a jQuery element. Does not go within the padding.
+// Returns a rectangle with absolute coordinates: left, right (exclusive), top, bottom (exclusive).
+// NOTE: should use clientLeft/clientTop, but very unreliable cross-browser.
+function getClientRect(el) {
+	var offset = el.offset();
+	var scrollbarWidths = getScrollbarWidths(el);
+	var left = offset.left + getCssFloat(el, 'border-left-width') + scrollbarWidths.left;
+	var top = offset.top + getCssFloat(el, 'border-top-width') + scrollbarWidths.top;
+
+	return {
+		left: left,
+		right: left + el[0].clientWidth, // clientWidth includes padding but NOT scrollbars
+		top: top,
+		bottom: top + el[0].clientHeight // clientHeight includes padding but NOT scrollbars
+	};
+}
+
+
+// Queries the area within the margin/border/padding of a jQuery element. Assumed not to have scrollbars.
+// Returns a rectangle with absolute coordinates: left, right (exclusive), top, bottom (exclusive).
+function getContentRect(el) {
+	var offset = el.offset(); // just outside of border, margin not included
+	var left = offset.left + getCssFloat(el, 'border-left-width') + getCssFloat(el, 'padding-left');
+	var top = offset.top + getCssFloat(el, 'border-top-width') + getCssFloat(el, 'padding-top');
+
+	return {
+		left: left,
+		right: left + el.width(),
+		top: top,
+		bottom: top + el.height()
+	};
+}
+
+
+// Returns the computed left/right/top/bottom scrollbar widths for the given jQuery element.
+// NOTE: should use clientLeft/clientTop, but very unreliable cross-browser.
+function getScrollbarWidths(el) {
+	var leftRightWidth = el.innerWidth() - el[0].clientWidth; // the paddings cancel out, leaving the scrollbars
+	var widths = {
+		left: 0,
+		right: 0,
+		top: 0,
+		bottom: el.innerHeight() - el[0].clientHeight // the paddings cancel out, leaving the bottom scrollbar
+	};
+
+	if (getIsLeftRtlScrollbars() && el.css('direction') == 'rtl') { // is the scrollbar on the left side?
+		widths.left = leftRightWidth;
+	}
+	else {
+		widths.right = leftRightWidth;
+	}
+
+	return widths;
+}
+
+
+// Logic for determining if, when the element is right-to-left, the scrollbar appears on the left side
+
+var _isLeftRtlScrollbars = null;
+
+function getIsLeftRtlScrollbars() { // responsible for caching the computation
+	if (_isLeftRtlScrollbars === null) {
+		_isLeftRtlScrollbars = computeIsLeftRtlScrollbars();
+	}
+	return _isLeftRtlScrollbars;
+}
+
+function computeIsLeftRtlScrollbars() { // creates an offscreen test element, then removes it
+	var el = $('<div><div/></div>')
+		.css({
+			position: 'absolute',
+			top: -1000,
+			left: 0,
+			border: 0,
+			padding: 0,
+			overflow: 'scroll',
+			direction: 'rtl'
+		})
+		.appendTo('body');
+	var innerEl = el.children();
+	var res = innerEl.offset().left > el.offset().left; // is the inner div shifted to accommodate a left scrollbar?
+	el.remove();
+	return res;
+}
+
+
+// Retrieves a jQuery element's computed CSS value as a floating-point number.
+// If the queried value is non-numeric (ex: IE can return "medium" for border width), will just return zero.
+function getCssFloat(el, prop) {
+	return parseFloat(el.css(prop)) || 0;
+}
+
+
+// Returns a boolean whether this was a left mouse click and no ctrl key (which means right click on Mac)
+function isPrimaryMouseButton(ev) {
+	return ev.which == 1 && !ev.ctrlKey;
+}
+
+
+/* Geometry
+----------------------------------------------------------------------------------------------------------------------*/
+
+FC.intersectRects = intersectRects;
+
+// Returns a new rectangle that is the intersection of the two rectangles. If they don't intersect, returns false
+function intersectRects(rect1, rect2) {
+	var res = {
+		left: Math.max(rect1.left, rect2.left),
+		right: Math.min(rect1.right, rect2.right),
+		top: Math.max(rect1.top, rect2.top),
+		bottom: Math.min(rect1.bottom, rect2.bottom)
+	};
+
+	if (res.left < res.right && res.top < res.bottom) {
+		return res;
+	}
+	return false;
+}
+
+
+// Returns a new point that will have been moved to reside within the given rectangle
+function constrainPoint(point, rect) {
+	return {
+		left: Math.min(Math.max(point.left, rect.left), rect.right),
+		top: Math.min(Math.max(point.top, rect.top), rect.bottom)
+	};
+}
+
+
+// Returns a point that is the center of the given rectangle
+function getRectCenter(rect) {
+	return {
+		left: (rect.left + rect.right) / 2,
+		top: (rect.top + rect.bottom) / 2
+	};
+}
+
+
+// Subtracts point2's coordinates from point1's coordinates, returning a delta
+function diffPoints(point1, point2) {
+	return {
+		left: point1.left - point2.left,
+		top: point1.top - point2.top
+	};
+}
+
+
+/* Object Ordering by Field
+----------------------------------------------------------------------------------------------------------------------*/
+
+FC.parseFieldSpecs = parseFieldSpecs;
+FC.compareByFieldSpecs = compareByFieldSpecs;
+FC.compareByFieldSpec = compareByFieldSpec;
+FC.flexibleCompare = flexibleCompare;
+
+
+function parseFieldSpecs(input) {
+	var specs = [];
+	var tokens = [];
+	var i, token;
+
+	if (typeof input === 'string') {
+		tokens = input.split(/\s*,\s*/);
+	}
+	else if (typeof input === 'function') {
+		tokens = [ input ];
+	}
+	else if ($.isArray(input)) {
+		tokens = input;
+	}
+
+	for (i = 0; i < tokens.length; i++) {
+		token = tokens[i];
+
+		if (typeof token === 'string') {
+			specs.push(
+				token.charAt(0) == '-' ?
+					{ field: token.substring(1), order: -1 } :
+					{ field: token, order: 1 }
+			);
+		}
+		else if (typeof token === 'function') {
+			specs.push({ func: token });
+		}
+	}
+
+	return specs;
+}
+
+
+function compareByFieldSpecs(obj1, obj2, fieldSpecs) {
+	var i;
+	var cmp;
+
+	for (i = 0; i < fieldSpecs.length; i++) {
+		cmp = compareByFieldSpec(obj1, obj2, fieldSpecs[i]);
+		if (cmp) {
+			return cmp;
+		}
+	}
+
+	return 0;
+}
+
+
+function compareByFieldSpec(obj1, obj2, fieldSpec) {
+	if (fieldSpec.func) {
+		return fieldSpec.func(obj1, obj2);
+	}
+	return flexibleCompare(obj1[fieldSpec.field], obj2[fieldSpec.field]) *
+		(fieldSpec.order || 1);
+}
+
+
+function flexibleCompare(a, b) {
+	if (!a && !b) {
+		return 0;
+	}
+	if (b == null) {
+		return -1;
+	}
+	if (a == null) {
+		return 1;
+	}
+	if ($.type(a) === 'string' || $.type(b) === 'string') {
+		return String(a).localeCompare(String(b));
+	}
+	return a - b;
+}
+
+
+/* FullCalendar-specific Misc Utilities
+----------------------------------------------------------------------------------------------------------------------*/
+
+
+// Creates a basic segment with the intersection of the two ranges. Returns undefined if no intersection.
+// Expects all dates to be normalized to the same timezone beforehand.
+// TODO: move to date section?
+function intersectionToSeg(subjectRange, constraintRange) {
+	var subjectStart = subjectRange.start;
+	var subjectEnd = subjectRange.end;
+	var constraintStart = constraintRange.start;
+	var constraintEnd = constraintRange.end;
+	var segStart, segEnd;
+	var isStart, isEnd;
+
+	if (subjectEnd > constraintStart && subjectStart < constraintEnd) { // in bounds at all?
+
+		if (subjectStart >= constraintStart) {
+			segStart = subjectStart.clone();
+			isStart = true;
+		}
+		else {
+			segStart = constraintStart.clone();
+			isStart =  false;
+		}
+
+		if (subjectEnd <= constraintEnd) {
+			segEnd = subjectEnd.clone();
+			isEnd = true;
+		}
+		else {
+			segEnd = constraintEnd.clone();
+			isEnd = false;
+		}
+
+		return {
+			start: segStart,
+			end: segEnd,
+			isStart: isStart,
+			isEnd: isEnd
+		};
+	}
+}
+
+
+/* Date Utilities
+----------------------------------------------------------------------------------------------------------------------*/
+
+FC.computeIntervalUnit = computeIntervalUnit;
+FC.divideRangeByDuration = divideRangeByDuration;
+FC.divideDurationByDuration = divideDurationByDuration;
+FC.multiplyDuration = multiplyDuration;
+FC.durationHasTime = durationHasTime;
+
+var dayIDs = [ 'sun', 'mon', 'tue', 'wed', 'thu', 'fri', 'sat' ];
+var intervalUnits = [ 'year', 'month', 'week', 'day', 'hour', 'minute', 'second', 'millisecond' ];
+
+
+// Diffs the two moments into a Duration where full-days are recorded first, then the remaining time.
+// Moments will have their timezones normalized.
+function diffDayTime(a, b) {
+	return moment.duration({
+		days: a.clone().stripTime().diff(b.clone().stripTime(), 'days'),
+		ms: a.time() - b.time() // time-of-day from day start. disregards timezone
+	});
+}
+
+
+// Diffs the two moments via their start-of-day (regardless of timezone). Produces whole-day durations.
+function diffDay(a, b) {
+	return moment.duration({
+		days: a.clone().stripTime().diff(b.clone().stripTime(), 'days')
+	});
+}
+
+
+// Diffs two moments, producing a duration, made of a whole-unit-increment of the given unit. Uses rounding.
+function diffByUnit(a, b, unit) {
+	return moment.duration(
+		Math.round(a.diff(b, unit, true)), // returnFloat=true
+		unit
+	);
+}
+
+
+// Computes the unit name of the largest whole-unit period of time.
+// For example, 48 hours will be "days" whereas 49 hours will be "hours".
+// Accepts start/end, a range object, or an original duration object.
+function computeIntervalUnit(start, end) {
+	var i, unit;
+	var val;
+
+	for (i = 0; i < intervalUnits.length; i++) {
+		unit = intervalUnits[i];
+		val = computeRangeAs(unit, start, end);
+
+		if (val >= 1 && isInt(val)) {
+			break;
+		}
+	}
+
+	return unit; // will be "milliseconds" if nothing else matches
+}
+
+
+// Computes the number of units (like "hours") in the given range.
+// Range can be a {start,end} object, separate start/end args, or a Duration.
+// Results are based on Moment's .as() and .diff() methods, so results can depend on internal handling
+// of month-diffing logic (which tends to vary from version to version).
+function computeRangeAs(unit, start, end) {
+
+	if (end != null) { // given start, end
+		return end.diff(start, unit, true);
+	}
+	else if (moment.isDuration(start)) { // given duration
+		return start.as(unit);
+	}
+	else { // given { start, end } range object
+		return start.end.diff(start.start, unit, true);
+	}
+}
+
+
+// Intelligently divides a range (specified by a start/end params) by a duration
+function divideRangeByDuration(start, end, dur) {
+	var months;
+
+	if (durationHasTime(dur)) {
+		return (end - start) / dur;
+	}
+	months = dur.asMonths();
+	if (Math.abs(months) >= 1 && isInt(months)) {
+		return end.diff(start, 'months', true) / months;
+	}
+	return end.diff(start, 'days', true) / dur.asDays();
+}
+
+
+// Intelligently divides one duration by another
+function divideDurationByDuration(dur1, dur2) {
+	var months1, months2;
+
+	if (durationHasTime(dur1) || durationHasTime(dur2)) {
+		return dur1 / dur2;
+	}
+	months1 = dur1.asMonths();
+	months2 = dur2.asMonths();
+	if (
+		Math.abs(months1) >= 1 && isInt(months1) &&
+		Math.abs(months2) >= 1 && isInt(months2)
+	) {
+		return months1 / months2;
+	}
+	return dur1.asDays() / dur2.asDays();
+}
+
+
+// Intelligently multiplies a duration by a number
+function multiplyDuration(dur, n) {
+	var months;
+
+	if (durationHasTime(dur)) {
+		return moment.duration(dur * n);
+	}
+	months = dur.asMonths();
+	if (Math.abs(months) >= 1 && isInt(months)) {
+		return moment.duration({ months: months * n });
+	}
+	return moment.duration({ days: dur.asDays() * n });
+}
+
+
+// Returns a boolean about whether the given duration has any time parts (hours/minutes/seconds/ms)
+function durationHasTime(dur) {
+	return Boolean(dur.hours() || dur.minutes() || dur.seconds() || dur.milliseconds());
+}
+
+
+function isNativeDate(input) {
+	return  Object.prototype.toString.call(input) === '[object Date]' || input instanceof Date;
+}
+
+
+// Returns a boolean about whether the given input is a time string, like "06:40:00" or "06:00"
+function isTimeString(str) {
+	return /^\d+\:\d+(?:\:\d+\.?(?:\d{3})?)?$/.test(str);
+}
+
+
+/* Logging and Debug
+----------------------------------------------------------------------------------------------------------------------*/
+
+FC.log = function() {
+	var console = window.console;
+
+	if (console && console.log) {
+		return console.log.apply(console, arguments);
+	}
+};
+
+FC.warn = function() {
+	var console = window.console;
+
+	if (console && console.warn) {
+		return console.warn.apply(console, arguments);
+	}
+	else {
+		return FC.log.apply(FC, arguments);
+	}
+};
+
+
+/* General Utilities
+----------------------------------------------------------------------------------------------------------------------*/
+
+var hasOwnPropMethod = {}.hasOwnProperty;
+
+
+// Merges an array of objects into a single object.
+// The second argument allows for an array of property names who's object values will be merged together.
+function mergeProps(propObjs, complexProps) {
+	var dest = {};
+	var i, name;
+	var complexObjs;
+	var j, val;
+	var props;
+
+	if (complexProps) {
+		for (i = 0; i < complexProps.length; i++) {
+			name = complexProps[i];
+			complexObjs = [];
+
+			// collect the trailing object values, stopping when a non-object is discovered
+			for (j = propObjs.length - 1; j >= 0; j--) {
+				val = propObjs[j][name];
+
+				if (typeof val === 'object') {
+					complexObjs.unshift(val);
+				}
+				else if (val !== undefined) {
+					dest[name] = val; // if there were no objects, this value will be used
+					break;
+				}
+			}
+
+			// if the trailing values were objects, use the merged value
+			if (complexObjs.length) {
+				dest[name] = mergeProps(complexObjs);
+			}
+		}
+	}
+
+	// copy values into the destination, going from last to first
+	for (i = propObjs.length - 1; i >= 0; i--) {
+		props = propObjs[i];
+
+		for (name in props) {
+			if (!(name in dest)) { // if already assigned by previous props or complex props, don't reassign
+				dest[name] = props[name];
+			}
+		}
+	}
+
+	return dest;
+}
+
+
+// Create an object that has the given prototype. Just like Object.create
+function createObject(proto) {
+	var f = function() {};
+	f.prototype = proto;
+	return new f();
+}
+
+
+function copyOwnProps(src, dest) {
+	for (var name in src) {
+		if (hasOwnProp(src, name)) {
+			dest[name] = src[name];
+		}
+	}
+}
+
+
+// Copies over certain methods with the same names as Object.prototype methods. Overcomes an IE<=8 bug:
+// https://developer.mozilla.org/en-US/docs/ECMAScript_DontEnum_attribute#JScript_DontEnum_Bug
+function copyNativeMethods(src, dest) {
+	var names = [ 'constructor', 'toString', 'valueOf' ];
+	var i, name;
+
+	for (i = 0; i < names.length; i++) {
+		name = names[i];
+
+		if (src[name] !== Object.prototype[name]) {
+			dest[name] = src[name];
+		}
+	}
+}
+
+
+function hasOwnProp(obj, name) {
+	return hasOwnPropMethod.call(obj, name);
+}
+
+
+// Is the given value a non-object non-function value?
+function isAtomic(val) {
+	return /undefined|null|boolean|number|string/.test($.type(val));
+}
+
+
+function applyAll(functions, thisObj, args) {
+	if ($.isFunction(functions)) {
+		functions = [ functions ];
+	}
+	if (functions) {
+		var i;
+		var ret;
+		for (i=0; i<functions.length; i++) {
+			ret = functions[i].apply(thisObj, args) || ret;
+		}
+		return ret;
+	}
+}
+
+
+function firstDefined() {
+	for (var i=0; i<arguments.length; i++) {
+		if (arguments[i] !== undefined) {
+			return arguments[i];
+		}
+	}
+}
+
+
+function htmlEscape(s) {
+	return (s + '').replace(/&/g, '&amp;')
+		.replace(/</g, '&lt;')
+		.replace(/>/g, '&gt;')
+		.replace(/'/g, '&#039;')
+		.replace(/"/g, '&quot;')
+		.replace(/\n/g, '<br />');
+}
+
+
+function stripHtmlEntities(text) {
+	return text.replace(/&.*?;/g, '');
+}
+
+
+// Given a hash of CSS properties, returns a string of CSS.
+// Uses property names as-is (no camel-case conversion). Will not make statements for null/undefined values.
+function cssToStr(cssProps) {
+	var statements = [];
+
+	$.each(cssProps, function(name, val) {
+		if (val != null) {
+			statements.push(name + ':' + val);
+		}
+	});
+
+	return statements.join(';');
+}
+
+
+function capitaliseFirstLetter(str) {
+	return str.charAt(0).toUpperCase() + str.slice(1);
+}
+
+
+function compareNumbers(a, b) { // for .sort()
+	return a - b;
+}
+
+
+function isInt(n) {
+	return n % 1 === 0;
+}
+
+
+// Returns a method bound to the given object context.
+// Just like one of the jQuery.proxy signatures, but without the undesired behavior of treating the same method with
+// different contexts as identical when binding/unbinding events.
+function proxy(obj, methodName) {
+	var method = obj[methodName];
+
+	return function() {
+		return method.apply(obj, arguments);
+	};
+}
+
+
+// Returns a function, that, as long as it continues to be invoked, will not
+// be triggered. The function will be called after it stops being called for
+// N milliseconds.
+// https://github.com/jashkenas/underscore/blob/1.6.0/underscore.js#L714
+function debounce(func, wait) {
+	var timeoutId;
+	var args;
+	var context;
+	var timestamp; // of most recent call
+	var later = function() {
+		var last = +new Date() - timestamp;
+		if (last < wait && last > 0) {
+			timeoutId = setTimeout(later, wait - last);
+		}
+		else {
+			timeoutId = null;
+			func.apply(context, args);
+			if (!timeoutId) {
+				context = args = null;
+			}
+		}
+	};
+
+	return function() {
+		context = this;
+		args = arguments;
+		timestamp = +new Date();
+		if (!timeoutId) {
+			timeoutId = setTimeout(later, wait);
+		}
+	};
+}
+
+;;
+
+var ambigDateOfMonthRegex = /^\s*\d{4}-\d\d$/;
+var ambigTimeOrZoneRegex =
+	/^\s*\d{4}-(?:(\d\d-\d\d)|(W\d\d$)|(W\d\d-\d)|(\d\d\d))((T| )(\d\d(:\d\d(:\d\d(\.\d+)?)?)?)?)?$/;
+var newMomentProto = moment.fn; // where we will attach our new methods
+var oldMomentProto = $.extend({}, newMomentProto); // copy of original moment methods
+var allowValueOptimization;
+var setUTCValues; // function defined below
+var setLocalValues; // function defined below
+
+
+// Creating
+// -------------------------------------------------------------------------------------------------
+
+// Creates a new moment, similar to the vanilla moment(...) constructor, but with
+// extra features (ambiguous time, enhanced formatting). When given an existing moment,
+// it will function as a clone (and retain the zone of the moment). Anything else will
+// result in a moment in the local zone.
+FC.moment = function() {
+	return makeMoment(arguments);
+};
+
+// Sames as FC.moment, but forces the resulting moment to be in the UTC timezone.
+FC.moment.utc = function() {
+	var mom = makeMoment(arguments, true);
+
+	// Force it into UTC because makeMoment doesn't guarantee it
+	// (if given a pre-existing moment for example)
+	if (mom.hasTime()) { // don't give ambiguously-timed moments a UTC zone
+		mom.utc();
+	}
+
+	return mom;
+};
+
+// Same as FC.moment, but when given an ISO8601 string, the timezone offset is preserved.
+// ISO8601 strings with no timezone offset will become ambiguously zoned.
+FC.moment.parseZone = function() {
+	return makeMoment(arguments, true, true);
+};
+
+// Builds an enhanced moment from args. When given an existing moment, it clones. When given a
+// native Date, or called with no arguments (the current time), the resulting moment will be local.
+// Anything else needs to be "parsed" (a string or an array), and will be affected by:
+//    parseAsUTC - if there is no zone information, should we parse the input in UTC?
+//    parseZone - if there is zone information, should we force the zone of the moment?
+function makeMoment(args, parseAsUTC, parseZone) {
+	var input = args[0];
+	var isSingleString = args.length == 1 && typeof input === 'string';
+	var isAmbigTime;
+	var isAmbigZone;
+	var ambigMatch;
+	var mom;
+
+	if (moment.isMoment(input)) {
+		mom = moment.apply(null, args); // clone it
+		transferAmbigs(input, mom); // the ambig flags weren't transfered with the clone
+	}
+	else if (isNativeDate(input) || input === undefined) {
+		mom = moment.apply(null, args); // will be local
+	}
+	else { // "parsing" is required
+		isAmbigTime = false;
+		isAmbigZone = false;
+
+		if (isSingleString) {
+			if (ambigDateOfMonthRegex.test(input)) {
+				// accept strings like '2014-05', but convert to the first of the month
+				input += '-01';
+				args = [ input ]; // for when we pass it on to moment's constructor
+				isAmbigTime = true;
+				isAmbigZone = true;
+			}
+			else if ((ambigMatch = ambigTimeOrZoneRegex.exec(input))) {
+				isAmbigTime = !ambigMatch[5]; // no time part?
+				isAmbigZone = true;
+			}
+		}
+		else if ($.isArray(input)) {
+			// arrays have no timezone information, so assume ambiguous zone
+			isAmbigZone = true;
+		}
+		// otherwise, probably a string with a format
+
+		if (parseAsUTC || isAmbigTime) {
+			mom = moment.utc.apply(moment, args);
+		}
+		else {
+			mom = moment.apply(null, args);
+		}
+
+		if (isAmbigTime) {
+			mom._ambigTime = true;
+			mom._ambigZone = true; // ambiguous time always means ambiguous zone
+		}
+		else if (parseZone) { // let's record the inputted zone somehow
+			if (isAmbigZone) {
+				mom._ambigZone = true;
+			}
+			else if (isSingleString) {
+				if (mom.utcOffset) {
+					mom.utcOffset(input); // if not a valid zone, will assign UTC
+				}
+				else {
+					mom.zone(input); // for moment-pre-2.9
+				}
+			}
+		}
+	}
+
+	mom._fullCalendar = true; // flag for extended functionality
+
+	return mom;
+}
+
+
+// A clone method that works with the flags related to our enhanced functionality.
+// In the future, use moment.momentProperties
+newMomentProto.clone = function() {
+	var mom = oldMomentProto.clone.apply(this, arguments);
+
+	// these flags weren't transfered with the clone
+	transferAmbigs(this, mom);
+	if (this._fullCalendar) {
+		mom._fullCalendar = true;
+	}
+
+	return mom;
+};
+
+
+// Week Number
+// -------------------------------------------------------------------------------------------------
+
+
+// Returns the week number, considering the locale's custom week number calcuation
+// `weeks` is an alias for `week`
+newMomentProto.week = newMomentProto.weeks = function(input) {
+	var weekCalc = (this._locale || this._lang) // works pre-moment-2.8
+		._fullCalendar_weekCalc;
+
+	if (input == null && typeof weekCalc === 'function') { // custom function only works for getter
+		return weekCalc(this);
+	}
+	else if (weekCalc === 'ISO') {
+		return oldMomentProto.isoWeek.apply(this, arguments); // ISO getter/setter
+	}
+
+	return oldMomentProto.week.apply(this, arguments); // local getter/setter
+};
+
+
+// Time-of-day
+// -------------------------------------------------------------------------------------------------
+
+// GETTER
+// Returns a Duration with the hours/minutes/seconds/ms values of the moment.
+// If the moment has an ambiguous time, a duration of 00:00 will be returned.
+//
+// SETTER
+// You can supply a Duration, a Moment, or a Duration-like argument.
+// When setting the time, and the moment has an ambiguous time, it then becomes unambiguous.
+newMomentProto.time = function(time) {
+
+	// Fallback to the original method (if there is one) if this moment wasn't created via FullCalendar.
+	// `time` is a generic enough method name where this precaution is necessary to avoid collisions w/ other plugins.
+	if (!this._fullCalendar) {
+		return oldMomentProto.time.apply(this, arguments);
+	}
+
+	if (time == null) { // getter
+		return moment.duration({
+			hours: this.hours(),
+			minutes: this.minutes(),
+			seconds: this.seconds(),
+			milliseconds: this.milliseconds()
+		});
+	}
+	else { // setter
+
+		this._ambigTime = false; // mark that the moment now has a time
+
+		if (!moment.isDuration(time) && !moment.isMoment(time)) {
+			time = moment.duration(time);
+		}
+
+		// The day value should cause overflow (so 24 hours becomes 00:00:00 of next day).
+		// Only for Duration times, not Moment times.
+		var dayHours = 0;
+		if (moment.isDuration(time)) {
+			dayHours = Math.floor(time.asDays()) * 24;
+		}
+
+		// We need to set the individual fields.
+		// Can't use startOf('day') then add duration. In case of DST at start of day.
+		return this.hours(dayHours + time.hours())
+			.minutes(time.minutes())
+			.seconds(time.seconds())
+			.milliseconds(time.milliseconds());
+	}
+};
+
+// Converts the moment to UTC, stripping out its time-of-day and timezone offset,
+// but preserving its YMD. A moment with a stripped time will display no time
+// nor timezone offset when .format() is called.
+newMomentProto.stripTime = function() {
+	var a;
+
+	if (!this._ambigTime) {
+
+		// get the values before any conversion happens
+		a = this.toArray(); // array of y/m/d/h/m/s/ms
+
+		// TODO: use keepLocalTime in the future
+		this.utc(); // set the internal UTC flag (will clear the ambig flags)
+		setUTCValues(this, a.slice(0, 3)); // set the year/month/date. time will be zero
+
+		// Mark the time as ambiguous. This needs to happen after the .utc() call, which might call .utcOffset(),
+		// which clears all ambig flags. Same with setUTCValues with moment-timezone.
+		this._ambigTime = true;
+		this._ambigZone = true; // if ambiguous time, also ambiguous timezone offset
+	}
+
+	return this; // for chaining
+};
+
+// Returns if the moment has a non-ambiguous time (boolean)
+newMomentProto.hasTime = function() {
+	return !this._ambigTime;
+};
+
+
+// Timezone
+// -------------------------------------------------------------------------------------------------
+
+// Converts the moment to UTC, stripping out its timezone offset, but preserving its
+// YMD and time-of-day. A moment with a stripped timezone offset will display no
+// timezone offset when .format() is called.
+// TODO: look into Moment's keepLocalTime functionality
+newMomentProto.stripZone = function() {
+	var a, wasAmbigTime;
+
+	if (!this._ambigZone) {
+
+		// get the values before any conversion happens
+		a = this.toArray(); // array of y/m/d/h/m/s/ms
+		wasAmbigTime = this._ambigTime;
+
+		this.utc(); // set the internal UTC flag (might clear the ambig flags, depending on Moment internals)
+		setUTCValues(this, a); // will set the year/month/date/hours/minutes/seconds/ms
+
+		// the above call to .utc()/.utcOffset() unfortunately might clear the ambig flags, so restore
+		this._ambigTime = wasAmbigTime || false;
+
+		// Mark the zone as ambiguous. This needs to happen after the .utc() call, which might call .utcOffset(),
+		// which clears the ambig flags. Same with setUTCValues with moment-timezone.
+		this._ambigZone = true;
+	}
+
+	return this; // for chaining
+};
+
+// Returns of the moment has a non-ambiguous timezone offset (boolean)
+newMomentProto.hasZone = function() {
+	return !this._ambigZone;
+};
+
+
+// this method implicitly marks a zone
+newMomentProto.local = function() {
+	var a = this.toArray(); // year,month,date,hours,minutes,seconds,ms as an array
+	var wasAmbigZone = this._ambigZone;
+
+	oldMomentProto.local.apply(this, arguments);
+
+	// ensure non-ambiguous
+	// this probably already happened via local() -> utcOffset(), but don't rely on Moment's internals
+	this._ambigTime = false;
+	this._ambigZone = false;
+
+	if (wasAmbigZone) {
+		// If the moment was ambiguously zoned, the date fields were stored as UTC.
+		// We want to preserve these, but in local time.
+		// TODO: look into Moment's keepLocalTime functionality
+		setLocalValues(this, a);
+	}
+
+	return this; // for chaining
+};
+
+
+// implicitly marks a zone
+newMomentProto.utc = function() {
+	oldMomentProto.utc.apply(this, arguments);
+
+	// ensure non-ambiguous
+	// this probably already happened via utc() -> utcOffset(), but don't rely on Moment's internals
+	this._ambigTime = false;
+	this._ambigZone = false;
+
+	return this;
+};
+
+
+// methods for arbitrarily manipulating timezone offset.
+// should clear time/zone ambiguity when called.
+$.each([
+	'zone', // only in moment-pre-2.9. deprecated afterwards
+	'utcOffset'
+], function(i, name) {
+	if (oldMomentProto[name]) { // original method exists?
+
+		// this method implicitly marks a zone (will probably get called upon .utc() and .local())
+		newMomentProto[name] = function(tzo) {
+
+			if (tzo != null) { // setter
+				// these assignments needs to happen before the original zone method is called.
+				// I forget why, something to do with a browser crash.
+				this._ambigTime = false;
+				this._ambigZone = false;
+			}
+
+			return oldMomentProto[name].apply(this, arguments);
+		};
+	}
+});
+
+
+// Formatting
+// -------------------------------------------------------------------------------------------------
+
+newMomentProto.format = function() {
+	if (this._fullCalendar && arguments[0]) { // an enhanced moment? and a format string provided?
+		return formatDate(this, arguments[0]); // our extended formatting
+	}
+	if (this._ambigTime) {
+		return oldMomentFormat(this, 'YYYY-MM-DD');
+	}
+	if (this._ambigZone) {
+		return oldMomentFormat(this, 'YYYY-MM-DD[T]HH:mm:ss');
+	}
+	return oldMomentProto.format.apply(this, arguments);
+};
+
+newMomentProto.toISOString = function() {
+	if (this._ambigTime) {
+		return oldMomentFormat(this, 'YYYY-MM-DD');
+	}
+	if (this._ambigZone) {
+		return oldMomentFormat(this, 'YYYY-MM-DD[T]HH:mm:ss');
+	}
+	return oldMomentProto.toISOString.apply(this, arguments);
+};
+
+
+// Querying
+// -------------------------------------------------------------------------------------------------
+
+// Is the moment within the specified range? `end` is exclusive.
+// FYI, this method is not a standard Moment method, so always do our enhanced logic.
+newMomentProto.isWithin = function(start, end) {
+	var a = commonlyAmbiguate([ this, start, end ]);
+	return a[0] >= a[1] && a[0] < a[2];
+};
+
+// When isSame is called with units, timezone ambiguity is normalized before the comparison happens.
+// If no units specified, the two moments must be identically the same, with matching ambig flags.
+newMomentProto.isSame = function(input, units) {
+	var a;
+
+	// only do custom logic if this is an enhanced moment
+	if (!this._fullCalendar) {
+		return oldMomentProto.isSame.apply(this, arguments);
+	}
+
+	if (units) {
+		a = commonlyAmbiguate([ this, input ], true); // normalize timezones but don't erase times
+		return oldMomentProto.isSame.call(a[0], a[1], units);
+	}
+	else {
+		input = FC.moment.parseZone(input); // normalize input
+		return oldMomentProto.isSame.call(this, input) &&
+			Boolean(this._ambigTime) === Boolean(input._ambigTime) &&
+			Boolean(this._ambigZone) === Boolean(input._ambigZone);
+	}
+};
+
+// Make these query methods work with ambiguous moments
+$.each([
+	'isBefore',
+	'isAfter'
+], function(i, methodName) {
+	newMomentProto[methodName] = function(input, units) {
+		var a;
+
+		// only do custom logic if this is an enhanced moment
+		if (!this._fullCalendar) {
+			return oldMomentProto[methodName].apply(this, arguments);
+		}
+
+		a = commonlyAmbiguate([ this, input ]);
+		return oldMomentProto[methodName].call(a[0], a[1], units);
+	};
+});
+
+
+// Misc Internals
+// -------------------------------------------------------------------------------------------------
+
+// given an array of moment-like inputs, return a parallel array w/ moments similarly ambiguated.
+// for example, of one moment has ambig time, but not others, all moments will have their time stripped.
+// set `preserveTime` to `true` to keep times, but only normalize zone ambiguity.
+// returns the original moments if no modifications are necessary.
+function commonlyAmbiguate(inputs, preserveTime) {
+	var anyAmbigTime = false;
+	var anyAmbigZone = false;
+	var len = inputs.length;
+	var moms = [];
+	var i, mom;
+
+	// parse inputs into real moments and query their ambig flags
+	for (i = 0; i < len; i++) {
+		mom = inputs[i];
+		if (!moment.isMoment(mom)) {
+			mom = FC.moment.parseZone(mom);
+		}
+		anyAmbigTime = anyAmbigTime || mom._ambigTime;
+		anyAmbigZone = anyAmbigZone || mom._ambigZone;
+		moms.push(mom);
+	}
+
+	// strip each moment down to lowest common ambiguity
+	// use clones to avoid modifying the original moments
+	for (i = 0; i < len; i++) {
+		mom = moms[i];
+		if (!preserveTime && anyAmbigTime && !mom._ambigTime) {
+			moms[i] = mom.clone().stripTime();
+		}
+		else if (anyAmbigZone && !mom._ambigZone) {
+			moms[i] = mom.clone().stripZone();
+		}
+	}
+
+	return moms;
+}
+
+// Transfers all the flags related to ambiguous time/zone from the `src` moment to the `dest` moment
+// TODO: look into moment.momentProperties for this.
+function transferAmbigs(src, dest) {
+	if (src._ambigTime) {
+		dest._ambigTime = true;
+	}
+	else if (dest._ambigTime) {
+		dest._ambigTime = false;
+	}
+
+	if (src._ambigZone) {
+		dest._ambigZone = true;
+	}
+	else if (dest._ambigZone) {
+		dest._ambigZone = false;
+	}
+}
+
+
+// Sets the year/month/date/etc values of the moment from the given array.
+// Inefficient because it calls each individual setter.
+function setMomentValues(mom, a) {
+	mom.year(a[0] || 0)
+		.month(a[1] || 0)
+		.date(a[2] || 0)
+		.hours(a[3] || 0)
+		.minutes(a[4] || 0)
+		.seconds(a[5] || 0)
+		.milliseconds(a[6] || 0);
+}
+
+// Can we set the moment's internal date directly?
+allowValueOptimization = '_d' in moment() && 'updateOffset' in moment;
+
+// Utility function. Accepts a moment and an array of the UTC year/month/date/etc values to set.
+// Assumes the given moment is already in UTC mode.
+setUTCValues = allowValueOptimization ? function(mom, a) {
+	// simlate what moment's accessors do
+	mom._d.setTime(Date.UTC.apply(Date, a));
+	moment.updateOffset(mom, false); // keepTime=false
+} : setMomentValues;
+
+// Utility function. Accepts a moment and an array of the local year/month/date/etc values to set.
+// Assumes the given moment is already in local mode.
+setLocalValues = allowValueOptimization ? function(mom, a) {
+	// simlate what moment's accessors do
+	mom._d.setTime(+new Date( // FYI, there is now way to apply an array of args to a constructor
+		a[0] || 0,
+		a[1] || 0,
+		a[2] || 0,
+		a[3] || 0,
+		a[4] || 0,
+		a[5] || 0,
+		a[6] || 0
+	));
+	moment.updateOffset(mom, false); // keepTime=false
+} : setMomentValues;
+
+;;
+
+// Single Date Formatting
+// -------------------------------------------------------------------------------------------------
+
+
+// call this if you want Moment's original format method to be used
+function oldMomentFormat(mom, formatStr) {
+	return oldMomentProto.format.call(mom, formatStr); // oldMomentProto defined in moment-ext.js
+}
+
+
+// Formats `date` with a Moment formatting string, but allow our non-zero areas and
+// additional token.
+function formatDate(date, formatStr) {
+	return formatDateWithChunks(date, getFormatStringChunks(formatStr));
+}
+
+
+function formatDateWithChunks(date, chunks) {
+	var s = '';
+	var i;
+
+	for (i=0; i<chunks.length; i++) {
+		s += formatDateWithChunk(date, chunks[i]);
+	}
+
+	return s;
+}
+
+
+// addition formatting tokens we want recognized
+var tokenOverrides = {
+	t: function(date) { // "a" or "p"
+		return oldMomentFormat(date, 'a').charAt(0);
+	},
+	T: function(date) { // "A" or "P"
+		return oldMomentFormat(date, 'A').charAt(0);
+	}
+};
+
+
+function formatDateWithChunk(date, chunk) {
+	var token;
+	var maybeStr;
+
+	if (typeof chunk === 'string') { // a literal string
+		return chunk;
+	}
+	else if ((token = chunk.token)) { // a token, like "YYYY"
+		if (tokenOverrides[token]) {
+			return tokenOverrides[token](date); // use our custom token
+		}
+		return oldMomentFormat(date, token);
+	}
+	else if (chunk.maybe) { // a grouping of other chunks that must be non-zero
+		maybeStr = formatDateWithChunks(date, chunk.maybe);
+		if (maybeStr.match(/[1-9]/)) {
+			return maybeStr;
+		}
+	}
+
+	return '';
+}
+
+
+// Date Range Formatting
+// -------------------------------------------------------------------------------------------------
+// TODO: make it work with timezone offset
+
+// Using a formatting string meant for a single date, generate a range string, like
+// "Sep 2 - 9 2013", that intelligently inserts a separator where the dates differ.
+// If the dates are the same as far as the format string is concerned, just return a single
+// rendering of one date, without any separator.
+function formatRange(date1, date2, formatStr, separator, isRTL) {
+	var localeData;
+
+	date1 = FC.moment.parseZone(date1);
+	date2 = FC.moment.parseZone(date2);
+
+	localeData = (date1.localeData || date1.lang).call(date1); // works with moment-pre-2.8
+
+	// Expand localized format strings, like "LL" -> "MMMM D YYYY"
+	formatStr = localeData.longDateFormat(formatStr) || formatStr;
+	// BTW, this is not important for `formatDate` because it is impossible to put custom tokens
+	// or non-zero areas in Moment's localized format strings.
+
+	separator = separator || ' - ';
+
+	return formatRangeWithChunks(
+		date1,
+		date2,
+		getFormatStringChunks(formatStr),
+		separator,
+		isRTL
+	);
+}
+FC.formatRange = formatRange; // expose
+
+
+function formatRangeWithChunks(date1, date2, chunks, separator, isRTL) {
+	var chunkStr; // the rendering of the chunk
+	var leftI;
+	var leftStr = '';
+	var rightI;
+	var rightStr = '';
+	var middleI;
+	var middleStr1 = '';
+	var middleStr2 = '';
+	var middleStr = '';
+
+	// Start at the leftmost side of the formatting string and continue until you hit a token
+	// that is not the same between dates.
+	for (leftI=0; leftI<chunks.length; leftI++) {
+		chunkStr = formatSimilarChunk(date1, date2, chunks[leftI]);
+		if (chunkStr === false) {
+			break;
+		}
+		leftStr += chunkStr;
+	}
+
+	// Similarly, start at the rightmost side of the formatting string and move left
+	for (rightI=chunks.length-1; rightI>leftI; rightI--) {
+		chunkStr = formatSimilarChunk(date1, date2, chunks[rightI]);
+		if (chunkStr === false) {
+			break;
+		}
+		rightStr = chunkStr + rightStr;
+	}
+
+	// The area in the middle is different for both of the dates.
+	// Collect them distinctly so we can jam them together later.
+	for (middleI=leftI; middleI<=rightI; middleI++) {
+		middleStr1 += formatDateWithChunk(date1, chunks[middleI]);
+		middleStr2 += formatDateWithChunk(date2, chunks[middleI]);
+	}
+
+	if (middleStr1 || middleStr2) {
+		if (isRTL) {
+			middleStr = middleStr2 + separator + middleStr1;
+		}
+		else {
+			middleStr = middleStr1 + separator + middleStr2;
+		}
+	}
+
+	return leftStr + middleStr + rightStr;
+}
+
+
+var similarUnitMap = {
+	Y: 'year',
+	M: 'month',
+	D: 'day', // day of month
+	d: 'day', // day of week
+	// prevents a separator between anything time-related...
+	A: 'second', // AM/PM
+	a: 'second', // am/pm
+	T: 'second', // A/P
+	t: 'second', // a/p
+	H: 'second', // hour (24)
+	h: 'second', // hour (12)
+	m: 'second', // minute
+	s: 'second' // second
+};
+// TODO: week maybe?
+
+
+// Given a formatting chunk, and given that both dates are similar in the regard the
+// formatting chunk is concerned, format date1 against `chunk`. Otherwise, return `false`.
+function formatSimilarChunk(date1, date2, chunk) {
+	var token;
+	var unit;
+
+	if (typeof chunk === 'string') { // a literal string
+		return chunk;
+	}
+	else if ((token = chunk.token)) {
+		unit = similarUnitMap[token.charAt(0)];
+		// are the dates the same for this unit of measurement?
+		if (unit && date1.isSame(date2, unit)) {
+			return oldMomentFormat(date1, token); // would be the same if we used `date2`
+			// BTW, don't support custom tokens
+		}
+	}
+
+	return false; // the chunk is NOT the same for the two dates
+	// BTW, don't support splitting on non-zero areas
+}
+
+
+// Chunking Utils
+// -------------------------------------------------------------------------------------------------
+
+
+var formatStringChunkCache = {};
+
+
+function getFormatStringChunks(formatStr) {
+	if (formatStr in formatStringChunkCache) {
+		return formatStringChunkCache[formatStr];
+	}
+	return (formatStringChunkCache[formatStr] = chunkFormatString(formatStr));
+}
+
+
+// Break the formatting string into an array of chunks
+function chunkFormatString(formatStr) {
+	var chunks = [];
+	var chunker = /\[([^\]]*)\]|\(([^\)]*)\)|(LTS|LT|(\w)\4*o?)|([^\w\[\(]+)/g; // TODO: more descrimination
+	var match;
+
+	while ((match = chunker.exec(formatStr))) {
+		if (match[1]) { // a literal string inside [ ... ]
+			chunks.push(match[1]);
+		}
+		else if (match[2]) { // non-zero formatting inside ( ... )
+			chunks.push({ maybe: chunkFormatString(match[2]) });
+		}
+		else if (match[3]) { // a formatting token
+			chunks.push({ token: match[3] });
+		}
+		else if (match[5]) { // an unenclosed literal string
+			chunks.push(match[5]);
+		}
+	}
+
+	return chunks;
+}
+
+;;
+
+FC.Class = Class; // export
+
+// Class that all other classes will inherit from
+function Class() { }
+
+
+// Called on a class to create a subclass.
+// Last argument contains instance methods. Any argument before the last are considered mixins.
+Class.extend = function() {
+	var len = arguments.length;
+	var i;
+	var members;
+
+	for (i = 0; i < len; i++) {
+		members = arguments[i];
+		if (i < len - 1) { // not the last argument?
+			mixIntoClass(this, members);
+		}
+	}
+
+	return extendClass(this, members || {}); // members will be undefined if no arguments
+};
+
+
+// Adds new member variables/methods to the class's prototype.
+// Can be called with another class, or a plain object hash containing new members.
+Class.mixin = function(members) {
+	mixIntoClass(this, members);
+};
+
+
+function extendClass(superClass, members) {
+	var subClass;
+
+	// ensure a constructor for the subclass, forwarding all arguments to the super-constructor if it doesn't exist
+	if (hasOwnProp(members, 'constructor')) {
+		subClass = members.constructor;
+	}
+	if (typeof subClass !== 'function') {
+		subClass = members.constructor = function() {
+			superClass.apply(this, arguments);
+		};
+	}
+
+	// build the base prototype for the subclass, which is an new object chained to the superclass's prototype
+	subClass.prototype = createObject(superClass.prototype);
+
+	// copy each member variable/method onto the the subclass's prototype
+	copyOwnProps(members, subClass.prototype);
+	copyNativeMethods(members, subClass.prototype); // hack for IE8
+
+	// copy over all class variables/methods to the subclass, such as `extend` and `mixin`
+	copyOwnProps(superClass, subClass);
+
+	return subClass;
+}
+
+
+function mixIntoClass(theClass, members) {
+	copyOwnProps(members.prototype || members, theClass.prototype); // TODO: copyNativeMethods?
+}
+;;
+
+var Emitter = FC.Emitter = Class.extend({
+
+	callbackHash: null,
+
+
+	on: function(name, callback) {
+		this.getCallbacks(name).add(callback);
+		return this; // for chaining
+	},
+
+
+	off: function(name, callback) {
+		this.getCallbacks(name).remove(callback);
+		return this; // for chaining
+	},
+
+
+	trigger: function(name) { // args...
+		var args = Array.prototype.slice.call(arguments, 1);
+
+		this.triggerWith(name, this, args);
+
+		return this; // for chaining
+	},
+
+
+	triggerWith: function(name, context, args) {
+		var callbacks = this.getCallbacks(name);
+
+		callbacks.fireWith(context, args);
+
+		return this; // for chaining
+	},
+
+
+	getCallbacks: function(name) {
+		var callbacks;
+
+		if (!this.callbackHash) {
+			this.callbackHash = {};
+		}
+
+		callbacks = this.callbackHash[name];
+		if (!callbacks) {
+			callbacks = this.callbackHash[name] = $.Callbacks();
+		}
+
+		return callbacks;
+	}
+
+});
+;;
+
+/* A rectangular panel that is absolutely positioned over other content
+------------------------------------------------------------------------------------------------------------------------
+Options:
+	- className (string)
+	- content (HTML string or jQuery element set)
+	- parentEl
+	- top
+	- left
+	- right (the x coord of where the right edge should be. not a "CSS" right)
+	- autoHide (boolean)
+	- show (callback)
+	- hide (callback)
+*/
+
+var Popover = Class.extend({
+
+	isHidden: true,
+	options: null,
+	el: null, // the container element for the popover. generated by this object
+	documentMousedownProxy: null, // document mousedown handler bound to `this`
+	margin: 10, // the space required between the popover and the edges of the scroll container
+
+
+	constructor: function(options) {
+		this.options = options || {};
+	},
+
+
+	// Shows the popover on the specified position. Renders it if not already
+	show: function() {
+		if (this.isHidden) {
+			if (!this.el) {
+				this.render();
+			}
+			this.el.show();
+			this.position();
+			this.isHidden = false;
+			this.trigger('show');
+		}
+	},
+
+
+	// Hides the popover, through CSS, but does not remove it from the DOM
+	hide: function() {
+		if (!this.isHidden) {
+			this.el.hide();
+			this.isHidden = true;
+			this.trigger('hide');
+		}
+	},
+
+
+	// Creates `this.el` and renders content inside of it
+	render: function() {
+		var _this = this;
+		var options = this.options;
+
+		this.el = $('<div class="fc-popover"/>')
+			.addClass(options.className || '')
+			.css({
+				// position initially to the top left to avoid creating scrollbars
+				top: 0,
+				left: 0
+			})
+			.append(options.content)
+			.appendTo(options.parentEl);
+
+		// when a click happens on anything inside with a 'fc-close' className, hide the popover
+		this.el.on('click', '.fc-close', function() {
+			_this.hide();
+		});
+
+		if (options.autoHide) {
+			$(document).on('mousedown', this.documentMousedownProxy = proxy(this, 'documentMousedown'));
+		}
+	},
+
+
+	// Triggered when the user clicks *anywhere* in the document, for the autoHide feature
+	documentMousedown: function(ev) {
+		// only hide the popover if the click happened outside the popover
+		if (this.el && !$(ev.target).closest(this.el).length) {
+			this.hide();
+		}
+	},
+
+
+	// Hides and unregisters any handlers
+	removeElement: function() {
+		this.hide();
+
+		if (this.el) {
+			this.el.remove();
+			this.el = null;
+		}
+
+		$(document).off('mousedown', this.documentMousedownProxy);
+	},
+
+
+	// Positions the popover optimally, using the top/left/right options
+	position: function() {
+		var options = this.options;
+		var origin = this.el.offsetParent().offset();
+		var width = this.el.outerWidth();
+		var height = this.el.outerHeight();
+		var windowEl = $(window);
+		var viewportEl = getScrollParent(this.el);
+		var viewportTop;
+		var viewportLeft;
+		var viewportOffset;
+		var top; // the "position" (not "offset") values for the popover
+		var left; //
+
+		// compute top and left
+		top = options.top || 0;
+		if (options.left !== undefined) {
+			left = options.left;
+		}
+		else if (options.right !== undefined) {
+			left = options.right - width; // derive the left value from the right value
+		}
+		else {
+			left = 0;
+		}
+
+		if (viewportEl.is(window) || viewportEl.is(document)) { // normalize getScrollParent's result
+			viewportEl = windowEl;
+			viewportTop = 0; // the window is always at the top left
+			viewportLeft = 0; // (and .offset() won't work if called here)
+		}
+		else {
+			viewportOffset = viewportEl.offset();
+			viewportTop = viewportOffset.top;
+			viewportLeft = viewportOffset.left;
+		}
+
+		// if the window is scrolled, it causes the visible area to be further down
+		viewportTop += windowEl.scrollTop();
+		viewportLeft += windowEl.scrollLeft();
+
+		// constrain to the view port. if constrained by two edges, give precedence to top/left
+		if (options.viewportConstrain !== false) {
+			top = Math.min(top, viewportTop + viewportEl.outerHeight() - height - this.margin);
+			top = Math.max(top, viewportTop + this.margin);
+			left = Math.min(left, viewportLeft + viewportEl.outerWidth() - width - this.margin);
+			left = Math.max(left, viewportLeft + this.margin);
+		}
+
+		this.el.css({
+			top: top - origin.top,
+			left: left - origin.left
+		});
+	},
+
+
+	// Triggers a callback. Calls a function in the option hash of the same name.
+	// Arguments beyond the first `name` are forwarded on.
+	// TODO: better code reuse for this. Repeat code
+	trigger: function(name) {
+		if (this.options[name]) {
+			this.options[name].apply(this, Array.prototype.slice.call(arguments, 1));
+		}
+	}
+
+});
+
+;;
+
 /*
- * Use fullcalendar.css for basic styling.
- * For event drag & drop, requires jQuery UI draggable.
- * For event resizing, requires jQuery UI resizable.
- */
- 
-(function($, undefined) {
+A cache for the left/right/top/bottom/width/height values for one or more elements.
+Works with both offset (from topleft document) and position (from offsetParent).
+
+options:
+- els
+- isHorizontal
+- isVertical
+*/
+var CoordCache = FC.CoordCache = Class.extend({
+
+	els: null, // jQuery set (assumed to be siblings)
+	origin: null, // {left,top} position of offsetParent of els
+	boundingRect: null, // constrain cordinates to this rectangle. {left,right,top,bottom} or null
+	isHorizontal: false, // whether to query for left/right/width
+	isVertical: false, // whether to query for top/bottom/height
+
+	// arrays of coordinates (offsets from topleft of document)
+	lefts: null,
+	rights: null,
+	tops: null,
+	bottoms: null,
+
+
+	constructor: function(options) {
+		this.els = $(options.els);
+		this.isHorizontal = options.isHorizontal;
+		this.isVertical = options.isVertical;
+	},
+
+
+	// Queries the els for coordinates and stores them.
+	// Call this method before using and of the get* methods below.
+	build: function() {
+		this.origin = this.els.eq(0).offsetParent().offset();
+		this.boundingRect = this.queryBoundingRect();
+
+		if (this.isHorizontal) {
+			this.buildElHorizontals();
+		}
+		if (this.isVertical) {
+			this.buildElVerticals();
+		}
+	},
+
+
+	// Destroys all internal data about coordinates, freeing memory
+	clear: function() {
+		this.origin = null;
+		this.boundingRect = null;
+		this.lefts = null;
+		this.rights = null;
+		this.tops = null;
+		this.bottoms = null;
+	},
+
+
+	// Compute and return what the elements' bounding rectangle is, from the user's perspective.
+	// Right now, only returns a rectangle if constrained by an overflow:scroll element.
+	queryBoundingRect: function() {
+		var scrollParentEl = getScrollParent(this.els.eq(0));
+
+		if (!scrollParentEl.is(document)) {
+			return getClientRect(scrollParentEl);
+		}
+	},
+
+
+	// Populates the left/right internal coordinate arrays
+	buildElHorizontals: function() {
+		var lefts = [];
+		var rights = [];
+
+		this.els.each(function(i, node) {
+			var el = $(node);
+			var left = el.offset().left;
+			var width = el.outerWidth();
+
+			lefts.push(left);
+			rights.push(left + width);
+		});
+
+		this.lefts = lefts;
+		this.rights = rights;
+	},
+
+
+	// Populates the top/bottom internal coordinate arrays
+	buildElVerticals: function() {
+		var tops = [];
+		var bottoms = [];
+
+		this.els.each(function(i, node) {
+			var el = $(node);
+			var top = el.offset().top;
+			var height = el.outerHeight();
+
+			tops.push(top);
+			bottoms.push(top + height);
+		});
+
+		this.tops = tops;
+		this.bottoms = bottoms;
+	},
+
+
+	// Given a left offset (from document left), returns the index of the el that it horizontally intersects.
+	// If no intersection is made, or outside of the boundingRect, returns undefined.
+	getHorizontalIndex: function(leftOffset) {
+		var boundingRect = this.boundingRect;
+		var lefts = this.lefts;
+		var rights = this.rights;
+		var len = lefts.length;
+		var i;
+
+		if (!boundingRect || (leftOffset >= boundingRect.left && leftOffset < boundingRect.right)) {
+			for (i = 0; i < len; i++) {
+				if (leftOffset >= lefts[i] && leftOffset < rights[i]) {
+					return i;
+				}
+			}
+		}
+	},
+
+
+	// Given a top offset (from document top), returns the index of the el that it vertically intersects.
+	// If no intersection is made, or outside of the boundingRect, returns undefined.
+	getVerticalIndex: function(topOffset) {
+		var boundingRect = this.boundingRect;
+		var tops = this.tops;
+		var bottoms = this.bottoms;
+		var len = tops.length;
+		var i;
+
+		if (!boundingRect || (topOffset >= boundingRect.top && topOffset < boundingRect.bottom)) {
+			for (i = 0; i < len; i++) {
+				if (topOffset >= tops[i] && topOffset < bottoms[i]) {
+					return i;
+				}
+			}
+		}
+	},
+
+
+	// Gets the left offset (from document left) of the element at the given index
+	getLeftOffset: function(leftIndex) {
+		return this.lefts[leftIndex];
+	},
 
 
+	// Gets the left position (from offsetParent left) of the element at the given index
+	getLeftPosition: function(leftIndex) {
+		return this.lefts[leftIndex] - this.origin.left;
+	},
+
+
+	// Gets the right offset (from document left) of the element at the given index.
+	// This value is NOT relative to the document's right edge, like the CSS concept of "right" would be.
+	getRightOffset: function(leftIndex) {
+		return this.rights[leftIndex];
+	},
+
+
+	// Gets the right position (from offsetParent left) of the element at the given index.
+	// This value is NOT relative to the offsetParent's right edge, like the CSS concept of "right" would be.
+	getRightPosition: function(leftIndex) {
+		return this.rights[leftIndex] - this.origin.left;
+	},
+
+
+	// Gets the width of the element at the given index
+	getWidth: function(leftIndex) {
+		return this.rights[leftIndex] - this.lefts[leftIndex];
+	},
+
+
+	// Gets the top offset (from document top) of the element at the given index
+	getTopOffset: function(topIndex) {
+		return this.tops[topIndex];
+	},
+
+
+	// Gets the top position (from offsetParent top) of the element at the given position
+	getTopPosition: function(topIndex) {
+		return this.tops[topIndex] - this.origin.top;
+	},
+
+	// Gets the bottom offset (from the document top) of the element at the given index.
+	// This value is NOT relative to the offsetParent's bottom edge, like the CSS concept of "bottom" would be.
+	getBottomOffset: function(topIndex) {
+		return this.bottoms[topIndex];
+	},
+
+
+	// Gets the bottom position (from the offsetParent top) of the element at the given index.
+	// This value is NOT relative to the offsetParent's bottom edge, like the CSS concept of "bottom" would be.
+	getBottomPosition: function(topIndex) {
+		return this.bottoms[topIndex] - this.origin.top;
+	},
+
+
+	// Gets the height of the element at the given index
+	getHeight: function(topIndex) {
+		return this.bottoms[topIndex] - this.tops[topIndex];
+	}
+
+});
+
 ;;
 
-var defaults = {
+/* Tracks a drag's mouse movement, firing various handlers
+----------------------------------------------------------------------------------------------------------------------*/
+// TODO: use Emitter
 
-	// display
-	defaultView: 'month',
-	aspectRatio: 1.35,
-	header: {
-		left: 'title',
-		center: '',
-		right: 'today prev,next'
+var DragListener = FC.DragListener = Class.extend({
+
+	options: null,
+
+	isListening: false,
+	isDragging: false,
+
+	// coordinates of the initial mousedown
+	originX: null,
+	originY: null,
+
+	// handler attached to the document, bound to the DragListener's `this`
+	mousemoveProxy: null,
+	mouseupProxy: null,
+
+	// for IE8 bug-fighting behavior, for now
+	subjectEl: null, // the element being draged. optional
+	subjectHref: null,
+
+	scrollEl: null,
+	scrollBounds: null, // { top, bottom, left, right }
+	scrollTopVel: null, // pixels per second
+	scrollLeftVel: null, // pixels per second
+	scrollIntervalId: null, // ID of setTimeout for scrolling animation loop
+	scrollHandlerProxy: null, // this-scoped function for handling when scrollEl is scrolled
+
+	scrollSensitivity: 30, // pixels from edge for scrolling to start
+	scrollSpeed: 200, // pixels per second, at maximum speed
+	scrollIntervalMs: 50, // millisecond wait between scroll increment
+
+
+	constructor: function(options) {
+		options = options || {};
+		this.options = options;
+		this.subjectEl = options.subjectEl;
 	},
-	weekends: true,
-	weekNumbers: false,
-	weekNumberCalculation: 'iso',
-	weekNumberTitle: 'W',
-	
-	// editing
-	//editable: false,
-	//disableDragging: false,
-	//disableResizing: false,
-	
-	allDayDefault: true,
-	ignoreTimezone: true,
-	
-	// event ajax
-	lazyFetching: true,
-	startParam: 'start',
-	endParam: 'end',
-	
-	// time formats
-	titleFormat: {
-		month: 'MMMM yyyy',
-		week: "MMM d[ yyyy]{ '&#8212;'[ MMM] d yyyy}",
-		day: 'dddd, MMM d, yyyy'
+
+
+	// Call this when the user does a mousedown. Will probably lead to startListening
+	mousedown: function(ev) {
+		if (isPrimaryMouseButton(ev)) {
+
+			ev.preventDefault(); // prevents native selection in most browsers
+
+			this.startListening(ev);
+
+			// start the drag immediately if there is no minimum distance for a drag start
+			if (!this.options.distance) {
+				this.startDrag(ev);
+			}
+		}
 	},
-	columnFormat: {
-		month: 'ddd',
-		week: 'ddd M/d',
-		day: 'dddd M/d'
+
+
+	// Call this to start tracking mouse movements
+	startListening: function(ev) {
+		var scrollParent;
+
+		if (!this.isListening) {
+
+			// grab scroll container and attach handler
+			if (ev && this.options.scroll) {
+				scrollParent = getScrollParent($(ev.target));
+				if (!scrollParent.is(window) && !scrollParent.is(document)) {
+					this.scrollEl = scrollParent;
+
+					// scope to `this`, and use `debounce` to make sure rapid calls don't happen
+					this.scrollHandlerProxy = debounce(proxy(this, 'scrollHandler'), 100);
+					this.scrollEl.on('scroll', this.scrollHandlerProxy);
+				}
+			}
+
+			$(document)
+				.on('mousemove', this.mousemoveProxy = proxy(this, 'mousemove'))
+				.on('mouseup', this.mouseupProxy = proxy(this, 'mouseup'))
+				.on('selectstart', this.preventDefault); // prevents native selection in IE<=8
+
+			if (ev) {
+				this.originX = ev.pageX;
+				this.originY = ev.pageY;
+			}
+			else {
+				// if no starting information was given, origin will be the topleft corner of the screen.
+				// if so, dx/dy in the future will be the absolute coordinates.
+				this.originX = 0;
+				this.originY = 0;
+			}
+
+			this.isListening = true;
+			this.listenStart(ev);
+		}
 	},
-	timeFormat: { // for event elements
-		'': 'h(:mm)t' // default
+
+
+	// Called when drag listening has started (but a real drag has not necessarily began)
+	listenStart: function(ev) {
+		this.trigger('listenStart', ev);
 	},
-	
-	// locale
-	isRTL: false,
-	firstDay: 0,
-	monthNames: ['January','February','March','April','May','June','July','August','September','October','November','December'],
-	monthNamesShort: ['Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec'],
-	dayNames: ['Sunday','Monday','Tuesday','Wednesday','Thursday','Friday','Saturday'],
-	dayNamesShort: ['Sun','Mon','Tue','Wed','Thu','Fri','Sat'],
-	buttonText: {
-		prev: "<span class='fc-text-arrow'>&lsaquo;</span>",
-		next: "<span class='fc-text-arrow'>&rsaquo;</span>",
-		prevYear: "<span class='fc-text-arrow'>&laquo;</span>",
-		nextYear: "<span class='fc-text-arrow'>&raquo;</span>",
-		today: 'today',
-		month: 'month',
-		week: 'week',
-		day: 'day'
+
+
+	// Called when the user moves the mouse
+	mousemove: function(ev) {
+		var dx = ev.pageX - this.originX;
+		var dy = ev.pageY - this.originY;
+		var minDistance;
+		var distanceSq; // current distance from the origin, squared
+
+		if (!this.isDragging) { // if not already dragging...
+			// then start the drag if the minimum distance criteria is met
+			minDistance = this.options.distance || 1;
+			distanceSq = dx * dx + dy * dy;
+			if (distanceSq >= minDistance * minDistance) { // use pythagorean theorem
+				this.startDrag(ev);
+			}
+		}
+
+		if (this.isDragging) {
+			this.drag(dx, dy, ev); // report a drag, even if this mousemove initiated the drag
+		}
 	},
-	
-	// jquery-ui theming
-	theme: false,
-	buttonIcons: {
-		prev: 'circle-triangle-w',
-		next: 'circle-triangle-e'
+
+
+	// Call this to initiate a legitimate drag.
+	// This function is called internally from this class, but can also be called explicitly from outside
+	startDrag: function(ev) {
+
+		if (!this.isListening) { // startDrag must have manually initiated
+			this.startListening();
+		}
+
+		if (!this.isDragging) {
+			this.isDragging = true;
+			this.dragStart(ev);
+		}
 	},
-	
-	//selectable: false,
-	unselectAuto: true,
-	
-	dropAccept: '*'
-	
-};
 
-// right-to-left defaults
-var rtlDefaults = {
-	header: {
-		left: 'next,prev today',
-		center: '',
-		right: 'title'
+
+	// Called when the actual drag has started (went beyond minDistance)
+	dragStart: function(ev) {
+		var subjectEl = this.subjectEl;
+
+		this.trigger('dragStart', ev);
+
+		// remove a mousedown'd <a>'s href so it is not visited (IE8 bug)
+		if ((this.subjectHref = subjectEl ? subjectEl.attr('href') : null)) {
+			subjectEl.removeAttr('href');
+		}
 	},
-	buttonText: {
-		prev: "<span class='fc-text-arrow'>&rsaquo;</span>",
-		next: "<span class='fc-text-arrow'>&lsaquo;</span>",
-		prevYear: "<span class='fc-text-arrow'>&raquo;</span>",
-		nextYear: "<span class='fc-text-arrow'>&laquo;</span>"
+
+
+	// Called while the mouse is being moved and when we know a legitimate drag is taking place
+	drag: function(dx, dy, ev) {
+		this.trigger('drag', dx, dy, ev);
+		this.updateScroll(ev); // will possibly cause scrolling
 	},
-	buttonIcons: {
-		prev: 'circle-triangle-e',
-		next: 'circle-triangle-w'
+
+
+	// Called when the user does a mouseup
+	mouseup: function(ev) {
+		this.stopListening(ev);
+	},
+
+
+	// Called when the drag is over. Will not cause listening to stop however.
+	// A concluding 'cellOut' event will NOT be triggered.
+	stopDrag: function(ev) {
+		if (this.isDragging) {
+			this.stopScrolling();
+			this.dragStop(ev);
+			this.isDragging = false;
+		}
+	},
+
+
+	// Called when dragging has been stopped
+	dragStop: function(ev) {
+		var _this = this;
+
+		this.trigger('dragStop', ev);
+
+		// restore a mousedown'd <a>'s href (for IE8 bug)
+		setTimeout(function() { // must be outside of the click's execution
+			if (_this.subjectHref) {
+				_this.subjectEl.attr('href', _this.subjectHref);
+			}
+		}, 0);
+	},
+
+
+	// Call this to stop listening to the user's mouse events
+	stopListening: function(ev) {
+		this.stopDrag(ev); // if there's a current drag, kill it
+
+		if (this.isListening) {
+
+			// remove the scroll handler if there is a scrollEl
+			if (this.scrollEl) {
+				this.scrollEl.off('scroll', this.scrollHandlerProxy);
+				this.scrollHandlerProxy = null;
+			}
+
+			$(document)
+				.off('mousemove', this.mousemoveProxy)
+				.off('mouseup', this.mouseupProxy)
+				.off('selectstart', this.preventDefault);
+
+			this.mousemoveProxy = null;
+			this.mouseupProxy = null;
+
+			this.isListening = false;
+			this.listenStop(ev);
+		}
+	},
+
+
+	// Called when drag listening has stopped
+	listenStop: function(ev) {
+		this.trigger('listenStop', ev);
+	},
+
+
+	// Triggers a callback. Calls a function in the option hash of the same name.
+	// Arguments beyond the first `name` are forwarded on.
+	trigger: function(name) {
+		if (this.options[name]) {
+			this.options[name].apply(this, Array.prototype.slice.call(arguments, 1));
+		}
+	},
+
+
+	// Stops a given mouse event from doing it's native browser action. In our case, text selection.
+	preventDefault: function(ev) {
+		ev.preventDefault();
+	},
+
+
+	/* Scrolling
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Computes and stores the bounding rectangle of scrollEl
+	computeScrollBounds: function() {
+		var el = this.scrollEl;
+
+		this.scrollBounds = el ? getOuterRect(el) : null;
+			// TODO: use getClientRect in future. but prevents auto scrolling when on top of scrollbars
+	},
+
+
+	// Called when the dragging is in progress and scrolling should be updated
+	updateScroll: function(ev) {
+		var sensitivity = this.scrollSensitivity;
+		var bounds = this.scrollBounds;
+		var topCloseness, bottomCloseness;
+		var leftCloseness, rightCloseness;
+		var topVel = 0;
+		var leftVel = 0;
+
+		if (bounds) { // only scroll if scrollEl exists
+
+			// compute closeness to edges. valid range is from 0.0 - 1.0
+			topCloseness = (sensitivity - (ev.pageY - bounds.top)) / sensitivity;
+			bottomCloseness = (sensitivity - (bounds.bottom - ev.pageY)) / sensitivity;
+			leftCloseness = (sensitivity - (ev.pageX - bounds.left)) / sensitivity;
+			rightCloseness = (sensitivity - (bounds.right - ev.pageX)) / sensitivity;
+
+			// translate vertical closeness into velocity.
+			// mouse must be completely in bounds for velocity to happen.
+			if (topCloseness >= 0 && topCloseness <= 1) {
+				topVel = topCloseness * this.scrollSpeed * -1; // negative. for scrolling up
+			}
+			else if (bottomCloseness >= 0 && bottomCloseness <= 1) {
+				topVel = bottomCloseness * this.scrollSpeed;
+			}
+
+			// translate horizontal closeness into velocity
+			if (leftCloseness >= 0 && leftCloseness <= 1) {
+				leftVel = leftCloseness * this.scrollSpeed * -1; // negative. for scrolling left
+			}
+			else if (rightCloseness >= 0 && rightCloseness <= 1) {
+				leftVel = rightCloseness * this.scrollSpeed;
+			}
+		}
+
+		this.setScrollVel(topVel, leftVel);
+	},
+
+
+	// Sets the speed-of-scrolling for the scrollEl
+	setScrollVel: function(topVel, leftVel) {
+
+		this.scrollTopVel = topVel;
+		this.scrollLeftVel = leftVel;
+
+		this.constrainScrollVel(); // massages into realistic values
+
+		// if there is non-zero velocity, and an animation loop hasn't already started, then START
+		if ((this.scrollTopVel || this.scrollLeftVel) && !this.scrollIntervalId) {
+			this.scrollIntervalId = setInterval(
+				proxy(this, 'scrollIntervalFunc'), // scope to `this`
+				this.scrollIntervalMs
+			);
+		}
+	},
+
+
+	// Forces scrollTopVel and scrollLeftVel to be zero if scrolling has already gone all the way
+	constrainScrollVel: function() {
+		var el = this.scrollEl;
+
+		if (this.scrollTopVel < 0) { // scrolling up?
+			if (el.scrollTop() <= 0) { // already scrolled all the way up?
+				this.scrollTopVel = 0;
+			}
+		}
+		else if (this.scrollTopVel > 0) { // scrolling down?
+			if (el.scrollTop() + el[0].clientHeight >= el[0].scrollHeight) { // already scrolled all the way down?
+				this.scrollTopVel = 0;
+			}
+		}
+
+		if (this.scrollLeftVel < 0) { // scrolling left?
+			if (el.scrollLeft() <= 0) { // already scrolled all the left?
+				this.scrollLeftVel = 0;
+			}
+		}
+		else if (this.scrollLeftVel > 0) { // scrolling right?
+			if (el.scrollLeft() + el[0].clientWidth >= el[0].scrollWidth) { // already scrolled all the way right?
+				this.scrollLeftVel = 0;
+			}
+		}
+	},
+
+
+	// This function gets called during every iteration of the scrolling animation loop
+	scrollIntervalFunc: function() {
+		var el = this.scrollEl;
+		var frac = this.scrollIntervalMs / 1000; // considering animation frequency, what the vel should be mult'd by
+
+		// change the value of scrollEl's scroll
+		if (this.scrollTopVel) {
+			el.scrollTop(el.scrollTop() + this.scrollTopVel * frac);
+		}
+		if (this.scrollLeftVel) {
+			el.scrollLeft(el.scrollLeft() + this.scrollLeftVel * frac);
+		}
+
+		this.constrainScrollVel(); // since the scroll values changed, recompute the velocities
+
+		// if scrolled all the way, which causes the vels to be zero, stop the animation loop
+		if (!this.scrollTopVel && !this.scrollLeftVel) {
+			this.stopScrolling();
+		}
+	},
+
+
+	// Kills any existing scrolling animation loop
+	stopScrolling: function() {
+		if (this.scrollIntervalId) {
+			clearInterval(this.scrollIntervalId);
+			this.scrollIntervalId = null;
+
+			// when all done with scrolling, recompute positions since they probably changed
+			this.scrollStop();
+		}
+	},
+
+
+	// Get called when the scrollEl is scrolled (NOTE: this is delayed via debounce)
+	scrollHandler: function() {
+		// recompute all coordinates, but *only* if this is *not* part of our scrolling animation
+		if (!this.scrollIntervalId) {
+			this.scrollStop();
+		}
+	},
+
+
+	// Called when scrolling has stopped, whether through auto scroll, or the user scrolling
+	scrollStop: function() {
 	}
-};
 
+});
+
+;;
+
+/* Tracks mouse movements over a component and raises events about which hit the mouse is over.
+------------------------------------------------------------------------------------------------------------------------
+options:
+- subjectEl
+- subjectCenter
+*/
+
+var HitDragListener = DragListener.extend({
+
+	component: null, // converts coordinates to hits
+		// methods: prepareHits, releaseHits, queryHit
+
+	origHit: null, // the hit the mouse was over when listening started
+	hit: null, // the hit the mouse is over
+	coordAdjust: null, // delta that will be added to the mouse coordinates when computing collisions
+
+
+	constructor: function(component, options) {
+		DragListener.call(this, options); // call the super-constructor
+
+		this.component = component;
+	},
+
+
+	// Called when drag listening starts (but a real drag has not necessarily began).
+	// ev might be undefined if dragging was started manually.
+	listenStart: function(ev) {
+		var subjectEl = this.subjectEl;
+		var subjectRect;
+		var origPoint;
+		var point;
+
+		DragListener.prototype.listenStart.apply(this, arguments); // call the super-method
+
+		this.computeCoords();
+
+		if (ev) {
+			origPoint = { left: ev.pageX, top: ev.pageY };
+			point = origPoint;
+
+			// constrain the point to bounds of the element being dragged
+			if (subjectEl) {
+				subjectRect = getOuterRect(subjectEl); // used for centering as well
+				point = constrainPoint(point, subjectRect);
+			}
+
+			this.origHit = this.queryHit(point.left, point.top);
+
+			// treat the center of the subject as the collision point?
+			if (subjectEl && this.options.subjectCenter) {
+
+				// only consider the area the subject overlaps the hit. best for large subjects.
+				// TODO: skip this if hit didn't supply left/right/top/bottom
+				if (this.origHit) {
+					subjectRect = intersectRects(this.origHit, subjectRect) ||
+						subjectRect; // in case there is no intersection
+				}
+
+				point = getRectCenter(subjectRect);
+			}
+
+			this.coordAdjust = diffPoints(point, origPoint); // point - origPoint
+		}
+		else {
+			this.origHit = null;
+			this.coordAdjust = null;
+		}
+	},
+
+
+	// Recomputes the drag-critical positions of elements
+	computeCoords: function() {
+		this.component.prepareHits();
+		this.computeScrollBounds(); // why is this here???
+	},
+
+
+	// Called when the actual drag has started
+	dragStart: function(ev) {
+		var hit;
+
+		DragListener.prototype.dragStart.apply(this, arguments); // call the super-method
+
+		// might be different from this.origHit if the min-distance is large
+		hit = this.queryHit(ev.pageX, ev.pageY);
+
+		// report the initial hit the mouse is over
+		// especially important if no min-distance and drag starts immediately
+		if (hit) {
+			this.hitOver(hit);
+		}
+	},
+
+
+	// Called when the drag moves
+	drag: function(dx, dy, ev) {
+		var hit;
+
+		DragListener.prototype.drag.apply(this, arguments); // call the super-method
+
+		hit = this.queryHit(ev.pageX, ev.pageY);
+
+		if (!isHitsEqual(hit, this.hit)) { // a different hit than before?
+			if (this.hit) {
+				this.hitOut();
+			}
+			if (hit) {
+				this.hitOver(hit);
+			}
+		}
+	},
+
+
+	// Called when dragging has been stopped
+	dragStop: function() {
+		this.hitDone();
+		DragListener.prototype.dragStop.apply(this, arguments); // call the super-method
+	},
+
+
+	// Called when a the mouse has just moved over a new hit
+	hitOver: function(hit) {
+		var isOrig = isHitsEqual(hit, this.origHit);
+
+		this.hit = hit;
+
+		this.trigger('hitOver', this.hit, isOrig, this.origHit);
+	},
+
+
+	// Called when the mouse has just moved out of a hit
+	hitOut: function() {
+		if (this.hit) {
+			this.trigger('hitOut', this.hit);
+			this.hitDone();
+			this.hit = null;
+		}
+	},
+
+
+	// Called after a hitOut. Also called before a dragStop
+	hitDone: function() {
+		if (this.hit) {
+			this.trigger('hitDone', this.hit);
+		}
+	},
+
+
+	// Called when drag listening has stopped
+	listenStop: function() {
+		DragListener.prototype.listenStop.apply(this, arguments); // call the super-method
+
+		this.origHit = null;
+		this.hit = null;
+
+		this.component.releaseHits();
+	},
+
+
+	// Called when scrolling has stopped, whether through auto scroll, or the user scrolling
+	scrollStop: function() {
+		DragListener.prototype.scrollStop.apply(this, arguments); // call the super-method
+
+		this.computeCoords(); // hits' absolute positions will be in new places. recompute
+	},
 
 
+	// Gets the hit underneath the coordinates for the given mouse event
+	queryHit: function(left, top) {
+
+		if (this.coordAdjust) {
+			left += this.coordAdjust.left;
+			top += this.coordAdjust.top;
+		}
+
+		return this.component.queryHit(left, top);
+	}
+
+});
+
+
+// Returns `true` if the hits are identically equal. `false` otherwise. Must be from the same component.
+// Two null values will be considered equal, as two "out of the component" states are the same.
+function isHitsEqual(hit0, hit1) {
+
+	if (!hit0 && !hit1) {
+		return true;
+	}
+
+	if (hit0 && hit1) {
+		return hit0.component === hit1.component &&
+			isHitPropsWithin(hit0, hit1) &&
+			isHitPropsWithin(hit1, hit0); // ensures all props are identical
+	}
+
+	return false;
+}
+
+
+// Returns true if all of subHit's non-standard properties are within superHit
+function isHitPropsWithin(subHit, superHit) {
+	for (var propName in subHit) {
+		if (!/^(component|left|right|top|bottom)$/.test(propName)) {
+			if (subHit[propName] !== superHit[propName]) {
+				return false;
+			}
+		}
+	}
+	return true;
+}
+
 ;;
 
-var fc = $.fullCalendar = { version: "1.6.0" };
-var fcViews = fc.views = {};
+/* Creates a clone of an element and lets it track the mouse as it moves
+----------------------------------------------------------------------------------------------------------------------*/
 
+var MouseFollower = Class.extend({
 
-$.fn.fullCalendar = function(options) {
+	options: null,
 
+	sourceEl: null, // the element that will be cloned and made to look like it is dragging
+	el: null, // the clone of `sourceEl` that will track the mouse
+	parentEl: null, // the element that `el` (the clone) will be attached to
 
-	// method calling
-	if (typeof options == 'string') {
-		var args = Array.prototype.slice.call(arguments, 1);
-		var res;
-		this.each(function() {
-			var calendar = $.data(this, 'fullCalendar');
-			if (calendar && $.isFunction(calendar[options])) {
-				var r = calendar[options].apply(calendar, args);
-				if (res === undefined) {
-					res = r;
+	// the initial position of el, relative to the offset parent. made to match the initial offset of sourceEl
+	top0: null,
+	left0: null,
+
+	// the initial position of the mouse
+	mouseY0: null,
+	mouseX0: null,
+
+	// the number of pixels the mouse has moved from its initial position
+	topDelta: null,
+	leftDelta: null,
+
+	mousemoveProxy: null, // document mousemove handler, bound to the MouseFollower's `this`
+
+	isFollowing: false,
+	isHidden: false,
+	isAnimating: false, // doing the revert animation?
+
+	constructor: function(sourceEl, options) {
+		this.options = options = options || {};
+		this.sourceEl = sourceEl;
+		this.parentEl = options.parentEl ? $(options.parentEl) : sourceEl.parent(); // default to sourceEl's parent
+	},
+
+
+	// Causes the element to start following the mouse
+	start: function(ev) {
+		if (!this.isFollowing) {
+			this.isFollowing = true;
+
+			this.mouseY0 = ev.pageY;
+			this.mouseX0 = ev.pageX;
+			this.topDelta = 0;
+			this.leftDelta = 0;
+
+			if (!this.isHidden) {
+				this.updatePosition();
+			}
+
+			$(document).on('mousemove', this.mousemoveProxy = proxy(this, 'mousemove'));
+		}
+	},
+
+
+	// Causes the element to stop following the mouse. If shouldRevert is true, will animate back to original position.
+	// `callback` gets invoked when the animation is complete. If no animation, it is invoked immediately.
+	stop: function(shouldRevert, callback) {
+		var _this = this;
+		var revertDuration = this.options.revertDuration;
+
+		function complete() {
+			this.isAnimating = false;
+			_this.removeElement();
+
+			this.top0 = this.left0 = null; // reset state for future updatePosition calls
+
+			if (callback) {
+				callback();
+			}
+		}
+
+		if (this.isFollowing && !this.isAnimating) { // disallow more than one stop animation at a time
+			this.isFollowing = false;
+
+			$(document).off('mousemove', this.mousemoveProxy);
+
+			if (shouldRevert && revertDuration && !this.isHidden) { // do a revert animation?
+				this.isAnimating = true;
+				this.el.animate({
+					top: this.top0,
+					left: this.left0
+				}, {
+					duration: revertDuration,
+					complete: complete
+				});
+			}
+			else {
+				complete();
+			}
+		}
+	},
+
+
+	// Gets the tracking element. Create it if necessary
+	getEl: function() {
+		var el = this.el;
+
+		if (!el) {
+			this.sourceEl.width(); // hack to force IE8 to compute correct bounding box
+			el = this.el = this.sourceEl.clone()
+				.css({
+					position: 'absolute',
+					visibility: '', // in case original element was hidden (commonly through hideEvents())
+					display: this.isHidden ? 'none' : '', // for when initially hidden
+					margin: 0,
+					right: 'auto', // erase and set width instead
+					bottom: 'auto', // erase and set height instead
+					width: this.sourceEl.width(), // explicit height in case there was a 'right' value
+					height: this.sourceEl.height(), // explicit width in case there was a 'bottom' value
+					opacity: this.options.opacity || '',
+					zIndex: this.options.zIndex
+				})
+				.appendTo(this.parentEl);
+		}
+
+		return el;
+	},
+
+
+	// Removes the tracking element if it has already been created
+	removeElement: function() {
+		if (this.el) {
+			this.el.remove();
+			this.el = null;
+		}
+	},
+
+
+	// Update the CSS position of the tracking element
+	updatePosition: function() {
+		var sourceOffset;
+		var origin;
+
+		this.getEl(); // ensure this.el
+
+		// make sure origin info was computed
+		if (this.top0 === null) {
+			this.sourceEl.width(); // hack to force IE8 to compute correct bounding box
+			sourceOffset = this.sourceEl.offset();
+			origin = this.el.offsetParent().offset();
+			this.top0 = sourceOffset.top - origin.top;
+			this.left0 = sourceOffset.left - origin.left;
+		}
+
+		this.el.css({
+			top: this.top0 + this.topDelta,
+			left: this.left0 + this.leftDelta
+		});
+	},
+
+
+	// Gets called when the user moves the mouse
+	mousemove: function(ev) {
+		this.topDelta = ev.pageY - this.mouseY0;
+		this.leftDelta = ev.pageX - this.mouseX0;
+
+		if (!this.isHidden) {
+			this.updatePosition();
+		}
+	},
+
+
+	// Temporarily makes the tracking element invisible. Can be called before following starts
+	hide: function() {
+		if (!this.isHidden) {
+			this.isHidden = true;
+			if (this.el) {
+				this.el.hide();
+			}
+		}
+	},
+
+
+	// Show the tracking element after it has been temporarily hidden
+	show: function() {
+		if (this.isHidden) {
+			this.isHidden = false;
+			this.updatePosition();
+			this.getEl().show();
+		}
+	}
+
+});
+
+;;
+
+/* An abstract class comprised of a "grid" of areas that each represent a specific datetime
+----------------------------------------------------------------------------------------------------------------------*/
+
+var Grid = FC.Grid = Class.extend({
+
+	view: null, // a View object
+	isRTL: null, // shortcut to the view's isRTL option
+
+	start: null,
+	end: null,
+
+	el: null, // the containing element
+	elsByFill: null, // a hash of jQuery element sets used for rendering each fill. Keyed by fill name.
+
+	externalDragStartProxy: null, // binds the Grid's scope to externalDragStart (in DayGrid.events)
+
+	// derived from options
+	eventTimeFormat: null,
+	displayEventTime: null,
+	displayEventEnd: null,
+
+	minResizeDuration: null, // TODO: hack. set by subclasses. minumum event resize duration
+
+	// if defined, holds the unit identified (ex: "year" or "month") that determines the level of granularity
+	// of the date areas. if not defined, assumes to be day and time granularity.
+	// TODO: port isTimeScale into same system?
+	largeUnit: null,
+
+
+	constructor: function(view) {
+		this.view = view;
+		this.isRTL = view.opt('isRTL');
+
+		this.elsByFill = {};
+		this.externalDragStartProxy = proxy(this, 'externalDragStart');
+	},
+
+
+	/* Options
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Generates the format string used for event time text, if not explicitly defined by 'timeFormat'
+	computeEventTimeFormat: function() {
+		return this.view.opt('smallTimeFormat');
+	},
+
+
+	// Determines whether events should have their end times displayed, if not explicitly defined by 'displayEventTime'.
+	// Only applies to non-all-day events.
+	computeDisplayEventTime: function() {
+		return true;
+	},
+
+
+	// Determines whether events should have their end times displayed, if not explicitly defined by 'displayEventEnd'
+	computeDisplayEventEnd: function() {
+		return true;
+	},
+
+
+	/* Dates
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Tells the grid about what period of time to display.
+	// Any date-related internal data should be generated.
+	setRange: function(range) {
+		this.start = range.start.clone();
+		this.end = range.end.clone();
+
+		this.rangeUpdated();
+		this.processRangeOptions();
+	},
+
+
+	// Called when internal variables that rely on the range should be updated
+	rangeUpdated: function() {
+	},
+
+
+	// Updates values that rely on options and also relate to range
+	processRangeOptions: function() {
+		var view = this.view;
+		var displayEventTime;
+		var displayEventEnd;
+
+		this.eventTimeFormat =
+			view.opt('eventTimeFormat') ||
+			view.opt('timeFormat') || // deprecated
+			this.computeEventTimeFormat();
+
+		displayEventTime = view.opt('displayEventTime');
+		if (displayEventTime == null) {
+			displayEventTime = this.computeDisplayEventTime(); // might be based off of range
+		}
+
+		displayEventEnd = view.opt('displayEventEnd');
+		if (displayEventEnd == null) {
+			displayEventEnd = this.computeDisplayEventEnd(); // might be based off of range
+		}
+
+		this.displayEventTime = displayEventTime;
+		this.displayEventEnd = displayEventEnd;
+	},
+
+
+	// Converts a range with an inclusive `start` and an exclusive `end` into an array of segment objects
+	rangeToSegs: function(range) {
+		// subclasses must implement
+	},
+
+
+	// Diffs the two dates, returning a duration, based on granularity of the grid
+	// TODO: port isTimeScale into this system?
+	diffDates: function(a, b) {
+		if (this.largeUnit) {
+			return diffByUnit(a, b, this.largeUnit);
+		}
+		else {
+			return diffDayTime(a, b);
+		}
+	},
+
+
+	/* Hit Area
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Called before one or more queryHit calls might happen. Should prepare any cached coordinates for queryHit
+	prepareHits: function() {
+	},
+
+
+	// Called when queryHit calls have subsided. Good place to clear any coordinate caches.
+	releaseHits: function() {
+	},
+
+
+	// Given coordinates from the topleft of the document, return data about the date-related area underneath.
+	// Can return an object with arbitrary properties (although top/right/left/bottom are encouraged).
+	// Must have a `grid` property, a reference to this current grid. TODO: avoid this
+	// The returned object will be processed by getHitSpan and getHitEl.
+	queryHit: function(leftOffset, topOffset) {
+	},
+
+
+	// Given position-level information about a date-related area within the grid,
+	// should return an object with at least a start/end date. Can provide other information as well.
+	getHitSpan: function(hit) {
+	},
+
+
+	// Given position-level information about a date-related area within the grid,
+	// should return a jQuery element that best represents it. passed to dayClick callback.
+	getHitEl: function(hit) {
+	},
+
+
+	/* Rendering
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Sets the container element that the grid should render inside of.
+	// Does other DOM-related initializations.
+	setElement: function(el) {
+		var _this = this;
+
+		this.el = el;
+
+		// attach a handler to the grid's root element.
+		// jQuery will take care of unregistering them when removeElement gets called.
+		el.on('mousedown', function(ev) {
+			if (
+				!$(ev.target).is('.fc-event-container *, .fc-more') && // not an an event element, or "more.." link
+				!$(ev.target).closest('.fc-popover').length // not on a popover (like the "more.." events one)
+			) {
+				_this.dayMousedown(ev);
+			}
+		});
+
+		// attach event-element-related handlers. in Grid.events
+		// same garbage collection note as above.
+		this.bindSegHandlers();
+
+		this.bindGlobalHandlers();
+	},
+
+
+	// Removes the grid's container element from the DOM. Undoes any other DOM-related attachments.
+	// DOES NOT remove any content beforehand (doesn't clear events or call unrenderDates), unlike View
+	removeElement: function() {
+		this.unbindGlobalHandlers();
+
+		this.el.remove();
+
+		// NOTE: we don't null-out this.el for the same reasons we don't do it within View::removeElement
+	},
+
+
+	// Renders the basic structure of grid view before any content is rendered
+	renderSkeleton: function() {
+		// subclasses should implement
+	},
+
+
+	// Renders the grid's date-related content (like areas that represent days/times).
+	// Assumes setRange has already been called and the skeleton has already been rendered.
+	renderDates: function() {
+		// subclasses should implement
+	},
+
+
+	// Unrenders the grid's date-related content
+	unrenderDates: function() {
+		// subclasses should implement
+	},
+
+
+	/* Handlers
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Binds DOM handlers to elements that reside outside the grid, such as the document
+	bindGlobalHandlers: function() {
+		$(document).on('dragstart sortstart', this.externalDragStartProxy); // jqui
+	},
+
+
+	// Unbinds DOM handlers from elements that reside outside the grid
+	unbindGlobalHandlers: function() {
+		$(document).off('dragstart sortstart', this.externalDragStartProxy); // jqui
+	},
+
+
+	// Process a mousedown on an element that represents a day. For day clicking and selecting.
+	dayMousedown: function(ev) {
+		var _this = this;
+		var view = this.view;
+		var isSelectable = view.opt('selectable');
+		var dayClickHit; // null if invalid dayClick
+		var selectionSpan; // null if invalid selection
+
+		// this listener tracks a mousedown on a day element, and a subsequent drag.
+		// if the drag ends on the same day, it is a 'dayClick'.
+		// if 'selectable' is enabled, this listener also detects selections.
+		var dragListener = new HitDragListener(this, {
+			//distance: 5, // needs more work if we want dayClick to fire correctly
+			scroll: view.opt('dragScroll'),
+			dragStart: function() {
+				view.unselect(); // since we could be rendering a new selection, we want to clear any old one
+			},
+			hitOver: function(hit, isOrig, origHit) {
+				if (origHit) { // click needs to have started on a hit
+					dayClickHit = isOrig ? hit : null; // single-hit selection is a day click
+					if (isSelectable) {
+						selectionSpan = _this.computeSelection(
+							_this.getHitSpan(origHit),
+							_this.getHitSpan(hit)
+						);
+						if (selectionSpan) {
+							_this.renderSelection(selectionSpan);
+						}
+						else if (selectionSpan === false) {
+							disableCursor();
+						}
+					}
+				}
+			},
+			hitOut: function() {
+				dayClickHit = null;
+				selectionSpan = null;
+				_this.unrenderSelection();
+				enableCursor();
+			},
+			listenStop: function(ev) {
+				if (dayClickHit) {
+					view.triggerDayClick(
+						_this.getHitSpan(dayClickHit).start,
+						_this.getHitEl(dayClickHit),
+						ev
+					);
 				}
-				if (options == 'destroy') {
-					$.removeData(this, 'fullCalendar');
+				if (selectionSpan) {
+					// the selection will already have been rendered. just report it
+					view.reportSelection(selectionSpan, ev);
 				}
+				enableCursor();
 			}
 		});
-		if (res !== undefined) {
-			return res;
+
+		dragListener.mousedown(ev); // start listening, which will eventually initiate a dragStart
+	},
+
+
+	/* Event Helper
+	------------------------------------------------------------------------------------------------------------------*/
+	// TODO: should probably move this to Grid.events, like we did event dragging / resizing
+
+
+	// Renders a mock event over the given range
+	renderRangeHelper: function(range, sourceSeg) {
+		var fakeEvent = this.fabricateHelperEvent(range, sourceSeg);
+
+		this.renderHelper(fakeEvent, sourceSeg); // do the actual rendering
+	},
+
+
+	// Builds a fake event given a date range it should cover, and a segment is should be inspired from.
+	// The range's end can be null, in which case the mock event that is rendered will have a null end time.
+	// `sourceSeg` is the internal segment object involved in the drag. If null, something external is dragging.
+	fabricateHelperEvent: function(range, sourceSeg) {
+		var fakeEvent = sourceSeg ? createObject(sourceSeg.event) : {}; // mask the original event object if possible
+
+		fakeEvent.start = range.start.clone();
+		fakeEvent.end = range.end ? range.end.clone() : null;
+		fakeEvent.allDay = null; // force it to be freshly computed by normalizeEventRange
+		this.view.calendar.normalizeEventRange(fakeEvent);
+
+		// this extra className will be useful for differentiating real events from mock events in CSS
+		fakeEvent.className = (fakeEvent.className || []).concat('fc-helper');
+
+		// if something external is being dragged in, don't render a resizer
+		if (!sourceSeg) {
+			fakeEvent.editable = false;
+		}
+
+		return fakeEvent;
+	},
+
+
+	// Renders a mock event
+	renderHelper: function(event, sourceSeg) {
+		// subclasses must implement
+	},
+
+
+	// Unrenders a mock event
+	unrenderHelper: function() {
+		// subclasses must implement
+	},
+
+
+	/* Selection
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Renders a visual indication of a selection. Will highlight by default but can be overridden by subclasses.
+	renderSelection: function(range) {
+		this.renderHighlight(this.selectionRangeToSegs(range));
+	},
+
+
+	// Unrenders any visual indications of a selection. Will unrender a highlight by default.
+	unrenderSelection: function() {
+		this.unrenderHighlight();
+	},
+
+
+	// Given the first and last date-spans of a selection, returns another date-span object.
+	// Subclasses can override and provide additional data in the span object. Will be passed to renderSelection().
+	// Will return false if the selection is invalid and this should be indicated to the user.
+	// Will return null/undefined if a selection invalid but no error should be reported.
+	computeSelection: function(span0, span1) {
+		var dates = [ span0.start, span0.end, span1.start, span1.end ];
+		var combinedSpan;
+
+		dates.sort(compareNumbers); // sorts chronologically. works with Moments
+		combinedSpan = { start: dates[0].clone(), end: dates[3].clone() };
+
+		if (!this.view.calendar.isSelectionRangeAllowed(combinedSpan)) {
+			return false;
+		}
+
+		return combinedSpan;
+	},
+
+
+	selectionRangeToSegs: function(range) {
+		return this.rangeToSegs(range);
+	},
+
+
+	/* Highlight
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Renders an emphasis on the given date range. Given an array of segments.
+	renderHighlight: function(segs) {
+		this.renderFill('highlight', segs);
+	},
+
+
+	// Unrenders the emphasis on a date range
+	unrenderHighlight: function() {
+		this.unrenderFill('highlight');
+	},
+
+
+	// Generates an array of classNames for rendering the highlight. Used by the fill system.
+	highlightSegClasses: function() {
+		return [ 'fc-highlight' ];
+	},
+
+
+	/* Fill System (highlight, background events, business hours)
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Renders a set of rectangles over the given segments of time.
+	// MUST RETURN a subset of segs, the segs that were actually rendered.
+	// Responsible for populating this.elsByFill. TODO: better API for expressing this requirement
+	renderFill: function(type, segs) {
+		// subclasses must implement
+	},
+
+
+	// Unrenders a specific type of fill that is currently rendered on the grid
+	unrenderFill: function(type) {
+		var el = this.elsByFill[type];
+
+		if (el) {
+			el.remove();
+			delete this.elsByFill[type];
+		}
+	},
+
+
+	// Renders and assigns an `el` property for each fill segment. Generic enough to work with different types.
+	// Only returns segments that successfully rendered.
+	// To be harnessed by renderFill (implemented by subclasses).
+	// Analagous to renderFgSegEls.
+	renderFillSegEls: function(type, segs) {
+		var _this = this;
+		var segElMethod = this[type + 'SegEl'];
+		var html = '';
+		var renderedSegs = [];
+		var i;
+
+		if (segs.length) {
+
+			// build a large concatenation of segment HTML
+			for (i = 0; i < segs.length; i++) {
+				html += this.fillSegHtml(type, segs[i]);
+			}
+
+			// Grab individual elements from the combined HTML string. Use each as the default rendering.
+			// Then, compute the 'el' for each segment.
+			$(html).each(function(i, node) {
+				var seg = segs[i];
+				var el = $(node);
+
+				// allow custom filter methods per-type
+				if (segElMethod) {
+					el = segElMethod.call(_this, seg, el);
+				}
+
+				if (el) { // custom filters did not cancel the render
+					el = $(el); // allow custom filter to return raw DOM node
+
+					// correct element type? (would be bad if a non-TD were inserted into a table for example)
+					if (el.is(_this.fillSegTag)) {
+						seg.el = el;
+						renderedSegs.push(seg);
+					}
+				}
+			});
+		}
+
+		return renderedSegs;
+	},
+
+
+	fillSegTag: 'div', // subclasses can override
+
+
+	// Builds the HTML needed for one fill segment. Generic enought o work with different types.
+	fillSegHtml: function(type, seg) {
+
+		// custom hooks per-type
+		var classesMethod = this[type + 'SegClasses'];
+		var cssMethod = this[type + 'SegCss'];
+
+		var classes = classesMethod ? classesMethod.call(this, seg) : [];
+		var css = cssToStr(cssMethod ? cssMethod.call(this, seg) : {});
+
+		return '<' + this.fillSegTag +
+			(classes.length ? ' class="' + classes.join(' ') + '"' : '') +
+			(css ? ' style="' + css + '"' : '') +
+			' />';
+	},
+
+
+
+	/* Generic rendering utilities for subclasses
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Computes HTML classNames for a single-day element
+	getDayClasses: function(date) {
+		var view = this.view;
+		var today = view.calendar.getNow().stripTime();
+		var classes = [ 'fc-' + dayIDs[date.day()] ];
+
+		if (
+			view.intervalDuration.as('months') == 1 &&
+			date.month() != view.intervalStart.month()
+		) {
+			classes.push('fc-other-month');
+		}
+
+		if (date.isSame(today, 'day')) {
+			classes.push(
+				'fc-today',
+				view.highlightStateClass
+			);
+		}
+		else if (date < today) {
+			classes.push('fc-past');
 		}
-		return this;
+		else {
+			classes.push('fc-future');
+		}
+
+		return classes;
 	}
-	
-	
-	// would like to have this logic in EventManager, but needs to happen before options are recursively extended
-	var eventSources = options.eventSources || [];
-	delete options.eventSources;
-	if (options.events) {
-		eventSources.push(options.events);
-		delete options.events;
+
+});
+
+;;
+
+/* Event-rendering and event-interaction methods for the abstract Grid class
+----------------------------------------------------------------------------------------------------------------------*/
+
+Grid.mixin({
+
+	mousedOverSeg: null, // the segment object the user's mouse is over. null if over nothing
+	isDraggingSeg: false, // is a segment being dragged? boolean
+	isResizingSeg: false, // is a segment being resized? boolean
+	isDraggingExternal: false, // jqui-dragging an external element? boolean
+	segs: null, // the event segments currently rendered in the grid
+
+
+	// Renders the given events onto the grid
+	renderEvents: function(events) {
+		var segs = this.eventsToSegs(events);
+		var bgSegs = [];
+		var fgSegs = [];
+		var i, seg;
+
+		for (i = 0; i < segs.length; i++) {
+			seg = segs[i];
+
+			if (isBgEvent(seg.event)) {
+				bgSegs.push(seg);
+			}
+			else {
+				fgSegs.push(seg);
+			}
+		}
+
+		// Render each different type of segment.
+		// Each function may return a subset of the segs, segs that were actually rendered.
+		bgSegs = this.renderBgSegs(bgSegs) || bgSegs;
+		fgSegs = this.renderFgSegs(fgSegs) || fgSegs;
+
+		this.segs = bgSegs.concat(fgSegs);
+	},
+
+
+	// Unrenders all events currently rendered on the grid
+	unrenderEvents: function() {
+		this.triggerSegMouseout(); // trigger an eventMouseout if user's mouse is over an event
+
+		this.unrenderFgSegs();
+		this.unrenderBgSegs();
+
+		this.segs = null;
+	},
+
+
+	// Retrieves all rendered segment objects currently rendered on the grid
+	getEventSegs: function() {
+		return this.segs || [];
+	},
+
+
+	/* Foreground Segment Rendering
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Renders foreground event segments onto the grid. May return a subset of segs that were rendered.
+	renderFgSegs: function(segs) {
+		// subclasses must implement
+	},
+
+
+	// Unrenders all currently rendered foreground segments
+	unrenderFgSegs: function() {
+		// subclasses must implement
+	},
+
+
+	// Renders and assigns an `el` property for each foreground event segment.
+	// Only returns segments that successfully rendered.
+	// A utility that subclasses may use.
+	renderFgSegEls: function(segs, disableResizing) {
+		var view = this.view;
+		var html = '';
+		var renderedSegs = [];
+		var i;
+
+		if (segs.length) { // don't build an empty html string
+
+			// build a large concatenation of event segment HTML
+			for (i = 0; i < segs.length; i++) {
+				html += this.fgSegHtml(segs[i], disableResizing);
+			}
+
+			// Grab individual elements from the combined HTML string. Use each as the default rendering.
+			// Then, compute the 'el' for each segment. An el might be null if the eventRender callback returned false.
+			$(html).each(function(i, node) {
+				var seg = segs[i];
+				var el = view.resolveEventEl(seg.event, $(node));
+
+				if (el) {
+					el.data('fc-seg', seg); // used by handlers
+					seg.el = el;
+					renderedSegs.push(seg);
+				}
+			});
+		}
+
+		return renderedSegs;
+	},
+
+
+	// Generates the HTML for the default rendering of a foreground event segment. Used by renderFgSegEls()
+	fgSegHtml: function(seg, disableResizing) {
+		// subclasses should implement
+	},
+
+
+	/* Background Segment Rendering
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Renders the given background event segments onto the grid.
+	// Returns a subset of the segs that were actually rendered.
+	renderBgSegs: function(segs) {
+		return this.renderFill('bgEvent', segs);
+	},
+
+
+	// Unrenders all the currently rendered background event segments
+	unrenderBgSegs: function() {
+		this.unrenderFill('bgEvent');
+	},
+
+
+	// Renders a background event element, given the default rendering. Called by the fill system.
+	bgEventSegEl: function(seg, el) {
+		return this.view.resolveEventEl(seg.event, el); // will filter through eventRender
+	},
+
+
+	// Generates an array of classNames to be used for the default rendering of a background event.
+	// Called by the fill system.
+	bgEventSegClasses: function(seg) {
+		var event = seg.event;
+		var source = event.source || {};
+
+		return [ 'fc-bgevent' ].concat(
+			event.className,
+			source.className || []
+		);
+	},
+
+
+	// Generates a semicolon-separated CSS string to be used for the default rendering of a background event.
+	// Called by the fill system.
+	// TODO: consolidate with getEventSkinCss?
+	bgEventSegCss: function(seg) {
+		var view = this.view;
+		var event = seg.event;
+		var source = event.source || {};
+
+		return {
+			'background-color':
+				event.backgroundColor ||
+				event.color ||
+				source.backgroundColor ||
+				source.color ||
+				view.opt('eventBackgroundColor') ||
+				view.opt('eventColor')
+		};
+	},
+
+
+	// Generates an array of classNames to be used for the rendering business hours overlay. Called by the fill system.
+	businessHoursSegClasses: function(seg) {
+		return [ 'fc-nonbusiness', 'fc-bgevent' ];
+	},
+
+
+	/* Handlers
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Attaches event-element-related handlers to the container element and leverage bubbling
+	bindSegHandlers: function() {
+		var _this = this;
+		var view = this.view;
+
+		$.each(
+			{
+				mouseenter: function(seg, ev) {
+					_this.triggerSegMouseover(seg, ev);
+				},
+				mouseleave: function(seg, ev) {
+					_this.triggerSegMouseout(seg, ev);
+				},
+				click: function(seg, ev) {
+					return view.trigger('eventClick', this, seg.event, ev); // can return `false` to cancel
+				},
+				mousedown: function(seg, ev) {
+					if ($(ev.target).is('.fc-resizer') && view.isEventResizable(seg.event)) {
+						_this.segResizeMousedown(seg, ev, $(ev.target).is('.fc-start-resizer'));
+					}
+					else if (view.isEventDraggable(seg.event)) {
+						_this.segDragMousedown(seg, ev);
+					}
+				}
+			},
+			function(name, func) {
+				// attach the handler to the container element and only listen for real event elements via bubbling
+				_this.el.on(name, '.fc-event-container > *', function(ev) {
+					var seg = $(this).data('fc-seg'); // grab segment data. put there by View::renderEvents
+
+					// only call the handlers if there is not a drag/resize in progress
+					if (seg && !_this.isDraggingSeg && !_this.isResizingSeg) {
+						return func.call(this, seg, ev); // `this` will be the event element
+					}
+				});
+			}
+		);
+	},
+
+
+	// Updates internal state and triggers handlers for when an event element is moused over
+	triggerSegMouseover: function(seg, ev) {
+		if (!this.mousedOverSeg) {
+			this.mousedOverSeg = seg;
+			this.view.trigger('eventMouseover', seg.el[0], seg.event, ev);
+		}
+	},
+
+
+	// Updates internal state and triggers handlers for when an event element is moused out.
+	// Can be given no arguments, in which case it will mouseout the segment that was previously moused over.
+	triggerSegMouseout: function(seg, ev) {
+		ev = ev || {}; // if given no args, make a mock mouse event
+
+		if (this.mousedOverSeg) {
+			seg = seg || this.mousedOverSeg; // if given no args, use the currently moused-over segment
+			this.mousedOverSeg = null;
+			this.view.trigger('eventMouseout', seg.el[0], seg.event, ev);
+		}
+	},
+
+
+	/* Event Dragging
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Called when the user does a mousedown on an event, which might lead to dragging.
+	// Generic enough to work with any type of Grid.
+	segDragMousedown: function(seg, ev) {
+		var _this = this;
+		var view = this.view;
+		var calendar = view.calendar;
+		var el = seg.el;
+		var event = seg.event;
+		var dropLocation; // a "span" (start/end possibly with additional properties)
+
+		// A clone of the original element that will move with the mouse
+		var mouseFollower = new MouseFollower(seg.el, {
+			parentEl: view.el,
+			opacity: view.opt('dragOpacity'),
+			revertDuration: view.opt('dragRevertDuration'),
+			zIndex: 2 // one above the .fc-view
+		});
+
+		// Tracks mouse movement over the *view's* coordinate map. Allows dragging and dropping between subcomponents
+		// of the view.
+		var dragListener = new HitDragListener(view, {
+			distance: 5,
+			scroll: view.opt('dragScroll'),
+			subjectEl: el,
+			subjectCenter: true,
+			listenStart: function(ev) {
+				mouseFollower.hide(); // don't show until we know this is a real drag
+				mouseFollower.start(ev);
+			},
+			dragStart: function(ev) {
+				_this.triggerSegMouseout(seg, ev); // ensure a mouseout on the manipulated event has been reported
+				_this.segDragStart(seg, ev);
+				view.hideEvent(event); // hide all event segments. our mouseFollower will take over
+			},
+			hitOver: function(hit, isOrig, origHit) {
+
+				// starting hit could be forced (DayGrid.limit)
+				if (seg.hit) {
+					origHit = seg.hit;
+				}
+
+				// since we are querying the parent view, might not belong to this grid
+				dropLocation = _this.computeEventDrop(
+					origHit.component.getHitSpan(origHit),
+					hit.component.getHitSpan(hit),
+					event
+				);
+
+				if (dropLocation && !calendar.isEventRangeAllowed(dropLocation, event)) {
+					disableCursor();
+					dropLocation = null;
+				}
+
+				// if a valid drop location, have the subclass render a visual indication
+				if (dropLocation && view.renderDrag(dropLocation, seg)) {
+					mouseFollower.hide(); // if the subclass is already using a mock event "helper", hide our own
+				}
+				else {
+					mouseFollower.show(); // otherwise, have the helper follow the mouse (no snapping)
+				}
+
+				if (isOrig) {
+					dropLocation = null; // needs to have moved hits to be a valid drop
+				}
+			},
+			hitOut: function() { // called before mouse moves to a different hit OR moved out of all hits
+				view.unrenderDrag(); // unrender whatever was done in renderDrag
+				mouseFollower.show(); // show in case we are moving out of all hits
+				dropLocation = null;
+			},
+			hitDone: function() { // Called after a hitOut OR before a dragStop
+				enableCursor();
+			},
+			dragStop: function(ev) {
+				// do revert animation if hasn't changed. calls a callback when finished (whether animation or not)
+				mouseFollower.stop(!dropLocation, function() {
+					view.unrenderDrag();
+					view.showEvent(event);
+					_this.segDragStop(seg, ev);
+
+					if (dropLocation) {
+						view.reportEventDrop(event, dropLocation, this.largeUnit, el, ev);
+					}
+				});
+			},
+			listenStop: function() {
+				mouseFollower.stop(); // put in listenStop in case there was a mousedown but the drag never started
+			}
+		});
+
+		dragListener.mousedown(ev); // start listening, which will eventually lead to a dragStart
+	},
+
+
+	// Called before event segment dragging starts
+	segDragStart: function(seg, ev) {
+		this.isDraggingSeg = true;
+		this.view.trigger('eventDragStart', seg.el[0], seg.event, ev, {}); // last argument is jqui dummy
+	},
+
+
+	// Called after event segment dragging stops
+	segDragStop: function(seg, ev) {
+		this.isDraggingSeg = false;
+		this.view.trigger('eventDragStop', seg.el[0], seg.event, ev, {}); // last argument is jqui dummy
+	},
+
+
+	// Given the spans an event drag began, and the span event was dropped, calculates the new start/end/allDay
+	// values for the event. Subclasses may override and set additional properties to be used by renderDrag.
+	// A falsy returned value indicates an invalid drop.
+	computeEventDrop: function(startSpan, endSpan, event) {
+		var calendar = this.view.calendar;
+		var dragStart = startSpan.start;
+		var dragEnd = endSpan.start;
+		var delta;
+		var dropLocation;
+
+		if (dragStart.hasTime() === dragEnd.hasTime()) {
+			delta = this.diffDates(dragEnd, dragStart);
+
+			// if an all-day event was in a timed area and it was dragged to a different time,
+			// guarantee an end and adjust start/end to have times
+			if (event.allDay && durationHasTime(delta)) {
+				dropLocation = {
+					start: event.start.clone(),
+					end: calendar.getEventEnd(event), // will be an ambig day
+					allDay: false // for normalizeEventRangeTimes
+				};
+				calendar.normalizeEventRangeTimes(dropLocation);
+			}
+			// othewise, work off existing values
+			else {
+				dropLocation = {
+					start: event.start.clone(),
+					end: event.end ? event.end.clone() : null,
+					allDay: event.allDay // keep it the same
+				};
+			}
+
+			dropLocation.start.add(delta);
+			if (dropLocation.end) {
+				dropLocation.end.add(delta);
+			}
+		}
+		else {
+			// if switching from day <-> timed, start should be reset to the dropped date, and the end cleared
+			dropLocation = {
+				start: dragEnd.clone(),
+				end: null, // end should be cleared
+				allDay: !dragEnd.hasTime()
+			};
+		}
+
+		return dropLocation;
+	},
+
+
+	// Utility for apply dragOpacity to a jQuery set
+	applyDragOpacity: function(els) {
+		var opacity = this.view.opt('dragOpacity');
+
+		if (opacity != null) {
+			els.each(function(i, node) {
+				// Don't use jQuery (will set an IE filter), do it the old fashioned way.
+				// In IE8, a helper element will disappears if there's a filter.
+				node.style.opacity = opacity;
+			});
+		}
+	},
+
+
+	/* External Element Dragging
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Called when a jQuery UI drag is initiated anywhere in the DOM
+	externalDragStart: function(ev, ui) {
+		var view = this.view;
+		var el;
+		var accept;
+
+		if (view.opt('droppable')) { // only listen if this setting is on
+			el = $((ui ? ui.item : null) || ev.target);
+
+			// Test that the dragged element passes the dropAccept selector or filter function.
+			// FYI, the default is "*" (matches all)
+			accept = view.opt('dropAccept');
+			if ($.isFunction(accept) ? accept.call(el[0], el) : el.is(accept)) {
+				if (!this.isDraggingExternal) { // prevent double-listening if fired twice
+					this.listenToExternalDrag(el, ev, ui);
+				}
+			}
+		}
+	},
+
+
+	// Called when a jQuery UI drag starts and it needs to be monitored for dropping
+	listenToExternalDrag: function(el, ev, ui) {
+		var _this = this;
+		var meta = getDraggedElMeta(el); // extra data about event drop, including possible event to create
+		var dropLocation; // a null value signals an unsuccessful drag
+
+		// listener that tracks mouse movement over date-associated pixel regions
+		var dragListener = new HitDragListener(this, {
+			listenStart: function() {
+				_this.isDraggingExternal = true;
+			},
+			hitOver: function(hit) {
+				dropLocation = _this.computeExternalDrop(
+					hit.component.getHitSpan(hit), // since we are querying the parent view, might not belong to this grid
+					meta
+				);
+				if (dropLocation) {
+					_this.renderDrag(dropLocation); // called without a seg parameter
+				}
+				else { // invalid hit
+					disableCursor();
+				}
+			},
+			hitOut: function() {
+				dropLocation = null; // signal unsuccessful
+				_this.unrenderDrag();
+				enableCursor();
+			},
+			dragStop: function() {
+				_this.unrenderDrag();
+				enableCursor();
+
+				if (dropLocation) { // element was dropped on a valid hit
+					_this.view.reportExternalDrop(meta, dropLocation, el, ev, ui);
+				}
+			},
+			listenStop: function() {
+				_this.isDraggingExternal = false;
+			}
+		});
+
+		dragListener.startDrag(ev); // start listening immediately
+	},
+
+
+	// Given a hit to be dropped upon, and misc data associated with the jqui drag (guaranteed to be a plain object),
+	// returns start/end dates for the event that would result from the hypothetical drop. end might be null.
+	// Returning a null value signals an invalid drop hit.
+	computeExternalDrop: function(span, meta) {
+		var dropLocation = {
+			start: span.start,
+			end: null
+		};
+
+		// if dropped on an all-day span, and element's metadata specified a time, set it
+		if (meta.startTime && !dropLocation.start.hasTime()) {
+			dropLocation.start.time(meta.startTime);
+		}
+
+		if (meta.duration) {
+			dropLocation.end = dropLocation.start.clone().add(meta.duration);
+		}
+
+		if (!this.view.calendar.isExternalDropRangeAllowed(dropLocation, meta.eventProps)) {
+			return null;
+		}
+
+		return dropLocation;
+	},
+
+
+
+	/* Drag Rendering (for both events and an external elements)
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Renders a visual indication of an event or external element being dragged.
+	// `dropLocation` contains hypothetical start/end/allDay values the event would have if dropped. end can be null.
+	// `seg` is the internal segment object that is being dragged. If dragging an external element, `seg` is null.
+	// A truthy returned value indicates this method has rendered a helper element.
+	renderDrag: function(dropLocation, seg) {
+		// subclasses must implement
+	},
+
+
+	// Unrenders a visual indication of an event or external element being dragged
+	unrenderDrag: function() {
+		// subclasses must implement
+	},
+
+
+	/* Resizing
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Called when the user does a mousedown on an event's resizer, which might lead to resizing.
+	// Generic enough to work with any type of Grid.
+	segResizeMousedown: function(seg, ev, isStart) {
+		var _this = this;
+		var view = this.view;
+		var calendar = view.calendar;
+		var el = seg.el;
+		var event = seg.event;
+		var eventEnd = calendar.getEventEnd(event);
+		var resizeLocation; // falsy if invalid resize
+
+		// Tracks mouse movement over the *grid's* coordinate map
+		var dragListener = new HitDragListener(this, {
+			distance: 5,
+			scroll: view.opt('dragScroll'),
+			subjectEl: el,
+			dragStart: function(ev) {
+				_this.triggerSegMouseout(seg, ev); // ensure a mouseout on the manipulated event has been reported
+				_this.segResizeStart(seg, ev);
+			},
+			hitOver: function(hit, isOrig, origHit) {
+				var origHitSpan = _this.getHitSpan(origHit);
+				var hitSpan = _this.getHitSpan(hit);
+
+				resizeLocation = isStart ?
+					_this.computeEventStartResize(origHitSpan, hitSpan, event) :
+					_this.computeEventEndResize(origHitSpan, hitSpan, event);
+
+				if (resizeLocation) {
+					if (!calendar.isEventRangeAllowed(resizeLocation, event)) {
+						disableCursor();
+						resizeLocation = null;
+					}
+					// no change? (TODO: how does this work with timezones?)
+					else if (resizeLocation.start.isSame(event.start) && resizeLocation.end.isSame(eventEnd)) {
+						resizeLocation = null;
+					}
+				}
+
+				if (resizeLocation) {
+					view.hideEvent(event);
+					_this.renderEventResize(resizeLocation, seg);
+				}
+			},
+			hitOut: function() { // called before mouse moves to a different hit OR moved out of all hits
+				resizeLocation = null;
+			},
+			hitDone: function() { // resets the rendering to show the original event
+				_this.unrenderEventResize();
+				view.showEvent(event);
+				enableCursor();
+			},
+			dragStop: function(ev) {
+				_this.segResizeStop(seg, ev);
+
+				if (resizeLocation) { // valid date to resize to?
+					view.reportEventResize(event, resizeLocation, this.largeUnit, el, ev);
+				}
+			}
+		});
+
+		dragListener.mousedown(ev); // start listening, which will eventually lead to a dragStart
+	},
+
+
+	// Called before event segment resizing starts
+	segResizeStart: function(seg, ev) {
+		this.isResizingSeg = true;
+		this.view.trigger('eventResizeStart', seg.el[0], seg.event, ev, {}); // last argument is jqui dummy
+	},
+
+
+	// Called after event segment resizing stops
+	segResizeStop: function(seg, ev) {
+		this.isResizingSeg = false;
+		this.view.trigger('eventResizeStop', seg.el[0], seg.event, ev, {}); // last argument is jqui dummy
+	},
+
+
+	// Returns new date-information for an event segment being resized from its start
+	computeEventStartResize: function(startSpan, endSpan, event) {
+		return this.computeEventResize('start', startSpan, endSpan, event);
+	},
+
+
+	// Returns new date-information for an event segment being resized from its end
+	computeEventEndResize: function(startSpan, endSpan, event) {
+		return this.computeEventResize('end', startSpan, endSpan, event);
+	},
+
+
+	// Returns new date-information for an event segment being resized from its start OR end
+	// `type` is either 'start' or 'end'
+	computeEventResize: function(type, startSpan, endSpan, event) {
+		var calendar = this.view.calendar;
+		var delta = this.diffDates(endSpan[type], startSpan[type]);
+		var range;
+		var defaultDuration;
+
+		// build original values to work from, guaranteeing a start and end
+		range = {
+			start: event.start.clone(),
+			end: calendar.getEventEnd(event),
+			allDay: event.allDay
+		};
+
+		// if an all-day event was in a timed area and was resized to a time, adjust start/end to have times
+		if (range.allDay && durationHasTime(delta)) {
+			range.allDay = false;
+			calendar.normalizeEventRangeTimes(range);
+		}
+
+		range[type].add(delta); // apply delta to start or end
+
+		// if the event was compressed too small, find a new reasonable duration for it
+		if (!range.start.isBefore(range.end)) {
+
+			defaultDuration =
+				this.minResizeDuration || // TODO: hack
+				(event.allDay ?
+					calendar.defaultAllDayEventDuration :
+					calendar.defaultTimedEventDuration);
+
+			if (type == 'start') { // resizing the start?
+				range.start = range.end.clone().subtract(defaultDuration);
+			}
+			else { // resizing the end?
+				range.end = range.start.clone().add(defaultDuration);
+			}
+		}
+
+		return range;
+	},
+
+
+	// Renders a visual indication of an event being resized.
+	// `range` has the updated dates of the event. `seg` is the original segment object involved in the drag.
+	renderEventResize: function(range, seg) {
+		// subclasses must implement
+	},
+
+
+	// Unrenders a visual indication of an event being resized.
+	unrenderEventResize: function() {
+		// subclasses must implement
+	},
+
+
+	/* Rendering Utils
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Compute the text that should be displayed on an event's element.
+	// `range` can be the Event object itself, or something range-like, with at least a `start`.
+	// If event times are disabled, or the event has no time, will return a blank string.
+	// If not specified, formatStr will default to the eventTimeFormat setting,
+	// and displayEnd will default to the displayEventEnd setting.
+	getEventTimeText: function(range, formatStr, displayEnd) {
+
+		if (formatStr == null) {
+			formatStr = this.eventTimeFormat;
+		}
+
+		if (displayEnd == null) {
+			displayEnd = this.displayEventEnd;
+		}
+
+		if (this.displayEventTime && range.start.hasTime()) {
+			if (displayEnd && range.end) {
+				return this.view.formatRange(range, formatStr);
+			}
+			else {
+				return range.start.format(formatStr);
+			}
+		}
+
+		return '';
+	},
+
+
+	// Generic utility for generating the HTML classNames for an event segment's element
+	getSegClasses: function(seg, isDraggable, isResizable) {
+		var event = seg.event;
+		var classes = [
+			'fc-event',
+			seg.isStart ? 'fc-start' : 'fc-not-start',
+			seg.isEnd ? 'fc-end' : 'fc-not-end'
+		].concat(
+			event.className,
+			event.source ? event.source.className : []
+		);
+
+		if (isDraggable) {
+			classes.push('fc-draggable');
+		}
+		if (isResizable) {
+			classes.push('fc-resizable');
+		}
+
+		return classes;
+	},
+
+
+	// Utility for generating event skin-related CSS properties
+	getEventSkinCss: function(event) {
+		var view = this.view;
+		var source = event.source || {};
+		var eventColor = event.color;
+		var sourceColor = source.color;
+		var optionColor = view.opt('eventColor');
+
+		return {
+			'background-color':
+				event.backgroundColor ||
+				eventColor ||
+				source.backgroundColor ||
+				sourceColor ||
+				view.opt('eventBackgroundColor') ||
+				optionColor,
+			'border-color':
+				event.borderColor ||
+				eventColor ||
+				source.borderColor ||
+				sourceColor ||
+				view.opt('eventBorderColor') ||
+				optionColor,
+			color:
+				event.textColor ||
+				source.textColor ||
+				view.opt('eventTextColor')
+		};
+	},
+
+
+	/* Converting events -> ranges -> segs
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Converts an array of event objects into an array of event segment objects.
+	// A custom `rangeToSegsFunc` may be given for arbitrarily slicing up events.
+	// Doesn't guarantee an order for the resulting array.
+	eventsToSegs: function(events, rangeToSegsFunc) {
+		var eventRanges = this.eventsToRanges(events);
+		var segs = [];
+		var i;
+
+		for (i = 0; i < eventRanges.length; i++) {
+			segs.push.apply(
+				segs,
+				this.eventRangeToSegs(eventRanges[i], rangeToSegsFunc)
+			);
+		}
+
+		return segs;
+	},
+
+
+	// Converts an array of events into an array of "range" objects.
+	// A "range" object is a plain object with start/end properties denoting the time it covers. Also an event property.
+	// For "normal" events, this will be identical to the event's start/end, but for "inverse-background" events,
+	// will create an array of ranges that span the time *not* covered by the given event.
+	// Doesn't guarantee an order for the resulting array.
+	eventsToRanges: function(events) {
+		var _this = this;
+		var eventsById = groupEventsById(events);
+		var ranges = [];
+
+		// group by ID so that related inverse-background events can be rendered together
+		$.each(eventsById, function(id, eventGroup) {
+			if (eventGroup.length) {
+				ranges.push.apply(
+					ranges,
+					isInverseBgEvent(eventGroup[0]) ?
+						_this.eventsToInverseRanges(eventGroup) :
+						_this.eventsToNormalRanges(eventGroup)
+				);
+			}
+		});
+
+		return ranges;
+	},
+
+
+	// Converts an array of "normal" events (not inverted rendering) into a parallel array of ranges
+	eventsToNormalRanges: function(events) {
+		var calendar = this.view.calendar;
+		var ranges = [];
+		var i, event;
+		var eventStart, eventEnd;
+
+		for (i = 0; i < events.length; i++) {
+			event = events[i];
+
+			// make copies and normalize by stripping timezone
+			eventStart = event.start.clone().stripZone();
+			eventEnd = calendar.getEventEnd(event).stripZone();
+
+			ranges.push({
+				event: event,
+				start: eventStart,
+				end: eventEnd,
+				eventStartMS: +eventStart,
+				eventDurationMS: eventEnd - eventStart
+			});
+		}
+
+		return ranges;
+	},
+
+
+	// Converts an array of events, with inverse-background rendering, into an array of range objects.
+	// The range objects will cover all the time NOT covered by the events.
+	eventsToInverseRanges: function(events) {
+		var view = this.view;
+		var viewStart = view.start.clone().stripZone(); // normalize timezone
+		var viewEnd = view.end.clone().stripZone(); // normalize timezone
+		var normalRanges = this.eventsToNormalRanges(events); // will give us normalized dates we can use w/o copies
+		var inverseRanges = [];
+		var event0 = events[0]; // assign this to each range's `.event`
+		var start = viewStart; // the end of the previous range. the start of the new range
+		var i, normalRange;
+
+		// ranges need to be in order. required for our date-walking algorithm
+		normalRanges.sort(compareNormalRanges);
+
+		for (i = 0; i < normalRanges.length; i++) {
+			normalRange = normalRanges[i];
+
+			// add the span of time before the event (if there is any)
+			if (normalRange.start > start) { // compare millisecond time (skip any ambig logic)
+				inverseRanges.push({
+					event: event0,
+					start: start,
+					end: normalRange.start
+				});
+			}
+
+			start = normalRange.end;
+		}
+
+		// add the span of time after the last event (if there is any)
+		if (start < viewEnd) { // compare millisecond time (skip any ambig logic)
+			inverseRanges.push({
+				event: event0,
+				start: start,
+				end: viewEnd
+			});
+		}
+
+		return inverseRanges;
+	},
+
+
+	// Slices the given event range into one or more segment objects.
+	// A `rangeToSegsFunc` custom slicing function can be given.
+	eventRangeToSegs: function(eventRange, rangeToSegsFunc) {
+		var segs;
+		var i, seg;
+
+		eventRange = this.view.calendar.ensureVisibleEventRange(eventRange);
+
+		if (rangeToSegsFunc) {
+			segs = rangeToSegsFunc(eventRange);
+		}
+		else {
+			segs = this.rangeToSegs(eventRange); // defined by the subclass
+		}
+
+		for (i = 0; i < segs.length; i++) {
+			seg = segs[i];
+			seg.event = eventRange.event;
+			seg.eventStartMS = eventRange.eventStartMS;
+			seg.eventDurationMS = eventRange.eventDurationMS;
+		}
+
+		return segs;
+	},
+
+
+	sortSegs: function(segs) {
+		segs.sort(proxy(this, 'compareSegs'));
+	},
+
+
+	// A cmp function for determining which segments should take visual priority
+	// DOES NOT WORK ON INVERTED BACKGROUND EVENTS because they have no eventStartMS/eventDurationMS
+	compareSegs: function(seg1, seg2) {
+		return seg1.eventStartMS - seg2.eventStartMS || // earlier events go first
+			seg2.eventDurationMS - seg1.eventDurationMS || // tie? longer events go first
+			seg2.event.allDay - seg1.event.allDay || // tie? put all-day events first (booleans cast to 0/1)
+			compareByFieldSpecs(seg1.event, seg2.event, this.view.eventOrderSpecs);
+	}
+
+});
+
+
+/* Utilities
+----------------------------------------------------------------------------------------------------------------------*/
+
+
+function isBgEvent(event) { // returns true if background OR inverse-background
+	var rendering = getEventRendering(event);
+	return rendering === 'background' || rendering === 'inverse-background';
+}
+
+
+function isInverseBgEvent(event) {
+	return getEventRendering(event) === 'inverse-background';
+}
+
+
+function getEventRendering(event) {
+	return firstDefined((event.source || {}).rendering, event.rendering);
+}
+
+
+function groupEventsById(events) {
+	var eventsById = {};
+	var i, event;
+
+	for (i = 0; i < events.length; i++) {
+		event = events[i];
+		(eventsById[event._id] || (eventsById[event._id] = [])).push(event);
+	}
+
+	return eventsById;
+}
+
+
+// A cmp function for determining which non-inverted "ranges" (see above) happen earlier
+function compareNormalRanges(range1, range2) {
+	return range1.eventStartMS - range2.eventStartMS; // earlier ranges go first
+}
+
+
+/* External-Dragging-Element Data
+----------------------------------------------------------------------------------------------------------------------*/
+
+// Require all HTML5 data-* attributes used by FullCalendar to have this prefix.
+// A value of '' will query attributes like data-event. A value of 'fc' will query attributes like data-fc-event.
+FC.dataAttrPrefix = '';
+
+// Given a jQuery element that might represent a dragged FullCalendar event, returns an intermediate data structure
+// to be used for Event Object creation.
+// A defined `.eventProps`, even when empty, indicates that an event should be created.
+function getDraggedElMeta(el) {
+	var prefix = FC.dataAttrPrefix;
+	var eventProps; // properties for creating the event, not related to date/time
+	var startTime; // a Duration
+	var duration;
+	var stick;
+
+	if (prefix) { prefix += '-'; }
+	eventProps = el.data(prefix + 'event') || null;
+
+	if (eventProps) {
+		if (typeof eventProps === 'object') {
+			eventProps = $.extend({}, eventProps); // make a copy
+		}
+		else { // something like 1 or true. still signal event creation
+			eventProps = {};
+		}
+
+		// pluck special-cased date/time properties
+		startTime = eventProps.start;
+		if (startTime == null) { startTime = eventProps.time; } // accept 'time' as well
+		duration = eventProps.duration;
+		stick = eventProps.stick;
+		delete eventProps.start;
+		delete eventProps.time;
+		delete eventProps.duration;
+		delete eventProps.stick;
+	}
+
+	// fallback to standalone attribute values for each of the date/time properties
+	if (startTime == null) { startTime = el.data(prefix + 'start'); }
+	if (startTime == null) { startTime = el.data(prefix + 'time'); } // accept 'time' as well
+	if (duration == null) { duration = el.data(prefix + 'duration'); }
+	if (stick == null) { stick = el.data(prefix + 'stick'); }
+
+	// massage into correct data types
+	startTime = startTime != null ? moment.duration(startTime) : null;
+	duration = duration != null ? moment.duration(duration) : null;
+	stick = Boolean(stick);
+
+	return { eventProps: eventProps, startTime: startTime, duration: duration, stick: stick };
+}
+
+
+;;
+
+/*
+A set of rendering and date-related methods for a visual component comprised of one or more rows of day columns.
+Prerequisite: the object being mixed into needs to be a *Grid*
+*/
+var DayTableMixin = FC.DayTableMixin = {
+
+	breakOnWeeks: false, // should create a new row for each week?
+	dayDates: null, // whole-day dates for each column. left to right
+	dayIndices: null, // for each day from start, the offset
+	daysPerRow: null,
+	rowCnt: null,
+	colCnt: null,
+	colHeadFormat: null,
+
+
+	// Populates internal variables used for date calculation and rendering
+	updateDayTable: function() {
+		var view = this.view;
+		var date = this.start.clone();
+		var dayIndex = -1;
+		var dayIndices = [];
+		var dayDates = [];
+		var daysPerRow;
+		var firstDay;
+		var rowCnt;
+
+		while (date.isBefore(this.end)) { // loop each day from start to end
+			if (view.isHiddenDay(date)) {
+				dayIndices.push(dayIndex + 0.5); // mark that it's between indices
+			}
+			else {
+				dayIndex++;
+				dayIndices.push(dayIndex);
+				dayDates.push(date.clone());
+			}
+			date.add(1, 'days');
+		}
+
+		if (this.breakOnWeeks) {
+			// count columns until the day-of-week repeats
+			firstDay = dayDates[0].day();
+			for (daysPerRow = 1; daysPerRow < dayDates.length; daysPerRow++) {
+				if (dayDates[daysPerRow].day() == firstDay) {
+					break;
+				}
+			}
+			rowCnt = Math.ceil(dayDates.length / daysPerRow);
+		}
+		else {
+			rowCnt = 1;
+			daysPerRow = dayDates.length;
+		}
+
+		this.dayDates = dayDates;
+		this.dayIndices = dayIndices;
+		this.daysPerRow = daysPerRow;
+		this.rowCnt = rowCnt;
+		
+		this.updateDayTableCols();
+	},
+
+
+	// Computes and assigned the colCnt property and updates any options that may be computed from it
+	updateDayTableCols: function() {
+		this.colCnt = this.computeColCnt();
+		this.colHeadFormat = this.view.opt('columnFormat') || this.computeColHeadFormat();
+	},
+
+
+	// Determines how many columns there should be in the table
+	computeColCnt: function() {
+		return this.daysPerRow;
+	},
+
+
+	// Computes the ambiguously-timed moment for the given cell
+	getCellDate: function(row, col) {
+		return this.dayDates[
+				this.getCellDayIndex(row, col)
+			].clone();
+	},
+
+
+	// Computes the ambiguously-timed date range for the given cell
+	getCellRange: function(row, col) {
+		var start = this.getCellDate(row, col);
+		var end = start.clone().add(1, 'days');
+
+		return { start: start, end: end };
+	},
+
+
+	// Returns the number of day cells, chronologically, from the first of the grid (0-based)
+	getCellDayIndex: function(row, col) {
+		return row * this.daysPerRow + this.getColDayIndex(col);
+	},
+
+
+	// Returns the numner of day cells, chronologically, from the first cell in *any given row*
+	getColDayIndex: function(col) {
+		if (this.isRTL) {
+			return this.colCnt - 1 - col;
+		}
+		else {
+			return col;
+		}
+	},
+
+
+	// Given a date, returns its chronolocial cell-index from the first cell of the grid.
+	// If the date lies between cells (because of hiddenDays), returns a floating-point value between offsets.
+	// If before the first offset, returns a negative number.
+	// If after the last offset, returns an offset past the last cell offset.
+	// Only works for *start* dates of cells. Will not work for exclusive end dates for cells.
+	getDateDayIndex: function(date) {
+		var dayIndices = this.dayIndices;
+		var dayOffset = date.diff(this.start, 'days');
+
+		if (dayOffset < 0) {
+			return dayIndices[0] - 1;
+		}
+		else if (dayOffset >= dayIndices.length) {
+			return dayIndices[dayIndices.length - 1] + 1;
+		}
+		else {
+			return dayIndices[dayOffset];
+		}
+	},
+
+
+	/* Options
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Computes a default column header formatting string if `colFormat` is not explicitly defined
+	computeColHeadFormat: function() {
+		// if more than one week row, or if there are a lot of columns with not much space,
+		// put just the day numbers will be in each cell
+		if (this.rowCnt > 1 || this.colCnt > 10) {
+			return 'ddd'; // "Sat"
+		}
+		// multiple days, so full single date string WON'T be in title text
+		else if (this.colCnt > 1) {
+			return this.view.opt('dayOfMonthFormat'); // "Sat 12/10"
+		}
+		// single day, so full single date string will probably be in title text
+		else {
+			return 'dddd'; // "Saturday"
+		}
+	},
+
+
+	/* Slicing
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Slices up a date range into a segment for every week-row it intersects with
+	sliceRangeByRow: function(range) {
+		var daysPerRow = this.daysPerRow;
+		var normalRange = this.view.computeDayRange(range); // make whole-day range, considering nextDayThreshold
+		var rangeFirst = this.getDateDayIndex(normalRange.start); // inclusive first index
+		var rangeLast = this.getDateDayIndex(normalRange.end.clone().subtract(1, 'days')); // inclusive last index
+		var segs = [];
+		var row;
+		var rowFirst, rowLast; // inclusive day-index range for current row
+		var segFirst, segLast; // inclusive day-index range for segment
+
+		for (row = 0; row < this.rowCnt; row++) {
+			rowFirst = row * daysPerRow;
+			rowLast = rowFirst + daysPerRow - 1;
+
+			// intersect segment's offset range with the row's
+			segFirst = Math.max(rangeFirst, rowFirst);
+			segLast = Math.min(rangeLast, rowLast);
+
+			// deal with in-between indices
+			segFirst = Math.ceil(segFirst); // in-between starts round to next cell
+			segLast = Math.floor(segLast); // in-between ends round to prev cell
+
+			if (segFirst <= segLast) { // was there any intersection with the current row?
+				segs.push({
+					row: row,
+
+					// normalize to start of row
+					firstRowDayIndex: segFirst - rowFirst,
+					lastRowDayIndex: segLast - rowFirst,
+
+					// must be matching integers to be the segment's start/end
+					isStart: segFirst === rangeFirst,
+					isEnd: segLast === rangeLast
+				});
+			}
+		}
+
+		return segs;
+	},
+
+
+	// Slices up a date range into a segment for every day-cell it intersects with.
+	// TODO: make more DRY with sliceRangeByRow somehow.
+	sliceRangeByDay: function(range) {
+		var daysPerRow = this.daysPerRow;
+		var normalRange = this.view.computeDayRange(range); // make whole-day range, considering nextDayThreshold
+		var rangeFirst = this.getDateDayIndex(normalRange.start); // inclusive first index
+		var rangeLast = this.getDateDayIndex(normalRange.end.clone().subtract(1, 'days')); // inclusive last index
+		var segs = [];
+		var row;
+		var rowFirst, rowLast; // inclusive day-index range for current row
+		var i;
+		var segFirst, segLast; // inclusive day-index range for segment
+
+		for (row = 0; row < this.rowCnt; row++) {
+			rowFirst = row * daysPerRow;
+			rowLast = rowFirst + daysPerRow - 1;
+
+			for (i = rowFirst; i <= rowLast; i++) {
+
+				// intersect segment's offset range with the row's
+				segFirst = Math.max(rangeFirst, i);
+				segLast = Math.min(rangeLast, i);
+
+				// deal with in-between indices
+				segFirst = Math.ceil(segFirst); // in-between starts round to next cell
+				segLast = Math.floor(segLast); // in-between ends round to prev cell
+
+				if (segFirst <= segLast) { // was there any intersection with the current row?
+					segs.push({
+						row: row,
+
+						// normalize to start of row
+						firstRowDayIndex: segFirst - rowFirst,
+						lastRowDayIndex: segLast - rowFirst,
+
+						// must be matching integers to be the segment's start/end
+						isStart: segFirst === rangeFirst,
+						isEnd: segLast === rangeLast
+					});
+				}
+			}
+		}
+
+		return segs;
+	},
+
+
+	/* Header Rendering
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	renderHeadHtml: function() {
+		var view = this.view;
+
+		return '' +
+			'<div class="fc-row ' + view.widgetHeaderClass + '">' +
+				'<table>' +
+					'<thead>' +
+						this.renderHeadTrHtml() +
+					'</thead>' +
+				'</table>' +
+			'</div>';
+	},
+
+
+	renderHeadIntroHtml: function() {
+		return this.renderIntroHtml(); // fall back to generic
+	},
+
+
+	renderHeadTrHtml: function() {
+		return '' +
+			'<tr>' +
+				(this.isRTL ? '' : this.renderHeadIntroHtml()) +
+				this.renderHeadDateCellsHtml() +
+				(this.isRTL ? this.renderHeadIntroHtml() : '') +
+			'</tr>';
+	},
+
+
+	renderHeadDateCellsHtml: function() {
+		var htmls = [];
+		var col, date;
+
+		for (col = 0; col < this.colCnt; col++) {
+			date = this.getCellDate(0, col);
+			htmls.push(this.renderHeadDateCellHtml(date));
+		}
+
+		return htmls.join('');
+	},
+
+
+	renderHeadDateCellHtml: function(date, colspan) {
+		var view = this.view;
+
+		return '' +
+			'<th class="fc-day-header ' + view.widgetHeaderClass + ' fc-' + dayIDs[date.day()] + '"' +
+				(colspan > 1 ? ' colspan="' + colspan + '"' : '') +
+				'>' +
+				htmlEscape(date.format(this.colHeadFormat)) +
+			'</th>';
+	},
+
+
+	/* Background Rendering
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	renderBgTrHtml: function(row) {
+		return '' +
+			'<tr>' +
+				(this.isRTL ? '' : this.renderBgIntroHtml(row)) +
+				this.renderBgCellsHtml(row) +
+				(this.isRTL ? this.renderBgIntroHtml(row) : '') +
+			'</tr>';
+	},
+
+
+	renderBgIntroHtml: function(row) {
+		return this.renderIntroHtml(); // fall back to generic
+	},
+
+
+	renderBgCellsHtml: function(row) {
+		var htmls = [];
+		var col, date;
+
+		for (col = 0; col < this.colCnt; col++) {
+			date = this.getCellDate(row, col);
+			htmls.push(this.renderBgCellHtml(date));
+		}
+
+		return htmls.join('');
+	},
+
+
+	renderBgCellHtml: function(date) {
+		var view = this.view;
+		var classes = this.getDayClasses(date);
+
+		classes.unshift('fc-day', view.widgetContentClass);
+
+		return '<td class="' + classes.join(' ') + '"' +
+			' data-date="' + date.format('YYYY-MM-DD') + '"' + // if date has a time, won't format it
+			'></td>';
+	},
+
+
+	/* Generic
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Generates the default HTML intro for any row. User classes should override
+	renderIntroHtml: function() {
+	},
+
+
+	/* Utils
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Applies the generic "intro" and "outro" HTML to the given cells.
+	// Intro means the leftmost cell when the calendar is LTR and the rightmost cell when RTL. Vice-versa for outro.
+	bookendCells: function(trEl) {
+		var introHtml = this.renderIntroHtml();
+
+		if (introHtml) {
+			if (this.isRTL) {
+				trEl.append(introHtml);
+			}
+			else {
+				trEl.prepend(introHtml);
+			}
+		}
 	}
-	
 
-	options = $.extend(true, {},
-		defaults,
-		(options.isRTL || options.isRTL===undefined && defaults.isRTL) ? rtlDefaults : {},
-		options
-	);
-	
-	
-	this.each(function(i, _element) {
-		var element = $(_element);
-		var calendar = new Calendar(element, options, eventSources);
-		element.data('fullCalendar', calendar); // TODO: look into memory leak implications
-		calendar.render();
-	});
-	
-	
-	return this;
-	
 };
 
+;;
+
+/* A component that renders a grid of whole-days that runs horizontally. There can be multiple rows, one per week.
+----------------------------------------------------------------------------------------------------------------------*/
+
+var DayGrid = FC.DayGrid = Grid.extend(DayTableMixin, {
+
+	numbersVisible: false, // should render a row for day/week numbers? set by outside view. TODO: make internal
+	bottomCoordPadding: 0, // hack for extending the hit area for the last row of the coordinate grid
+
+	rowEls: null, // set of fake row elements
+	cellEls: null, // set of whole-day elements comprising the row's background
+	helperEls: null, // set of cell skeleton elements for rendering the mock event "helper"
+
+	rowCoordCache: null,
+	colCoordCache: null,
+
+
+	// Renders the rows and columns into the component's `this.el`, which should already be assigned.
+	// isRigid determins whether the individual rows should ignore the contents and be a constant height.
+	// Relies on the view's colCnt and rowCnt. In the future, this component should probably be self-sufficient.
+	renderDates: function(isRigid) {
+		var view = this.view;
+		var rowCnt = this.rowCnt;
+		var colCnt = this.colCnt;
+		var html = '';
+		var row;
+		var col;
+
+		for (row = 0; row < rowCnt; row++) {
+			html += this.renderDayRowHtml(row, isRigid);
+		}
+		this.el.html(html);
+
+		this.rowEls = this.el.find('.fc-row');
+		this.cellEls = this.el.find('.fc-day');
+
+		this.rowCoordCache = new CoordCache({
+			els: this.rowEls,
+			isVertical: true
+		});
+		this.colCoordCache = new CoordCache({
+			els: this.cellEls.slice(0, this.colCnt), // only the first row
+			isHorizontal: true
+		});
+
+		// trigger dayRender with each cell's element
+		for (row = 0; row < rowCnt; row++) {
+			for (col = 0; col < colCnt; col++) {
+				view.trigger(
+					'dayRender',
+					null,
+					this.getCellDate(row, col),
+					this.getCellEl(row, col)
+				);
+			}
+		}
+	},
+
+
+	unrenderDates: function() {
+		this.removeSegPopover();
+	},
+
+
+	renderBusinessHours: function() {
+		var events = this.view.calendar.getBusinessHoursEvents(true); // wholeDay=true
+		var segs = this.eventsToSegs(events);
+
+		this.renderFill('businessHours', segs, 'bgevent');
+	},
+
+
+	// Generates the HTML for a single row, which is a div that wraps a table.
+	// `row` is the row number.
+	renderDayRowHtml: function(row, isRigid) {
+		var view = this.view;
+		var classes = [ 'fc-row', 'fc-week', view.widgetContentClass ];
+
+		if (isRigid) {
+			classes.push('fc-rigid');
+		}
+
+		return '' +
+			'<div class="' + classes.join(' ') + '">' +
+				'<div class="fc-bg">' +
+					'<table>' +
+						this.renderBgTrHtml(row) +
+					'</table>' +
+				'</div>' +
+				'<div class="fc-content-skeleton">' +
+					'<table>' +
+						(this.numbersVisible ?
+							'<thead>' +
+								this.renderNumberTrHtml(row) +
+							'</thead>' :
+							''
+							) +
+					'</table>' +
+				'</div>' +
+			'</div>';
+	},
+
+
+	/* Grid Number Rendering
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	renderNumberTrHtml: function(row) {
+		return '' +
+			'<tr>' +
+				(this.isRTL ? '' : this.renderNumberIntroHtml(row)) +
+				this.renderNumberCellsHtml(row) +
+				(this.isRTL ? this.renderNumberIntroHtml(row) : '') +
+			'</tr>';
+	},
+
+
+	renderNumberIntroHtml: function(row) {
+		return this.renderIntroHtml();
+	},
+
+
+	renderNumberCellsHtml: function(row) {
+		var htmls = [];
+		var col, date;
+
+		for (col = 0; col < this.colCnt; col++) {
+			date = this.getCellDate(row, col);
+			htmls.push(this.renderNumberCellHtml(date));
+		}
+
+		return htmls.join('');
+	},
+
+
+	// Generates the HTML for the <td>s of the "number" row in the DayGrid's content skeleton.
+	// The number row will only exist if either day numbers or week numbers are turned on.
+	renderNumberCellHtml: function(date) {
+		var classes;
+
+		if (!this.view.dayNumbersVisible) { // if there are week numbers but not day numbers
+			return '<td/>'; //  will create an empty space above events :(
+		}
+
+		classes = this.getDayClasses(date);
+		classes.unshift('fc-day-number');
+
+		return '' +
+			'<td class="' + classes.join(' ') + '" data-date="' + date.format() + '">' +
+				date.date() +
+			'</td>';
+	},
+
+
+	/* Options
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Computes a default event time formatting string if `timeFormat` is not explicitly defined
+	computeEventTimeFormat: function() {
+		return this.view.opt('extraSmallTimeFormat'); // like "6p" or "6:30p"
+	},
+
+
+	// Computes a default `displayEventEnd` value if one is not expliclty defined
+	computeDisplayEventEnd: function() {
+		return this.colCnt == 1; // we'll likely have space if there's only one day
+	},
+
+
+	/* Dates
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	rangeUpdated: function() {
+		this.updateDayTable();
+	},
+
+
+	// Slices up a date range by row into an array of segments
+	rangeToSegs: function(range) {
+		var segs = this.sliceRangeByRow(range);
+		var i, seg;
+
+		for (i = 0; i < segs.length; i++) {
+			seg = segs[i];
+			if (this.isRTL) {
+				seg.leftCol = this.daysPerRow - 1 - seg.lastRowDayIndex;
+				seg.rightCol = this.daysPerRow - 1 - seg.firstRowDayIndex;
+			}
+			else {
+				seg.leftCol = seg.firstRowDayIndex;
+				seg.rightCol = seg.lastRowDayIndex;
+			}
+		}
+
+		return segs;
+	},
+
+
+	/* Hit System
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	prepareHits: function() {
+		this.colCoordCache.build();
+		this.rowCoordCache.build();
+		this.rowCoordCache.bottoms[this.rowCnt - 1] += this.bottomCoordPadding; // hack
+	},
+
+
+	releaseHits: function() {
+		this.colCoordCache.clear();
+		this.rowCoordCache.clear();
+	},
+
+
+	queryHit: function(leftOffset, topOffset) {
+		var col = this.colCoordCache.getHorizontalIndex(leftOffset);
+		var row = this.rowCoordCache.getVerticalIndex(topOffset);
+
+		if (row != null && col != null) {
+			return this.getCellHit(row, col);
+		}
+	},
+
+
+	getHitSpan: function(hit) {
+		return this.getCellRange(hit.row, hit.col);
+	},
+
+
+	getHitEl: function(hit) {
+		return this.getCellEl(hit.row, hit.col);
+	},
+
+
+	/* Cell System
+	------------------------------------------------------------------------------------------------------------------*/
+	// FYI: the first column is the leftmost column, regardless of date
+
+
+	getCellHit: function(row, col) {
+		return {
+			row: row,
+			col: col,
+			component: this, // needed unfortunately :(
+			left: this.colCoordCache.getLeftOffset(col),
+			right: this.colCoordCache.getRightOffset(col),
+			top: this.rowCoordCache.getTopOffset(row),
+			bottom: this.rowCoordCache.getBottomOffset(row)
+		};
+	},
+
+
+	getCellEl: function(row, col) {
+		return this.cellEls.eq(row * this.colCnt + col);
+	},
+
+
+	/* Event Drag Visualization
+	------------------------------------------------------------------------------------------------------------------*/
+	// TODO: move to DayGrid.event, similar to what we did with Grid's drag methods
+
+
+	// Renders a visual indication of an event or external element being dragged.
+	// The dropLocation's end can be null. seg can be null. See Grid::renderDrag for more info.
+	renderDrag: function(dropLocation, seg) {
+
+		// always render a highlight underneath
+		this.renderHighlight(this.eventRangeToSegs(dropLocation));
+
+		// if a segment from the same calendar but another component is being dragged, render a helper event
+		if (seg && !seg.el.closest(this.el).length) {
+
+			this.renderRangeHelper(dropLocation, seg);
+			this.applyDragOpacity(this.helperEls);
+
+			return true; // a helper has been rendered
+		}
+	},
+
+
+	// Unrenders any visual indication of a hovering event
+	unrenderDrag: function() {
+		this.unrenderHighlight();
+		this.unrenderHelper();
+	},
+
+
+	/* Event Resize Visualization
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Renders a visual indication of an event being resized
+	renderEventResize: function(range, seg) {
+		this.renderHighlight(this.eventRangeToSegs(range));
+		this.renderRangeHelper(range, seg);
+	},
+
+
+	// Unrenders a visual indication of an event being resized
+	unrenderEventResize: function() {
+		this.unrenderHighlight();
+		this.unrenderHelper();
+	},
+
+
+	/* Event Helper
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Renders a mock "helper" event. `sourceSeg` is the associated internal segment object. It can be null.
+	renderHelper: function(event, sourceSeg) {
+		var helperNodes = [];
+		var segs = this.eventsToSegs([ event ]);
+		var rowStructs;
+
+		segs = this.renderFgSegEls(segs); // assigns each seg's el and returns a subset of segs that were rendered
+		rowStructs = this.renderSegRows(segs);
+
+		// inject each new event skeleton into each associated row
+		this.rowEls.each(function(row, rowNode) {
+			var rowEl = $(rowNode); // the .fc-row
+			var skeletonEl = $('<div class="fc-helper-skeleton"><table/></div>'); // will be absolutely positioned
+			var skeletonTop;
+
+			// If there is an original segment, match the top position. Otherwise, put it at the row's top level
+			if (sourceSeg && sourceSeg.row === row) {
+				skeletonTop = sourceSeg.el.position().top;
+			}
+			else {
+				skeletonTop = rowEl.find('.fc-content-skeleton tbody').position().top;
+			}
+
+			skeletonEl.css('top', skeletonTop)
+				.find('table')
+					.append(rowStructs[row].tbodyEl);
+
+			rowEl.append(skeletonEl);
+			helperNodes.push(skeletonEl[0]);
+		});
+
+		this.helperEls = $(helperNodes); // array -> jQuery set
+	},
+
+
+	// Unrenders any visual indication of a mock helper event
+	unrenderHelper: function() {
+		if (this.helperEls) {
+			this.helperEls.remove();
+			this.helperEls = null;
+		}
+	},
+
+
+	/* Fill System (highlight, background events, business hours)
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	fillSegTag: 'td', // override the default tag name
+
+
+	// Renders a set of rectangles over the given segments of days.
+	// Only returns segments that successfully rendered.
+	renderFill: function(type, segs, className) {
+		var nodes = [];
+		var i, seg;
+		var skeletonEl;
+
+		segs = this.renderFillSegEls(type, segs); // assignes `.el` to each seg. returns successfully rendered segs
+
+		for (i = 0; i < segs.length; i++) {
+			seg = segs[i];
+			skeletonEl = this.renderFillRow(type, seg, className);
+			this.rowEls.eq(seg.row).append(skeletonEl);
+			nodes.push(skeletonEl[0]);
+		}
+
+		this.elsByFill[type] = $(nodes);
+
+		return segs;
+	},
+
+
+	// Generates the HTML needed for one row of a fill. Requires the seg's el to be rendered.
+	renderFillRow: function(type, seg, className) {
+		var colCnt = this.colCnt;
+		var startCol = seg.leftCol;
+		var endCol = seg.rightCol + 1;
+		var skeletonEl;
+		var trEl;
+
+		className = className || type.toLowerCase();
+
+		skeletonEl = $(
+			'<div class="fc-' + className + '-skeleton">' +
+				'<table><tr/></table>' +
+			'</div>'
+		);
+		trEl = skeletonEl.find('tr');
+
+		if (startCol > 0) {
+			trEl.append('<td colspan="' + startCol + '"/>');
+		}
+
+		trEl.append(
+			seg.el.attr('colspan', endCol - startCol)
+		);
+
+		if (endCol < colCnt) {
+			trEl.append('<td colspan="' + (colCnt - endCol) + '"/>');
+		}
+
+		this.bookendCells(trEl);
+
+		return skeletonEl;
+	}
+
+});
+
+;;
+
+/* Event-rendering methods for the DayGrid class
+----------------------------------------------------------------------------------------------------------------------*/
+
+DayGrid.mixin({
+
+	rowStructs: null, // an array of objects, each holding information about a row's foreground event-rendering
+
+
+	// Unrenders all events currently rendered on the grid
+	unrenderEvents: function() {
+		this.removeSegPopover(); // removes the "more.." events popover
+		Grid.prototype.unrenderEvents.apply(this, arguments); // calls the super-method
+	},
+
+
+	// Retrieves all rendered segment objects currently rendered on the grid
+	getEventSegs: function() {
+		return Grid.prototype.getEventSegs.call(this) // get the segments from the super-method
+			.concat(this.popoverSegs || []); // append the segments from the "more..." popover
+	},
+
+
+	// Renders the given background event segments onto the grid
+	renderBgSegs: function(segs) {
+
+		// don't render timed background events
+		var allDaySegs = $.grep(segs, function(seg) {
+			return seg.event.allDay;
+		});
+
+		return Grid.prototype.renderBgSegs.call(this, allDaySegs); // call the super-method
+	},
+
+
+	// Renders the given foreground event segments onto the grid
+	renderFgSegs: function(segs) {
+		var rowStructs;
+
+		// render an `.el` on each seg
+		// returns a subset of the segs. segs that were actually rendered
+		segs = this.renderFgSegEls(segs);
+
+		rowStructs = this.rowStructs = this.renderSegRows(segs);
+
+		// append to each row's content skeleton
+		this.rowEls.each(function(i, rowNode) {
+			$(rowNode).find('.fc-content-skeleton > table').append(
+				rowStructs[i].tbodyEl
+			);
+		});
+
+		return segs; // return only the segs that were actually rendered
+	},
+
+
+	// Unrenders all currently rendered foreground event segments
+	unrenderFgSegs: function() {
+		var rowStructs = this.rowStructs || [];
+		var rowStruct;
+
+		while ((rowStruct = rowStructs.pop())) {
+			rowStruct.tbodyEl.remove();
+		}
+
+		this.rowStructs = null;
+	},
+
+
+	// Uses the given events array to generate <tbody> elements that should be appended to each row's content skeleton.
+	// Returns an array of rowStruct objects (see the bottom of `renderSegRow`).
+	// PRECONDITION: each segment shoud already have a rendered and assigned `.el`
+	renderSegRows: function(segs) {
+		var rowStructs = [];
+		var segRows;
+		var row;
+
+		segRows = this.groupSegRows(segs); // group into nested arrays
+
+		// iterate each row of segment groupings
+		for (row = 0; row < segRows.length; row++) {
+			rowStructs.push(
+				this.renderSegRow(row, segRows[row])
+			);
+		}
+
+		return rowStructs;
+	},
+
+
+	// Builds the HTML to be used for the default element for an individual segment
+	fgSegHtml: function(seg, disableResizing) {
+		var view = this.view;
+		var event = seg.event;
+		var isDraggable = view.isEventDraggable(event);
+		var isResizableFromStart = !disableResizing && event.allDay &&
+			seg.isStart && view.isEventResizableFromStart(event);
+		var isResizableFromEnd = !disableResizing && event.allDay &&
+			seg.isEnd && view.isEventResizableFromEnd(event);
+		var classes = this.getSegClasses(seg, isDraggable, isResizableFromStart || isResizableFromEnd);
+		var skinCss = cssToStr(this.getEventSkinCss(event));
+		var timeHtml = '';
+		var timeText;
+		var titleHtml;
+
+		classes.unshift('fc-day-grid-event', 'fc-h-event');
+
+		// Only display a timed events time if it is the starting segment
+		if (seg.isStart) {
+			timeText = this.getEventTimeText(event);
+			if (timeText) {
+				timeHtml = '<span class="fc-time">' + htmlEscape(timeText) + '</span>';
+			}
+		}
+
+		titleHtml =
+			'<span class="fc-title">' +
+				(htmlEscape(event.title || '') || '&nbsp;') + // we always want one line of height
+			'</span>';
+		
+		return '<a class="' + classes.join(' ') + '"' +
+				(event.url ?
+					' href="' + htmlEscape(event.url) + '"' :
+					''
+					) +
+				(skinCss ?
+					' style="' + skinCss + '"' :
+					''
+					) +
+			'>' +
+				'<div class="fc-content">' +
+					(this.isRTL ?
+						titleHtml + ' ' + timeHtml : // put a natural space in between
+						timeHtml + ' ' + titleHtml   //
+						) +
+				'</div>' +
+				(isResizableFromStart ?
+					'<div class="fc-resizer fc-start-resizer" />' :
+					''
+					) +
+				(isResizableFromEnd ?
+					'<div class="fc-resizer fc-end-resizer" />' :
+					''
+					) +
+			'</a>';
+	},
+
+
+	// Given a row # and an array of segments all in the same row, render a <tbody> element, a skeleton that contains
+	// the segments. Returns object with a bunch of internal data about how the render was calculated.
+	// NOTE: modifies rowSegs
+	renderSegRow: function(row, rowSegs) {
+		var colCnt = this.colCnt;
+		var segLevels = this.buildSegLevels(rowSegs); // group into sub-arrays of levels
+		var levelCnt = Math.max(1, segLevels.length); // ensure at least one level
+		var tbody = $('<tbody/>');
+		var segMatrix = []; // lookup for which segments are rendered into which level+col cells
+		var cellMatrix = []; // lookup for all <td> elements of the level+col matrix
+		var loneCellMatrix = []; // lookup for <td> elements that only take up a single column
+		var i, levelSegs;
+		var col;
+		var tr;
+		var j, seg;
+		var td;
+
+		// populates empty cells from the current column (`col`) to `endCol`
+		function emptyCellsUntil(endCol) {
+			while (col < endCol) {
+				// try to grab a cell from the level above and extend its rowspan. otherwise, create a fresh cell
+				td = (loneCellMatrix[i - 1] || [])[col];
+				if (td) {
+					td.attr(
+						'rowspan',
+						parseInt(td.attr('rowspan') || 1, 10) + 1
+					);
+				}
+				else {
+					td = $('<td/>');
+					tr.append(td);
+				}
+				cellMatrix[i][col] = td;
+				loneCellMatrix[i][col] = td;
+				col++;
+			}
+		}
+
+		for (i = 0; i < levelCnt; i++) { // iterate through all levels
+			levelSegs = segLevels[i];
+			col = 0;
+			tr = $('<tr/>');
+
+			segMatrix.push([]);
+			cellMatrix.push([]);
+			loneCellMatrix.push([]);
+
+			// levelCnt might be 1 even though there are no actual levels. protect against this.
+			// this single empty row is useful for styling.
+			if (levelSegs) {
+				for (j = 0; j < levelSegs.length; j++) { // iterate through segments in level
+					seg = levelSegs[j];
+
+					emptyCellsUntil(seg.leftCol);
+
+					// create a container that occupies or more columns. append the event element.
+					td = $('<td class="fc-event-container"/>').append(seg.el);
+					if (seg.leftCol != seg.rightCol) {
+						td.attr('colspan', seg.rightCol - seg.leftCol + 1);
+					}
+					else { // a single-column segment
+						loneCellMatrix[i][col] = td;
+					}
+
+					while (col <= seg.rightCol) {
+						cellMatrix[i][col] = td;
+						segMatrix[i][col] = seg;
+						col++;
+					}
+
+					tr.append(td);
+				}
+			}
+
+			emptyCellsUntil(colCnt); // finish off the row
+			this.bookendCells(tr);
+			tbody.append(tr);
+		}
+
+		return { // a "rowStruct"
+			row: row, // the row number
+			tbodyEl: tbody,
+			cellMatrix: cellMatrix,
+			segMatrix: segMatrix,
+			segLevels: segLevels,
+			segs: rowSegs
+		};
+	},
+
+
+	// Stacks a flat array of segments, which are all assumed to be in the same row, into subarrays of vertical levels.
+	// NOTE: modifies segs
+	buildSegLevels: function(segs) {
+		var levels = [];
+		var i, seg;
+		var j;
+
+		// Give preference to elements with certain criteria, so they have
+		// a chance to be closer to the top.
+		this.sortSegs(segs);
+		
+		for (i = 0; i < segs.length; i++) {
+			seg = segs[i];
+
+			// loop through levels, starting with the topmost, until the segment doesn't collide with other segments
+			for (j = 0; j < levels.length; j++) {
+				if (!isDaySegCollision(seg, levels[j])) {
+					break;
+				}
+			}
+			// `j` now holds the desired subrow index
+			seg.level = j;
+
+			// create new level array if needed and append segment
+			(levels[j] || (levels[j] = [])).push(seg);
+		}
+
+		// order segments left-to-right. very important if calendar is RTL
+		for (j = 0; j < levels.length; j++) {
+			levels[j].sort(compareDaySegCols);
+		}
+
+		return levels;
+	},
+
+
+	// Given a flat array of segments, return an array of sub-arrays, grouped by each segment's row
+	groupSegRows: function(segs) {
+		var segRows = [];
+		var i;
+
+		for (i = 0; i < this.rowCnt; i++) {
+			segRows.push([]);
+		}
+
+		for (i = 0; i < segs.length; i++) {
+			segRows[segs[i].row].push(segs[i]);
+		}
+
+		return segRows;
+	}
+
+});
+
+
+// Computes whether two segments' columns collide. They are assumed to be in the same row.
+function isDaySegCollision(seg, otherSegs) {
+	var i, otherSeg;
+
+	for (i = 0; i < otherSegs.length; i++) {
+		otherSeg = otherSegs[i];
+
+		if (
+			otherSeg.leftCol <= seg.rightCol &&
+			otherSeg.rightCol >= seg.leftCol
+		) {
+			return true;
+		}
+	}
+
+	return false;
+}
+
+
+// A cmp function for determining the leftmost event
+function compareDaySegCols(a, b) {
+	return a.leftCol - b.leftCol;
+}
+
+;;
+
+/* Methods relate to limiting the number events for a given day on a DayGrid
+----------------------------------------------------------------------------------------------------------------------*/
+// NOTE: all the segs being passed around in here are foreground segs
+
+DayGrid.mixin({
+
+	segPopover: null, // the Popover that holds events that can't fit in a cell. null when not visible
+	popoverSegs: null, // an array of segment objects that the segPopover holds. null when not visible
+
+
+	removeSegPopover: function() {
+		if (this.segPopover) {
+			this.segPopover.hide(); // in handler, will call segPopover's removeElement
+		}
+	},
+
+
+	// Limits the number of "levels" (vertically stacking layers of events) for each row of the grid.
+	// `levelLimit` can be false (don't limit), a number, or true (should be computed).
+	limitRows: function(levelLimit) {
+		var rowStructs = this.rowStructs || [];
+		var row; // row #
+		var rowLevelLimit;
+
+		for (row = 0; row < rowStructs.length; row++) {
+			this.unlimitRow(row);
+
+			if (!levelLimit) {
+				rowLevelLimit = false;
+			}
+			else if (typeof levelLimit === 'number') {
+				rowLevelLimit = levelLimit;
+			}
+			else {
+				rowLevelLimit = this.computeRowLevelLimit(row);
+			}
+
+			if (rowLevelLimit !== false) {
+				this.limitRow(row, rowLevelLimit);
+			}
+		}
+	},
+
+
+	// Computes the number of levels a row will accomodate without going outside its bounds.
+	// Assumes the row is "rigid" (maintains a constant height regardless of what is inside).
+	// `row` is the row number.
+	computeRowLevelLimit: function(row) {
+		var rowEl = this.rowEls.eq(row); // the containing "fake" row div
+		var rowHeight = rowEl.height(); // TODO: cache somehow?
+		var trEls = this.rowStructs[row].tbodyEl.children();
+		var i, trEl;
+		var trHeight;
+
+		function iterInnerHeights(i, childNode) {
+			trHeight = Math.max(trHeight, $(childNode).outerHeight());
+		}
+
+		// Reveal one level <tr> at a time and stop when we find one out of bounds
+		for (i = 0; i < trEls.length; i++) {
+			trEl = trEls.eq(i).removeClass('fc-limited'); // reset to original state (reveal)
+
+			// with rowspans>1 and IE8, trEl.outerHeight() would return the height of the largest cell,
+			// so instead, find the tallest inner content element.
+			trHeight = 0;
+			trEl.find('> td > :first-child').each(iterInnerHeights);
+
+			if (trEl.position().top + trHeight > rowHeight) {
+				return i;
+			}
+		}
+
+		return false; // should not limit at all
+	},
+
+
+	// Limits the given grid row to the maximum number of levels and injects "more" links if necessary.
+	// `row` is the row number.
+	// `levelLimit` is a number for the maximum (inclusive) number of levels allowed.
+	limitRow: function(row, levelLimit) {
+		var _this = this;
+		var rowStruct = this.rowStructs[row];
+		var moreNodes = []; // array of "more" <a> links and <td> DOM nodes
+		var col = 0; // col #, left-to-right (not chronologically)
+		var levelSegs; // array of segment objects in the last allowable level, ordered left-to-right
+		var cellMatrix; // a matrix (by level, then column) of all <td> jQuery elements in the row
+		var limitedNodes; // array of temporarily hidden level <tr> and segment <td> DOM nodes
+		var i, seg;
+		var segsBelow; // array of segment objects below `seg` in the current `col`
+		var totalSegsBelow; // total number of segments below `seg` in any of the columns `seg` occupies
+		var colSegsBelow; // array of segment arrays, below seg, one for each column (offset from segs's first column)
+		var td, rowspan;
+		var segMoreNodes; // array of "more" <td> cells that will stand-in for the current seg's cell
+		var j;
+		var moreTd, moreWrap, moreLink;
+
+		// Iterates through empty level cells and places "more" links inside if need be
+		function emptyCellsUntil(endCol) { // goes from current `col` to `endCol`
+			while (col < endCol) {
+				segsBelow = _this.getCellSegs(row, col, levelLimit);
+				if (segsBelow.length) {
+					td = cellMatrix[levelLimit - 1][col];
+					moreLink = _this.renderMoreLink(row, col, segsBelow);
+					moreWrap = $('<div/>').append(moreLink);
+					td.append(moreWrap);
+					moreNodes.push(moreWrap[0]);
+				}
+				col++;
+			}
+		}
+
+		if (levelLimit && levelLimit < rowStruct.segLevels.length) { // is it actually over the limit?
+			levelSegs = rowStruct.segLevels[levelLimit - 1];
+			cellMatrix = rowStruct.cellMatrix;
+
+			limitedNodes = rowStruct.tbodyEl.children().slice(levelLimit) // get level <tr> elements past the limit
+				.addClass('fc-limited').get(); // hide elements and get a simple DOM-nodes array
+
+			// iterate though segments in the last allowable level
+			for (i = 0; i < levelSegs.length; i++) {
+				seg = levelSegs[i];
+				emptyCellsUntil(seg.leftCol); // process empty cells before the segment
+
+				// determine *all* segments below `seg` that occupy the same columns
+				colSegsBelow = [];
+				totalSegsBelow = 0;
+				while (col <= seg.rightCol) {
+					segsBelow = this.getCellSegs(row, col, levelLimit);
+					colSegsBelow.push(segsBelow);
+					totalSegsBelow += segsBelow.length;
+					col++;
+				}
+
+				if (totalSegsBelow) { // do we need to replace this segment with one or many "more" links?
+					td = cellMatrix[levelLimit - 1][seg.leftCol]; // the segment's parent cell
+					rowspan = td.attr('rowspan') || 1;
+					segMoreNodes = [];
+
+					// make a replacement <td> for each column the segment occupies. will be one for each colspan
+					for (j = 0; j < colSegsBelow.length; j++) {
+						moreTd = $('<td class="fc-more-cell"/>').attr('rowspan', rowspan);
+						segsBelow = colSegsBelow[j];
+						moreLink = this.renderMoreLink(
+							row,
+							seg.leftCol + j,
+							[ seg ].concat(segsBelow) // count seg as hidden too
+						);
+						moreWrap = $('<div/>').append(moreLink);
+						moreTd.append(moreWrap);
+						segMoreNodes.push(moreTd[0]);
+						moreNodes.push(moreTd[0]);
+					}
+
+					td.addClass('fc-limited').after($(segMoreNodes)); // hide original <td> and inject replacements
+					limitedNodes.push(td[0]);
+				}
+			}
+
+			emptyCellsUntil(this.colCnt); // finish off the level
+			rowStruct.moreEls = $(moreNodes); // for easy undoing later
+			rowStruct.limitedEls = $(limitedNodes); // for easy undoing later
+		}
+	},
+
+
+	// Reveals all levels and removes all "more"-related elements for a grid's row.
+	// `row` is a row number.
+	unlimitRow: function(row) {
+		var rowStruct = this.rowStructs[row];
+
+		if (rowStruct.moreEls) {
+			rowStruct.moreEls.remove();
+			rowStruct.moreEls = null;
+		}
+
+		if (rowStruct.limitedEls) {
+			rowStruct.limitedEls.removeClass('fc-limited');
+			rowStruct.limitedEls = null;
+		}
+	},
+
+
+	// Renders an <a> element that represents hidden event element for a cell.
+	// Responsible for attaching click handler as well.
+	renderMoreLink: function(row, col, hiddenSegs) {
+		var _this = this;
+		var view = this.view;
+
+		return $('<a class="fc-more"/>')
+			.text(
+				this.getMoreLinkText(hiddenSegs.length)
+			)
+			.on('click', function(ev) {
+				var clickOption = view.opt('eventLimitClick');
+				var date = _this.getCellDate(row, col);
+				var moreEl = $(this);
+				var dayEl = _this.getCellEl(row, col);
+				var allSegs = _this.getCellSegs(row, col);
+
+				// rescope the segments to be within the cell's date
+				var reslicedAllSegs = _this.resliceDaySegs(allSegs, date);
+				var reslicedHiddenSegs = _this.resliceDaySegs(hiddenSegs, date);
+
+				if (typeof clickOption === 'function') {
+					// the returned value can be an atomic option
+					clickOption = view.trigger('eventLimitClick', null, {
+						date: date,
+						dayEl: dayEl,
+						moreEl: moreEl,
+						segs: reslicedAllSegs,
+						hiddenSegs: reslicedHiddenSegs
+					}, ev);
+				}
+
+				if (clickOption === 'popover') {
+					_this.showSegPopover(row, col, moreEl, reslicedAllSegs);
+				}
+				else if (typeof clickOption === 'string') { // a view name
+					view.calendar.zoomTo(date, clickOption);
+				}
+			});
+	},
+
+
+	// Reveals the popover that displays all events within a cell
+	showSegPopover: function(row, col, moreLink, segs) {
+		var _this = this;
+		var view = this.view;
+		var moreWrap = moreLink.parent(); // the <div> wrapper around the <a>
+		var topEl; // the element we want to match the top coordinate of
+		var options;
+
+		if (this.rowCnt == 1) {
+			topEl = view.el; // will cause the popover to cover any sort of header
+		}
+		else {
+			topEl = this.rowEls.eq(row); // will align with top of row
+		}
+
+		options = {
+			className: 'fc-more-popover',
+			content: this.renderSegPopoverContent(row, col, segs),
+			parentEl: this.el,
+			top: topEl.offset().top,
+			autoHide: true, // when the user clicks elsewhere, hide the popover
+			viewportConstrain: view.opt('popoverViewportConstrain'),
+			hide: function() {
+				// kill everything when the popover is hidden
+				_this.segPopover.removeElement();
+				_this.segPopover = null;
+				_this.popoverSegs = null;
+			}
+		};
+
+		// Determine horizontal coordinate.
+		// We use the moreWrap instead of the <td> to avoid border confusion.
+		if (this.isRTL) {
+			options.right = moreWrap.offset().left + moreWrap.outerWidth() + 1; // +1 to be over cell border
+		}
+		else {
+			options.left = moreWrap.offset().left - 1; // -1 to be over cell border
+		}
+
+		this.segPopover = new Popover(options);
+		this.segPopover.show();
+	},
+
+
+	// Builds the inner DOM contents of the segment popover
+	renderSegPopoverContent: function(row, col, segs) {
+		var view = this.view;
+		var isTheme = view.opt('theme');
+		var title = this.getCellDate(row, col).format(view.opt('dayPopoverFormat'));
+		var content = $(
+			'<div class="fc-header ' + view.widgetHeaderClass + '">' +
+				'<span class="fc-close ' +
+					(isTheme ? 'ui-icon ui-icon-closethick' : 'fc-icon fc-icon-x') +
+				'"></span>' +
+				'<span class="fc-title">' +
+					htmlEscape(title) +
+				'</span>' +
+				'<div class="fc-clear"/>' +
+			'</div>' +
+			'<div class="fc-body ' + view.widgetContentClass + '">' +
+				'<div class="fc-event-container"></div>' +
+			'</div>'
+		);
+		var segContainer = content.find('.fc-event-container');
+		var i;
+
+		// render each seg's `el` and only return the visible segs
+		segs = this.renderFgSegEls(segs, true); // disableResizing=true
+		this.popoverSegs = segs;
+
+		for (i = 0; i < segs.length; i++) {
+
+			// because segments in the popover are not part of a grid coordinate system, provide a hint to any
+			// grids that want to do drag-n-drop about which cell it came from
+			this.prepareHits();
+			segs[i].hit = this.getCellHit(row, col);
+			this.releaseHits();
+
+			segContainer.append(segs[i].el);
+		}
+
+		return content;
+	},
+
+
+	// Given the events within an array of segment objects, reslice them to be in a single day
+	resliceDaySegs: function(segs, dayDate) {
+
+		// build an array of the original events
+		var events = $.map(segs, function(seg) {
+			return seg.event;
+		});
+
+		var dayStart = dayDate.clone().stripTime();
+		var dayEnd = dayStart.clone().add(1, 'days');
+		var dayRange = { start: dayStart, end: dayEnd };
+
+		// slice the events with a custom slicing function
+		segs = this.eventsToSegs(
+			events,
+			function(range) {
+				var seg = intersectionToSeg(range, dayRange); // undefind if no intersection
+				return seg ? [ seg ] : []; // must return an array of segments
+			}
+		);
+
+		// force an order because eventsToSegs doesn't guarantee one
+		this.sortSegs(segs);
+
+		return segs;
+	},
+
+
+	// Generates the text that should be inside a "more" link, given the number of events it represents
+	getMoreLinkText: function(num) {
+		var opt = this.view.opt('eventLimitText');
+
+		if (typeof opt === 'function') {
+			return opt(num);
+		}
+		else {
+			return '+' + num + ' ' + opt;
+		}
+	},
+
+
+	// Returns segments within a given cell.
+	// If `startLevel` is specified, returns only events including and below that level. Otherwise returns all segs.
+	getCellSegs: function(row, col, startLevel) {
+		var segMatrix = this.rowStructs[row].segMatrix;
+		var level = startLevel || 0;
+		var segs = [];
+		var seg;
+
+		while (level < segMatrix.length) {
+			seg = segMatrix[level][col];
+			if (seg) {
+				segs.push(seg);
+			}
+			level++;
+		}
+
+		return segs;
+	}
+
+});
+
+;;
+
+/* A component that renders one or more columns of vertical time slots
+----------------------------------------------------------------------------------------------------------------------*/
+// We mixin DayTable, even though there is only a single row of days
+
+var TimeGrid = FC.TimeGrid = Grid.extend(DayTableMixin, {
+
+	slotDuration: null, // duration of a "slot", a distinct time segment on given day, visualized by lines
+	snapDuration: null, // granularity of time for dragging and selecting
+	snapsPerSlot: null,
+	minTime: null, // Duration object that denotes the first visible time of any given day
+	maxTime: null, // Duration object that denotes the exclusive visible end time of any given day
+	labelFormat: null, // formatting string for times running along vertical axis
+	labelInterval: null, // duration of how often a label should be displayed for a slot
+
+	colEls: null, // cells elements in the day-row background
+	slatEls: null, // elements running horizontally across all columns
+	helperEl: null, // cell skeleton element for rendering the mock event "helper"
+
+	colCoordCache: null,
+	slatCoordCache: null,
+
+	businessHourSegs: null,
+
+
+	constructor: function() {
+		Grid.apply(this, arguments); // call the super-constructor
+
+		this.processOptions();
+	},
+
+
+	// Renders the time grid into `this.el`, which should already be assigned.
+	// Relies on the view's colCnt. In the future, this component should probably be self-sufficient.
+	renderDates: function() {
+		this.el.html(this.renderHtml());
+		this.colEls = this.el.find('.fc-day');
+		this.slatEls = this.el.find('.fc-slats tr');
+
+		this.colCoordCache = new CoordCache({
+			els: this.colEls,
+			isHorizontal: true
+		});
+		this.slatCoordCache = new CoordCache({
+			els: this.slatEls,
+			isVertical: true
+		});
+	},
+
+
+	renderBusinessHours: function() {
+		var events = this.view.calendar.getBusinessHoursEvents();
+		this.businessHourSegs = this.renderFill('businessHours', this.eventsToSegs(events), 'bgevent');
+	},
+
+
+	// Renders the basic HTML skeleton for the grid
+	renderHtml: function() {
+		return '' +
+			'<div class="fc-bg">' +
+				'<table>' +
+					this.renderBgTrHtml(0) + // row=0
+				'</table>' +
+			'</div>' +
+			'<div class="fc-slats">' +
+				'<table>' +
+					this.renderSlatRowHtml() +
+				'</table>' +
+			'</div>';
+	},
+
+
+	// Generates the HTML for the horizontal "slats" that run width-wise. Has a time axis on a side. Depends on RTL.
+	renderSlatRowHtml: function() {
+		var view = this.view;
+		var isRTL = this.isRTL;
+		var html = '';
+		var slotTime = moment.duration(+this.minTime); // wish there was .clone() for durations
+		var slotDate; // will be on the view's first day, but we only care about its time
+		var isLabeled;
+		var axisHtml;
+
+		// Calculate the time for each slot
+		while (slotTime < this.maxTime) {
+			slotDate = this.start.clone().time(slotTime); // after .time() will be in UTC. but that's good, avoids DST issues
+			isLabeled = isInt(divideDurationByDuration(slotTime, this.labelInterval));
+
+			axisHtml =
+				'<td class="fc-axis fc-time ' + view.widgetContentClass + '" ' + view.axisStyleAttr() + '>' +
+					(isLabeled ?
+						'<span>' + // for matchCellWidths
+							htmlEscape(slotDate.format(this.labelFormat)) +
+						'</span>' :
+						''
+						) +
+				'</td>';
+
+			html +=
+				'<tr ' + (isLabeled ? '' : 'class="fc-minor"') + '>' +
+					(!isRTL ? axisHtml : '') +
+					'<td class="' + view.widgetContentClass + '"/>' +
+					(isRTL ? axisHtml : '') +
+				"</tr>";
+
+			slotTime.add(this.slotDuration);
+		}
+
+		return html;
+	},
+
+
+	/* Options
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Parses various options into properties of this object
+	processOptions: function() {
+		var view = this.view;
+		var slotDuration = view.opt('slotDuration');
+		var snapDuration = view.opt('snapDuration');
+		var input;
+
+		slotDuration = moment.duration(slotDuration);
+		snapDuration = snapDuration ? moment.duration(snapDuration) : slotDuration;
+
+		this.slotDuration = slotDuration;
+		this.snapDuration = snapDuration;
+		this.snapsPerSlot = slotDuration / snapDuration; // TODO: ensure an integer multiple?
+
+		this.minResizeDuration = snapDuration; // hack
+
+		this.minTime = moment.duration(view.opt('minTime'));
+		this.maxTime = moment.duration(view.opt('maxTime'));
+
+		// might be an array value (for TimelineView).
+		// if so, getting the most granular entry (the last one probably).
+		input = view.opt('slotLabelFormat');
+		if ($.isArray(input)) {
+			input = input[input.length - 1];
+		}
+
+		this.labelFormat =
+			input ||
+			view.opt('axisFormat') || // deprecated
+			view.opt('smallTimeFormat'); // the computed default
+
+		input = view.opt('slotLabelInterval');
+		this.labelInterval = input ?
+			moment.duration(input) :
+			this.computeLabelInterval(slotDuration);
+	},
+
+
+	// Computes an automatic value for slotLabelInterval
+	computeLabelInterval: function(slotDuration) {
+		var i;
+		var labelInterval;
+		var slotsPerLabel;
+
+		// find the smallest stock label interval that results in more than one slots-per-label
+		for (i = AGENDA_STOCK_SUB_DURATIONS.length - 1; i >= 0; i--) {
+			labelInterval = moment.duration(AGENDA_STOCK_SUB_DURATIONS[i]);
+			slotsPerLabel = divideDurationByDuration(labelInterval, slotDuration);
+			if (isInt(slotsPerLabel) && slotsPerLabel > 1) {
+				return labelInterval;
+			}
+		}
+
+		return moment.duration(slotDuration); // fall back. clone
+	},
+
+
+	// Computes a default event time formatting string if `timeFormat` is not explicitly defined
+	computeEventTimeFormat: function() {
+		return this.view.opt('noMeridiemTimeFormat'); // like "6:30" (no AM/PM)
+	},
+
+
+	// Computes a default `displayEventEnd` value if one is not expliclty defined
+	computeDisplayEventEnd: function() {
+		return true;
+	},
+
+
+	/* Hit System
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	prepareHits: function() {
+		this.colCoordCache.build();
+		this.slatCoordCache.build();
+	},
+
+
+	releaseHits: function() {
+		this.colCoordCache.clear();
+		// NOTE: don't clear slatCoordCache because we rely on it for computeTimeTop
+	},
+
+
+	queryHit: function(leftOffset, topOffset) {
+		var snapsPerSlot = this.snapsPerSlot;
+		var colCoordCache = this.colCoordCache;
+		var slatCoordCache = this.slatCoordCache;
+		var colIndex = colCoordCache.getHorizontalIndex(leftOffset);
+		var slatIndex = slatCoordCache.getVerticalIndex(topOffset);
+
+		if (colIndex != null && slatIndex != null) {
+			var slatTop = slatCoordCache.getTopOffset(slatIndex);
+			var slatHeight = slatCoordCache.getHeight(slatIndex);
+			var partial = (topOffset - slatTop) / slatHeight; // floating point number between 0 and 1
+			var localSnapIndex = Math.floor(partial * snapsPerSlot); // the snap # relative to start of slat
+			var snapIndex = slatIndex * snapsPerSlot + localSnapIndex;
+			var snapTop = slatTop + (localSnapIndex / snapsPerSlot) * slatHeight;
+			var snapBottom = slatTop + ((localSnapIndex + 1) / snapsPerSlot) * slatHeight;
+
+			return {
+				col: colIndex,
+				snap: snapIndex,
+				component: this, // needed unfortunately :(
+				left: colCoordCache.getLeftOffset(colIndex),
+				right: colCoordCache.getRightOffset(colIndex),
+				top: snapTop,
+				bottom: snapBottom
+			};
+		}
+	},
+
+
+	getHitSpan: function(hit) {
+		var date = this.getCellDate(0, hit.col); // row=0
+		var time = this.computeSnapTime(hit.snap); // pass in the snap-index
+		var start = this.view.calendar.rezoneDate(date); // gives it a 00:00 time
+		var end;
+
+		start.time(time);
+		end = start.clone().add(this.snapDuration);
+
+		return { start: start, end: end };
+	},
+
+
+	getHitEl: function(hit) {
+		return this.colEls.eq(hit.col);
+	},
+
+
+	/* Dates
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	rangeUpdated: function() {
+		this.updateDayTable();
+	},
+
+
+	// Given a row number of the grid, representing a "snap", returns a time (Duration) from its start-of-day
+	computeSnapTime: function(snapIndex) {
+		return moment.duration(this.minTime + this.snapDuration * snapIndex);
+	},
+
+
+	// Slices up a date range by column into an array of segments
+	rangeToSegs: function(range) {
+		var segs = this.sliceRangeByTimes(range);
+		var i;
+
+		for (i = 0; i < segs.length; i++) {
+			if (this.isRTL) {
+				segs[i].col = this.daysPerRow - 1 - segs[i].dayIndex;
+			}
+			else {
+				segs[i].col = segs[i].dayIndex;
+			}
+		}
+
+		return segs;
+	},
+
+
+	sliceRangeByTimes: function(range) {
+		var segs = [];
+		var seg;
+		var dayIndex;
+		var dayDate;
+		var dayRange;
+
+		// normalize :(
+		range = {
+			start: range.start.clone().stripZone(),
+			end: range.end.clone().stripZone()
+		};
+
+		for (dayIndex = 0; dayIndex < this.daysPerRow; dayIndex++) {
+			dayDate = this.dayDates[dayIndex].clone(); // TODO: better API for this?
+			dayRange = {
+				start: dayDate.clone().time(this.minTime),
+				end: dayDate.clone().time(this.maxTime)
+			};
+			seg = intersectionToSeg(range, dayRange); // both will be ambig timezone
+			if (seg) {
+				seg.dayIndex = dayIndex;
+				segs.push(seg);
+			}
+		}
+
+		return segs;
+	},
+
+
+	/* Coordinates
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	updateSize: function(isResize) { // NOT a standard Grid method
+		this.slatCoordCache.build();
+
+		if (isResize) {
+			this.updateSegVerticals();
+		}
+	},
+
+
+	// Computes the top coordinate, relative to the bounds of the grid, of the given date.
+	// A `startOfDayDate` must be given for avoiding ambiguity over how to treat midnight.
+	computeDateTop: function(date, startOfDayDate) {
+		return this.computeTimeTop(
+			moment.duration(
+				date.clone().stripZone() - startOfDayDate.clone().stripTime()
+			)
+		);
+	},
+
+
+	// Computes the top coordinate, relative to the bounds of the grid, of the given time (a Duration).
+	computeTimeTop: function(time) {
+		var len = this.slatEls.length;
+		var slatCoverage = (time - this.minTime) / this.slotDuration; // floating-point value of # of slots covered
+		var slatIndex;
+		var slatRemainder;
+
+		// compute a floating-point number for how many slats should be progressed through.
+		// from 0 to number of slats (inclusive)
+		// constrained because minTime/maxTime might be customized.
+		slatCoverage = Math.max(0, slatCoverage);
+		slatCoverage = Math.min(len, slatCoverage);
+
+		// an integer index of the furthest whole slat
+		// from 0 to number slats (*exclusive*, so len-1)
+		slatIndex = Math.floor(slatCoverage);
+		slatIndex = Math.min(slatIndex, len - 1);
+
+		// how much further through the slatIndex slat (from 0.0-1.0) must be covered in addition.
+		// could be 1.0 if slatCoverage is covering *all* the slots
+		slatRemainder = slatCoverage - slatIndex;
+
+		return this.slatCoordCache.getTopPosition(slatIndex) +
+			this.slatCoordCache.getHeight(slatIndex) * slatRemainder;
+	},
+
+
+
+	/* Event Drag Visualization
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Renders a visual indication of an event being dragged over the specified date(s).
+	// dropLocation's end might be null, as well as `seg`. See Grid::renderDrag for more info.
+	// A returned value of `true` signals that a mock "helper" event has been rendered.
+	renderDrag: function(dropLocation, seg) {
+
+		if (seg) { // if there is event information for this drag, render a helper event
+			this.renderRangeHelper(dropLocation, seg);
+			this.applyDragOpacity(this.helperEl);
+
+			return true; // signal that a helper has been rendered
+		}
+		else {
+			// otherwise, just render a highlight
+			this.renderHighlight(this.eventRangeToSegs(dropLocation));
+		}
+	},
+
+
+	// Unrenders any visual indication of an event being dragged
+	unrenderDrag: function() {
+		this.unrenderHelper();
+		this.unrenderHighlight();
+	},
+
+
+	/* Event Resize Visualization
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Renders a visual indication of an event being resized
+	renderEventResize: function(range, seg) {
+		this.renderRangeHelper(range, seg);
+	},
+
+
+	// Unrenders any visual indication of an event being resized
+	unrenderEventResize: function() {
+		this.unrenderHelper();
+	},
+
+
+	/* Event Helper
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Renders a mock "helper" event. `sourceSeg` is the original segment object and might be null (an external drag)
+	renderHelper: function(event, sourceSeg) {
+		var segs = this.eventsToSegs([ event ]);
+		var tableEl;
+		var i, seg;
+		var sourceEl;
+
+		segs = this.renderFgSegEls(segs); // assigns each seg's el and returns a subset of segs that were rendered
+		tableEl = this.renderSegTable(segs);
+
+		// Try to make the segment that is in the same row as sourceSeg look the same
+		for (i = 0; i < segs.length; i++) {
+			seg = segs[i];
+			if (sourceSeg && sourceSeg.col === seg.col) {
+				sourceEl = sourceSeg.el;
+				seg.el.css({
+					left: sourceEl.css('left'),
+					right: sourceEl.css('right'),
+					'margin-left': sourceEl.css('margin-left'),
+					'margin-right': sourceEl.css('margin-right')
+				});
+			}
+		}
+
+		this.helperEl = $('<div class="fc-helper-skeleton"/>')
+			.append(tableEl)
+				.appendTo(this.el);
+	},
+
+
+	// Unrenders any mock helper event
+	unrenderHelper: function() {
+		if (this.helperEl) {
+			this.helperEl.remove();
+			this.helperEl = null;
+		}
+	},
+
+
+	/* Selection
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Renders a visual indication of a selection. Overrides the default, which was to simply render a highlight.
+	renderSelection: function(range) {
+		if (this.view.opt('selectHelper')) { // this setting signals that a mock helper event should be rendered
+			this.renderRangeHelper(range);
+		}
+		else {
+			this.renderHighlight(this.selectionRangeToSegs(range));
+		}
+	},
+
+
+	// Unrenders any visual indication of a selection
+	unrenderSelection: function() {
+		this.unrenderHelper();
+		this.unrenderHighlight();
+	},
+
+
+	/* Fill System (highlight, background events, business hours)
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Renders a set of rectangles over the given time segments.
+	// Only returns segments that successfully rendered.
+	renderFill: function(type, segs, className) {
+		var segCols;
+		var skeletonEl;
+		var trEl;
+		var col, colSegs;
+		var tdEl;
+		var containerEl;
+		var dayDate;
+		var i, seg;
+
+		if (segs.length) {
+
+			segs = this.renderFillSegEls(type, segs); // assignes `.el` to each seg. returns successfully rendered segs
+			segCols = this.groupSegCols(segs); // group into sub-arrays, and assigns 'col' to each seg
+
+			className = className || type.toLowerCase();
+			skeletonEl = $(
+				'<div class="fc-' + className + '-skeleton">' +
+					'<table><tr/></table>' +
+				'</div>'
+			);
+			trEl = skeletonEl.find('tr');
+
+			for (col = 0; col < segCols.length; col++) {
+				colSegs = segCols[col];
+				tdEl = $('<td/>').appendTo(trEl);
+
+				if (colSegs.length) {
+					containerEl = $('<div class="fc-' + className + '-container"/>').appendTo(tdEl);
+					dayDate = this.getCellDate(0, col); // row=0
+
+					for (i = 0; i < colSegs.length; i++) {
+						seg = colSegs[i];
+						containerEl.append(
+							seg.el.css({
+								top: this.computeDateTop(seg.start, dayDate),
+								bottom: -this.computeDateTop(seg.end, dayDate) // the y position of the bottom edge
+							})
+						);
+					}
+				}
+			}
+
+			this.bookendCells(trEl);
+
+			this.el.append(skeletonEl);
+			this.elsByFill[type] = skeletonEl;
+		}
+
+		return segs;
+	}
+
+});
+
+;;
+
+/* Event-rendering methods for the TimeGrid class
+----------------------------------------------------------------------------------------------------------------------*/
+
+TimeGrid.mixin({
+
+	eventSkeletonEl: null, // has cells with event-containers, which contain absolutely positioned event elements
+
+
+	// Renders the given foreground event segments onto the grid
+	renderFgSegs: function(segs) {
+		segs = this.renderFgSegEls(segs); // returns a subset of the segs. segs that were actually rendered
+
+		this.el.append(
+			this.eventSkeletonEl = $('<div class="fc-content-skeleton"/>')
+				.append(this.renderSegTable(segs))
+		);
+
+		return segs; // return only the segs that were actually rendered
+	},
+
+
+	// Unrenders all currently rendered foreground event segments
+	unrenderFgSegs: function(segs) {
+		if (this.eventSkeletonEl) {
+			this.eventSkeletonEl.remove();
+			this.eventSkeletonEl = null;
+		}
+	},
+
+
+	// Renders and returns the <table> portion of the event-skeleton.
+	// Returns an object with properties 'tbodyEl' and 'segs'.
+	renderSegTable: function(segs) {
+		var tableEl = $('<table><tr/></table>');
+		var trEl = tableEl.find('tr');
+		var segCols;
+		var i, seg;
+		var col, colSegs;
+		var containerEl;
+
+		segCols = this.groupSegCols(segs); // group into sub-arrays, and assigns 'col' to each seg
+
+		this.computeSegVerticals(segs); // compute and assign top/bottom
+
+		for (col = 0; col < segCols.length; col++) { // iterate each column grouping
+			colSegs = segCols[col];
+			this.placeSlotSegs(colSegs); // compute horizontal coordinates, z-index's, and reorder the array
+
+			containerEl = $('<div class="fc-event-container"/>');
+
+			// assign positioning CSS and insert into container
+			for (i = 0; i < colSegs.length; i++) {
+				seg = colSegs[i];
+				seg.el.css(this.generateSegPositionCss(seg));
+
+				// if the height is short, add a className for alternate styling
+				if (seg.bottom - seg.top < 30) {
+					seg.el.addClass('fc-short');
+				}
+
+				containerEl.append(seg.el);
+			}
+
+			trEl.append($('<td/>').append(containerEl));
+		}
+
+		this.bookendCells(trEl);
+
+		return tableEl;
+	},
+
+
+	// Given an array of segments that are all in the same column, sets the backwardCoord and forwardCoord on each.
+	// NOTE: Also reorders the given array by date!
+	placeSlotSegs: function(segs) {
+		var levels;
+		var level0;
+		var i;
+
+		this.sortSegs(segs); // order by date
+		levels = buildSlotSegLevels(segs);
+		computeForwardSlotSegs(levels);
+
+		if ((level0 = levels[0])) {
+
+			for (i = 0; i < level0.length; i++) {
+				computeSlotSegPressures(level0[i]);
+			}
+
+			for (i = 0; i < level0.length; i++) {
+				this.computeSlotSegCoords(level0[i], 0, 0);
+			}
+		}
+	},
+
+
+	// Calculate seg.forwardCoord and seg.backwardCoord for the segment, where both values range
+	// from 0 to 1. If the calendar is left-to-right, the seg.backwardCoord maps to "left" and
+	// seg.forwardCoord maps to "right" (via percentage). Vice-versa if the calendar is right-to-left.
+	//
+	// The segment might be part of a "series", which means consecutive segments with the same pressure
+	// who's width is unknown until an edge has been hit. `seriesBackwardPressure` is the number of
+	// segments behind this one in the current series, and `seriesBackwardCoord` is the starting
+	// coordinate of the first segment in the series.
+	computeSlotSegCoords: function(seg, seriesBackwardPressure, seriesBackwardCoord) {
+		var forwardSegs = seg.forwardSegs;
+		var i;
+
+		if (seg.forwardCoord === undefined) { // not already computed
+
+			if (!forwardSegs.length) {
+
+				// if there are no forward segments, this segment should butt up against the edge
+				seg.forwardCoord = 1;
+			}
+			else {
+
+				// sort highest pressure first
+				this.sortForwardSlotSegs(forwardSegs);
+
+				// this segment's forwardCoord will be calculated from the backwardCoord of the
+				// highest-pressure forward segment.
+				this.computeSlotSegCoords(forwardSegs[0], seriesBackwardPressure + 1, seriesBackwardCoord);
+				seg.forwardCoord = forwardSegs[0].backwardCoord;
+			}
+
+			// calculate the backwardCoord from the forwardCoord. consider the series
+			seg.backwardCoord = seg.forwardCoord -
+				(seg.forwardCoord - seriesBackwardCoord) / // available width for series
+				(seriesBackwardPressure + 1); // # of segments in the series
+
+			// use this segment's coordinates to computed the coordinates of the less-pressurized
+			// forward segments
+			for (i=0; i<forwardSegs.length; i++) {
+				this.computeSlotSegCoords(forwardSegs[i], 0, seg.forwardCoord);
+			}
+		}
+	},
+
+
+	// Refreshes the CSS top/bottom coordinates for each segment element. Probably after a window resize/zoom.
+	// Repositions business hours segs too, so not just for events. Maybe shouldn't be here.
+	updateSegVerticals: function() {
+		var allSegs = (this.segs || []).concat(this.businessHourSegs || []);
+		var i;
+
+		this.computeSegVerticals(allSegs);
+
+		for (i = 0; i < allSegs.length; i++) {
+			allSegs[i].el.css(
+				this.generateSegVerticalCss(allSegs[i])
+			);
+		}
+	},
+
+
+	// For each segment in an array, computes and assigns its top and bottom properties
+	computeSegVerticals: function(segs) {
+		var i, seg;
+
+		for (i = 0; i < segs.length; i++) {
+			seg = segs[i];
+			seg.top = this.computeDateTop(seg.start, seg.start);
+			seg.bottom = this.computeDateTop(seg.end, seg.start);
+		}
+	},
+
+
+	// Renders the HTML for a single event segment's default rendering
+	fgSegHtml: function(seg, disableResizing) {
+		var view = this.view;
+		var event = seg.event;
+		var isDraggable = view.isEventDraggable(event);
+		var isResizableFromStart = !disableResizing && seg.isStart && view.isEventResizableFromStart(event);
+		var isResizableFromEnd = !disableResizing && seg.isEnd && view.isEventResizableFromEnd(event);
+		var classes = this.getSegClasses(seg, isDraggable, isResizableFromStart || isResizableFromEnd);
+		var skinCss = cssToStr(this.getEventSkinCss(event));
+		var timeText;
+		var fullTimeText; // more verbose time text. for the print stylesheet
+		var startTimeText; // just the start time text
+
+		classes.unshift('fc-time-grid-event', 'fc-v-event');
+
+		if (view.isMultiDayEvent(event)) { // if the event appears to span more than one day...
+			// Don't display time text on segments that run entirely through a day.
+			// That would appear as midnight-midnight and would look dumb.
+			// Otherwise, display the time text for the *segment's* times (like 6pm-midnight or midnight-10am)
+			if (seg.isStart || seg.isEnd) {
+				timeText = this.getEventTimeText(seg);
+				fullTimeText = this.getEventTimeText(seg, 'LT');
+				startTimeText = this.getEventTimeText(seg, null, false); // displayEnd=false
+			}
+		} else {
+			// Display the normal time text for the *event's* times
+			timeText = this.getEventTimeText(event);
+			fullTimeText = this.getEventTimeText(event, 'LT');
+			startTimeText = this.getEventTimeText(event, null, false); // displayEnd=false
+		}
+
+		return '<a class="' + classes.join(' ') + '"' +
+			(event.url ?
+				' href="' + htmlEscape(event.url) + '"' :
+				''
+				) +
+			(skinCss ?
+				' style="' + skinCss + '"' :
+				''
+				) +
+			'>' +
+				'<div class="fc-content">' +
+					(timeText ?
+						'<div class="fc-time"' +
+						' data-start="' + htmlEscape(startTimeText) + '"' +
+						' data-full="' + htmlEscape(fullTimeText) + '"' +
+						'>' +
+							'<span>' + htmlEscape(timeText) + '</span>' +
+						'</div>' :
+						''
+						) +
+					(event.title ?
+						'<div class="fc-title">' +
+							htmlEscape(event.title) +
+						'</div>' :
+						''
+						) +
+				'</div>' +
+				'<div class="fc-bg"/>' +
+				/* TODO: write CSS for this
+				(isResizableFromStart ?
+					'<div class="fc-resizer fc-start-resizer" />' :
+					''
+					) +
+				*/
+				(isResizableFromEnd ?
+					'<div class="fc-resizer fc-end-resizer" />' :
+					''
+					) +
+			'</a>';
+	},
+
+
+	// Generates an object with CSS properties/values that should be applied to an event segment element.
+	// Contains important positioning-related properties that should be applied to any event element, customized or not.
+	generateSegPositionCss: function(seg) {
+		var shouldOverlap = this.view.opt('slotEventOverlap');
+		var backwardCoord = seg.backwardCoord; // the left side if LTR. the right side if RTL. floating-point
+		var forwardCoord = seg.forwardCoord; // the right side if LTR. the left side if RTL. floating-point
+		var props = this.generateSegVerticalCss(seg); // get top/bottom first
+		var left; // amount of space from left edge, a fraction of the total width
+		var right; // amount of space from right edge, a fraction of the total width
+
+		if (shouldOverlap) {
+			// double the width, but don't go beyond the maximum forward coordinate (1.0)
+			forwardCoord = Math.min(1, backwardCoord + (forwardCoord - backwardCoord) * 2);
+		}
+
+		if (this.isRTL) {
+			left = 1 - forwardCoord;
+			right = backwardCoord;
+		}
+		else {
+			left = backwardCoord;
+			right = 1 - forwardCoord;
+		}
+
+		props.zIndex = seg.level + 1; // convert from 0-base to 1-based
+		props.left = left * 100 + '%';
+		props.right = right * 100 + '%';
+
+		if (shouldOverlap && seg.forwardPressure) {
+			// add padding to the edge so that forward stacked events don't cover the resizer's icon
+			props[this.isRTL ? 'marginLeft' : 'marginRight'] = 10 * 2; // 10 is a guesstimate of the icon's width
+		}
+
+		return props;
+	},
+
+
+	// Generates an object with CSS properties for the top/bottom coordinates of a segment element
+	generateSegVerticalCss: function(seg) {
+		return {
+			top: seg.top,
+			bottom: -seg.bottom // flipped because needs to be space beyond bottom edge of event container
+		};
+	},
+
+
+	// Given a flat array of segments, return an array of sub-arrays, grouped by each segment's col
+	groupSegCols: function(segs) {
+		var segCols = [];
+		var i;
+
+		for (i = 0; i < this.colCnt; i++) {
+			segCols.push([]);
+		}
+
+		for (i = 0; i < segs.length; i++) {
+			segCols[segs[i].col].push(segs[i]);
+		}
+
+		return segCols;
+	},
+
+
+	sortForwardSlotSegs: function(forwardSegs) {
+		forwardSegs.sort(proxy(this, 'compareForwardSlotSegs'));
+	},
+
+
+	// A cmp function for determining which forward segment to rely on more when computing coordinates.
+	compareForwardSlotSegs: function(seg1, seg2) {
+		// put higher-pressure first
+		return seg2.forwardPressure - seg1.forwardPressure ||
+			// put segments that are closer to initial edge first (and favor ones with no coords yet)
+			(seg1.backwardCoord || 0) - (seg2.backwardCoord || 0) ||
+			// do normal sorting...
+			this.compareSegs(seg1, seg2);
+	}
+
+});
+
+
+// Builds an array of segments "levels". The first level will be the leftmost tier of segments if the calendar is
+// left-to-right, or the rightmost if the calendar is right-to-left. Assumes the segments are already ordered by date.
+function buildSlotSegLevels(segs) {
+	var levels = [];
+	var i, seg;
+	var j;
+
+	for (i=0; i<segs.length; i++) {
+		seg = segs[i];
+
+		// go through all the levels and stop on the first level where there are no collisions
+		for (j=0; j<levels.length; j++) {
+			if (!computeSlotSegCollisions(seg, levels[j]).length) {
+				break;
+			}
+		}
+
+		seg.level = j;
+
+		(levels[j] || (levels[j] = [])).push(seg);
+	}
 
-// function for adding/overriding defaults
-function setDefaults(d) {
-	$.extend(true, defaults, d);
+	return levels;
 }
 
 
+// For every segment, figure out the other segments that are in subsequent
+// levels that also occupy the same vertical space. Accumulate in seg.forwardSegs
+function computeForwardSlotSegs(levels) {
+	var i, level;
+	var j, seg;
+	var k;
+
+	for (i=0; i<levels.length; i++) {
+		level = levels[i];
+
+		for (j=0; j<level.length; j++) {
+			seg = level[j];
+
+			seg.forwardSegs = [];
+			for (k=i+1; k<levels.length; k++) {
+				computeSlotSegCollisions(seg, levels[k], seg.forwardSegs);
+			}
+		}
+	}
+}
+
+
+// Figure out which path forward (via seg.forwardSegs) results in the longest path until
+// the furthest edge is reached. The number of segments in this path will be seg.forwardPressure
+function computeSlotSegPressures(seg) {
+	var forwardSegs = seg.forwardSegs;
+	var forwardPressure = 0;
+	var i, forwardSeg;
+
+	if (seg.forwardPressure === undefined) { // not already computed
+
+		for (i=0; i<forwardSegs.length; i++) {
+			forwardSeg = forwardSegs[i];
+
+			// figure out the child's maximum forward path
+			computeSlotSegPressures(forwardSeg);
+
+			// either use the existing maximum, or use the child's forward pressure
+			// plus one (for the forwardSeg itself)
+			forwardPressure = Math.max(
+				forwardPressure,
+				1 + forwardSeg.forwardPressure
+			);
+		}
+
+		seg.forwardPressure = forwardPressure;
+	}
+}
+
+
+// Find all the segments in `otherSegs` that vertically collide with `seg`.
+// Append into an optionally-supplied `results` array and return.
+function computeSlotSegCollisions(seg, otherSegs, results) {
+	results = results || [];
+
+	for (var i=0; i<otherSegs.length; i++) {
+		if (isSlotSegCollision(seg, otherSegs[i])) {
+			results.push(otherSegs[i]);
+		}
+	}
+
+	return results;
+}
+
+
+// Do these segments occupy the same vertical space?
+function isSlotSegCollision(seg1, seg2) {
+	return seg1.bottom > seg2.top && seg1.top < seg2.bottom;
+}
+
+;;
+
+/* An abstract class from which other views inherit from
+----------------------------------------------------------------------------------------------------------------------*/
+
+var View = FC.View = Class.extend({
+
+	type: null, // subclass' view name (string)
+	name: null, // deprecated. use `type` instead
+	title: null, // the text that will be displayed in the header's title
+
+	calendar: null, // owner Calendar object
+	options: null, // hash containing all options. already merged with view-specific-options
+	el: null, // the view's containing element. set by Calendar
+
+	displaying: null, // a promise representing the state of rendering. null if no render requested
+	isSkeletonRendered: false,
+	isEventsRendered: false,
+
+	// range the view is actually displaying (moments)
+	start: null,
+	end: null, // exclusive
+
+	// range the view is formally responsible for (moments)
+	// may be different from start/end. for example, a month view might have 1st-31st, excluding padded dates
+	intervalStart: null,
+	intervalEnd: null, // exclusive
+	intervalDuration: null,
+	intervalUnit: null, // name of largest unit being displayed, like "month" or "week"
+
+	isRTL: false,
+	isSelected: false, // boolean whether a range of time is user-selected or not
+
+	eventOrderSpecs: null, // criteria for ordering events when they have same date/time
+
+	// subclasses can optionally use a scroll container
+	scrollerEl: null, // the element that will most likely scroll when content is too tall
+	scrollTop: null, // cached vertical scroll value
+
+	// classNames styled by jqui themes
+	widgetHeaderClass: null,
+	widgetContentClass: null,
+	highlightStateClass: null,
+
+	// for date utils, computed from options
+	nextDayThreshold: null,
+	isHiddenDayHash: null,
+
+	// document handlers, bound to `this` object
+	documentMousedownProxy: null, // TODO: doesn't work with touch
+
+
+	constructor: function(calendar, type, options, intervalDuration) {
+
+		this.calendar = calendar;
+		this.type = this.name = type; // .name is deprecated
+		this.options = options;
+		this.intervalDuration = intervalDuration || moment.duration(1, 'day');
+
+		this.nextDayThreshold = moment.duration(this.opt('nextDayThreshold'));
+		this.initThemingProps();
+		this.initHiddenDays();
+		this.isRTL = this.opt('isRTL');
+
+		this.eventOrderSpecs = parseFieldSpecs(this.opt('eventOrder'));
+
+		this.documentMousedownProxy = proxy(this, 'documentMousedown');
+
+		this.initialize();
+	},
+
+
+	// A good place for subclasses to initialize member variables
+	initialize: function() {
+		// subclasses can implement
+	},
+
+
+	// Retrieves an option with the given name
+	opt: function(name) {
+		return this.options[name];
+	},
+
+
+	// Triggers handlers that are view-related. Modifies args before passing to calendar.
+	trigger: function(name, thisObj) { // arguments beyond thisObj are passed along
+		var calendar = this.calendar;
+
+		return calendar.trigger.apply(
+			calendar,
+			[name, thisObj || this].concat(
+				Array.prototype.slice.call(arguments, 2), // arguments beyond thisObj
+				[ this ] // always make the last argument a reference to the view. TODO: deprecate
+			)
+		);
+	},
+
+
+	/* Dates
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Updates all internal dates to center around the given current date
+	setDate: function(date) {
+		this.setRange(this.computeRange(date));
+	},
+
+
+	// Updates all internal dates for displaying the given range.
+	// Expects all values to be normalized (like what computeRange does).
+	setRange: function(range) {
+		$.extend(this, range);
+		this.updateTitle();
+	},
+
+
+	// Given a single current date, produce information about what range to display.
+	// Subclasses can override. Must return all properties.
+	computeRange: function(date) {
+		var intervalUnit = computeIntervalUnit(this.intervalDuration);
+		var intervalStart = date.clone().startOf(intervalUnit);
+		var intervalEnd = intervalStart.clone().add(this.intervalDuration);
+		var start, end;
+
+		// normalize the range's time-ambiguity
+		if (/year|month|week|day/.test(intervalUnit)) { // whole-days?
+			intervalStart.stripTime();
+			intervalEnd.stripTime();
+		}
+		else { // needs to have a time?
+			if (!intervalStart.hasTime()) {
+				intervalStart = this.calendar.rezoneDate(intervalStart); // convert to current timezone, with 00:00
+			}
+			if (!intervalEnd.hasTime()) {
+				intervalEnd = this.calendar.rezoneDate(intervalEnd); // convert to current timezone, with 00:00
+			}
+		}
+
+		start = intervalStart.clone();
+		start = this.skipHiddenDays(start);
+		end = intervalEnd.clone();
+		end = this.skipHiddenDays(end, -1, true); // exclusively move backwards
+
+		return {
+			intervalUnit: intervalUnit,
+			intervalStart: intervalStart,
+			intervalEnd: intervalEnd,
+			start: start,
+			end: end
+		};
+	},
+
+
+	// Computes the new date when the user hits the prev button, given the current date
+	computePrevDate: function(date) {
+		return this.massageCurrentDate(
+			date.clone().startOf(this.intervalUnit).subtract(this.intervalDuration), -1
+		);
+	},
+
+
+	// Computes the new date when the user hits the next button, given the current date
+	computeNextDate: function(date) {
+		return this.massageCurrentDate(
+			date.clone().startOf(this.intervalUnit).add(this.intervalDuration)
+		);
+	},
+
+
+	// Given an arbitrarily calculated current date of the calendar, returns a date that is ensured to be completely
+	// visible. `direction` is optional and indicates which direction the current date was being
+	// incremented or decremented (1 or -1).
+	massageCurrentDate: function(date, direction) {
+		if (this.intervalDuration.as('days') <= 1) { // if the view displays a single day or smaller
+			if (this.isHiddenDay(date)) {
+				date = this.skipHiddenDays(date, direction);
+				date.startOf('day');
+			}
+		}
+
+		return date;
+	},
+
+
+	/* Title and Date Formatting
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Sets the view's title property to the most updated computed value
+	updateTitle: function() {
+		this.title = this.computeTitle();
+	},
+
+
+	// Computes what the title at the top of the calendar should be for this view
+	computeTitle: function() {
+		return this.formatRange(
+			{ start: this.intervalStart, end: this.intervalEnd },
+			this.opt('titleFormat') || this.computeTitleFormat(),
+			this.opt('titleRangeSeparator')
+		);
+	},
+
+
+	// Generates the format string that should be used to generate the title for the current date range.
+	// Attempts to compute the most appropriate format if not explicitly specified with `titleFormat`.
+	computeTitleFormat: function() {
+		if (this.intervalUnit == 'year') {
+			return 'YYYY';
+		}
+		else if (this.intervalUnit == 'month') {
+			return this.opt('monthYearFormat'); // like "September 2014"
+		}
+		else if (this.intervalDuration.as('days') > 1) {
+			return 'll'; // multi-day range. shorter, like "Sep 9 - 10 2014"
+		}
+		else {
+			return 'LL'; // one day. longer, like "September 9 2014"
+		}
+	},
+
+
+	// Utility for formatting a range. Accepts a range object, formatting string, and optional separator.
+	// Displays all-day ranges naturally, with an inclusive end. Takes the current isRTL into account.
+	formatRange: function(range, formatStr, separator) {
+		var end = range.end;
+
+		if (!end.hasTime()) { // all-day?
+			end = end.clone().subtract(1); // convert to inclusive. last ms of previous day
+		}
+
+		return formatRange(range.start, end, formatStr, separator, this.opt('isRTL'));
+	},
+
+
+	/* Rendering
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Sets the container element that the view should render inside of.
+	// Does other DOM-related initializations.
+	setElement: function(el) {
+		this.el = el;
+		this.bindGlobalHandlers();
+	},
+
+
+	// Removes the view's container element from the DOM, clearing any content beforehand.
+	// Undoes any other DOM-related attachments.
+	removeElement: function() {
+		this.clear(); // clears all content
+
+		// clean up the skeleton
+		if (this.isSkeletonRendered) {
+			this.unrenderSkeleton();
+			this.isSkeletonRendered = false;
+		}
+
+		this.unbindGlobalHandlers();
+
+		this.el.remove();
+
+		// NOTE: don't null-out this.el in case the View was destroyed within an API callback.
+		// We don't null-out the View's other jQuery element references upon destroy,
+		//  so we shouldn't kill this.el either.
+	},
+
+
+	// Does everything necessary to display the view centered around the given date.
+	// Does every type of rendering EXCEPT rendering events.
+	// Is asychronous and returns a promise.
+	display: function(date) {
+		var _this = this;
+		var scrollState = null;
+
+		if (this.displaying) {
+			scrollState = this.queryScroll();
+		}
+
+		return this.clear().then(function() { // clear the content first (async)
+			return (
+				_this.displaying =
+					$.when(_this.displayView(date)) // displayView might return a promise
+						.then(function() {
+							_this.forceScroll(_this.computeInitialScroll(scrollState));
+							_this.triggerRender();
+						})
+			);
+		});
+	},
+
+
+	// Does everything necessary to clear the content of the view.
+	// Clears dates and events. Does not clear the skeleton.
+	// Is asychronous and returns a promise.
+	clear: function() {
+		var _this = this;
+		var displaying = this.displaying;
+
+		if (displaying) { // previously displayed, or in the process of being displayed?
+			return displaying.then(function() { // wait for the display to finish
+				_this.displaying = null;
+				_this.clearEvents();
+				return _this.clearView(); // might return a promise. chain it
+			});
+		}
+		else {
+			return $.when(); // an immediately-resolved promise
+		}
+	},
+
+
+	// Displays the view's non-event content, such as date-related content or anything required by events.
+	// Renders the view's non-content skeleton if necessary.
+	// Can be asynchronous and return a promise.
+	displayView: function(date) {
+		if (!this.isSkeletonRendered) {
+			this.renderSkeleton();
+			this.isSkeletonRendered = true;
+		}
+		this.setDate(date);
+		if (this.render) {
+			this.render(); // TODO: deprecate
+		}
+		this.renderDates();
+		this.updateSize();
+		this.renderBusinessHours(); // might need coordinates, so should go after updateSize()
+	},
+
+
+	// Unrenders the view content that was rendered in displayView.
+	// Can be asynchronous and return a promise.
+	clearView: function() {
+		this.unselect();
+		this.triggerUnrender();
+		this.unrenderBusinessHours();
+		this.unrenderDates();
+		if (this.destroy) {
+			this.destroy(); // TODO: deprecate
+		}
+	},
+
+
+	// Renders the basic structure of the view before any content is rendered
+	renderSkeleton: function() {
+		// subclasses should implement
+	},
+
+
+	// Unrenders the basic structure of the view
+	unrenderSkeleton: function() {
+		// subclasses should implement
+	},
+
+
+	// Renders the view's date-related content.
+	// Assumes setRange has already been called and the skeleton has already been rendered.
+	renderDates: function() {
+		// subclasses should implement
+	},
+
+
+	// Unrenders the view's date-related content
+	unrenderDates: function() {
+		// subclasses should override
+	},
+
+
+	// Renders business-hours onto the view. Assumes updateSize has already been called.
+	renderBusinessHours: function() {
+		// subclasses should implement
+	},
+
+
+	// Unrenders previously-rendered business-hours
+	unrenderBusinessHours: function() {
+		// subclasses should implement
+	},
+
+
+	// Signals that the view's content has been rendered
+	triggerRender: function() {
+		this.trigger('viewRender', this, this, this.el);
+	},
+
+
+	// Signals that the view's content is about to be unrendered
+	triggerUnrender: function() {
+		this.trigger('viewDestroy', this, this, this.el);
+	},
+
+
+	// Binds DOM handlers to elements that reside outside the view container, such as the document
+	bindGlobalHandlers: function() {
+		$(document).on('mousedown', this.documentMousedownProxy);
+	},
+
+
+	// Unbinds DOM handlers from elements that reside outside the view container
+	unbindGlobalHandlers: function() {
+		$(document).off('mousedown', this.documentMousedownProxy);
+	},
+
+
+	// Initializes internal variables related to theming
+	initThemingProps: function() {
+		var tm = this.opt('theme') ? 'ui' : 'fc';
+
+		this.widgetHeaderClass = tm + '-widget-header';
+		this.widgetContentClass = tm + '-widget-content';
+		this.highlightStateClass = tm + '-state-highlight';
+	},
+
+
+	/* Dimensions
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Refreshes anything dependant upon sizing of the container element of the grid
+	updateSize: function(isResize) {
+		var scrollState;
+
+		if (isResize) {
+			scrollState = this.queryScroll();
+		}
+
+		this.updateHeight(isResize);
+		this.updateWidth(isResize);
+
+		if (isResize) {
+			this.setScroll(scrollState);
+		}
+	},
+
+
+	// Refreshes the horizontal dimensions of the calendar
+	updateWidth: function(isResize) {
+		// subclasses should implement
+	},
+
+
+	// Refreshes the vertical dimensions of the calendar
+	updateHeight: function(isResize) {
+		var calendar = this.calendar; // we poll the calendar for height information
+
+		this.setHeight(
+			calendar.getSuggestedViewHeight(),
+			calendar.isHeightAuto()
+		);
+	},
+
+
+	// Updates the vertical dimensions of the calendar to the specified height.
+	// if `isAuto` is set to true, height becomes merely a suggestion and the view should use its "natural" height.
+	setHeight: function(height, isAuto) {
+		// subclasses should implement
+	},
+
+
+	/* Scroller
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Given the total height of the view, return the number of pixels that should be used for the scroller.
+	// Utility for subclasses.
+	computeScrollerHeight: function(totalHeight) {
+		var scrollerEl = this.scrollerEl;
+		var both;
+		var otherHeight; // cumulative height of everything that is not the scrollerEl in the view (header+borders)
+
+		both = this.el.add(scrollerEl);
+
+		// fuckin IE8/9/10/11 sometimes returns 0 for dimensions. this weird hack was the only thing that worked
+		both.css({
+			position: 'relative', // cause a reflow, which will force fresh dimension recalculation
+			left: -1 // ensure reflow in case the el was already relative. negative is less likely to cause new scroll
+		});
+		otherHeight = this.el.outerHeight() - scrollerEl.height(); // grab the dimensions
+		both.css({ position: '', left: '' }); // undo hack
+
+		return totalHeight - otherHeight;
+	},
+
+
+	// Computes the initial pre-configured scroll state prior to allowing the user to change it.
+	// Given the scroll state from the previous rendering. If first time rendering, given null.
+	computeInitialScroll: function(previousScrollState) {
+		return 0;
+	},
+
+
+	// Retrieves the view's current natural scroll state. Can return an arbitrary format.
+	queryScroll: function() {
+		if (this.scrollerEl) {
+			return this.scrollerEl.scrollTop(); // operates on scrollerEl by default
+		}
+	},
+
+
+	// Sets the view's scroll state. Will accept the same format computeInitialScroll and queryScroll produce.
+	setScroll: function(scrollState) {
+		if (this.scrollerEl) {
+			return this.scrollerEl.scrollTop(scrollState); // operates on scrollerEl by default
+		}
+	},
+
+
+	// Sets the scroll state, making sure to overcome any predefined scroll value the browser has in mind
+	forceScroll: function(scrollState) {
+		var _this = this;
+
+		this.setScroll(scrollState);
+		setTimeout(function() {
+			_this.setScroll(scrollState);
+		}, 0);
+	},
+
+
+	/* Event Elements / Segments
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Does everything necessary to display the given events onto the current view
+	displayEvents: function(events) {
+		var scrollState = this.queryScroll();
+
+		this.clearEvents();
+		this.renderEvents(events);
+		this.isEventsRendered = true;
+		this.setScroll(scrollState);
+		this.triggerEventRender();
+	},
+
+
+	// Does everything necessary to clear the view's currently-rendered events
+	clearEvents: function() {
+		if (this.isEventsRendered) {
+			this.triggerEventUnrender();
+			if (this.destroyEvents) {
+				this.destroyEvents(); // TODO: deprecate
+			}
+			this.unrenderEvents();
+			this.isEventsRendered = false;
+		}
+	},
+
+
+	// Renders the events onto the view.
+	renderEvents: function(events) {
+		// subclasses should implement
+	},
+
+
+	// Removes event elements from the view.
+	unrenderEvents: function() {
+		// subclasses should implement
+	},
+
+
+	// Signals that all events have been rendered
+	triggerEventRender: function() {
+		this.renderedEventSegEach(function(seg) {
+			this.trigger('eventAfterRender', seg.event, seg.event, seg.el);
+		});
+		this.trigger('eventAfterAllRender');
+	},
+
+
+	// Signals that all event elements are about to be removed
+	triggerEventUnrender: function() {
+		this.renderedEventSegEach(function(seg) {
+			this.trigger('eventDestroy', seg.event, seg.event, seg.el);
+		});
+	},
+
+
+	// Given an event and the default element used for rendering, returns the element that should actually be used.
+	// Basically runs events and elements through the eventRender hook.
+	resolveEventEl: function(event, el) {
+		var custom = this.trigger('eventRender', event, event, el);
+
+		if (custom === false) { // means don't render at all
+			el = null;
+		}
+		else if (custom && custom !== true) {
+			el = $(custom);
+		}
+
+		return el;
+	},
+
+
+	// Hides all rendered event segments linked to the given event
+	showEvent: function(event) {
+		this.renderedEventSegEach(function(seg) {
+			seg.el.css('visibility', '');
+		}, event);
+	},
+
+
+	// Shows all rendered event segments linked to the given event
+	hideEvent: function(event) {
+		this.renderedEventSegEach(function(seg) {
+			seg.el.css('visibility', 'hidden');
+		}, event);
+	},
+
+
+	// Iterates through event segments that have been rendered (have an el). Goes through all by default.
+	// If the optional `event` argument is specified, only iterates through segments linked to that event.
+	// The `this` value of the callback function will be the view.
+	renderedEventSegEach: function(func, event) {
+		var segs = this.getEventSegs();
+		var i;
+
+		for (i = 0; i < segs.length; i++) {
+			if (!event || segs[i].event._id === event._id) {
+				if (segs[i].el) {
+					func.call(this, segs[i]);
+				}
+			}
+		}
+	},
+
+
+	// Retrieves all the rendered segment objects for the view
+	getEventSegs: function() {
+		// subclasses must implement
+		return [];
+	},
+
+
+	/* Event Drag-n-Drop
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Computes if the given event is allowed to be dragged by the user
+	isEventDraggable: function(event) {
+		var source = event.source || {};
+
+		return firstDefined(
+			event.startEditable,
+			source.startEditable,
+			this.opt('eventStartEditable'),
+			event.editable,
+			source.editable,
+			this.opt('editable')
+		);
+	},
+
+
+	// Must be called when an event in the view is dropped onto new location.
+	// `dropLocation` is an object that contains the new start/end/allDay values for the event.
+	reportEventDrop: function(event, dropLocation, largeUnit, el, ev) {
+		var calendar = this.calendar;
+		var mutateResult = calendar.mutateEvent(event, dropLocation, largeUnit);
+		var undoFunc = function() {
+			mutateResult.undo();
+			calendar.reportEventChange();
+		};
+
+		this.triggerEventDrop(event, mutateResult.dateDelta, undoFunc, el, ev);
+		calendar.reportEventChange(); // will rerender events
+	},
+
+
+	// Triggers event-drop handlers that have subscribed via the API
+	triggerEventDrop: function(event, dateDelta, undoFunc, el, ev) {
+		this.trigger('eventDrop', el[0], event, dateDelta, undoFunc, ev, {}); // {} = jqui dummy
+	},
+
+
+	/* External Element Drag-n-Drop
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Must be called when an external element, via jQuery UI, has been dropped onto the calendar.
+	// `meta` is the parsed data that has been embedded into the dragging event.
+	// `dropLocation` is an object that contains the new start/end/allDay values for the event.
+	reportExternalDrop: function(meta, dropLocation, el, ev, ui) {
+		var eventProps = meta.eventProps;
+		var eventInput;
+		var event;
+
+		// Try to build an event object and render it. TODO: decouple the two
+		if (eventProps) {
+			eventInput = $.extend({}, eventProps, dropLocation);
+			event = this.calendar.renderEvent(eventInput, meta.stick)[0]; // renderEvent returns an array
+		}
+
+		this.triggerExternalDrop(event, dropLocation, el, ev, ui);
+	},
+
+
+	// Triggers external-drop handlers that have subscribed via the API
+	triggerExternalDrop: function(event, dropLocation, el, ev, ui) {
+
+		// trigger 'drop' regardless of whether element represents an event
+		this.trigger('drop', el[0], dropLocation.start, ev, ui);
+
+		if (event) {
+			this.trigger('eventReceive', null, event); // signal an external event landed
+		}
+	},
+
+
+	/* Drag-n-Drop Rendering (for both events and external elements)
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Renders a visual indication of a event or external-element drag over the given drop zone.
+	// If an external-element, seg will be `null`
+	renderDrag: function(dropLocation, seg) {
+		// subclasses must implement
+	},
+
+
+	// Unrenders a visual indication of an event or external-element being dragged.
+	unrenderDrag: function() {
+		// subclasses must implement
+	},
+
+
+	/* Event Resizing
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Computes if the given event is allowed to be resized from its starting edge
+	isEventResizableFromStart: function(event) {
+		return this.opt('eventResizableFromStart') && this.isEventResizable(event);
+	},
+
+
+	// Computes if the given event is allowed to be resized from its ending edge
+	isEventResizableFromEnd: function(event) {
+		return this.isEventResizable(event);
+	},
+
+
+	// Computes if the given event is allowed to be resized by the user at all
+	isEventResizable: function(event) {
+		var source = event.source || {};
+
+		return firstDefined(
+			event.durationEditable,
+			source.durationEditable,
+			this.opt('eventDurationEditable'),
+			event.editable,
+			source.editable,
+			this.opt('editable')
+		);
+	},
+
+
+	// Must be called when an event in the view has been resized to a new length
+	reportEventResize: function(event, resizeLocation, largeUnit, el, ev) {
+		var calendar = this.calendar;
+		var mutateResult = calendar.mutateEvent(event, resizeLocation, largeUnit);
+		var undoFunc = function() {
+			mutateResult.undo();
+			calendar.reportEventChange();
+		};
+
+		this.triggerEventResize(event, mutateResult.durationDelta, undoFunc, el, ev);
+		calendar.reportEventChange(); // will rerender events
+	},
+
+
+	// Triggers event-resize handlers that have subscribed via the API
+	triggerEventResize: function(event, durationDelta, undoFunc, el, ev) {
+		this.trigger('eventResize', el[0], event, durationDelta, undoFunc, ev, {}); // {} = jqui dummy
+	},
+
+
+	/* Selection
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Selects a date range on the view. `start` and `end` are both Moments.
+	// `ev` is the native mouse event that begin the interaction.
+	select: function(range, ev) {
+		this.unselect(ev);
+		this.renderSelection(range);
+		this.reportSelection(range, ev);
+	},
+
+
+	// Renders a visual indication of the selection
+	renderSelection: function(range) {
+		// subclasses should implement
+	},
+
+
+	// Called when a new selection is made. Updates internal state and triggers handlers.
+	reportSelection: function(range, ev) {
+		this.isSelected = true;
+		this.triggerSelect(range, ev);
+	},
+
+
+	// Triggers handlers to 'select'
+	triggerSelect: function(range, ev) {
+		this.trigger('select', null, range.start, range.end, ev);
+	},
+
+
+	// Undoes a selection. updates in the internal state and triggers handlers.
+	// `ev` is the native mouse event that began the interaction.
+	unselect: function(ev) {
+		if (this.isSelected) {
+			this.isSelected = false;
+			if (this.destroySelection) {
+				this.destroySelection(); // TODO: deprecate
+			}
+			this.unrenderSelection();
+			this.trigger('unselect', null, ev);
+		}
+	},
+
+
+	// Unrenders a visual indication of selection
+	unrenderSelection: function() {
+		// subclasses should implement
+	},
+
+
+	// Handler for unselecting when the user clicks something and the 'unselectAuto' setting is on
+	documentMousedown: function(ev) {
+		var ignore;
+
+		// is there a selection, and has the user made a proper left click?
+		if (this.isSelected && this.opt('unselectAuto') && isPrimaryMouseButton(ev)) {
+
+			// only unselect if the clicked element is not identical to or inside of an 'unselectCancel' element
+			ignore = this.opt('unselectCancel');
+			if (!ignore || !$(ev.target).closest(ignore).length) {
+				this.unselect(ev);
+			}
+		}
+	},
+
+
+	/* Day Click
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Triggers handlers to 'dayClick'
+	triggerDayClick: function(date, dayEl, ev) {
+		this.trigger('dayClick', dayEl, date, ev);
+	},
+
+
+	/* Date Utils
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Initializes internal variables related to calculating hidden days-of-week
+	initHiddenDays: function() {
+		var hiddenDays = this.opt('hiddenDays') || []; // array of day-of-week indices that are hidden
+		var isHiddenDayHash = []; // is the day-of-week hidden? (hash with day-of-week-index -> bool)
+		var dayCnt = 0;
+		var i;
+
+		if (this.opt('weekends') === false) {
+			hiddenDays.push(0, 6); // 0=sunday, 6=saturday
+		}
+
+		for (i = 0; i < 7; i++) {
+			if (
+				!(isHiddenDayHash[i] = $.inArray(i, hiddenDays) !== -1)
+			) {
+				dayCnt++;
+			}
+		}
+
+		if (!dayCnt) {
+			throw 'invalid hiddenDays'; // all days were hidden? bad.
+		}
+
+		this.isHiddenDayHash = isHiddenDayHash;
+	},
+
+
+	// Is the current day hidden?
+	// `day` is a day-of-week index (0-6), or a Moment
+	isHiddenDay: function(day) {
+		if (moment.isMoment(day)) {
+			day = day.day();
+		}
+		return this.isHiddenDayHash[day];
+	},
+
+
+	// Incrementing the current day until it is no longer a hidden day, returning a copy.
+	// If the initial value of `date` is not a hidden day, don't do anything.
+	// Pass `isExclusive` as `true` if you are dealing with an end date.
+	// `inc` defaults to `1` (increment one day forward each time)
+	skipHiddenDays: function(date, inc, isExclusive) {
+		var out = date.clone();
+		inc = inc || 1;
+		while (
+			this.isHiddenDayHash[(out.day() + (isExclusive ? inc : 0) + 7) % 7]
+		) {
+			out.add(inc, 'days');
+		}
+		return out;
+	},
+
+
+	// Returns the date range of the full days the given range visually appears to occupy.
+	// Returns a new range object.
+	computeDayRange: function(range) {
+		var startDay = range.start.clone().stripTime(); // the beginning of the day the range starts
+		var end = range.end;
+		var endDay = null;
+		var endTimeMS;
+
+		if (end) {
+			endDay = end.clone().stripTime(); // the beginning of the day the range exclusively ends
+			endTimeMS = +end.time(); // # of milliseconds into `endDay`
+
+			// If the end time is actually inclusively part of the next day and is equal to or
+			// beyond the next day threshold, adjust the end to be the exclusive end of `endDay`.
+			// Otherwise, leaving it as inclusive will cause it to exclude `endDay`.
+			if (endTimeMS && endTimeMS >= this.nextDayThreshold) {
+				endDay.add(1, 'days');
+			}
+		}
+
+		// If no end was specified, or if it is within `startDay` but not past nextDayThreshold,
+		// assign the default duration of one day.
+		if (!end || endDay <= startDay) {
+			endDay = startDay.clone().add(1, 'days');
+		}
+
+		return { start: startDay, end: endDay };
+	},
+
+
+	// Does the given event visually appear to occupy more than one day?
+	isMultiDayEvent: function(event) {
+		var range = this.computeDayRange(event); // event is range-ish
+
+		return range.end.diff(range.start, 'days') > 1;
+	}
+
+});
 
 ;;
 
- 
-function Calendar(element, options, eventSources) {
+var Calendar = FC.Calendar = Class.extend({
+
+	dirDefaults: null, // option defaults related to LTR or RTL
+	langDefaults: null, // option defaults related to current locale
+	overrides: null, // option overrides given to the fullCalendar constructor
+	options: null, // all defaults combined with overrides
+	viewSpecCache: null, // cache of view definitions
+	view: null, // current View object
+	header: null,
+	loadingLevel: 0, // number of simultaneous loading tasks
+
+
+	// a lot of this class' OOP logic is scoped within this constructor function,
+	// but in the future, write individual methods on the prototype.
+	constructor: Calendar_constructor,
+
+
+	// Subclasses can override this for initialization logic after the constructor has been called
+	initialize: function() {
+	},
+
+
+	// Initializes `this.options` and other important options-related objects
+	initOptions: function(overrides) {
+		var lang, langDefaults;
+		var isRTL, dirDefaults;
+
+		// converts legacy options into non-legacy ones.
+		// in the future, when this is removed, don't use `overrides` reference. make a copy.
+		overrides = massageOverrides(overrides);
+
+		lang = overrides.lang;
+		langDefaults = langOptionHash[lang];
+		if (!langDefaults) {
+			lang = Calendar.defaults.lang;
+			langDefaults = langOptionHash[lang] || {};
+		}
+
+		isRTL = firstDefined(
+			overrides.isRTL,
+			langDefaults.isRTL,
+			Calendar.defaults.isRTL
+		);
+		dirDefaults = isRTL ? Calendar.rtlDefaults : {};
+
+		this.dirDefaults = dirDefaults;
+		this.langDefaults = langDefaults;
+		this.overrides = overrides;
+		this.options = mergeOptions([ // merge defaults and overrides. lowest to highest precedence
+			Calendar.defaults, // global defaults
+			dirDefaults,
+			langDefaults,
+			overrides
+		]);
+		populateInstanceComputableOptions(this.options);
+
+		this.viewSpecCache = {}; // somewhat unrelated
+	},
+
+
+	// Gets information about how to create a view. Will use a cache.
+	getViewSpec: function(viewType) {
+		var cache = this.viewSpecCache;
+
+		return cache[viewType] || (cache[viewType] = this.buildViewSpec(viewType));
+	},
+
+
+	// Given a duration singular unit, like "week" or "day", finds a matching view spec.
+	// Preference is given to views that have corresponding buttons.
+	getUnitViewSpec: function(unit) {
+		var viewTypes;
+		var i;
+		var spec;
+
+		if ($.inArray(unit, intervalUnits) != -1) {
+
+			// put views that have buttons first. there will be duplicates, but oh well
+			viewTypes = this.header.getViewsWithButtons();
+			$.each(FC.views, function(viewType) { // all views
+				viewTypes.push(viewType);
+			});
+
+			for (i = 0; i < viewTypes.length; i++) {
+				spec = this.getViewSpec(viewTypes[i]);
+				if (spec) {
+					if (spec.singleUnit == unit) {
+						return spec;
+					}
+				}
+			}
+		}
+	},
+
+
+	// Builds an object with information on how to create a given view
+	buildViewSpec: function(requestedViewType) {
+		var viewOverrides = this.overrides.views || {};
+		var specChain = []; // for the view. lowest to highest priority
+		var defaultsChain = []; // for the view. lowest to highest priority
+		var overridesChain = []; // for the view. lowest to highest priority
+		var viewType = requestedViewType;
+		var spec; // for the view
+		var overrides; // for the view
+		var duration;
+		var unit;
+
+		// iterate from the specific view definition to a more general one until we hit an actual View class
+		while (viewType) {
+			spec = fcViews[viewType];
+			overrides = viewOverrides[viewType];
+			viewType = null; // clear. might repopulate for another iteration
+
+			if (typeof spec === 'function') { // TODO: deprecate
+				spec = { 'class': spec };
+			}
+
+			if (spec) {
+				specChain.unshift(spec);
+				defaultsChain.unshift(spec.defaults || {});
+				duration = duration || spec.duration;
+				viewType = viewType || spec.type;
+			}
+
+			if (overrides) {
+				overridesChain.unshift(overrides); // view-specific option hashes have options at zero-level
+				duration = duration || overrides.duration;
+				viewType = viewType || overrides.type;
+			}
+		}
+
+		spec = mergeProps(specChain);
+		spec.type = requestedViewType;
+		if (!spec['class']) {
+			return false;
+		}
+
+		if (duration) {
+			duration = moment.duration(duration);
+			if (duration.valueOf()) { // valid?
+				spec.duration = duration;
+				unit = computeIntervalUnit(duration);
+
+				// view is a single-unit duration, like "week" or "day"
+				// incorporate options for this. lowest priority
+				if (duration.as(unit) === 1) {
+					spec.singleUnit = unit;
+					overridesChain.unshift(viewOverrides[unit] || {});
+				}
+			}
+		}
+
+		spec.defaults = mergeOptions(defaultsChain);
+		spec.overrides = mergeOptions(overridesChain);
+
+		this.buildViewSpecOptions(spec);
+		this.buildViewSpecButtonText(spec, requestedViewType);
+
+		return spec;
+	},
+
+
+	// Builds and assigns a view spec's options object from its already-assigned defaults and overrides
+	buildViewSpecOptions: function(spec) {
+		spec.options = mergeOptions([ // lowest to highest priority
+			Calendar.defaults, // global defaults
+			spec.defaults, // view's defaults (from ViewSubclass.defaults)
+			this.dirDefaults,
+			this.langDefaults, // locale and dir take precedence over view's defaults!
+			this.overrides, // calendar's overrides (options given to constructor)
+			spec.overrides // view's overrides (view-specific options)
+		]);
+		populateInstanceComputableOptions(spec.options);
+	},
+
+
+	// Computes and assigns a view spec's buttonText-related options
+	buildViewSpecButtonText: function(spec, requestedViewType) {
+
+		// given an options object with a possible `buttonText` hash, lookup the buttonText for the
+		// requested view, falling back to a generic unit entry like "week" or "day"
+		function queryButtonText(options) {
+			var buttonText = options.buttonText || {};
+			return buttonText[requestedViewType] ||
+				(spec.singleUnit ? buttonText[spec.singleUnit] : null);
+		}
+
+		// highest to lowest priority
+		spec.buttonTextOverride =
+			queryButtonText(this.overrides) || // constructor-specified buttonText lookup hash takes precedence
+			spec.overrides.buttonText; // `buttonText` for view-specific options is a string
+
+		// highest to lowest priority. mirrors buildViewSpecOptions
+		spec.buttonTextDefault =
+			queryButtonText(this.langDefaults) ||
+			queryButtonText(this.dirDefaults) ||
+			spec.defaults.buttonText || // a single string. from ViewSubclass.defaults
+			queryButtonText(Calendar.defaults) ||
+			(spec.duration ? this.humanizeDuration(spec.duration) : null) || // like "3 days"
+			requestedViewType; // fall back to given view name
+	},
+
+
+	// Given a view name for a custom view or a standard view, creates a ready-to-go View object
+	instantiateView: function(viewType) {
+		var spec = this.getViewSpec(viewType);
+
+		return new spec['class'](this, viewType, spec.options, spec.duration);
+	},
+
+
+	// Returns a boolean about whether the view is okay to instantiate at some point
+	isValidViewType: function(viewType) {
+		return Boolean(this.getViewSpec(viewType));
+	},
+
+
+	// Should be called when any type of async data fetching begins
+	pushLoading: function() {
+		if (!(this.loadingLevel++)) {
+			this.trigger('loading', null, true, this.view);
+		}
+	},
+
+
+	// Should be called when any type of async data fetching completes
+	popLoading: function() {
+		if (!(--this.loadingLevel)) {
+			this.trigger('loading', null, false, this.view);
+		}
+	},
+
+
+	// Given arguments to the select method in the API, returns a range
+	buildSelectRange: function(start, end) {
+
+		start = this.moment(start);
+		if (end) {
+			end = this.moment(end);
+		}
+		else if (start.hasTime()) {
+			end = start.clone().add(this.defaultTimedEventDuration);
+		}
+		else {
+			end = start.clone().add(this.defaultAllDayEventDuration);
+		}
+
+		return { start: start, end: end };
+	}
+
+});
+
+
+Calendar.mixin(Emitter);
+
+
+function Calendar_constructor(element, overrides) {
 	var t = this;
+
+
+	t.initOptions(overrides || {});
+	var options = this.options;
+
 	
-	
-	// exports
-	t.options = options;
+	// Exports
+	// -----------------------------------------------------------------------------------
+
 	t.render = render;
 	t.destroy = destroy;
 	t.refetchEvents = refetchEvents;
 	t.reportEvents = reportEvents;
 	t.reportEventChange = reportEventChange;
-	t.rerenderEvents = rerenderEvents;
-	t.changeView = changeView;
+	t.rerenderEvents = renderEvents; // `renderEvents` serves as a rerender. an API method
+	t.changeView = renderView; // `renderView` will switch to another view
 	t.select = select;
 	t.unselect = unselect;
 	t.prev = prev;
@@ -204,54 +8229,209 @@ function Calendar(element, options, eventSources) {
 	t.today = today;
 	t.gotoDate = gotoDate;
 	t.incrementDate = incrementDate;
-	t.formatDate = function(format, date) { return formatDate(format, date, options) };
-	t.formatDates = function(format, date1, date2) { return formatDates(format, date1, date2, options) };
+	t.zoomTo = zoomTo;
 	t.getDate = getDate;
+	t.getCalendar = getCalendar;
 	t.getView = getView;
 	t.option = option;
 	t.trigger = trigger;
+
+
+
+	// Language-data Internals
+	// -----------------------------------------------------------------------------------
+	// Apply overrides to the current language's data
+
+
+	var localeData = createObject( // make a cheap copy
+		getMomentLocaleData(options.lang) // will fall back to en
+	);
+
+	if (options.monthNames) {
+		localeData._months = options.monthNames;
+	}
+	if (options.monthNamesShort) {
+		localeData._monthsShort = options.monthNamesShort;
+	}
+	if (options.dayNames) {
+		localeData._weekdays = options.dayNames;
+	}
+	if (options.dayNamesShort) {
+		localeData._weekdaysShort = options.dayNamesShort;
+	}
+	if (options.firstDay != null) {
+		var _week = createObject(localeData._week); // _week: { dow: # }
+		_week.dow = options.firstDay;
+		localeData._week = _week;
+	}
+
+	// assign a normalized value, to be used by our .week() moment extension
+	localeData._fullCalendar_weekCalc = (function(weekCalc) {
+		if (typeof weekCalc === 'function') {
+			return weekCalc;
+		}
+		else if (weekCalc === 'local') {
+			return weekCalc;
+		}
+		else if (weekCalc === 'iso' || weekCalc === 'ISO') {
+			return 'ISO';
+		}
+	})(options.weekNumberCalculation);
+
+
+
+	// Calendar-specific Date Utilities
+	// -----------------------------------------------------------------------------------
+
+
+	t.defaultAllDayEventDuration = moment.duration(options.defaultAllDayEventDuration);
+	t.defaultTimedEventDuration = moment.duration(options.defaultTimedEventDuration);
+
+
+	// Builds a moment using the settings of the current calendar: timezone and language.
+	// Accepts anything the vanilla moment() constructor accepts.
+	t.moment = function() {
+		var mom;
+
+		if (options.timezone === 'local') {
+			mom = FC.moment.apply(null, arguments);
+
+			// Force the moment to be local, because FC.moment doesn't guarantee it.
+			if (mom.hasTime()) { // don't give ambiguously-timed moments a local zone
+				mom.local();
+			}
+		}
+		else if (options.timezone === 'UTC') {
+			mom = FC.moment.utc.apply(null, arguments); // process as UTC
+		}
+		else {
+			mom = FC.moment.parseZone.apply(null, arguments); // let the input decide the zone
+		}
+
+		if ('_locale' in mom) { // moment 2.8 and above
+			mom._locale = localeData;
+		}
+		else { // pre-moment-2.8
+			mom._lang = localeData;
+		}
+
+		return mom;
+	};
+
+
+	// Returns a boolean about whether or not the calendar knows how to calculate
+	// the timezone offset of arbitrary dates in the current timezone.
+	t.getIsAmbigTimezone = function() {
+		return options.timezone !== 'local' && options.timezone !== 'UTC';
+	};
+
+
+	// Returns a copy of the given date in the current timezone of it is ambiguously zoned.
+	// This will also give the date an unambiguous time.
+	t.rezoneDate = function(date) {
+		return t.moment(date.toArray());
+	};
+
+
+	// Returns a moment for the current date, as defined by the client's computer,
+	// or overridden by the `now` option.
+	t.getNow = function() {
+		var now = options.now;
+		if (typeof now === 'function') {
+			now = now();
+		}
+		return t.moment(now);
+	};
+
+
+	// Get an event's normalized end date. If not present, calculate it from the defaults.
+	t.getEventEnd = function(event) {
+		if (event.end) {
+			return event.end.clone();
+		}
+		else {
+			return t.getDefaultEventEnd(event.allDay, event.start);
+		}
+	};
+
+
+	// Given an event's allDay status and start date, return swhat its fallback end date should be.
+	t.getDefaultEventEnd = function(allDay, start) { // TODO: rename to computeDefaultEventEnd
+		var end = start.clone();
+
+		if (allDay) {
+			end.stripTime().add(t.defaultAllDayEventDuration);
+		}
+		else {
+			end.add(t.defaultTimedEventDuration);
+		}
+
+		if (t.getIsAmbigTimezone()) {
+			end.stripZone(); // we don't know what the tzo should be
+		}
+
+		return end;
+	};
+
+
+	// Produces a human-readable string for the given duration.
+	// Side-effect: changes the locale of the given duration.
+	t.humanizeDuration = function(duration) {
+		return (duration.locale || duration.lang).call(duration, options.lang) // works moment-pre-2.8
+			.humanize();
+	};
+
+
 	
-	
-	// imports
-	EventManager.call(t, options, eventSources);
+	// Imports
+	// -----------------------------------------------------------------------------------
+
+
+	EventManager.call(t, options);
 	var isFetchNeeded = t.isFetchNeeded;
 	var fetchEvents = t.fetchEvents;
-	
-	
-	// locals
+
+
+
+	// Locals
+	// -----------------------------------------------------------------------------------
+
+
 	var _element = element[0];
 	var header;
 	var headerElement;
 	var content;
 	var tm; // for making theme classes
-	var currentView;
-	var viewInstances = {};
-	var elementOuterWidth;
+	var currentView; // NOTE: keep this in sync with this.view
+	var viewsByType = {}; // holds all instantiated view instances, current or not
 	var suggestedViewHeight;
-	var absoluteViewElement;
-	var resizeUID = 0;
+	var windowResizeProxy; // wraps the windowResize function
 	var ignoreWindowResize = 0;
-	var date = new Date();
+	var date;
 	var events = [];
-	var _dragElement;
 	
 	
 	
-	/* Main Rendering
-	-----------------------------------------------------------------------------*/
-	
-	
-	setYMD(date, options.year, options.month, options.date);
+	// Main Rendering
+	// -----------------------------------------------------------------------------------
+
+
+	if (options.defaultDate != null) {
+		date = t.moment(options.defaultDate);
+	}
+	else {
+		date = t.getNow();
+	}
 	
 	
-	function render(inc) {
+	function render() {
 		if (!content) {
 			initialRender();
-		}else{
+		}
+		else if (elementVisible()) {
+			// mainly for the public API
 			calcSize();
-			markSizesDirty();
-			markEventsDirty();
-			renderView(inc);
+			renderView();
 		}
 	}
 	
@@ -259,197 +8439,169 @@ function Calendar(element, options, eventSources) {
 	function initialRender() {
 		tm = options.theme ? 'ui' : 'fc';
 		element.addClass('fc');
+
 		if (options.isRTL) {
 			element.addClass('fc-rtl');
 		}
 		else {
 			element.addClass('fc-ltr');
 		}
+
 		if (options.theme) {
 			element.addClass('ui-widget');
 		}
-		content = $("<div class='fc-content' style='position:relative'/>")
-			.prependTo(element);
-		header = new Header(t, options);
+		else {
+			element.addClass('fc-unthemed');
+		}
+
+		content = $("<div class='fc-view-container'/>").prependTo(element);
+
+		header = t.header = new Header(t, options);
 		headerElement = header.render();
 		if (headerElement) {
 			element.prepend(headerElement);
 		}
-		changeView(options.defaultView);
-		$(window).resize(windowResize);
-		// needed for IE in a 0x0 iframe, b/c when it is resized, never triggers a windowResize
-		if (!bodyVisible()) {
-			lateRender();
+
+		renderView(options.defaultView);
+
+		if (options.handleWindowResize) {
+			windowResizeProxy = debounce(windowResize, options.windowResizeDelay); // prevents rapid calls
+			$(window).resize(windowResizeProxy);
 		}
 	}
 	
 	
-	// called when we know the calendar couldn't be rendered when it was initialized,
-	// but we think it's ready now
-	function lateRender() {
-		setTimeout(function() { // IE7 needs this so dimensions are calculated correctly
-			if (!currentView.start && bodyVisible()) { // !currentView.start makes sure this never happens more than once
-				renderView();
-			}
-		},0);
-	}
-	
-	
 	function destroy() {
-		$(window).unbind('resize', windowResize);
-		header.destroy();
+
+		if (currentView) {
+			currentView.removeElement();
+
+			// NOTE: don't null-out currentView/t.view in case API methods are called after destroy.
+			// It is still the "current" view, just not rendered.
+		}
+
+		header.removeElement();
 		content.remove();
-		element.removeClass('fc fc-rtl ui-widget');
+		element.removeClass('fc fc-ltr fc-rtl fc-unthemed ui-widget');
+
+		if (windowResizeProxy) {
+			$(window).unbind('resize', windowResizeProxy);
+		}
 	}
 	
 	
-	
 	function elementVisible() {
-		return _element.offsetWidth !== 0;
+		return element.is(':visible');
 	}
 	
 	
-	function bodyVisible() {
-		return $('body')[0].offsetWidth !== 0;
-	}
-	
-	
-	
-	/* View Rendering
-	-----------------------------------------------------------------------------*/
-	
-	// TODO: improve view switching (still weird transition in IE, and FF has whiteout problem)
-	
-	function changeView(newViewName) {
-		if (!currentView || newViewName != currentView.name) {
-			ignoreWindowResize++; // because setMinHeight might change the height before render (and subsequently setSize) is reached
-
-			unselect();
-			
-			var oldView = currentView;
-			var newViewElement;
-				
-			if (oldView) {
-				(oldView.beforeHide || noop)(); // called before changing min-height. if called after, scroll state is reset (in Opera)
-				setMinHeight(content, content.height());
-				oldView.element.hide();
-			}else{
-				setMinHeight(content, 1); // needs to be 1 (not 0) for IE7, or else view dimensions miscalculated
-			}
-			content.css('overflow', 'hidden');
-			
-			currentView = viewInstances[newViewName];
-			if (currentView) {
-				currentView.element.show();
-			}else{
-				currentView = viewInstances[newViewName] = new fcViews[newViewName](
-					newViewElement = absoluteViewElement =
-						$("<div class='fc-view fc-view-" + newViewName + "' style='position:absolute'/>")
-							.appendTo(content),
-					t // the calendar object
-				);
-			}
-			
-			if (oldView) {
-				header.deactivateButton(oldView.name);
-			}
-			header.activateButton(newViewName);
-			
-			renderView(); // after height has been set, will make absoluteViewElement's position=relative, then set to null
-			
-			content.css('overflow', '');
-			if (oldView) {
-				setMinHeight(content, 1);
-			}
-			
-			if (!newViewElement) {
-				(currentView.afterShow || noop)(); // called after setting min-height/overflow, so in final scroll state (for Opera)
+
+	// View Rendering
+	// -----------------------------------------------------------------------------------
+
+
+	// Renders a view because of a date change, view-type change, or for the first time.
+	// If not given a viewType, keep the current view but render different dates.
+	function renderView(viewType) {
+		ignoreWindowResize++;
+
+		// if viewType is changing, remove the old view's rendering
+		if (currentView && viewType && currentView.type !== viewType) {
+			header.deactivateButton(currentView.type);
+			freezeContentHeight(); // prevent a scroll jump when view element is removed
+			currentView.removeElement();
+			currentView = t.view = null;
+		}
+
+		// if viewType changed, or the view was never created, create a fresh view
+		if (!currentView && viewType) {
+			currentView = t.view =
+				viewsByType[viewType] ||
+				(viewsByType[viewType] = t.instantiateView(viewType));
+
+			currentView.setElement(
+				$("<div class='fc-view fc-" + viewType + "-view' />").appendTo(content)
+			);
+			header.activateButton(viewType);
+		}
+
+		if (currentView) {
+
+			// in case the view should render a period of time that is completely hidden
+			date = currentView.massageCurrentDate(date);
+
+			// render or rerender the view
+			if (
+				!currentView.displaying ||
+				!date.isWithin(currentView.intervalStart, currentView.intervalEnd) // implicit date window change
+			) {
+				if (elementVisible()) {
+
+					freezeContentHeight();
+					currentView.display(date);
+					unfreezeContentHeight(); // immediately unfreeze regardless of whether display is async
+
+					// need to do this after View::render, so dates are calculated
+					updateHeaderTitle();
+					updateTodayButton();
+
+					getAndRenderEvents();
+				}
 			}
-			
-			ignoreWindowResize--;
 		}
+
+		unfreezeContentHeight(); // undo any lone freezeContentHeight calls
+		ignoreWindowResize--;
 	}
+
 	
+
+	// Resizing
+	// -----------------------------------------------------------------------------------
+
+
+	t.getSuggestedViewHeight = function() {
+		if (suggestedViewHeight === undefined) {
+			calcSize();
+		}
+		return suggestedViewHeight;
+	};
+
+
+	t.isHeightAuto = function() {
+		return options.contentHeight === 'auto' || options.height === 'auto';
+	};
 	
 	
-	function renderView(inc) {
+	function updateSize(shouldRecalc) {
 		if (elementVisible()) {
-			ignoreWindowResize++; // because renderEvents might temporarily change the height before setSize is reached
-
-			unselect();
-			
-			if (suggestedViewHeight === undefined) {
-				calcSize();
-			}
-			
-			var forceEventRender = false;
-			if (!currentView.start || inc || date < currentView.start || date >= currentView.end) {
-				// view must render an entire new date range (and refetch/render events)
-				currentView.render(date, inc || 0); // responsible for clearing events
-				setSize(true);
-				forceEventRender = true;
-			}
-			else if (currentView.sizeDirty) {
-				// view must resize (and rerender events)
-				currentView.clearEvents();
-				setSize();
-				forceEventRender = true;
-			}
-			else if (currentView.eventsDirty) {
-				currentView.clearEvents();
-				forceEventRender = true;
-			}
-			currentView.sizeDirty = false;
-			currentView.eventsDirty = false;
-			updateEvents(forceEventRender);
-			
-			elementOuterWidth = element.outerWidth();
-			
-			header.updateTitle(currentView.title);
-			var today = new Date();
-			if (today >= currentView.start && today < currentView.end) {
-				header.disableButton('today');
-			}else{
-				header.enableButton('today');
+
+			if (shouldRecalc) {
+				_calcSize();
 			}
-			
+
+			ignoreWindowResize++;
+			currentView.updateSize(true); // isResize=true. will poll getSuggestedViewHeight() and isHeightAuto()
 			ignoreWindowResize--;
-			currentView.trigger('viewDisplay', _element);
+
+			return true; // signal success
 		}
 	}
-	
-	
-	
-	/* Resizing
-	-----------------------------------------------------------------------------*/
-	
-	
-	function updateSize() {
-		markSizesDirty();
+
+
+	function calcSize() {
 		if (elementVisible()) {
-			calcSize();
-			setSize();
-			unselect();
-			currentView.clearEvents();
-			currentView.renderEvents(events);
-			currentView.sizeDirty = false;
+			_calcSize();
 		}
 	}
 	
 	
-	function markSizesDirty() {
-		$.each(viewInstances, function(i, inst) {
-			inst.sizeDirty = true;
-		});
-	}
-	
-	
-	function calcSize() {
-		if (options.contentHeight) {
+	function _calcSize() { // assumes elementVisible
+		if (typeof options.contentHeight === 'number') { // exists and not 'auto'
 			suggestedViewHeight = options.contentHeight;
 		}
-		else if (options.height) {
-			suggestedViewHeight = options.height - (headerElement ? headerElement.height() : 0) - vsides(content);
+		else if (typeof options.height === 'number') { // exists and not 'auto'
+			suggestedViewHeight = options.height - (headerElement ? headerElement.outerHeight(true) : 0);
 		}
 		else {
 			suggestedViewHeight = Math.round(content.width() / Math.max(options.aspectRatio, .5));
@@ -457,35 +8609,14 @@ function Calendar(element, options, eventSources) {
 	}
 	
 	
-	function setSize(dateChanged) { // todo: dateChanged?
-		ignoreWindowResize++;
-		currentView.setHeight(suggestedViewHeight, dateChanged);
-		if (absoluteViewElement) {
-			absoluteViewElement.css('position', 'relative');
-			absoluteViewElement = null;
-		}
-		currentView.setWidth(content.width(), dateChanged);
-		ignoreWindowResize--;
-	}
-	
-	
-	function windowResize() {
-		if (!ignoreWindowResize) {
-			if (currentView.start) { // view has already been rendered
-				var uid = ++resizeUID;
-				setTimeout(function() { // add a delay
-					if (uid == resizeUID && !ignoreWindowResize && elementVisible()) {
-						if (elementOuterWidth != (elementOuterWidth = element.outerWidth())) {
-							ignoreWindowResize++; // in case the windowResize callback changes the height
-							updateSize();
-							currentView.trigger('windowResize', _element);
-							ignoreWindowResize--;
-						}
-					}
-				}, 200);
-			}else{
-				// calendar must have been initialized in a 0x0 iframe that has just been resized
-				lateRender();
+	function windowResize(ev) {
+		if (
+			!ignoreWindowResize &&
+			ev.target === window && // so we don't process jqui "resize" events that have bubbled up
+			currentView.start // view has already been rendered
+		) {
+			if (updateSize(true)) {
+				currentView.trigger('windowResize', _element);
 			}
 		}
 	}
@@ -494,52 +8625,79 @@ function Calendar(element, options, eventSources) {
 	
 	/* Event Fetching/Rendering
 	-----------------------------------------------------------------------------*/
+	// TODO: going forward, most of this stuff should be directly handled by the view
+
+
+	function refetchEvents() { // can be called as an API method
+		destroyEvents(); // so that events are cleared before user starts waiting for AJAX
+		fetchAndRenderEvents();
+	}
+
+
+	function renderEvents() { // destroys old events if previously rendered
+		if (elementVisible()) {
+			freezeContentHeight();
+			currentView.displayEvents(events);
+			unfreezeContentHeight();
+		}
+	}
+
+
+	function destroyEvents() {
+		freezeContentHeight();
+		currentView.clearEvents();
+		unfreezeContentHeight();
+	}
 	
-	
-	// fetches events if necessary, rerenders events if necessary (or if forced)
-	function updateEvents(forceRender) {
-		if (!options.lazyFetching || isFetchNeeded(currentView.visStart, currentView.visEnd)) {
-			refetchEvents();
+
+	function getAndRenderEvents() {
+		if (!options.lazyFetching || isFetchNeeded(currentView.start, currentView.end)) {
+			fetchAndRenderEvents();
 		}
-		else if (forceRender) {
-			rerenderEvents();
+		else {
+			renderEvents();
 		}
 	}
-	
-	
-	function refetchEvents() {
-		fetchEvents(currentView.visStart, currentView.visEnd); // will call reportEvents
+
+
+	function fetchAndRenderEvents() {
+		fetchEvents(currentView.start, currentView.end);
+			// ... will call reportEvents
+			// ... which will call renderEvents
 	}
-	
+
 	
 	// called when event data arrives
 	function reportEvents(_events) {
 		events = _events;
-		rerenderEvents();
+		renderEvents();
 	}
-	
-	
+
+
 	// called when a single event's data has been changed
-	function reportEventChange(eventID) {
-		rerenderEvents(eventID);
+	function reportEventChange() {
+		renderEvents();
 	}
-	
-	
-	// attempts to rerenderEvents
-	function rerenderEvents(modifiedEventID) {
-		markEventsDirty();
-		if (elementVisible()) {
-			currentView.clearEvents();
-			currentView.renderEvents(events, modifiedEventID);
-			currentView.eventsDirty = false;
-		}
+
+
+
+	/* Header Updating
+	-----------------------------------------------------------------------------*/
+
+
+	function updateHeaderTitle() {
+		header.updateTitle(currentView.title);
 	}
-	
-	
-	function markEventsDirty() {
-		$.each(viewInstances, function(i, inst) {
-			inst.eventsDirty = true;
-		});
+
+
+	function updateTodayButton() {
+		var now = t.getNow();
+		if (now.isWithin(currentView.intervalStart, currentView.intervalEnd)) {
+			header.disableButton('today');
+		}
+		else {
+			header.enableButton('today');
+		}
 	}
 	
 
@@ -548,8 +8706,10 @@ function Calendar(element, options, eventSources) {
 	-----------------------------------------------------------------------------*/
 	
 
-	function select(start, end, allDay) {
-		currentView.select(start, end, allDay===undefined ? true : allDay);
+	function select(start, end) {
+		currentView.select(
+			t.buildSelectRange.apply(t, arguments)
+		);
 	}
 	
 
@@ -566,59 +8726,86 @@ function Calendar(element, options, eventSources) {
 	
 	
 	function prev() {
-		renderView(-1);
+		date = currentView.computePrevDate(date);
+		renderView();
 	}
 	
 	
 	function next() {
-		renderView(1);
+		date = currentView.computeNextDate(date);
+		renderView();
 	}
 	
 	
 	function prevYear() {
-		addYears(date, -1);
+		date.add(-1, 'years');
 		renderView();
 	}
 	
 	
 	function nextYear() {
-		addYears(date, 1);
+		date.add(1, 'years');
 		renderView();
 	}
 	
 	
 	function today() {
-		date = new Date();
+		date = t.getNow();
 		renderView();
 	}
 	
 	
-	function gotoDate(year, month, dateOfMonth) {
-		if (year instanceof Date) {
-			date = cloneDate(year); // provided 1 argument, a Date
-		}else{
-			setYMD(date, year, month, dateOfMonth);
-		}
+	function gotoDate(dateInput) {
+		date = t.moment(dateInput);
 		renderView();
 	}
 	
 	
-	function incrementDate(years, months, days) {
-		if (years !== undefined) {
-			addYears(date, years);
-		}
-		if (months !== undefined) {
-			addMonths(date, months);
-		}
-		if (days !== undefined) {
-			addDays(date, days);
-		}
+	function incrementDate(delta) {
+		date.add(moment.duration(delta));
 		renderView();
 	}
+
+
+	// Forces navigation to a view for the given date.
+	// `viewType` can be a specific view name or a generic one like "week" or "day".
+	function zoomTo(newDate, viewType) {
+		var spec;
+
+		viewType = viewType || 'day'; // day is default zoom
+		spec = t.getViewSpec(viewType) || t.getUnitViewSpec(viewType);
+
+		date = newDate;
+		renderView(spec ? spec.type : null);
+	}
 	
 	
 	function getDate() {
-		return cloneDate(date);
+		return date.clone();
+	}
+
+
+
+	/* Height "Freezing"
+	-----------------------------------------------------------------------------*/
+	// TODO: move this into the view
+
+
+	function freezeContentHeight() {
+		content.css({
+			width: '100%',
+			height: content.height(),
+			overflow: 'hidden'
+		});
+	}
+
+
+	function unfreezeContentHeight() {
+		content.css({
+			width: '',
+			height: '',
+			overflow: ''
+		});
 	}
 	
 	
@@ -626,6 +8813,11 @@ function Calendar(element, options, eventSources) {
 	/* Misc
 	-----------------------------------------------------------------------------*/
 	
+
+	function getCalendar() {
+		return t;
+	}
+
 	
 	function getView() {
 		return currentView;
@@ -638,213 +8830,596 @@ function Calendar(element, options, eventSources) {
 		}
 		if (name == 'height' || name == 'contentHeight' || name == 'aspectRatio') {
 			options[name] = value;
-			updateSize();
+			updateSize(true); // true = allow recalculation of height
 		}
 	}
 	
 	
-	function trigger(name, thisObj) {
+	function trigger(name, thisObj) { // overrides the Emitter's trigger method :(
+		var args = Array.prototype.slice.call(arguments, 2);
+
+		thisObj = thisObj || _element;
+		this.triggerWith(name, thisObj, args); // Emitter's method
+
 		if (options[name]) {
-			return options[name].apply(
-				thisObj || _element,
-				Array.prototype.slice.call(arguments, 2)
-			);
+			return options[name].apply(thisObj, args);
 		}
 	}
+
+	t.initialize();
+}
+
+;;
+
+Calendar.defaults = {
+
+	titleRangeSeparator: ' \u2014 ', // emphasized dash
+	monthYearFormat: 'MMMM YYYY', // required for en. other languages rely on datepicker computable option
+
+	defaultTimedEventDuration: '02:00:00',
+	defaultAllDayEventDuration: { days: 1 },
+	forceEventDuration: false,
+	nextDayThreshold: '09:00:00', // 9am
+
+	// display
+	defaultView: 'month',
+	aspectRatio: 1.35,
+	header: {
+		left: 'title',
+		center: '',
+		right: 'today prev,next'
+	},
+	weekends: true,
+	weekNumbers: false,
+
+	weekNumberTitle: 'W',
+	weekNumberCalculation: 'local',
 	
+	//editable: false,
+
+	scrollTime: '06:00:00',
 	
+	// event ajax
+	lazyFetching: true,
+	startParam: 'start',
+	endParam: 'end',
+	timezoneParam: 'timezone',
+
+	timezone: false,
+
+	//allDayDefault: undefined,
+
+	// locale
+	isRTL: false,
+	buttonText: {
+		prev: "prev",
+		next: "next",
+		prevYear: "prev year",
+		nextYear: "next year",
+		year: 'year', // TODO: locale files need to specify this
+		today: 'today',
+		month: 'month',
+		week: 'week',
+		day: 'day'
+	},
+
+	buttonIcons: {
+		prev: 'left-single-arrow',
+		next: 'right-single-arrow',
+		prevYear: 'left-double-arrow',
+		nextYear: 'right-double-arrow'
+	},
 	
-	/* External Dragging
-	------------------------------------------------------------------------*/
+	// jquery-ui theming
+	theme: false,
+	themeButtonIcons: {
+		prev: 'circle-triangle-w',
+		next: 'circle-triangle-e',
+		prevYear: 'seek-prev',
+		nextYear: 'seek-next'
+	},
+
+	//eventResizableFromStart: false,
+	dragOpacity: .75,
+	dragRevertDuration: 500,
+	dragScroll: true,
 	
-	if (options.droppable) {
-		$(document)
-			.bind('dragstart', function(ev, ui) {
-				var _e = ev.target;
-				var e = $(_e);
-				if (!e.parents('.fc').length) { // not already inside a calendar
-					var accept = options.dropAccept;
-					if ($.isFunction(accept) ? accept.call(_e, e) : e.is(accept)) {
-						_dragElement = _e;
-						currentView.dragStart(_dragElement, ev, ui);
-					}
-				}
-			})
-			.bind('dragstop', function(ev, ui) {
-				if (_dragElement) {
-					currentView.dragStop(_dragElement, ev, ui);
-					_dragElement = null;
-				}
-			});
-	}
+	//selectable: false,
+	unselectAuto: true,
+	
+	dropAccept: '*',
+
+	eventOrder: 'title',
+
+	eventLimit: false,
+	eventLimitText: 'more',
+	eventLimitClick: 'popover',
+	dayPopoverFormat: 'LL',
+	
+	handleWindowResize: true,
+	windowResizeDelay: 200 // milliseconds before an updateSize happens
 	
+};
+
+
+Calendar.englishDefaults = { // used by lang.js
+	dayPopoverFormat: 'dddd, MMMM D'
+};
+
+
+Calendar.rtlDefaults = { // right-to-left defaults
+	header: { // TODO: smarter solution (first/center/last ?)
+		left: 'next,prev today',
+		center: '',
+		right: 'title'
+	},
+	buttonIcons: {
+		prev: 'right-single-arrow',
+		next: 'left-single-arrow',
+		prevYear: 'right-double-arrow',
+		nextYear: 'left-double-arrow'
+	},
+	themeButtonIcons: {
+		prev: 'circle-triangle-e',
+		next: 'circle-triangle-w',
+		nextYear: 'seek-prev',
+		prevYear: 'seek-next'
+	}
+};
+
+;;
+
+var langOptionHash = FC.langs = {}; // initialize and expose
+
+
+// TODO: document the structure and ordering of a FullCalendar lang file
+// TODO: rename everything "lang" to "locale", like what the moment project did
+
+
+// Initialize jQuery UI datepicker translations while using some of the translations
+// Will set this as the default language for datepicker.
+FC.datepickerLang = function(langCode, dpLangCode, dpOptions) {
+
+	// get the FullCalendar internal option hash for this language. create if necessary
+	var fcOptions = langOptionHash[langCode] || (langOptionHash[langCode] = {});
+
+	// transfer some simple options from datepicker to fc
+	fcOptions.isRTL = dpOptions.isRTL;
+	fcOptions.weekNumberTitle = dpOptions.weekHeader;
+
+	// compute some more complex options from datepicker
+	$.each(dpComputableOptions, function(name, func) {
+		fcOptions[name] = func(dpOptions);
+	});
+
+	// is jQuery UI Datepicker is on the page?
+	if ($.datepicker) {
+
+		// Register the language data.
+		// FullCalendar and MomentJS use language codes like "pt-br" but Datepicker
+		// does it like "pt-BR" or if it doesn't have the language, maybe just "pt".
+		// Make an alias so the language can be referenced either way.
+		$.datepicker.regional[dpLangCode] =
+			$.datepicker.regional[langCode] = // alias
+				dpOptions;
+
+		// Alias 'en' to the default language data. Do this every time.
+		$.datepicker.regional.en = $.datepicker.regional[''];
+
+		// Set as Datepicker's global defaults.
+		$.datepicker.setDefaults(dpOptions);
+	}
+};
+
+
+// Sets FullCalendar-specific translations. Will set the language as the global default.
+FC.lang = function(langCode, newFcOptions) {
+	var fcOptions;
+	var momOptions;
+
+	// get the FullCalendar internal option hash for this language. create if necessary
+	fcOptions = langOptionHash[langCode] || (langOptionHash[langCode] = {});
 
+	// provided new options for this language? merge them in
+	if (newFcOptions) {
+		fcOptions = langOptionHash[langCode] = mergeOptions([ fcOptions, newFcOptions ]);
+	}
+
+	// compute language options that weren't defined.
+	// always do this. newFcOptions can be undefined when initializing from i18n file,
+	// so no way to tell if this is an initialization or a default-setting.
+	momOptions = getMomentLocaleData(langCode); // will fall back to en
+	$.each(momComputableOptions, function(name, func) {
+		if (fcOptions[name] == null) {
+			fcOptions[name] = func(momOptions, fcOptions);
+		}
+	});
+
+	// set it as the default language for FullCalendar
+	Calendar.defaults.lang = langCode;
+};
+
+
+// NOTE: can't guarantee any of these computations will run because not every language has datepicker
+// configs, so make sure there are English fallbacks for these in the defaults file.
+var dpComputableOptions = {
+
+	buttonText: function(dpOptions) {
+		return {
+			// the translations sometimes wrongly contain HTML entities
+			prev: stripHtmlEntities(dpOptions.prevText),
+			next: stripHtmlEntities(dpOptions.nextText),
+			today: stripHtmlEntities(dpOptions.currentText)
+		};
+	},
+
+	// Produces format strings like "MMMM YYYY" -> "September 2014"
+	monthYearFormat: function(dpOptions) {
+		return dpOptions.showMonthAfterYear ?
+			'YYYY[' + dpOptions.yearSuffix + '] MMMM' :
+			'MMMM YYYY[' + dpOptions.yearSuffix + ']';
+	}
+
+};
+
+var momComputableOptions = {
+
+	// Produces format strings like "ddd M/D" -> "Fri 9/15"
+	dayOfMonthFormat: function(momOptions, fcOptions) {
+		var format = momOptions.longDateFormat('l'); // for the format like "M/D/YYYY"
+
+		// strip the year off the edge, as well as other misc non-whitespace chars
+		format = format.replace(/^Y+[^\w\s]*|[^\w\s]*Y+$/g, '');
+
+		if (fcOptions.isRTL) {
+			format += ' ddd'; // for RTL, add day-of-week to end
+		}
+		else {
+			format = 'ddd ' + format; // for LTR, add day-of-week to beginning
+		}
+		return format;
+	},
+
+	// Produces format strings like "h:mma" -> "6:00pm"
+	mediumTimeFormat: function(momOptions) { // can't be called `timeFormat` because collides with option
+		return momOptions.longDateFormat('LT')
+			.replace(/\s*a$/i, 'a'); // convert AM/PM/am/pm to lowercase. remove any spaces beforehand
+	},
+
+	// Produces format strings like "h(:mm)a" -> "6pm" / "6:30pm"
+	smallTimeFormat: function(momOptions) {
+		return momOptions.longDateFormat('LT')
+			.replace(':mm', '(:mm)')
+			.replace(/(\Wmm)$/, '($1)') // like above, but for foreign langs
+			.replace(/\s*a$/i, 'a'); // convert AM/PM/am/pm to lowercase. remove any spaces beforehand
+	},
+
+	// Produces format strings like "h(:mm)t" -> "6p" / "6:30p"
+	extraSmallTimeFormat: function(momOptions) {
+		return momOptions.longDateFormat('LT')
+			.replace(':mm', '(:mm)')
+			.replace(/(\Wmm)$/, '($1)') // like above, but for foreign langs
+			.replace(/\s*a$/i, 't'); // convert to AM/PM/am/pm to lowercase one-letter. remove any spaces beforehand
+	},
+
+	// Produces format strings like "ha" / "H" -> "6pm" / "18"
+	hourFormat: function(momOptions) {
+		return momOptions.longDateFormat('LT')
+			.replace(':mm', '')
+			.replace(/(\Wmm)$/, '') // like above, but for foreign langs
+			.replace(/\s*a$/i, 'a'); // convert AM/PM/am/pm to lowercase. remove any spaces beforehand
+	},
+
+	// Produces format strings like "h:mm" -> "6:30" (with no AM/PM)
+	noMeridiemTimeFormat: function(momOptions) {
+		return momOptions.longDateFormat('LT')
+			.replace(/\s*a$/i, ''); // remove trailing AM/PM
+	}
+
+};
+
+
+// options that should be computed off live calendar options (considers override options)
+// TODO: best place for this? related to lang?
+// TODO: flipping text based on isRTL is a bad idea because the CSS `direction` might want to handle it
+var instanceComputableOptions = {
+
+	// Produces format strings for results like "Mo 16"
+	smallDayDateFormat: function(options) {
+		return options.isRTL ?
+			'D dd' :
+			'dd D';
+	},
+
+	// Produces format strings for results like "Wk 5"
+	weekFormat: function(options) {
+		return options.isRTL ?
+			'w[ ' + options.weekNumberTitle + ']' :
+			'[' + options.weekNumberTitle + ' ]w';
+	},
+
+	// Produces format strings for results like "Wk5"
+	smallWeekFormat: function(options) {
+		return options.isRTL ?
+			'w[' + options.weekNumberTitle + ']' :
+			'[' + options.weekNumberTitle + ']w';
+	}
+
+};
+
+function populateInstanceComputableOptions(options) {
+	$.each(instanceComputableOptions, function(name, func) {
+		if (options[name] == null) {
+			options[name] = func(options);
+		}
+	});
 }
 
+
+// Returns moment's internal locale data. If doesn't exist, returns English.
+// Works with moment-pre-2.8
+function getMomentLocaleData(langCode) {
+	var func = moment.localeData || moment.langData;
+	return func.call(moment, langCode) ||
+		func.call(moment, 'en'); // the newer localData could return null, so fall back to en
+}
+
+
+// Initialize English by forcing computation of moment-derived options.
+// Also, sets it as the default.
+FC.lang('en', Calendar.englishDefaults);
+
 ;;
 
+/* Top toolbar area with buttons and title
+----------------------------------------------------------------------------------------------------------------------*/
+// TODO: rename all header-related things to "toolbar"
+
 function Header(calendar, options) {
 	var t = this;
 	
-	
 	// exports
 	t.render = render;
-	t.destroy = destroy;
+	t.removeElement = removeElement;
 	t.updateTitle = updateTitle;
 	t.activateButton = activateButton;
 	t.deactivateButton = deactivateButton;
 	t.disableButton = disableButton;
 	t.enableButton = enableButton;
-	
+	t.getViewsWithButtons = getViewsWithButtons;
 	
 	// locals
-	var element = $([]);
+	var el = $();
+	var viewsWithButtons = [];
 	var tm;
-	
 
 
 	function render() {
-		tm = options.theme ? 'ui' : 'fc';
 		var sections = options.header;
+
+		tm = options.theme ? 'ui' : 'fc';
+
 		if (sections) {
-			element = $("<table class='fc-header' style='width:100%'/>")
-				.append(
-					$("<tr/>")
-						.append(renderSection('left'))
-						.append(renderSection('center'))
-						.append(renderSection('right'))
-				);
-			return element;
+			el = $("<div class='fc-toolbar'/>")
+				.append(renderSection('left'))
+				.append(renderSection('right'))
+				.append(renderSection('center'))
+				.append('<div class="fc-clear"/>');
+
+			return el;
 		}
 	}
 	
 	
-	function destroy() {
-		element.remove();
+	function removeElement() {
+		el.remove();
+		el = $();
 	}
 	
 	
 	function renderSection(position) {
-		var e = $("<td class='fc-header-" + position + "'/>");
+		var sectionEl = $('<div class="fc-' + position + '"/>');
 		var buttonStr = options.header[position];
+
 		if (buttonStr) {
 			$.each(buttonStr.split(' '), function(i) {
-				if (i > 0) {
-					e.append("<span class='fc-header-space'/>");
-				}
-				var prevButton;
+				var groupChildren = $();
+				var isOnlyButtons = true;
+				var groupEl;
+
 				$.each(this.split(','), function(j, buttonName) {
+					var customButtonProps;
+					var viewSpec;
+					var buttonClick;
+					var overrideText; // text explicitly set by calendar's constructor options. overcomes icons
+					var defaultText;
+					var themeIcon;
+					var normalIcon;
+					var innerHtml;
+					var classes;
+					var button; // the element
+
 					if (buttonName == 'title') {
-						e.append("<span class='fc-header-title'><h2>&nbsp;</h2></span>");
-						if (prevButton) {
-							prevButton.addClass(tm + '-corner-right');
-						}
-						prevButton = null;
-					}else{
-						var buttonClick;
-						if (calendar[buttonName]) {
-							buttonClick = calendar[buttonName]; // calendar method
+						groupChildren = groupChildren.add($('<h2>&nbsp;</h2>')); // we always want it to take up height
+						isOnlyButtons = false;
+					}
+					else {
+						if ((customButtonProps = (calendar.options.customButtons || {})[buttonName])) {
+							buttonClick = function(ev) {
+								if (customButtonProps.click) {
+									customButtonProps.click.call(button[0], ev);
+								}
+							};
+							overrideText = ''; // icons will override text
+							defaultText = customButtonProps.text;
 						}
-						else if (fcViews[buttonName]) {
+						else if ((viewSpec = calendar.getViewSpec(buttonName))) {
 							buttonClick = function() {
-								button.removeClass(tm + '-state-hover'); // forget why
 								calendar.changeView(buttonName);
 							};
+							viewsWithButtons.push(buttonName);
+							overrideText = viewSpec.buttonTextOverride;
+							defaultText = viewSpec.buttonTextDefault;
 						}
+						else if (calendar[buttonName]) { // a calendar method
+							buttonClick = function() {
+								calendar[buttonName]();
+							};
+							overrideText = (calendar.overrides.buttonText || {})[buttonName];
+							defaultText = options.buttonText[buttonName]; // everything else is considered default
+						}
+
 						if (buttonClick) {
-							var icon = options.theme ? smartProperty(options.buttonIcons, buttonName) : null; // why are we using smartProperty here?
-							var text = smartProperty(options.buttonText, buttonName); // why are we using smartProperty here?
-							var button = $(
-								"<span class='fc-button fc-button-" + buttonName + " " + tm + "-state-default'>" +
-									(icon ?
-										"<span class='fc-icon-wrap'>" +
-											"<span class='ui-icon ui-icon-" + icon + "'/>" +
-										"</span>" :
-										text
-										) +
-								"</span>"
+
+							themeIcon =
+								customButtonProps ?
+									customButtonProps.themeIcon :
+									options.themeButtonIcons[buttonName];
+
+							normalIcon =
+								customButtonProps ?
+									customButtonProps.icon :
+									options.buttonIcons[buttonName];
+
+							if (overrideText) {
+								innerHtml = htmlEscape(overrideText);
+							}
+							else if (themeIcon && options.theme) {
+								innerHtml = "<span class='ui-icon ui-icon-" + themeIcon + "'></span>";
+							}
+							else if (normalIcon && !options.theme) {
+								innerHtml = "<span class='fc-icon fc-icon-" + normalIcon + "'></span>";
+							}
+							else {
+								innerHtml = htmlEscape(defaultText);
+							}
+
+							classes = [
+								'fc-' + buttonName + '-button',
+								tm + '-button',
+								tm + '-state-default'
+							];
+
+							button = $( // type="button" so that it doesn't submit a form
+								'<button type="button" class="' + classes.join(' ') + '">' +
+									innerHtml +
+								'</button>'
 								)
-								.click(function() {
+								.click(function(ev) {
+									// don't process clicks for disabled buttons
 									if (!button.hasClass(tm + '-state-disabled')) {
-										buttonClick();
+
+										buttonClick(ev);
+
+										// after the click action, if the button becomes the "active" tab, or disabled,
+										// it should never have a hover class, so remove it now.
+										if (
+											button.hasClass(tm + '-state-active') ||
+											button.hasClass(tm + '-state-disabled')
+										) {
+											button.removeClass(tm + '-state-hover');
+										}
 									}
 								})
 								.mousedown(function() {
+									// the *down* effect (mouse pressed in).
+									// only on buttons that are not the "active" tab, or disabled
 									button
 										.not('.' + tm + '-state-active')
 										.not('.' + tm + '-state-disabled')
 										.addClass(tm + '-state-down');
 								})
 								.mouseup(function() {
+									// undo the *down* effect
 									button.removeClass(tm + '-state-down');
 								})
 								.hover(
 									function() {
+										// the *hover* effect.
+										// only on buttons that are not the "active" tab, or disabled
 										button
 											.not('.' + tm + '-state-active')
 											.not('.' + tm + '-state-disabled')
 											.addClass(tm + '-state-hover');
 									},
 									function() {
+										// undo the *hover* effect
 										button
 											.removeClass(tm + '-state-hover')
-											.removeClass(tm + '-state-down');
+											.removeClass(tm + '-state-down'); // if mouseleave happens before mouseup
 									}
-								)
-								.appendTo(e);
-							disableTextSelection(button);
-							if (!prevButton) {
-								button.addClass(tm + '-corner-left');
-							}
-							prevButton = button;
+								);
+
+							groupChildren = groupChildren.add(button);
 						}
 					}
 				});
-				if (prevButton) {
-					prevButton.addClass(tm + '-corner-right');
+
+				if (isOnlyButtons) {
+					groupChildren
+						.first().addClass(tm + '-corner-left').end()
+						.last().addClass(tm + '-corner-right').end();
+				}
+
+				if (groupChildren.length > 1) {
+					groupEl = $('<div/>');
+					if (isOnlyButtons) {
+						groupEl.addClass('fc-button-group');
+					}
+					groupEl.append(groupChildren);
+					sectionEl.append(groupEl);
+				}
+				else {
+					sectionEl.append(groupChildren); // 1 or 0 children
 				}
 			});
 		}
-		return e;
+
+		return sectionEl;
 	}
 	
 	
-	function updateTitle(html) {
-		element.find('h2')
-			.html(html);
+	function updateTitle(text) {
+		el.find('h2').text(text);
 	}
 	
 	
 	function activateButton(buttonName) {
-		element.find('span.fc-button-' + buttonName)
+		el.find('.fc-' + buttonName + '-button')
 			.addClass(tm + '-state-active');
 	}
 	
 	
 	function deactivateButton(buttonName) {
-		element.find('span.fc-button-' + buttonName)
+		el.find('.fc-' + buttonName + '-button')
 			.removeClass(tm + '-state-active');
 	}
 	
 	
 	function disableButton(buttonName) {
-		element.find('span.fc-button-' + buttonName)
+		el.find('.fc-' + buttonName + '-button')
+			.attr('disabled', 'disabled')
 			.addClass(tm + '-state-disabled');
 	}
 	
 	
 	function enableButton(buttonName) {
-		element.find('span.fc-button-' + buttonName)
+		el.find('.fc-' + buttonName + '-button')
+			.removeAttr('disabled')
 			.removeClass(tm + '-state-disabled');
 	}
 
 
+	function getViewsWithButtons() {
+		return viewsWithButtons;
+	}
+
 }
 
 ;;
 
-fc.sourceNormalizers = [];
-fc.sourceFetchers = [];
+FC.sourceNormalizers = [];
+FC.sourceFetchers = [];
 
 var ajaxDefaults = {
 	dataType: 'json',
@@ -854,7 +9429,7 @@ var ajaxDefaults = {
 var eventGUID = 1;
 
 
-function EventManager(options, _sources) {
+function EventManager(options) { // assumed to be a calendar
 	var t = this;
 	
 	
@@ -867,12 +9442,13 @@ function EventManager(options, _sources) {
 	t.renderEvent = renderEvent;
 	t.removeEvents = removeEvents;
 	t.clientEvents = clientEvents;
-	t.normalizeEvent = normalizeEvent;
+	t.mutateEvent = mutateEvent;
+	t.normalizeEventRange = normalizeEventRange;
+	t.normalizeEventRangeTimes = normalizeEventRangeTimes;
+	t.ensureVisibleEventRange = ensureVisibleEventRange;
 	
 	
 	// imports
-	var trigger = t.trigger;
-	var getView = t.getView;
 	var reportEvents = t.reportEvents;
 	
 	
@@ -882,13 +9458,18 @@ function EventManager(options, _sources) {
 	var rangeStart, rangeEnd;
 	var currentFetchID = 0;
 	var pendingSourceCnt = 0;
-	var loadingLevel = 0;
-	var cache = [];
-	
-	
-	for (var i=0; i<_sources.length; i++) {
-		_addEventSource(_sources[i]);
-	}
+	var cache = []; // holds events that have already been expanded
+
+
+	$.each(
+		(options.events ? [ options.events ] : []).concat(options.eventSources || []),
+		function(i, sourceInput) {
+			var source = buildEventSource(sourceInput);
+			if (source) {
+				sources.push(source);
+			}
+		}
+	);
 	
 	
 	
@@ -897,7 +9478,10 @@ function EventManager(options, _sources) {
 	
 	
 	function isFetchNeeded(start, end) {
-		return !rangeStart || start < rangeStart || end > rangeEnd;
+		return !rangeStart || // nothing has been fetched yet?
+			// or, a part of the new range is outside of the old range? (after normalizing)
+			start.clone().stripZone() < rangeStart.clone().stripZone() ||
+			end.clone().stripZone() > rangeEnd.clone().stripZone();
 	}
 	
 	
@@ -915,25 +9499,33 @@ function EventManager(options, _sources) {
 	
 	
 	function fetchEventSource(source, fetchID) {
-		_fetchEventSource(source, function(events) {
+		_fetchEventSource(source, function(eventInputs) {
+			var isArraySource = $.isArray(source.events);
+			var i, eventInput;
+			var abstractEvent;
+
 			if (fetchID == currentFetchID) {
-				if (events) {
 
-					if (options.eventDataTransform) {
-						events = $.map(events, options.eventDataTransform);
-					}
-					if (source.eventDataTransform) {
-						events = $.map(events, source.eventDataTransform);
-					}
-					// TODO: this technique is not ideal for static array event sources.
-					//  For arrays, we'll want to process all events right in the beginning, then never again.
-				
-					for (var i=0; i<events.length; i++) {
-						events[i].source = source;
-						normalizeEvent(events[i]);
+				if (eventInputs) {
+					for (i = 0; i < eventInputs.length; i++) {
+						eventInput = eventInputs[i];
+
+						if (isArraySource) { // array sources have already been convert to Event Objects
+							abstractEvent = eventInput;
+						}
+						else {
+							abstractEvent = buildEventFromInput(eventInput, source);
+						}
+
+						if (abstractEvent) { // not false (an invalid event)
+							cache.push.apply(
+								cache,
+								expandEvent(abstractEvent) // add individual expanded events to the cache
+							);
+						}
 					}
-					cache = cache.concat(events);
 				}
+
 				pendingSourceCnt--;
 				if (!pendingSourceCnt) {
 					reportEvents(cache);
@@ -945,10 +9537,19 @@ function EventManager(options, _sources) {
 	
 	function _fetchEventSource(source, callback) {
 		var i;
-		var fetchers = fc.sourceFetchers;
+		var fetchers = FC.sourceFetchers;
 		var res;
+
 		for (i=0; i<fetchers.length; i++) {
-			res = fetchers[i](source, rangeStart, rangeEnd, callback);
+			res = fetchers[i].call(
+				t, // this, the Calendar object
+				source,
+				rangeStart.clone(),
+				rangeEnd.clone(),
+				options.timezone,
+				callback
+			);
+
 			if (res === true) {
 				// the fetcher is in charge. made its own async request
 				return;
@@ -959,14 +9560,21 @@ function EventManager(options, _sources) {
 				return;
 			}
 		}
+
 		var events = source.events;
 		if (events) {
 			if ($.isFunction(events)) {
-				pushLoading();
-				events(cloneDate(rangeStart), cloneDate(rangeEnd), function(events) {
-					callback(events);
-					popLoading();
-				});
+				t.pushLoading();
+				events.call(
+					t, // this, the Calendar object
+					rangeStart.clone(),
+					rangeEnd.clone(),
+					options.timezone,
+					function(events) {
+						callback(events);
+						t.popLoading();
+					}
+				);
 			}
 			else if ($.isArray(events)) {
 				callback(events);
@@ -980,16 +9588,37 @@ function EventManager(options, _sources) {
 				var success = source.success;
 				var error = source.error;
 				var complete = source.complete;
-				var data = $.extend({}, source.data || {});
+
+				// retrieve any outbound GET/POST $.ajax data from the options
+				var customData;
+				if ($.isFunction(source.data)) {
+					// supplied as a function that returns a key/value object
+					customData = source.data();
+				}
+				else {
+					// supplied as a straight key/value object
+					customData = source.data;
+				}
+
+				// use a copy of the custom data so we can modify the parameters
+				// and not affect the passed-in object.
+				var data = $.extend({}, customData || {});
+
 				var startParam = firstDefined(source.startParam, options.startParam);
 				var endParam = firstDefined(source.endParam, options.endParam);
+				var timezoneParam = firstDefined(source.timezoneParam, options.timezoneParam);
+
 				if (startParam) {
-					data[startParam] = Math.round(+rangeStart / 1000);
+					data[startParam] = rangeStart.format();
 				}
 				if (endParam) {
-					data[endParam] = Math.round(+rangeEnd / 1000);
+					data[endParam] = rangeEnd.format();
+				}
+				if (options.timezone && options.timezone != 'local') {
+					data[timezoneParam] = options.timezone;
 				}
-				pushLoading();
+
+				t.pushLoading();
 				$.ajax($.extend({}, ajaxDefaults, source, {
 					data: data,
 					success: function(events) {
@@ -1006,7 +9635,7 @@ function EventManager(options, _sources) {
 					},
 					complete: function() {
 						applyAll(complete, this, arguments);
-						popLoading();
+						t.popLoading();
 					}
 				}));
 			}else{
@@ -1021,29 +9650,60 @@ function EventManager(options, _sources) {
 	-----------------------------------------------------------------------------*/
 	
 
-	function addEventSource(source) {
-		source = _addEventSource(source);
+	function addEventSource(sourceInput) {
+		var source = buildEventSource(sourceInput);
 		if (source) {
+			sources.push(source);
 			pendingSourceCnt++;
 			fetchEventSource(source, currentFetchID); // will eventually call reportEvents
 		}
 	}
-	
-	
-	function _addEventSource(source) {
-		if ($.isFunction(source) || $.isArray(source)) {
-			source = { events: source };
+
+
+	function buildEventSource(sourceInput) { // will return undefined if invalid source
+		var normalizers = FC.sourceNormalizers;
+		var source;
+		var i;
+
+		if ($.isFunction(sourceInput) || $.isArray(sourceInput)) {
+			source = { events: sourceInput };
 		}
-		else if (typeof source == 'string') {
-			source = { url: source };
+		else if (typeof sourceInput === 'string') {
+			source = { url: sourceInput };
 		}
-		if (typeof source == 'object') {
-			normalizeSource(source);
-			sources.push(source);
+		else if (typeof sourceInput === 'object') {
+			source = $.extend({}, sourceInput); // shallow copy
+		}
+
+		if (source) {
+
+			// TODO: repeat code, same code for event classNames
+			if (source.className) {
+				if (typeof source.className === 'string') {
+					source.className = source.className.split(/\s+/);
+				}
+				// otherwise, assumed to be an array
+			}
+			else {
+				source.className = [];
+			}
+
+			// for array sources, we convert to standard Event Objects up front
+			if ($.isArray(source.events)) {
+				source.origArray = source.events; // for removeEventSource
+				source.events = $.map(source.events, function(eventInput) {
+					return buildEventFromInput(eventInput, source);
+				});
+			}
+
+			for (i=0; i<normalizers.length; i++) {
+				normalizers[i].call(t, source);
+			}
+
 			return source;
 		}
 	}
-	
+
 
 	function removeEventSource(source) {
 		sources = $.grep(sources, function(src) {
@@ -1055,87 +9715,122 @@ function EventManager(options, _sources) {
 		});
 		reportEvents(cache);
 	}
+
+
+	function isSourcesEqual(source1, source2) {
+		return source1 && source2 && getSourcePrimitive(source1) == getSourcePrimitive(source2);
+	}
+
+
+	function getSourcePrimitive(source) {
+		return (
+			(typeof source === 'object') ? // a normalized event source?
+				(source.origArray || source.googleCalendarId || source.url || source.events) : // get the primitive
+				null
+		) ||
+		source; // the given argument *is* the primitive
+	}
 	
 	
 	
 	/* Manipulation
 	-----------------------------------------------------------------------------*/
-	
-	
-	function updateEvent(event) { // update an existing event
-		var i, len = cache.length, e,
-			defaultEventEnd = getView().defaultEventEnd, // getView???
-			startDelta = event.start - event._start,
-			endDelta = event.end ?
-				(event.end - (event._end || defaultEventEnd(event))) // event._end would be null if event.end
-				: 0;                                                      // was null and event was just resized
-		for (i=0; i<len; i++) {
-			e = cache[i];
-			if (e._id == event._id && e != event) {
-				e.start = new Date(+e.start + startDelta);
-				if (event.end) {
-					if (e.end) {
-						e.end = new Date(+e.end + endDelta);
-					}else{
-						e.end = new Date(+defaultEventEnd(e) + endDelta);
-					}
-				}else{
-					e.end = null;
+
+
+	// Only ever called from the externally-facing API
+	function updateEvent(event) {
+
+		// massage start/end values, even if date string values
+		event.start = t.moment(event.start);
+		if (event.end) {
+			event.end = t.moment(event.end);
+		}
+		else {
+			event.end = null;
+		}
+
+		mutateEvent(event, getMiscEventProps(event)); // will handle start/end/allDay normalization
+		reportEvents(cache); // reports event modifications (so we can redraw)
+	}
+
+
+	// Returns a hash of misc event properties that should be copied over to related events.
+	function getMiscEventProps(event) {
+		var props = {};
+
+		$.each(event, function(name, val) {
+			if (isMiscEventPropName(name)) {
+				if (val !== undefined && isAtomic(val)) { // a defined non-object
+					props[name] = val;
 				}
-				e.title = event.title;
-				e.url = event.url;
-				e.allDay = event.allDay;
-				e.className = event.className;
-				e.editable = event.editable;
-				e.color = event.color;
-				e.backgroudColor = event.backgroudColor;
-				e.borderColor = event.borderColor;
-				e.textColor = event.textColor;
-				normalizeEvent(e);
-			}
-		}
-		normalizeEvent(event);
-		reportEvents(cache);
+			}
+		});
+
+		return props;
 	}
+
+	// non-date-related, non-id-related, non-secret
+	function isMiscEventPropName(name) {
+		return !/^_|^(id|allDay|start|end)$/.test(name);
+	}
+
 	
-	
-	function renderEvent(event, stick) {
-		normalizeEvent(event);
-		if (!event.source) {
-			if (stick) {
-				stickySource.events.push(event);
-				event.source = stickySource;
+	// returns the expanded events that were created
+	function renderEvent(eventInput, stick) {
+		var abstractEvent = buildEventFromInput(eventInput);
+		var events;
+		var i, event;
+
+		if (abstractEvent) { // not false (a valid input)
+			events = expandEvent(abstractEvent);
+
+			for (i = 0; i < events.length; i++) {
+				event = events[i];
+
+				if (!event.source) {
+					if (stick) {
+						stickySource.events.push(event);
+						event.source = stickySource;
+					}
+					cache.push(event);
+				}
 			}
-			cache.push(event);
+
+			reportEvents(cache);
+
+			return events;
 		}
-		reportEvents(cache);
+
+		return [];
 	}
 	
 	
 	function removeEvents(filter) {
-		if (!filter) { // remove all
-			cache = [];
-			// clear all array sources
-			for (var i=0; i<sources.length; i++) {
-				if ($.isArray(sources[i].events)) {
-					sources[i].events = [];
-				}
-			}
-		}else{
-			if (!$.isFunction(filter)) { // an event ID
-				var id = filter + '';
-				filter = function(e) {
-					return e._id == id;
-				};
-			}
-			cache = $.grep(cache, filter, true);
-			// remove events from array sources
-			for (var i=0; i<sources.length; i++) {
-				if ($.isArray(sources[i].events)) {
-					sources[i].events = $.grep(sources[i].events, filter, true);
-				}
+		var eventID;
+		var i;
+
+		if (filter == null) { // null or undefined. remove all events
+			filter = function() { return true; }; // will always match
+		}
+		else if (!$.isFunction(filter)) { // an event ID
+			eventID = filter + '';
+			filter = function(event) {
+				return event._id == eventID;
+			};
+		}
+
+		// Purge event(s) from our local cache
+		cache = $.grep(cache, filter, true); // inverse=true
+
+		// Remove events from array sources.
+		// This works because they have been converted to official Event Objects up front.
+		// (and as a result, event._id has been calculated).
+		for (i=0; i<sources.length; i++) {
+			if ($.isArray(sources[i].events)) {
+				sources[i].events = $.grep(sources[i].events, filter, true);
 			}
 		}
+
 		reportEvents(cache);
 	}
 	
@@ -1144,7 +9839,7 @@ function EventManager(options, _sources) {
 		if ($.isFunction(filter)) {
 			return $.grep(cache, filter);
 		}
-		else if (filter) { // an event ID
+		else if (filter != null) { // not null, not undefined. an event ID
 			filter += '';
 			return $.grep(cache, function(e) {
 				return e._id == filter;
@@ -1155,4223 +9850,1615 @@ function EventManager(options, _sources) {
 	
 	
 	
-	/* Loading State
-	-----------------------------------------------------------------------------*/
-	
-	
-	function pushLoading() {
-		if (!loadingLevel++) {
-			trigger('loading', null, true);
-		}
-	}
-	
-	
-	function popLoading() {
-		if (!--loadingLevel) {
-			trigger('loading', null, false);
-		}
-	}
-	
-	
-	
 	/* Event Normalization
 	-----------------------------------------------------------------------------*/
-	
-	
-	function normalizeEvent(event) {
-		var source = event.source || {};
-		var ignoreTimezone = firstDefined(source.ignoreTimezone, options.ignoreTimezone);
-		event._id = event._id || (event.id === undefined ? '_fc' + eventGUID++ : event.id + '');
-		if (event.date) {
-			if (!event.start) {
-				event.start = event.date;
-			}
-			delete event.date;
+
+
+	// Given a raw object with key/value properties, returns an "abstract" Event object.
+	// An "abstract" event is an event that, if recurring, will not have been expanded yet.
+	// Will return `false` when input is invalid.
+	// `source` is optional
+	function buildEventFromInput(input, source) {
+		var out = {};
+		var start, end;
+		var allDay;
+
+		if (options.eventDataTransform) {
+			input = options.eventDataTransform(input);
 		}
-		event._start = cloneDate(event.start = parseDate(event.start, ignoreTimezone));
-		event.end = parseDate(event.end, ignoreTimezone);
-		if (event.end && event.end <= event.start) {
-			event.end = null;
+		if (source && source.eventDataTransform) {
+			input = source.eventDataTransform(input);
 		}
-		event._end = event.end ? cloneDate(event.end) : null;
-		if (event.allDay === undefined) {
-			event.allDay = firstDefined(source.allDayDefault, options.allDayDefault);
+
+		// Copy all properties over to the resulting object.
+		// The special-case properties will be copied over afterwards.
+		$.extend(out, input);
+
+		if (source) {
+			out.source = source;
 		}
-		if (event.className) {
-			if (typeof event.className == 'string') {
-				event.className = event.className.split(/\s+/);
+
+		out._id = input._id || (input.id === undefined ? '_fc' + eventGUID++ : input.id + '');
+
+		if (input.className) {
+			if (typeof input.className == 'string') {
+				out.className = input.className.split(/\s+/);
 			}
-		}else{
-			event.className = [];
-		}
-		// TODO: if there is no start date, return false to indicate an invalid event
-	}
-	
-	
-	
-	/* Utils
-	------------------------------------------------------------------------------*/
-	
-	
-	function normalizeSource(source) {
-		if (source.className) {
-			// TODO: repeat code, same code for event classNames
-			if (typeof source.className == 'string') {
-				source.className = source.className.split(/\s+/);
+			else { // assumed to be an array
+				out.className = input.className;
 			}
-		}else{
-			source.className = [];
 		}
-		var normalizers = fc.sourceNormalizers;
-		for (var i=0; i<normalizers.length; i++) {
-			normalizers[i](source);
+		else {
+			out.className = [];
 		}
-	}
-	
-	
-	function isSourcesEqual(source1, source2) {
-		return source1 && source2 && getSourcePrimitive(source1) == getSourcePrimitive(source2);
-	}
-	
-	
-	function getSourcePrimitive(source) {
-		return ((typeof source == 'object') ? (source.events || source.url) : '') || source;
-	}
 
+		start = input.start || input.date; // "date" is an alias for "start"
+		end = input.end;
 
-}
+		// parse as a time (Duration) if applicable
+		if (isTimeString(start)) {
+			start = moment.duration(start);
+		}
+		if (isTimeString(end)) {
+			end = moment.duration(end);
+		}
 
-;;
+		if (input.dow || moment.isDuration(start) || moment.isDuration(end)) {
 
+			// the event is "abstract" (recurring) so don't calculate exact start/end dates just yet
+			out.start = start ? moment.duration(start) : null; // will be a Duration or null
+			out.end = end ? moment.duration(end) : null; // will be a Duration or null
+			out._recurring = true; // our internal marker
+		}
+		else {
+
+			if (start) {
+				start = t.moment(start);
+				if (!start.isValid()) {
+					return false;
+				}
+			}
 
-fc.addDays = addDays;
-fc.cloneDate = cloneDate;
-fc.parseDate = parseDate;
-fc.parseISO8601 = parseISO8601;
-fc.parseTime = parseTime;
-fc.formatDate = formatDate;
-fc.formatDates = formatDates;
+			if (end) {
+				end = t.moment(end);
+				if (!end.isValid()) {
+					end = null; // let defaults take over
+				}
+			}
 
+			allDay = input.allDay;
+			if (allDay === undefined) { // still undefined? fallback to default
+				allDay = firstDefined(
+					source ? source.allDayDefault : undefined,
+					options.allDayDefault
+				);
+				// still undefined? normalizeEventRange will calculate it
+			}
 
+			assignDatesToEvent(start, end, allDay, out);
+		}
 
-/* Date Math
------------------------------------------------------------------------------*/
+		return out;
+	}
 
-var dayIDs = ['sun', 'mon', 'tue', 'wed', 'thu', 'fri', 'sat'],
-	DAY_MS = 86400000,
-	HOUR_MS = 3600000,
-	MINUTE_MS = 60000;
-	
 
-function addYears(d, n, keepTime) {
-	d.setFullYear(d.getFullYear() + n);
-	if (!keepTime) {
-		clearTime(d);
+	// Normalizes and assigns the given dates to the given partially-formed event object.
+	// NOTE: mutates the given start/end moments. does not make a copy.
+	function assignDatesToEvent(start, end, allDay, event) {
+		event.start = start;
+		event.end = end;
+		event.allDay = allDay;
+		normalizeEventRange(event);
+		backupEventDates(event);
 	}
-	return d;
-}
 
 
-function addMonths(d, n, keepTime) { // prevents day overflow/underflow
-	if (+d) { // prevent infinite looping on invalid dates
-		var m = d.getMonth() + n,
-			check = cloneDate(d);
-		check.setDate(1);
-		check.setMonth(m);
-		d.setMonth(m);
-		if (!keepTime) {
-			clearTime(d);
+	// Ensures proper values for allDay/start/end. Accepts an Event object, or a plain object with event-ish properties.
+	// NOTE: Will modify the given object.
+	function normalizeEventRange(props) {
+
+		normalizeEventRangeTimes(props);
+
+		if (props.end && !props.end.isAfter(props.start)) {
+			props.end = null;
 		}
-		while (d.getMonth() != check.getMonth()) {
-			d.setDate(d.getDate() + (d < check ? 1 : -1));
+
+		if (!props.end) {
+			if (options.forceEventDuration) {
+				props.end = t.getDefaultEventEnd(props.allDay, props.start);
+			}
+			else {
+				props.end = null;
+			}
 		}
 	}
-	return d;
-}
 
 
-function addDays(d, n, keepTime) { // deals with daylight savings
-	if (+d) {
-		var dd = d.getDate() + n,
-			check = cloneDate(d);
-		check.setHours(9); // set to middle of day
-		check.setDate(dd);
-		d.setDate(dd);
-		if (!keepTime) {
-			clearTime(d);
+	// Ensures the allDay property exists and the timeliness of the start/end dates are consistent
+	function normalizeEventRangeTimes(range) {
+		if (range.allDay == null) {
+			range.allDay = !(range.start.hasTime() || (range.end && range.end.hasTime()));
+		}
+
+		if (range.allDay) {
+			range.start.stripTime();
+			if (range.end) {
+				// TODO: consider nextDayThreshold here? If so, will require a lot of testing and adjustment
+				range.end.stripTime();
+			}
+		}
+		else {
+			if (!range.start.hasTime()) {
+				range.start = t.rezoneDate(range.start); // will assign a 00:00 time
+			}
+			if (range.end && !range.end.hasTime()) {
+				range.end = t.rezoneDate(range.end); // will assign a 00:00 time
+			}
 		}
-		fixDate(d, check);
 	}
-	return d;
-}
 
 
-function fixDate(d, check) { // force d to be on check's YMD, for daylight savings purposes
-	if (+d) { // prevent infinite looping on invalid dates
-		while (d.getDate() != check.getDate()) {
-			d.setTime(+d + (d < check ? 1 : -1) * HOUR_MS);
+	// If `range` is a proper range with a start and end, returns the original object.
+	// If missing an end, computes a new range with an end, computing it as if it were an event.
+	// TODO: make this a part of the event -> eventRange system
+	function ensureVisibleEventRange(range) {
+		var allDay;
+
+		if (!range.end) {
+
+			allDay = range.allDay; // range might be more event-ish than we think
+			if (allDay == null) {
+				allDay = !range.start.hasTime();
+			}
+
+			range = $.extend({}, range); // make a copy, copying over other misc properties
+			range.end = t.getDefaultEventEnd(allDay, range.start);
 		}
+		return range;
 	}
-}
 
 
-function addMinutes(d, n) {
-	d.setMinutes(d.getMinutes() + n);
-	return d;
-}
+	// If the given event is a recurring event, break it down into an array of individual instances.
+	// If not a recurring event, return an array with the single original event.
+	// If given a falsy input (probably because of a failed buildEventFromInput call), returns an empty array.
+	// HACK: can override the recurring window by providing custom rangeStart/rangeEnd (for businessHours).
+	function expandEvent(abstractEvent, _rangeStart, _rangeEnd) {
+		var events = [];
+		var dowHash;
+		var dow;
+		var i;
+		var date;
+		var startTime, endTime;
+		var start, end;
+		var event;
 
+		_rangeStart = _rangeStart || rangeStart;
+		_rangeEnd = _rangeEnd || rangeEnd;
 
-function clearTime(d) {
-	d.setHours(0);
-	d.setMinutes(0);
-	d.setSeconds(0); 
-	d.setMilliseconds(0);
-	return d;
-}
+		if (abstractEvent) {
+			if (abstractEvent._recurring) {
 
+				// make a boolean hash as to whether the event occurs on each day-of-week
+				if ((dow = abstractEvent.dow)) {
+					dowHash = {};
+					for (i = 0; i < dow.length; i++) {
+						dowHash[dow[i]] = true;
+					}
+				}
 
-function cloneDate(d, dontKeepTime) {
-	if (dontKeepTime) {
-		return clearTime(new Date(+d));
-	}
-	return new Date(+d);
-}
+				// iterate through every day in the current range
+				date = _rangeStart.clone().stripTime(); // holds the date of the current day
+				while (date.isBefore(_rangeEnd)) {
 
+					if (!dowHash || dowHash[date.day()]) { // if everyday, or this particular day-of-week
 
-function zeroDate() { // returns a Date with time 00:00:00 and dateOfMonth=1
-	var i=0, d;
-	do {
-		d = new Date(1970, i++, 1);
-	} while (d.getHours()); // != 0
-	return d;
-}
+						startTime = abstractEvent.start; // the stored start and end properties are times (Durations)
+						endTime = abstractEvent.end; // "
+						start = date.clone();
+						end = null;
 
+						if (startTime) {
+							start = start.time(startTime);
+						}
+						if (endTime) {
+							end = date.clone().time(endTime);
+						}
 
-function skipWeekend(date, inc, excl) {
-	inc = inc || 1;
-	while (!date.getDay() || (excl && date.getDay()==1 || !excl && date.getDay()==6)) {
-		addDays(date, inc);
+						event = $.extend({}, abstractEvent); // make a copy of the original
+						assignDatesToEvent(
+							start, end,
+							!startTime && !endTime, // allDay?
+							event
+						);
+						events.push(event);
+					}
+
+					date.add(1, 'days');
+				}
+			}
+			else {
+				events.push(abstractEvent); // return the original event. will be a one-item array
+			}
+		}
+
+		return events;
 	}
-	return date;
-}
 
 
-function dayDiff(d1, d2) { // d1 - d2
-	return Math.round((cloneDate(d1, true) - cloneDate(d2, true)) / DAY_MS);
-}
 
+	/* Event Modification Math
+	-----------------------------------------------------------------------------------------*/
+
+
+	// Modifies an event and all related events by applying the given properties.
+	// Special date-diffing logic is used for manipulation of dates.
+	// If `props` does not contain start/end dates, the updated values are assumed to be the event's current start/end.
+	// All date comparisons are done against the event's pristine _start and _end dates.
+	// Returns an object with delta information and a function to undo all operations.
+	// For making computations in a granularity greater than day/time, specify largeUnit.
+	// NOTE: The given `newProps` might be mutated for normalization purposes.
+	function mutateEvent(event, newProps, largeUnit) {
+		var miscProps = {};
+		var oldProps;
+		var clearEnd;
+		var startDelta;
+		var endDelta;
+		var durationDelta;
+		var undoFunc;
+
+		// diffs the dates in the appropriate way, returning a duration
+		function diffDates(date1, date0) { // date1 - date0
+			if (largeUnit) {
+				return diffByUnit(date1, date0, largeUnit);
+			}
+			else if (newProps.allDay) {
+				return diffDay(date1, date0);
+			}
+			else {
+				return diffDayTime(date1, date0);
+			}
+		}
 
-function setYMD(date, y, m, d) {
-	if (y !== undefined && y != date.getFullYear()) {
-		date.setDate(1);
-		date.setMonth(0);
-		date.setFullYear(y);
-	}
-	if (m !== undefined && m != date.getMonth()) {
-		date.setDate(1);
-		date.setMonth(m);
-	}
-	if (d !== undefined) {
-		date.setDate(d);
-	}
-}
+		newProps = newProps || {};
 
+		// normalize new date-related properties
+		if (!newProps.start) {
+			newProps.start = event.start.clone();
+		}
+		if (newProps.end === undefined) {
+			newProps.end = event.end ? event.end.clone() : null;
+		}
+		if (newProps.allDay == null) { // is null or undefined?
+			newProps.allDay = event.allDay;
+		}
+		normalizeEventRange(newProps);
 
+		// create normalized versions of the original props to compare against
+		// need a real end value, for diffing
+		oldProps = {
+			start: event._start.clone(),
+			end: event._end ? event._end.clone() : t.getDefaultEventEnd(event._allDay, event._start),
+			allDay: newProps.allDay // normalize the dates in the same regard as the new properties
+		};
+		normalizeEventRange(oldProps);
 
-/* Date Parsing
------------------------------------------------------------------------------*/
+		// need to clear the end date if explicitly changed to null
+		clearEnd = event._end !== null && newProps.end === null;
 
+		// compute the delta for moving the start date
+		startDelta = diffDates(newProps.start, oldProps.start);
 
-function parseDate(s, ignoreTimezone) { // ignoreTimezone defaults to true
-	if (typeof s == 'object') { // already a Date object
-		return s;
-	}
-	if (typeof s == 'number') { // a UNIX timestamp
-		return new Date(s * 1000);
-	}
-	if (typeof s == 'string') {
-		if (s.match(/^\d+(\.\d+)?$/)) { // a UNIX timestamp
-			return new Date(parseFloat(s) * 1000);
+		// compute the delta for moving the end date
+		if (newProps.end) {
+			endDelta = diffDates(newProps.end, oldProps.end);
+			durationDelta = endDelta.subtract(startDelta);
 		}
-		if (ignoreTimezone === undefined) {
-			ignoreTimezone = true;
+		else {
+			durationDelta = null;
 		}
-		return parseISO8601(s, ignoreTimezone) || (s ? new Date(s) : null);
+
+		// gather all non-date-related properties
+		$.each(newProps, function(name, val) {
+			if (isMiscEventPropName(name)) {
+				if (val !== undefined) {
+					miscProps[name] = val;
+				}
+			}
+		});
+
+		// apply the operations to the event and all related events
+		undoFunc = mutateEvents(
+			clientEvents(event._id), // get events with this ID
+			clearEnd,
+			newProps.allDay,
+			startDelta,
+			durationDelta,
+			miscProps
+		);
+
+		return {
+			dateDelta: startDelta,
+			durationDelta: durationDelta,
+			undo: undoFunc
+		};
 	}
-	// TODO: never return invalid dates (like from new Date(<string>)), return null instead
-	return null;
-}
 
 
-function parseISO8601(s, ignoreTimezone) { // ignoreTimezone defaults to false
-	// derived from http://delete.me.uk/2005/03/iso8601.html
-	// TODO: for a know glitch/feature, read tests/issue_206_parseDate_dst.html
-	var m = s.match(/^([0-9]{4})(-([0-9]{2})(-([0-9]{2})([T ]([0-9]{2}):([0-9]{2})(:([0-9]{2})(\.([0-9]+))?)?(Z|(([-+])([0-9]{2})(:?([0-9]{2}))?))?)?)?)?$/);
-	if (!m) {
-		return null;
+	// Modifies an array of events in the following ways (operations are in order):
+	// - clear the event's `end`
+	// - convert the event to allDay
+	// - add `dateDelta` to the start and end
+	// - add `durationDelta` to the event's duration
+	// - assign `miscProps` to the event
+	//
+	// Returns a function that can be called to undo all the operations.
+	//
+	// TODO: don't use so many closures. possible memory issues when lots of events with same ID.
+	//
+	function mutateEvents(events, clearEnd, allDay, dateDelta, durationDelta, miscProps) {
+		var isAmbigTimezone = t.getIsAmbigTimezone();
+		var undoFunctions = [];
+
+		// normalize zero-length deltas to be null
+		if (dateDelta && !dateDelta.valueOf()) { dateDelta = null; }
+		if (durationDelta && !durationDelta.valueOf()) { durationDelta = null; }
+
+		$.each(events, function(i, event) {
+			var oldProps;
+			var newProps;
+
+			// build an object holding all the old values, both date-related and misc.
+			// for the undo function.
+			oldProps = {
+				start: event.start.clone(),
+				end: event.end ? event.end.clone() : null,
+				allDay: event.allDay
+			};
+			$.each(miscProps, function(name) {
+				oldProps[name] = event[name];
+			});
+
+			// new date-related properties. work off the original date snapshot.
+			// ok to use references because they will be thrown away when backupEventDates is called.
+			newProps = {
+				start: event._start,
+				end: event._end,
+				allDay: allDay // normalize the dates in the same regard as the new properties
+			};
+			normalizeEventRange(newProps); // massages start/end/allDay
+
+			// strip or ensure the end date
+			if (clearEnd) {
+				newProps.end = null;
+			}
+			else if (durationDelta && !newProps.end) { // the duration translation requires an end date
+				newProps.end = t.getDefaultEventEnd(newProps.allDay, newProps.start);
+			}
+
+			if (dateDelta) {
+				newProps.start.add(dateDelta);
+				if (newProps.end) {
+					newProps.end.add(dateDelta);
+				}
+			}
+
+			if (durationDelta) {
+				newProps.end.add(durationDelta); // end already ensured above
+			}
+
+			// if the dates have changed, and we know it is impossible to recompute the
+			// timezone offsets, strip the zone.
+			if (
+				isAmbigTimezone &&
+				!newProps.allDay &&
+				(dateDelta || durationDelta)
+			) {
+				newProps.start.stripZone();
+				if (newProps.end) {
+					newProps.end.stripZone();
+				}
+			}
+
+			$.extend(event, miscProps, newProps); // copy over misc props, then date-related props
+			backupEventDates(event); // regenerate internal _start/_end/_allDay
+
+			undoFunctions.push(function() {
+				$.extend(event, oldProps);
+				backupEventDates(event); // regenerate internal _start/_end/_allDay
+			});
+		});
+
+		return function() {
+			for (var i = 0; i < undoFunctions.length; i++) {
+				undoFunctions[i]();
+			}
+		};
 	}
-	var date = new Date(m[1], 0, 1);
-	if (ignoreTimezone || !m[13]) {
-		var check = new Date(m[1], 0, 1, 9, 0);
-		if (m[3]) {
-			date.setMonth(m[3] - 1);
-			check.setMonth(m[3] - 1);
-		}
-		if (m[5]) {
-			date.setDate(m[5]);
-			check.setDate(m[5]);
-		}
-		fixDate(date, check);
-		if (m[7]) {
-			date.setHours(m[7]);
-		}
-		if (m[8]) {
-			date.setMinutes(m[8]);
-		}
-		if (m[10]) {
-			date.setSeconds(m[10]);
+
+
+	/* Business Hours
+	-----------------------------------------------------------------------------------------*/
+
+	t.getBusinessHoursEvents = getBusinessHoursEvents;
+
+
+	// Returns an array of events as to when the business hours occur in the given view.
+	// Abuse of our event system :(
+	function getBusinessHoursEvents(wholeDay) {
+		var optionVal = options.businessHours;
+		var defaultVal = {
+			className: 'fc-nonbusiness',
+			start: '09:00',
+			end: '17:00',
+			dow: [ 1, 2, 3, 4, 5 ], // monday - friday
+			rendering: 'inverse-background'
+		};
+		var view = t.getView();
+		var eventInput;
+
+		if (optionVal) { // `true` (which means "use the defaults") or an override object
+			eventInput = $.extend(
+				{}, // copy to a new object in either case
+				defaultVal,
+				typeof optionVal === 'object' ? optionVal : {} // override the defaults
+			);
 		}
-		if (m[12]) {
-			date.setMilliseconds(Number("0." + m[12]) * 1000);
+
+		if (eventInput) {
+
+			// if a whole-day series is requested, clear the start/end times
+			if (wholeDay) {
+				eventInput.start = null;
+				eventInput.end = null;
+			}
+
+			return expandEvent(
+				buildEventFromInput(eventInput),
+				view.start,
+				view.end
+			);
 		}
-		fixDate(date, check);
-	}else{
-		date.setUTCFullYear(
-			m[1],
-			m[3] ? m[3] - 1 : 0,
-			m[5] || 1
+
+		return [];
+	}
+
+
+	/* Overlapping / Constraining
+	-----------------------------------------------------------------------------------------*/
+
+	t.isEventRangeAllowed = isEventRangeAllowed;
+	t.isSelectionRangeAllowed = isSelectionRangeAllowed;
+	t.isExternalDropRangeAllowed = isExternalDropRangeAllowed;
+
+
+	function isEventRangeAllowed(range, event) {
+		var source = event.source || {};
+		var constraint = firstDefined(
+			event.constraint,
+			source.constraint,
+			options.eventConstraint
 		);
-		date.setUTCHours(
-			m[7] || 0,
-			m[8] || 0,
-			m[10] || 0,
-			m[12] ? Number("0." + m[12]) * 1000 : 0
+		var overlap = firstDefined(
+			event.overlap,
+			source.overlap,
+			options.eventOverlap
 		);
-		if (m[14]) {
-			var offset = Number(m[16]) * 60 + (m[18] ? Number(m[18]) : 0);
-			offset *= m[15] == '-' ? 1 : -1;
-			date = new Date(+date + (offset * 60 * 1000));
-		}
-	}
-	return date;
-}
 
+		range = ensureVisibleEventRange(range); // ensure a proper range with an end for isRangeAllowed
 
-function parseTime(s) { // returns minutes since start of day
-	if (typeof s == 'number') { // an hour
-		return s * 60;
+		return isRangeAllowed(range, constraint, overlap, event);
 	}
-	if (typeof s == 'object') { // a Date object
-		return s.getHours() * 60 + s.getMinutes();
+
+
+	function isSelectionRangeAllowed(range) {
+		return isRangeAllowed(range, options.selectConstraint, options.selectOverlap);
 	}
-	var m = s.match(/(\d+)(?::(\d+))?\s*(\w+)?/);
-	if (m) {
-		var h = parseInt(m[1], 10);
-		if (m[3]) {
-			h %= 12;
-			if (m[3].toLowerCase().charAt(0) == 'p') {
-				h += 12;
-			}
+
+
+	// when `eventProps` is defined, consider this an event.
+	// `eventProps` can contain misc non-date-related info about the event.
+	function isExternalDropRangeAllowed(range, eventProps) {
+		var eventInput;
+		var event;
+
+		// note: very similar logic is in View's reportExternalDrop
+		if (eventProps) {
+			eventInput = $.extend({}, eventProps, range);
+			event = expandEvent(buildEventFromInput(eventInput))[0];
 		}
-		return h * 60 + (m[2] ? parseInt(m[2], 10) : 0);
-	}
-}
 
+		if (event) {
+			return isEventRangeAllowed(range, event);
+		}
+		else { // treat it as a selection
+
+			range = ensureVisibleEventRange(range); // ensure a proper range with an end for isSelectionRangeAllowed
 
+			return isSelectionRangeAllowed(range);
+		}
+	}
 
-/* Date Formatting
------------------------------------------------------------------------------*/
-// TODO: use same function formatDate(date, [date2], format, [options])
 
+	// Returns true if the given range (caused by an event drop/resize or a selection) is allowed to exist
+	// according to the constraint/overlap settings.
+	// `event` is not required if checking a selection.
+	function isRangeAllowed(range, constraint, overlap, event) {
+		var constraintEvents;
+		var anyContainment;
+		var peerEvents;
+		var i, peerEvent;
+		var peerOverlap;
 
-function formatDate(date, format, options) {
-	return formatDates(date, null, format, options);
-}
+		// normalize. fyi, we're normalizing in too many places :(
+		range = $.extend({}, range); // copy all properties in case there are misc non-date properties
+		range.start = range.start.clone().stripZone();
+		range.end = range.end.clone().stripZone();
 
+		// the range must be fully contained by at least one of produced constraint events
+		if (constraint != null) {
 
-function formatDates(date1, date2, format, options) {
-	options = options || defaults;
-	var date = date1,
-		otherDate = date2,
-		i, len = format.length, c,
-		i2, formatter,
-		res = '';
-	for (i=0; i<len; i++) {
-		c = format.charAt(i);
-		if (c == "'") {
-			for (i2=i+1; i2<len; i2++) {
-				if (format.charAt(i2) == "'") {
-					if (date) {
-						if (i2 == i+1) {
-							res += "'";
-						}else{
-							res += format.substring(i+1, i2);
-						}
-						i = i2;
-					}
+			// not treated as an event! intermediate data structure
+			// TODO: use ranges in the future
+			constraintEvents = constraintToEvents(constraint);
+
+			anyContainment = false;
+			for (i = 0; i < constraintEvents.length; i++) {
+				if (eventContainsRange(constraintEvents[i], range)) {
+					anyContainment = true;
 					break;
 				}
 			}
-		}
-		else if (c == '(') {
-			for (i2=i+1; i2<len; i2++) {
-				if (format.charAt(i2) == ')') {
-					var subres = formatDate(date, format.substring(i+1, i2), options);
-					if (parseInt(subres.replace(/\D/, ''), 10)) {
-						res += subres;
-					}
-					i = i2;
-					break;
-				}
+
+			if (!anyContainment) {
+				return false;
 			}
 		}
-		else if (c == '[') {
-			for (i2=i+1; i2<len; i2++) {
-				if (format.charAt(i2) == ']') {
-					var subformat = format.substring(i+1, i2);
-					var subres = formatDate(date, subformat, options);
-					if (subres != formatDate(otherDate, subformat, options)) {
-						res += subres;
+
+		peerEvents = t.getPeerEvents(event, range);
+
+		for (i = 0; i < peerEvents.length; i++)  {
+			peerEvent = peerEvents[i];
+
+			// there needs to be an actual intersection before disallowing anything
+			if (eventIntersectsRange(peerEvent, range)) {
+
+				// evaluate overlap for the given range and short-circuit if necessary
+				if (overlap === false) {
+					return false;
+				}
+				// if the event's overlap is a test function, pass the peer event in question as the first param
+				else if (typeof overlap === 'function' && !overlap(peerEvent, event)) {
+					return false;
+				}
+
+				// if we are computing if the given range is allowable for an event, consider the other event's
+				// EventObject-specific or Source-specific `overlap` property
+				if (event) {
+					peerOverlap = firstDefined(
+						peerEvent.overlap,
+						(peerEvent.source || {}).overlap
+						// we already considered the global `eventOverlap`
+					);
+					if (peerOverlap === false) {
+						return false;
+					}
+					// if the peer event's overlap is a test function, pass the subject event as the first param
+					if (typeof peerOverlap === 'function' && !peerOverlap(event, peerEvent)) {
+						return false;
 					}
-					i = i2;
-					break;
 				}
 			}
 		}
-		else if (c == '{') {
-			date = date2;
-			otherDate = date1;
-		}
-		else if (c == '}') {
-			date = date1;
-			otherDate = date2;
+
+		return true;
+	}
+
+
+	// Given an event input from the API, produces an array of event objects. Possible event inputs:
+	// 'businessHours'
+	// An event ID (number or string)
+	// An object with specific start/end dates or a recurring event (like what businessHours accepts)
+	function constraintToEvents(constraintInput) {
+
+		if (constraintInput === 'businessHours') {
+			return getBusinessHoursEvents();
 		}
-		else {
-			for (i2=len; i2>i; i2--) {
-				if (formatter = dateFormatters[format.substring(i, i2)]) {
-					if (date) {
-						res += formatter(date, options);
-					}
-					i = i2 - 1;
-					break;
-				}
-			}
-			if (i2 == i) {
-				if (date) {
-					res += c;
-				}
-			}
+
+		if (typeof constraintInput === 'object') {
+			return expandEvent(buildEventFromInput(constraintInput));
 		}
+
+		return clientEvents(constraintInput); // probably an ID
 	}
-	return res;
-};
 
 
-var dateFormatters = {
-	s	: function(d)	{ return d.getSeconds() },
-	ss	: function(d)	{ return zeroPad(d.getSeconds()) },
-	m	: function(d)	{ return d.getMinutes() },
-	mm	: function(d)	{ return zeroPad(d.getMinutes()) },
-	h	: function(d)	{ return d.getHours() % 12 || 12 },
-	hh	: function(d)	{ return zeroPad(d.getHours() % 12 || 12) },
-	H	: function(d)	{ return d.getHours() },
-	HH	: function(d)	{ return zeroPad(d.getHours()) },
-	d	: function(d)	{ return d.getDate() },
-	dd	: function(d)	{ return zeroPad(d.getDate()) },
-	ddd	: function(d,o)	{ return o.dayNamesShort[d.getDay()] },
-	dddd: function(d,o)	{ return o.dayNames[d.getDay()] },
-	M	: function(d)	{ return d.getMonth() + 1 },
-	MM	: function(d)	{ return zeroPad(d.getMonth() + 1) },
-	MMM	: function(d,o)	{ return o.monthNamesShort[d.getMonth()] },
-	MMMM: function(d,o)	{ return o.monthNames[d.getMonth()] },
-	yy	: function(d)	{ return (d.getFullYear()+'').substring(2) },
-	yyyy: function(d)	{ return d.getFullYear() },
-	t	: function(d)	{ return d.getHours() < 12 ? 'a' : 'p' },
-	tt	: function(d)	{ return d.getHours() < 12 ? 'am' : 'pm' },
-	T	: function(d)	{ return d.getHours() < 12 ? 'A' : 'P' },
-	TT	: function(d)	{ return d.getHours() < 12 ? 'AM' : 'PM' },
-	u	: function(d)	{ return formatDate(d, "yyyy-MM-dd'T'HH:mm:ss'Z'") },
-	S	: function(d)	{
-		var date = d.getDate();
-		if (date > 10 && date < 20) {
-			return 'th';
-		}
-		return ['st', 'nd', 'rd'][date%10-1] || 'th';
-	},
-	w   : function(d, o) { // local
-		return o.weekNumberCalculation(d);
-	},
-	W   : function(d) { // ISO
-		return iso8601Week(d);
+	// Does the event's date range fully contain the given range?
+	// start/end already assumed to have stripped zones :(
+	function eventContainsRange(event, range) {
+		var eventStart = event.start.clone().stripZone();
+		var eventEnd = t.getEventEnd(event).stripZone();
+
+		return range.start >= eventStart && range.end <= eventEnd;
 	}
-};
-fc.dateFormatters = dateFormatters;
 
 
-/* thanks jQuery UI (https://github.com/jquery/jquery-ui/blob/master/ui/jquery.ui.datepicker.js)
- * 
- * Set as calculateWeek to determine the week of the year based on the ISO 8601 definition.
- * @param  date  Date - the date to get the week for
- * @return  number - the number of the week within the year that contains this date
- */
-function iso8601Week(date) {
-	var time;
-	var checkDate = new Date(date.getTime());
+	// Does the event's date range intersect with the given range?
+	// start/end already assumed to have stripped zones :(
+	function eventIntersectsRange(event, range) {
+		var eventStart = event.start.clone().stripZone();
+		var eventEnd = t.getEventEnd(event).stripZone();
+
+		return range.start < eventEnd && range.end > eventStart;
+	}
 
-	// Find Thursday of this week starting on Monday
-	checkDate.setDate(checkDate.getDate() + 4 - (checkDate.getDay() || 7));
 
-	time = checkDate.getTime();
-	checkDate.setMonth(0); // Compare with Jan 1
-	checkDate.setDate(1);
-	return Math.floor(Math.round((time - checkDate) / 86400000) / 7) + 1;
+	t.getEventCache = function() {
+		return cache;
+	};
+
 }
 
 
+// Returns a list of events that the given event should be compared against when being considered for a move to
+// the specified range. Attached to the Calendar's prototype because EventManager is a mixin for a Calendar.
+Calendar.prototype.getPeerEvents = function(event, range) {
+	var cache = this.getEventCache();
+	var peerEvents = [];
+	var i, otherEvent;
+
+	for (i = 0; i < cache.length; i++) {
+		otherEvent = cache[i];
+		if (
+			!event ||
+			event._id !== otherEvent._id // don't compare the event to itself or other related [repeating] events
+		) {
+			peerEvents.push(otherEvent);
+		}
+	}
+
+	return peerEvents;
+};
+
+
+// updates the "backup" properties, which are preserved in order to compute diffs later on.
+function backupEventDates(event) {
+	event._allDay = event.allDay;
+	event._start = event.start.clone();
+	event._end = event.end ? event.end.clone() : null;
+}
+
 ;;
 
-fc.applyAll = applyAll;
+/* An abstract class for the "basic" views, as well as month view. Renders one or more rows of day cells.
+----------------------------------------------------------------------------------------------------------------------*/
+// It is a manager for a DayGrid subcomponent, which does most of the heavy lifting.
+// It is responsible for managing width/height.
 
+var BasicView = FC.BasicView = View.extend({
 
-/* Event Date Math
------------------------------------------------------------------------------*/
+	dayGridClass: DayGrid, // class the dayGrid will be instantiated from (overridable by subclasses)
+	dayGrid: null, // the main subcomponent that does most of the heavy lifting
 
+	dayNumbersVisible: false, // display day numbers on each day cell?
+	weekNumbersVisible: false, // display week numbers along the side?
 
-function exclEndDay(event) {
-	if (event.end) {
-		return _exclEndDay(event.end, event.allDay);
-	}else{
-		return addDays(cloneDate(event.start), 1);
-	}
-}
+	weekNumberWidth: null, // width of all the week-number cells running down the side
 
+	headContainerEl: null, // div that hold's the dayGrid's rendered date header
+	headRowEl: null, // the fake row element of the day-of-week header
 
-function _exclEndDay(end, allDay) {
-	end = cloneDate(end);
-	return allDay || end.getHours() || end.getMinutes() ? addDays(end, 1) : clearTime(end);
-}
 
+	initialize: function() {
+		this.dayGrid = this.instantiateDayGrid();
+	},
 
-function segCmp(a, b) {
-	return (b.msLength - a.msLength) * 100 + (a.event.start - b.event.start);
-}
 
+	// Generates the DayGrid object this view needs. Draws from this.dayGridClass
+	instantiateDayGrid: function() {
+		// generate a subclass on the fly with BasicView-specific behavior
+		// TODO: cache this subclass
+		var subclass = this.dayGridClass.extend(basicDayGridMethods);
 
-function segsCollide(seg1, seg2) {
-	return seg1.end > seg2.start && seg1.start < seg2.end;
-}
+		return new subclass(this);
+	},
 
 
+	// Sets the display range and computes all necessary dates
+	setRange: function(range) {
+		View.prototype.setRange.call(this, range); // call the super-method
 
-/* Event Sorting
------------------------------------------------------------------------------*/
+		this.dayGrid.breakOnWeeks = /year|month|week/.test(this.intervalUnit); // do before setRange
+		this.dayGrid.setRange(range);
+	},
 
 
-// event rendering utilities
-function sliceSegs(events, visEventEnds, start, end) {
-	var segs = [],
-		i, len=events.length, event,
-		eventStart, eventEnd,
-		segStart, segEnd,
-		isStart, isEnd;
-	for (i=0; i<len; i++) {
-		event = events[i];
-		eventStart = event.start;
-		eventEnd = visEventEnds[i];
-		if (eventEnd > start && eventStart < end) {
-			if (eventStart < start) {
-				segStart = cloneDate(start);
-				isStart = false;
-			}else{
-				segStart = eventStart;
-				isStart = true;
-			}
-			if (eventEnd > end) {
-				segEnd = cloneDate(end);
-				isEnd = false;
-			}else{
-				segEnd = eventEnd;
-				isEnd = true;
-			}
-			segs.push({
-				event: event,
-				start: segStart,
-				end: segEnd,
-				isStart: isStart,
-				isEnd: isEnd,
-				msLength: segEnd - segStart
-			});
-		}
-	}
-	return segs.sort(segCmp);
-}
+	// Compute the value to feed into setRange. Overrides superclass.
+	computeRange: function(date) {
+		var range = View.prototype.computeRange.call(this, date); // get value from the super-method
 
+		// year and month views should be aligned with weeks. this is already done for week
+		if (/year|month/.test(range.intervalUnit)) {
+			range.start.startOf('week');
+			range.start = this.skipHiddenDays(range.start);
 
-// event rendering calculation utilities
-function stackSegs(segs) {
-	var levels = [],
-		i, len = segs.length, seg,
-		j, collide, k;
-	for (i=0; i<len; i++) {
-		seg = segs[i];
-		j = 0; // the level index where seg should belong
-		while (true) {
-			collide = false;
-			if (levels[j]) {
-				for (k=0; k<levels[j].length; k++) {
-					if (segsCollide(levels[j][k], seg)) {
-						collide = true;
-						break;
-					}
-				}
-			}
-			if (collide) {
-				j++;
-			}else{
-				break;
+			// make end-of-week if not already
+			if (range.end.weekday()) {
+				range.end.add(1, 'week').startOf('week');
+				range.end = this.skipHiddenDays(range.end, -1, true); // exclusively move backwards
 			}
 		}
-		if (levels[j]) {
-			levels[j].push(seg);
-		}else{
-			levels[j] = [seg];
-		}
-	}
-	return levels;
-}
-
 
+		return range;
+	},
 
-/* Event Element Binding
------------------------------------------------------------------------------*/
 
+	// Renders the view into `this.el`, which should already be assigned
+	renderDates: function() {
 
-function lazySegBind(container, segs, bindHandlers) {
-	container.unbind('mouseover').mouseover(function(ev) {
-		var parent=ev.target, e,
-			i, seg;
-		while (parent != this) {
-			e = parent;
-			parent = parent.parentNode;
-		}
-		if ((i = e._fci) !== undefined) {
-			e._fci = undefined;
-			seg = segs[i];
-			bindHandlers(seg.event, seg.element, seg);
-			$(ev.target).trigger(ev);
-		}
-		ev.stopPropagation();
-	});
-}
+		this.dayNumbersVisible = this.dayGrid.rowCnt > 1; // TODO: make grid responsible
+		this.weekNumbersVisible = this.opt('weekNumbers');
+		this.dayGrid.numbersVisible = this.dayNumbersVisible || this.weekNumbersVisible;
 
+		this.el.addClass('fc-basic-view').html(this.renderSkeletonHtml());
+		this.renderHead();
 
+		this.scrollerEl = this.el.find('.fc-day-grid-container');
 
-/* Element Dimensions
------------------------------------------------------------------------------*/
+		this.dayGrid.setElement(this.el.find('.fc-day-grid'));
+		this.dayGrid.renderDates(this.hasRigidRows());
+	},
 
 
-function setOuterWidth(element, width, includeMargins) {
-	for (var i=0, e; i<element.length; i++) {
-		e = $(element[i]);
-		e.width(Math.max(0, width - hsides(e, includeMargins)));
-	}
-}
+	// render the day-of-week headers
+	renderHead: function() {
+		this.headContainerEl =
+			this.el.find('.fc-head-container')
+				.html(this.dayGrid.renderHeadHtml());
+		this.headRowEl = this.headContainerEl.find('.fc-row');
+	},
 
 
-function setOuterHeight(element, height, includeMargins) {
-	for (var i=0, e; i<element.length; i++) {
-		e = $(element[i]);
-		e.height(Math.max(0, height - vsides(e, includeMargins)));
-	}
-}
+	// Unrenders the content of the view. Since we haven't separated skeleton rendering from date rendering,
+	// always completely kill the dayGrid's rendering.
+	unrenderDates: function() {
+		this.dayGrid.unrenderDates();
+		this.dayGrid.removeElement();
+	},
 
 
-function hsides(element, includeMargins) {
-	return hpadding(element) + hborders(element) + (includeMargins ? hmargins(element) : 0);
-}
+	renderBusinessHours: function() {
+		this.dayGrid.renderBusinessHours();
+	},
 
 
-function hpadding(element) {
-	return (parseFloat($.css(element[0], 'paddingLeft', true)) || 0) +
-	       (parseFloat($.css(element[0], 'paddingRight', true)) || 0);
-}
+	// Builds the HTML skeleton for the view.
+	// The day-grid component will render inside of a container defined by this HTML.
+	renderSkeletonHtml: function() {
+		return '' +
+			'<table>' +
+				'<thead class="fc-head">' +
+					'<tr>' +
+						'<td class="fc-head-container ' + this.widgetHeaderClass + '"></td>' +
+					'</tr>' +
+				'</thead>' +
+				'<tbody class="fc-body">' +
+					'<tr>' +
+						'<td class="' + this.widgetContentClass + '">' +
+							'<div class="fc-day-grid-container">' +
+								'<div class="fc-day-grid"/>' +
+							'</div>' +
+						'</td>' +
+					'</tr>' +
+				'</tbody>' +
+			'</table>';
+	},
 
 
-function hmargins(element) {
-	return (parseFloat($.css(element[0], 'marginLeft', true)) || 0) +
-	       (parseFloat($.css(element[0], 'marginRight', true)) || 0);
-}
+	// Generates an HTML attribute string for setting the width of the week number column, if it is known
+	weekNumberStyleAttr: function() {
+		if (this.weekNumberWidth !== null) {
+			return 'style="width:' + this.weekNumberWidth + 'px"';
+		}
+		return '';
+	},
 
 
-function hborders(element) {
-	return (parseFloat($.css(element[0], 'borderLeftWidth', true)) || 0) +
-	       (parseFloat($.css(element[0], 'borderRightWidth', true)) || 0);
-}
+	// Determines whether each row should have a constant height
+	hasRigidRows: function() {
+		var eventLimit = this.opt('eventLimit');
+		return eventLimit && typeof eventLimit !== 'number';
+	},
 
 
-function vsides(element, includeMargins) {
-	return vpadding(element) +  vborders(element) + (includeMargins ? vmargins(element) : 0);
-}
+	/* Dimensions
+	------------------------------------------------------------------------------------------------------------------*/
 
 
-function vpadding(element) {
-	return (parseFloat($.css(element[0], 'paddingTop', true)) || 0) +
-	       (parseFloat($.css(element[0], 'paddingBottom', true)) || 0);
-}
+	// Refreshes the horizontal dimensions of the view
+	updateWidth: function() {
+		if (this.weekNumbersVisible) {
+			// Make sure all week number cells running down the side have the same width.
+			// Record the width for cells created later.
+			this.weekNumberWidth = matchCellWidths(
+				this.el.find('.fc-week-number')
+			);
+		}
+	},
 
 
-function vmargins(element) {
-	return (parseFloat($.css(element[0], 'marginTop', true)) || 0) +
-	       (parseFloat($.css(element[0], 'marginBottom', true)) || 0);
-}
+	// Adjusts the vertical dimensions of the view to the specified values
+	setHeight: function(totalHeight, isAuto) {
+		var eventLimit = this.opt('eventLimit');
+		var scrollerHeight;
 
+		// reset all heights to be natural
+		unsetScroller(this.scrollerEl);
+		uncompensateScroll(this.headRowEl);
 
-function vborders(element) {
-	return (parseFloat($.css(element[0], 'borderTopWidth', true)) || 0) +
-	       (parseFloat($.css(element[0], 'borderBottomWidth', true)) || 0);
-}
+		this.dayGrid.removeSegPopover(); // kill the "more" popover if displayed
 
+		// is the event limit a constant level number?
+		if (eventLimit && typeof eventLimit === 'number') {
+			this.dayGrid.limitRows(eventLimit); // limit the levels first so the height can redistribute after
+		}
 
-function setMinHeight(element, height) {
-	height = (typeof height == 'number' ? height + 'px' : height);
-	element.each(function(i, _element) {
-		_element.style.cssText += ';min-height:' + height + ';_height:' + height;
-		// why can't we just use .css() ? i forget
-	});
-}
+		scrollerHeight = this.computeScrollerHeight(totalHeight);
+		this.setGridHeight(scrollerHeight, isAuto);
 
+		// is the event limit dynamically calculated?
+		if (eventLimit && typeof eventLimit !== 'number') {
+			this.dayGrid.limitRows(eventLimit); // limit the levels after the grid's row heights have been set
+		}
 
+		if (!isAuto && setPotentialScroller(this.scrollerEl, scrollerHeight)) { // using scrollbars?
 
-/* Misc Utils
------------------------------------------------------------------------------*/
+			compensateScroll(this.headRowEl, getScrollbarWidths(this.scrollerEl));
 
+			// doing the scrollbar compensation might have created text overflow which created more height. redo
+			scrollerHeight = this.computeScrollerHeight(totalHeight);
+			this.scrollerEl.height(scrollerHeight);
+		}
+	},
 
-//TODO: arraySlice
-//TODO: isFunction, grep ?
 
+	// Sets the height of just the DayGrid component in this view
+	setGridHeight: function(height, isAuto) {
+		if (isAuto) {
+			undistributeHeight(this.dayGrid.rowEls); // let the rows be their natural height with no expanding
+		}
+		else {
+			distributeHeight(this.dayGrid.rowEls, height, true); // true = compensate for height-hogging rows
+		}
+	},
 
-function noop() { }
 
+	/* Hit Areas
+	------------------------------------------------------------------------------------------------------------------*/
+	// forward all hit-related method calls to dayGrid
 
-function cmp(a, b) {
-	return a - b;
-}
 
+	prepareHits: function() {
+		this.dayGrid.prepareHits();
+	},
 
-function arrayMax(a) {
-	return Math.max.apply(Math, a);
-}
 
+	releaseHits: function() {
+		this.dayGrid.releaseHits();
+	},
 
-function zeroPad(n) {
-	return (n < 10 ? '0' : '') + n;
-}
 
+	queryHit: function(left, top) {
+		return this.dayGrid.queryHit(left, top);
+	},
 
-function smartProperty(obj, name) { // get a camel-cased/namespaced property of an object
-	if (obj[name] !== undefined) {
-		return obj[name];
-	}
-	var parts = name.split(/(?=[A-Z])/),
-		i=parts.length-1, res;
-	for (; i>=0; i--) {
-		res = obj[parts[i].toLowerCase()];
-		if (res !== undefined) {
-			return res;
-		}
-	}
-	return obj[''];
-}
 
+	getHitSpan: function(hit) {
+		return this.dayGrid.getHitSpan(hit);
+	},
 
-function htmlEscape(s) {
-	return s.replace(/&/g, '&amp;')
-		.replace(/</g, '&lt;')
-		.replace(/>/g, '&gt;')
-		.replace(/'/g, '&#039;')
-		.replace(/"/g, '&quot;')
-		.replace(/\n/g, '<br />');
-}
 
+	getHitEl: function(hit) {
+		return this.dayGrid.getHitEl(hit);
+	},
 
-function cssKey(_element) {
-	return _element.id + '/' + _element.className + '/' + _element.style.cssText.replace(/(^|;)\s*(top|left|width|height)\s*:[^;]*/ig, '');
-}
 
+	/* Events
+	------------------------------------------------------------------------------------------------------------------*/
 
-function disableTextSelection(element) {
-	element
-		.attr('unselectable', 'on')
-		.css('MozUserSelect', 'none')
-		.bind('selectstart.ui', function() { return false; });
-}
 
+	// Renders the given events onto the view and populates the segments array
+	renderEvents: function(events) {
+		this.dayGrid.renderEvents(events);
 
-/*
-function enableTextSelection(element) {
-	element
-		.attr('unselectable', 'off')
-		.css('MozUserSelect', '')
-		.unbind('selectstart.ui');
-}
-*/
+		this.updateHeight(); // must compensate for events that overflow the row
+	},
 
 
-function markFirstLast(e) {
-	e.children()
-		.removeClass('fc-first fc-last')
-		.filter(':first-child')
-			.addClass('fc-first')
-		.end()
-		.filter(':last-child')
-			.addClass('fc-last');
-}
+	// Retrieves all segment objects that are rendered in the view
+	getEventSegs: function() {
+		return this.dayGrid.getEventSegs();
+	},
 
 
-function setDayID(cell, date) {
-	cell.each(function(i, _cell) {
-		_cell.className = _cell.className.replace(/^fc-\w*/, 'fc-' + dayIDs[date.getDay()]);
-		// TODO: make a way that doesn't rely on order of classes
-	});
-}
+	// Unrenders all event elements and clears internal segment data
+	unrenderEvents: function() {
+		this.dayGrid.unrenderEvents();
 
+		// we DON'T need to call updateHeight() because:
+		// A) a renderEvents() call always happens after this, which will eventually call updateHeight()
+		// B) in IE8, this causes a flash whenever events are rerendered
+	},
 
-function getSkinCss(event, opt) {
-	var source = event.source || {};
-	var eventColor = event.color;
-	var sourceColor = source.color;
-	var optionColor = opt('eventColor');
-	var backgroundColor =
-		event.backgroundColor ||
-		eventColor ||
-		source.backgroundColor ||
-		sourceColor ||
-		opt('eventBackgroundColor') ||
-		optionColor;
-	var borderColor =
-		event.borderColor ||
-		eventColor ||
-		source.borderColor ||
-		sourceColor ||
-		opt('eventBorderColor') ||
-		optionColor;
-	var textColor =
-		event.textColor ||
-		source.textColor ||
-		opt('eventTextColor');
-	var statements = [];
-	if (backgroundColor) {
-		statements.push('background-color:' + backgroundColor);
-	}
-	if (borderColor) {
-		statements.push('border-color:' + borderColor);
-	}
-	if (textColor) {
-		statements.push('color:' + textColor);
-	}
-	return statements.join(';');
-}
 
+	/* Dragging (for both events and external elements)
+	------------------------------------------------------------------------------------------------------------------*/
 
-function applyAll(functions, thisObj, args) {
-	if ($.isFunction(functions)) {
-		functions = [ functions ];
-	}
-	if (functions) {
-		var i;
-		var ret;
-		for (i=0; i<functions.length; i++) {
-			ret = functions[i].apply(thisObj, args) || ret;
-		}
-		return ret;
-	}
-}
 
+	// A returned value of `true` signals that a mock "helper" event has been rendered.
+	renderDrag: function(dropLocation, seg) {
+		return this.dayGrid.renderDrag(dropLocation, seg);
+	},
 
-function firstDefined() {
-	for (var i=0; i<arguments.length; i++) {
-		if (arguments[i] !== undefined) {
-			return arguments[i];
-		}
-	}
-}
 
+	unrenderDrag: function() {
+		this.dayGrid.unrenderDrag();
+	},
 
-;;
 
-fcViews.month = MonthView;
+	/* Selection
+	------------------------------------------------------------------------------------------------------------------*/
 
-function MonthView(element, calendar) {
-	var t = this;
-	
-	
-	// exports
-	t.render = render;
-	
-	
-	// imports
-	BasicView.call(t, element, calendar, 'month');
-	var opt = t.opt;
-	var renderBasic = t.renderBasic;
-	var formatDate = calendar.formatDate;
-	
-	
-	
-	function render(date, delta) {
-		if (delta) {
-			addMonths(date, delta);
-			date.setDate(1);
-		}
-		var start = cloneDate(date, true);
-		start.setDate(1);
-		var end = addMonths(cloneDate(start), 1);
-		var visStart = cloneDate(start);
-		var visEnd = cloneDate(end);
-		var firstDay = opt('firstDay');
-		var nwe = opt('weekends') ? 0 : 1;
-		if (nwe) {
-			skipWeekend(visStart);
-			skipWeekend(visEnd, -1, true);
-		}
-		addDays(visStart, -((visStart.getDay() - Math.max(firstDay, nwe) + 7) % 7));
-		addDays(visEnd, (7 - visEnd.getDay() + Math.max(firstDay, nwe)) % 7);
-		var rowCnt = Math.round((visEnd - visStart) / (DAY_MS * 7));
-		if (opt('weekMode') == 'fixed') {
-			addDays(visEnd, (6 - rowCnt) * 7);
-			rowCnt = 6;
-		}
-		t.title = formatDate(start, opt('titleFormat'));
-		t.start = start;
-		t.end = end;
-		t.visStart = visStart;
-		t.visEnd = visEnd;
-		renderBasic(rowCnt, nwe ? 5 : 7, true);
-	}
-	
-	
-}
 
-;;
+	// Renders a visual indication of a selection
+	renderSelection: function(range) {
+		this.dayGrid.renderSelection(range);
+	},
 
-fcViews.basicWeek = BasicWeekView;
 
-function BasicWeekView(element, calendar) {
-	var t = this;
-	
-	
-	// exports
-	t.render = render;
-	
-	
-	// imports
-	BasicView.call(t, element, calendar, 'basicWeek');
-	var opt = t.opt;
-	var renderBasic = t.renderBasic;
-	var formatDates = calendar.formatDates;
-	
-	
-	
-	function render(date, delta) {
-		if (delta) {
-			addDays(date, delta * 7);
-		}
-		var start = addDays(cloneDate(date), -((date.getDay() - opt('firstDay') + 7) % 7));
-		var end = addDays(cloneDate(start), 7);
-		var visStart = cloneDate(start);
-		var visEnd = cloneDate(end);
-		var weekends = opt('weekends');
-		if (!weekends) {
-			skipWeekend(visStart);
-			skipWeekend(visEnd, -1, true);
-		}
-		t.title = formatDates(
-			visStart,
-			addDays(cloneDate(visEnd), -1),
-			opt('titleFormat')
-		);
-		t.start = start;
-		t.end = end;
-		t.visStart = visStart;
-		t.visEnd = visEnd;
-		renderBasic(1, weekends ? 7 : 5, false);
+	// Unrenders a visual indications of a selection
+	unrenderSelection: function() {
+		this.dayGrid.unrenderSelection();
 	}
-	
-	
-}
 
-;;
+});
 
-fcViews.basicDay = BasicDayView;
 
-//TODO: when calendar's date starts out on a weekend, shouldn't happen
+// Methods that will customize the rendering behavior of the BasicView's dayGrid
+var basicDayGridMethods = {
 
 
-function BasicDayView(element, calendar) {
-	var t = this;
-	
-	
-	// exports
-	t.render = render;
-	
-	
-	// imports
-	BasicView.call(t, element, calendar, 'basicDay');
-	var opt = t.opt;
-	var renderBasic = t.renderBasic;
-	var formatDate = calendar.formatDate;
-	
-	
-	
-	function render(date, delta) {
-		if (delta) {
-			addDays(date, delta);
-			if (!opt('weekends')) {
-				skipWeekend(date, delta < 0 ? -1 : 1);
-			}
+	// Generates the HTML that will go before the day-of week header cells
+	renderHeadIntroHtml: function() {
+		var view = this.view;
+
+		if (view.weekNumbersVisible) {
+			return '' +
+				'<th class="fc-week-number ' + view.widgetHeaderClass + '" ' + view.weekNumberStyleAttr() + '>' +
+					'<span>' + // needed for matchCellWidths
+						htmlEscape(view.opt('weekNumberTitle')) +
+					'</span>' +
+				'</th>';
 		}
-		t.title = formatDate(date, opt('titleFormat'));
-		t.start = t.visStart = cloneDate(date, true);
-		t.end = t.visEnd = addDays(cloneDate(t.start), 1);
-		renderBasic(1, 1, false);
-	}
-	
-	
-}
 
-;;
+		return '';
+	},
 
-setDefaults({
-	weekMode: 'fixed'
-});
 
+	// Generates the HTML that will go before content-skeleton cells that display the day/week numbers
+	renderNumberIntroHtml: function(row) {
+		var view = this.view;
 
-function BasicView(element, calendar, viewName) {
-	var t = this;
-	
-	
-	// exports
-	t.renderBasic = renderBasic;
-	t.setHeight = setHeight;
-	t.setWidth = setWidth;
-	t.renderDayOverlay = renderDayOverlay;
-	t.defaultSelectionEnd = defaultSelectionEnd;
-	t.renderSelection = renderSelection;
-	t.clearSelection = clearSelection;
-	t.reportDayClick = reportDayClick; // for selection (kinda hacky)
-	t.dragStart = dragStart;
-	t.dragStop = dragStop;
-	t.defaultEventEnd = defaultEventEnd;
-	t.getHoverListener = function() { return hoverListener };
-	t.colContentLeft = colContentLeft;
-	t.colContentRight = colContentRight;
-	t.dayOfWeekCol = dayOfWeekCol;
-	t.dateCell = dateCell;
-	t.cellDate = cellDate;
-	t.cellIsAllDay = function() { return true };
-	t.allDayRow = allDayRow;
-	t.allDayBounds = allDayBounds;
-	t.getRowCnt = function() { return rowCnt };
-	t.getColCnt = function() { return colCnt };
-	t.getColWidth = function() { return colWidth };
-	t.getDaySegmentContainer = function() { return daySegmentContainer };
-	
-	
-	// imports
-	View.call(t, element, calendar, viewName);
-	OverlayManager.call(t);
-	SelectionManager.call(t);
-	BasicEventRenderer.call(t);
-	var opt = t.opt;
-	var trigger = t.trigger;
-	var clearEvents = t.clearEvents;
-	var renderOverlay = t.renderOverlay;
-	var clearOverlays = t.clearOverlays;
-	var daySelectionMousedown = t.daySelectionMousedown;
-	var formatDate = calendar.formatDate;
-	
-	
-	// locals
-	
-	var table;
-	var head;
-	var headCells;
-	var body;
-	var bodyRows;
-	var bodyCells;
-	var bodyFirstCells;
-	var bodyCellTopInners;
-	var daySegmentContainer;
-	
-	var viewWidth;
-	var viewHeight;
-	var colWidth;
-	var weekNumberWidth;
-	
-	var rowCnt, colCnt;
-	var coordinateGrid;
-	var hoverListener;
-	var colContentPositions;
-	
-	var rtl, dis, dit;
-	var firstDay;
-	var nwe; // no weekends? a 0 or 1 for easy computations
-	var tm;
-	var colFormat;
-	var showWeekNumbers;
-	var weekNumberTitle;
-	var weekNumberFormat;
-	
-	
-	
-	/* Rendering
-	------------------------------------------------------------*/
-	
-	
-	disableTextSelection(element.addClass('fc-grid'));
-	
-	
-	function renderBasic(r, c, showNumbers) {
-		rowCnt = r;
-		colCnt = c;
-		updateOptions();
-		var firstTime = !body;
-		if (firstTime) {
-			buildEventContainer();
-		}else{
-			clearEvents();
+		if (view.weekNumbersVisible) {
+			return '' +
+				'<td class="fc-week-number" ' + view.weekNumberStyleAttr() + '>' +
+					'<span>' + // needed for matchCellWidths
+						this.getCellDate(row, 0).format('w') +
+					'</span>' +
+				'</td>';
 		}
-		buildTable(showNumbers);
-	}
-	
-	
-	
-	function updateOptions() {
-		rtl = opt('isRTL');
-		if (rtl) {
-			dis = -1;
-			dit = colCnt - 1;
-		}else{
-			dis = 1;
-			dit = 0;
-		}
-		firstDay = opt('firstDay');
-		nwe = opt('weekends') ? 0 : 1;
-		tm = opt('theme') ? 'ui' : 'fc';
-		colFormat = opt('columnFormat');
 
-		// week # options. (TODO: bad, logic also in other views)
-		showWeekNumbers = opt('weekNumbers');
-		weekNumberTitle = opt('weekNumberTitle');
-		if (opt('weekNumberCalculation') != 'iso') {
-			weekNumberFormat = "w";
-		}
-		else {
-			weekNumberFormat = "W";
-		}
-	}
-	
-	
-	
-	function buildEventContainer() {
-		daySegmentContainer =
-			$("<div style='position:absolute;z-index:8;top:0;left:0'/>")
-				.appendTo(element);
-	}
-	
-	
-	
-	function buildTable(showNumbers) {
-		var html = '';
-		var i, j;
-		var headerClass = tm + "-widget-header";
-		var contentClass = tm + "-widget-content";
-		var month = t.start.getMonth();
-		var today = clearTime(new Date());
-		var cellDate; // not to be confused with local function. TODO: better names
-		var cellClasses;
-		var cell;
+		return '';
+	},
+
 
-		html += "<table class='fc-border-separate' style='width:100%' cellspacing='0'>" +
-		        "<thead>" +
-		        "<tr>";
+	// Generates the HTML that goes before the day bg cells for each day-row
+	renderBgIntroHtml: function() {
+		var view = this.view;
 
-		if (showWeekNumbers) {
-			html += "<th class='fc-week-number " + headerClass + "'/>";
+		if (view.weekNumbersVisible) {
+			return '<td class="fc-week-number ' + view.widgetContentClass + '" ' +
+				view.weekNumberStyleAttr() + '></td>';
 		}
 
-		for (i=0; i<colCnt; i++) {
-			html += "<th class='fc-day-header fc-" + dayIDs[i] + " " + headerClass + "'/>";
+		return '';
+	},
+
+
+	// Generates the HTML that goes before every other type of row generated by DayGrid.
+	// Affects helper-skeleton and highlight-skeleton rows.
+	renderIntroHtml: function() {
+		var view = this.view;
+
+		if (view.weekNumbersVisible) {
+			return '<td class="fc-week-number" ' + view.weekNumberStyleAttr() + '></td>';
 		}
 
-		html += "</tr>" +
-		        "</thead>" +
-		        "<tbody>";
+		return '';
+	}
 
-		for (i=0; i<rowCnt; i++) {
-			html += "<tr class='fc-week'>";
+};
 
-			if (showWeekNumbers) {
-				html += "<td class='fc-week-number " + contentClass + "'>" +
-				        "<div/>" +
-				        "</td>";
-			}
+;;
 
-			for (j=0; j<colCnt; j++) {
-				cellDate = _cellDate(i, j); // a little confusing. cellDate is local variable. _cellDate is private function
+/* A month view with day cells running in rows (one-per-week) and columns
+----------------------------------------------------------------------------------------------------------------------*/
 
-				cellClasses = [
-					'fc-day',
-					'fc-' + dayIDs[cellDate.getDay()],
-					contentClass
-				];
-				if (cellDate.getMonth() != month) {
-					cellClasses.push('fc-other-month');
-				}
-				if (+cellDate == +today) {
-					cellClasses.push('fc-today');
-					cellClasses.push(tm + '-state-highlight');
-				}
+var MonthView = FC.MonthView = BasicView.extend({
 
-				html += "<td" +
-				        " class='" + cellClasses.join(' ') + "'" +
-				        " data-date='" + formatDate(cellDate, 'yyyy-MM-dd') + "'" +
-				        ">" + 
-				        "<div>";
-				if (showNumbers) {
-					html += "<div class='fc-day-number'>" + cellDate.getDate() + "</div>";
-				}
-				html += "<div class='fc-day-content'>" +
-				        "<div style='position:relative'>&nbsp;</div>" +
-				        "</div>" +
-				        "</div>" +
-				        "</td>";
-			}
+	// Produces information about what range to display
+	computeRange: function(date) {
+		var range = BasicView.prototype.computeRange.call(this, date); // get value from super-method
+		var rowCnt;
 
-			html += "</tr>";
+		// ensure 6 weeks
+		if (this.isFixedWeeks()) {
+			rowCnt = Math.ceil(range.end.diff(range.start, 'weeks', true)); // could be partial weeks due to hiddenDays
+			range.end.add(6 - rowCnt, 'weeks');
 		}
-		html += "</tbody>" +
-		        "</table>";
 
-		lockHeight(); // the unlock happens later, in setHeight()...
-		if (table) {
-			table.remove();
-		}
-		table = $(html).appendTo(element);
+		return range;
+	},
 
-		head = table.find('thead');
-		headCells = head.find('.fc-day-header');
-		body = table.find('tbody');
-		bodyRows = body.find('tr');
-		bodyCells = body.find('.fc-day');
-		bodyFirstCells = bodyRows.find('td:first-child');
-		bodyCellTopInners = bodyRows.eq(0).find('.fc-day-content > div');
-		
-		markFirstLast(head.add(head.find('tr'))); // marks first+last tr/th's
-		markFirstLast(bodyRows); // marks first+last td's
-		bodyRows.eq(0).addClass('fc-first');
-		bodyRows.filter(':last').addClass('fc-last');
-	
-		if (showWeekNumbers) {
-			head.find('.fc-week-number').text(weekNumberTitle);
-		}
 
-		headCells.each(function(i, _cell) {
-			var date = indexDate(i);
-			$(_cell).text(formatDate(date, colFormat));
-		});
+	// Overrides the default BasicView behavior to have special multi-week auto-height logic
+	setGridHeight: function(height, isAuto) {
 
-		if (showWeekNumbers) {
-			body.find('.fc-week-number > div').each(function(i, _cell) {
-				var weekStart = _cellDate(i, 0);
-				$(_cell).text(formatDate(weekStart, weekNumberFormat));
-			});
-		}
-		
-		bodyCells.each(function(i, _cell) {
-			var date = indexDate(i);
-			trigger('dayRender', t, date, $(_cell));
-		});
+		isAuto = isAuto || this.opt('weekMode') === 'variable'; // LEGACY: weekMode is deprecated
 
-		dayBind(bodyCells);
-	}
-	
-	
-	
-	function setHeight(height) {
-		viewHeight = height;
-		
-		var bodyHeight = viewHeight - head.height();
-		var rowHeight;
-		var rowHeightLast;
-		var cell;
-			
-		if (opt('weekMode') == 'variable') {
-			rowHeight = rowHeightLast = Math.floor(bodyHeight / (rowCnt==1 ? 2 : 6));
-		}else{
-			rowHeight = Math.floor(bodyHeight / rowCnt);
-			rowHeightLast = bodyHeight - rowHeight * (rowCnt-1);
+		// if auto, make the height of each row the height that it would be if there were 6 weeks
+		if (isAuto) {
+			height *= this.rowCnt / 6;
 		}
-		
-		bodyFirstCells.each(function(i, _cell) {
-			if (i < rowCnt) {
-				cell = $(_cell);
-				setMinHeight(
-					cell.find('> div'),
-					(i==rowCnt-1 ? rowHeightLast : rowHeight) - vsides(cell)
-				);
-			}
-		});
-		
-		unlockHeight();
-	}
-	
-	
-	function setWidth(width) {
-		viewWidth = width;
-		colContentPositions.clear();
 
-		weekNumberWidth = 0;
-		if (showWeekNumbers) {
-			weekNumberWidth = head.find('th.fc-week-number').outerWidth();
-		}
+		distributeHeight(this.dayGrid.rowEls, height, !isAuto); // if auto, don't compensate for height-hogging rows
+	},
 
-		colWidth = Math.floor((viewWidth - weekNumberWidth) / colCnt);
-		setOuterWidth(headCells.slice(0, -1), colWidth);
-	}
-	
-	
-	
-	/* Day clicking and binding
-	-----------------------------------------------------------*/
-	
-	
-	function dayBind(days) {
-		days.click(dayClick)
-			.mousedown(daySelectionMousedown);
-	}
-	
-	
-	function dayClick(ev) {
-		if (!opt('selectable')) { // if selectable, SelectionManager will worry about dayClick
-			var date = parseISO8601($(this).data('date'));
-			trigger('dayClick', this, date, true, ev);
-		}
-	}
-	
-	
-	
-	/* Semi-transparent Overlay Helpers
-	------------------------------------------------------*/
-	
-	
-	function renderDayOverlay(overlayStart, overlayEnd, refreshCoordinateGrid) { // overlayEnd is exclusive
-		if (refreshCoordinateGrid) {
-			coordinateGrid.build();
-		}
-		var rowStart = cloneDate(t.visStart);
-		var rowEnd = addDays(cloneDate(rowStart), colCnt);
-		for (var i=0; i<rowCnt; i++) {
-			var stretchStart = new Date(Math.max(rowStart, overlayStart));
-			var stretchEnd = new Date(Math.min(rowEnd, overlayEnd));
-			if (stretchStart < stretchEnd) {
-				var colStart, colEnd;
-				if (rtl) {
-					colStart = dayDiff(stretchEnd, rowStart)*dis+dit+1;
-					colEnd = dayDiff(stretchStart, rowStart)*dis+dit+1;
-				}else{
-					colStart = dayDiff(stretchStart, rowStart);
-					colEnd = dayDiff(stretchEnd, rowStart);
-				}
-				dayBind(
-					renderCellOverlay(i, colStart, i, colEnd-1)
-				);
-			}
-			addDays(rowStart, 7);
-			addDays(rowEnd, 7);
-		}
-	}
-	
-	
-	function renderCellOverlay(row0, col0, row1, col1) { // row1,col1 is inclusive
-		var rect = coordinateGrid.rect(row0, col0, row1, col1, element);
-		return renderOverlay(rect, element);
-	}
-	
-	
-	
-	/* Selection
-	-----------------------------------------------------------------------*/
-	
-	
-	function defaultSelectionEnd(startDate, allDay) {
-		return cloneDate(startDate);
-	}
-	
-	
-	function renderSelection(startDate, endDate, allDay) {
-		renderDayOverlay(startDate, addDays(cloneDate(endDate), 1), true); // rebuild every time???
-	}
-	
-	
-	function clearSelection() {
-		clearOverlays();
-	}
-	
-	
-	function reportDayClick(date, allDay, ev) {
-		var cell = dateCell(date);
-		var _element = bodyCells[cell.row*colCnt + cell.col];
-		trigger('dayClick', _element, date, allDay, ev);
-	}
-	
-	
-	
-	/* External Dragging
-	-----------------------------------------------------------------------*/
-	
-	
-	function dragStart(_dragElement, ev, ui) {
-		hoverListener.start(function(cell) {
-			clearOverlays();
-			if (cell) {
-				renderCellOverlay(cell.row, cell.col, cell.row, cell.col);
-			}
-		}, ev);
-	}
-	
-	
-	function dragStop(_dragElement, ev, ui) {
-		var cell = hoverListener.stop();
-		clearOverlays();
-		if (cell) {
-			var d = cellDate(cell);
-			trigger('drop', _dragElement, d, true, ev, ui);
-		}
-	}
-	
-	
-	
-	/* Utilities
-	--------------------------------------------------------*/
-	
-	
-	function defaultEventEnd(event) {
-		return cloneDate(event.start);
-	}
-	
-	
-	coordinateGrid = new CoordinateGrid(function(rows, cols) {
-		var e, n, p;
-		headCells.each(function(i, _e) {
-			e = $(_e);
-			n = e.offset().left;
-			if (i) {
-				p[1] = n;
-			}
-			p = [n];
-			cols[i] = p;
-		});
-		p[1] = n + e.outerWidth();
-		bodyRows.each(function(i, _e) {
-			if (i < rowCnt) {
-				e = $(_e);
-				n = e.offset().top;
-				if (i) {
-					p[1] = n;
-				}
-				p = [n];
-				rows[i] = p;
-			}
-		});
-		p[1] = n + e.outerHeight();
-	});
-	
-	
-	hoverListener = new HoverListener(coordinateGrid);
-	
-	
-	colContentPositions = new HorizontalPositionCache(function(col) {
-		return bodyCellTopInners.eq(col);
-	});
-	
-	
-	function colContentLeft(col) {
-		return colContentPositions.left(col);
-	}
-	
-	
-	function colContentRight(col) {
-		return colContentPositions.right(col);
-	}
-	
-	
-	
-	
-	function dateCell(date) {
-		return {
-			row: Math.floor(dayDiff(date, t.visStart) / 7),
-			col: dayOfWeekCol(date.getDay())
-		};
-	}
-	
-	
-	function cellDate(cell) {
-		return _cellDate(cell.row, cell.col);
-	}
-	
-	
-	function _cellDate(row, col) {
-		return addDays(cloneDate(t.visStart), row*7 + col*dis+dit);
-		// what about weekends in middle of week?
-	}
-	
-	
-	function indexDate(index) {
-		return _cellDate(Math.floor(index/colCnt), index%colCnt);
-	}
-	
-	
-	function dayOfWeekCol(dayOfWeek) {
-		return ((dayOfWeek - Math.max(firstDay, nwe) + colCnt) % colCnt) * dis + dit;
-	}
-	
-	
-	
-	
-	function allDayRow(i) {
-		return bodyRows.eq(i);
-	}
-	
-	
-	function allDayBounds(i) {
-		var left = 0;
-		if (showWeekNumbers) {
-			left += weekNumberWidth;
+
+	isFixedWeeks: function() {
+		var weekMode = this.opt('weekMode'); // LEGACY: weekMode is deprecated
+		if (weekMode) {
+			return weekMode === 'fixed'; // if any other type of weekMode, assume NOT fixed
 		}
-		return {
-			left: left,
-			right: viewWidth
-		};
+
+		return this.opt('fixedWeekCount');
 	}
 
+});
 
+;;
 
-	// makes sure height doesn't collapse while we destroy/render new cells
-	// (this causes a bad end-user scrollbar jump)
-	// TODO: generalize this for all view rendering. (also in Calendar.js)
+fcViews.basic = {
+	'class': BasicView
+};
 
-	function lockHeight() {
-		setMinHeight(element, element.height());
-	}
+fcViews.basicDay = {
+	type: 'basic',
+	duration: { days: 1 }
+};
 
-	function unlockHeight() {
-		setMinHeight(element, 1);
-	}
-	
-}
+fcViews.basicWeek = {
+	type: 'basic',
+	duration: { weeks: 1 }
+};
 
+fcViews.month = {
+	'class': MonthView,
+	duration: { months: 1 }, // important for prev/next
+	defaults: {
+		fixedWeekCount: true
+	}
+};
 ;;
 
-function BasicEventRenderer() {
-	var t = this;
-	
-	
-	// exports
-	t.renderEvents = renderEvents;
-	t.compileDaySegs = compileSegs; // for DayEventRenderer
-	t.clearEvents = clearEvents;
-	t.bindDaySeg = bindDaySeg;
-	
-	
-	// imports
-	DayEventRenderer.call(t);
-	var opt = t.opt;
-	var trigger = t.trigger;
-	//var setOverflowHidden = t.setOverflowHidden;
-	var isEventDraggable = t.isEventDraggable;
-	var isEventResizable = t.isEventResizable;
-	var reportEvents = t.reportEvents;
-	var reportEventClear = t.reportEventClear;
-	var eventElementHandlers = t.eventElementHandlers;
-	var showEvents = t.showEvents;
-	var hideEvents = t.hideEvents;
-	var eventDrop = t.eventDrop;
-	var getDaySegmentContainer = t.getDaySegmentContainer;
-	var getHoverListener = t.getHoverListener;
-	var renderDayOverlay = t.renderDayOverlay;
-	var clearOverlays = t.clearOverlays;
-	var getRowCnt = t.getRowCnt;
-	var getColCnt = t.getColCnt;
-	var renderDaySegs = t.renderDaySegs;
-	var resizableDayEvent = t.resizableDayEvent;
-	
-	
-	
-	/* Rendering
-	--------------------------------------------------------------------*/
-	
-	
-	function renderEvents(events, modifiedEventId) {
-		reportEvents(events);
-		renderDaySegs(compileSegs(events), modifiedEventId);
-		trigger('eventAfterAllRender');
-	}
-	
-	
-	function clearEvents() {
-		reportEventClear();
-		getDaySegmentContainer().empty();
-	}
-	
-	
-	function compileSegs(events) {
-		var rowCnt = getRowCnt(),
-			colCnt = getColCnt(),
-			d1 = cloneDate(t.visStart),
-			d2 = addDays(cloneDate(d1), colCnt),
-			visEventsEnds = $.map(events, exclEndDay),
-			i, row,
-			j, level,
-			k, seg,
-			segs=[];
-		for (i=0; i<rowCnt; i++) {
-			row = stackSegs(sliceSegs(events, visEventsEnds, d1, d2));
-			for (j=0; j<row.length; j++) {
-				level = row[j];
-				for (k=0; k<level.length; k++) {
-					seg = level[k];
-					seg.row = i;
-					seg.level = j; // not needed anymore
-					segs.push(seg);
-				}
-			}
-			addDays(d1, 7);
-			addDays(d2, 7);
-		}
-		return segs;
-	}
-	
-	
-	function bindDaySeg(event, eventElement, seg) {
-		if (isEventDraggable(event)) {
-			draggableDayEvent(event, eventElement);
-		}
-		if (seg.isEnd && isEventResizable(event)) {
-			resizableDayEvent(event, eventElement, seg);
-		}
-		eventElementHandlers(event, eventElement);
-			// needs to be after, because resizableDayEvent might stopImmediatePropagation on click
-	}
-	
-	
-	
-	/* Dragging
-	----------------------------------------------------------------------------*/
-	
-	
-	function draggableDayEvent(event, eventElement) {
-		var hoverListener = getHoverListener();
-		var dayDelta;
-		eventElement.draggable({
-			zIndex: 9,
-			delay: 50,
-			opacity: opt('dragOpacity'),
-			revertDuration: opt('dragRevertDuration'),
-			start: function(ev, ui) {
-				trigger('eventDragStart', eventElement, event, ev, ui);
-				hideEvents(event, eventElement);
-				hoverListener.start(function(cell, origCell, rowDelta, colDelta) {
-					eventElement.draggable('option', 'revert', !cell || !rowDelta && !colDelta);
-					clearOverlays();
-					if (cell) {
-						//setOverflowHidden(true);
-						dayDelta = rowDelta*7 + colDelta * (opt('isRTL') ? -1 : 1);
-						renderDayOverlay(
-							addDays(cloneDate(event.start), dayDelta),
-							addDays(exclEndDay(event), dayDelta)
-						);
-					}else{
-						//setOverflowHidden(false);
-						dayDelta = 0;
-					}
-				}, ev, 'drag');
-			},
-			stop: function(ev, ui) {
-				hoverListener.stop();
-				clearOverlays();
-				trigger('eventDragStop', eventElement, event, ev, ui);
-				if (dayDelta) {
-					eventDrop(this, event, dayDelta, 0, event.allDay, ev, ui);
-				}else{
-					eventElement.css('filter', ''); // clear IE opacity side-effects
-					showEvents(event, eventElement);
-				}
-				//setOverflowHidden(false);
-			}
-		});
-	}
+/* An abstract class for all agenda-related views. Displays one more columns with time slots running vertically.
+----------------------------------------------------------------------------------------------------------------------*/
+// Is a manager for the TimeGrid subcomponent and possibly the DayGrid subcomponent (if allDaySlot is on).
+// Responsible for managing width/height.
 
+var AgendaView = FC.AgendaView = View.extend({
 
-}
+	timeGridClass: TimeGrid, // class used to instantiate the timeGrid. subclasses can override
+	timeGrid: null, // the main time-grid subcomponent of this view
 
-;;
+	dayGridClass: DayGrid, // class used to instantiate the dayGrid. subclasses can override
+	dayGrid: null, // the "all-day" subcomponent. if all-day is turned off, this will be null
 
-fcViews.agendaWeek = AgendaWeekView;
+	axisWidth: null, // the width of the time axis running down the side
 
-function AgendaWeekView(element, calendar) {
-	var t = this;
-	
-	
-	// exports
-	t.render = render;
-	
-	
-	// imports
-	AgendaView.call(t, element, calendar, 'agendaWeek');
-	var opt = t.opt;
-	var renderAgenda = t.renderAgenda;
-	var formatDates = calendar.formatDates;
-	
-	
-	
-	function render(date, delta) {
-		if (delta) {
-			addDays(date, delta * 7);
-		}
-		var start = addDays(cloneDate(date), -((date.getDay() - opt('firstDay') + 7) % 7));
-		var end = addDays(cloneDate(start), 7);
-		var visStart = cloneDate(start);
-		var visEnd = cloneDate(end);
-		var weekends = opt('weekends');
-		if (!weekends) {
-			skipWeekend(visStart);
-			skipWeekend(visEnd, -1, true);
-		}
-		t.title = formatDates(
-			visStart,
-			addDays(cloneDate(visEnd), -1),
-			opt('titleFormat')
-		);
-		t.start = start;
-		t.end = end;
-		t.visStart = visStart;
-		t.visEnd = visEnd;
-		renderAgenda(weekends ? 7 : 5);
-	}
-	
+	headContainerEl: null, // div that hold's the timeGrid's rendered date header
+	noScrollRowEls: null, // set of fake row elements that must compensate when scrollerEl has scrollbars
 
-}
+	// when the time-grid isn't tall enough to occupy the given height, we render an <hr> underneath
+	bottomRuleEl: null,
+	bottomRuleHeight: null,
 
-;;
 
-fcViews.agendaDay = AgendaDayView;
+	initialize: function() {
+		this.timeGrid = this.instantiateTimeGrid();
 
-function AgendaDayView(element, calendar) {
-	var t = this;
-	
-	
-	// exports
-	t.render = render;
-	
-	
-	// imports
-	AgendaView.call(t, element, calendar, 'agendaDay');
-	var opt = t.opt;
-	var renderAgenda = t.renderAgenda;
-	var formatDate = calendar.formatDate;
-	
-	
-	
-	function render(date, delta) {
-		if (delta) {
-			addDays(date, delta);
-			if (!opt('weekends')) {
-				skipWeekend(date, delta < 0 ? -1 : 1);
-			}
+		if (this.opt('allDaySlot')) { // should we display the "all-day" area?
+			this.dayGrid = this.instantiateDayGrid(); // the all-day subcomponent of this view
 		}
-		var start = cloneDate(date, true);
-		var end = addDays(cloneDate(start), 1);
-		t.title = formatDate(date, opt('titleFormat'));
-		t.start = t.visStart = start;
-		t.end = t.visEnd = end;
-		renderAgenda(1);
-	}
-	
+	},
 
-}
 
-;;
+	// Instantiates the TimeGrid object this view needs. Draws from this.timeGridClass
+	instantiateTimeGrid: function() {
+		var subclass = this.timeGridClass.extend(agendaTimeGridMethods);
 
-setDefaults({
-	allDaySlot: true,
-	allDayText: 'all-day',
-	firstHour: 6,
-	slotMinutes: 30,
-	defaultEventMinutes: 120,
-	axisFormat: 'h(:mm)tt',
-	timeFormat: {
-		agenda: 'h:mm{ - h:mm}'
-	},
-	dragOpacity: {
-		agenda: .5
-	},
-	minTime: 0,
-	maxTime: 24
-});
+		return new subclass(this);
+	},
 
 
-// TODO: make it work in quirks mode (event corners, all-day height)
-// TODO: test liquid width, especially in IE6
+	// Instantiates the DayGrid object this view might need. Draws from this.dayGridClass
+	instantiateDayGrid: function() {
+		var subclass = this.dayGridClass.extend(agendaDayGridMethods);
 
+		return new subclass(this);
+	},
 
-function AgendaView(element, calendar, viewName) {
-	var t = this;
-	
-	
-	// exports
-	t.renderAgenda = renderAgenda;
-	t.setWidth = setWidth;
-	t.setHeight = setHeight;
-	t.beforeHide = beforeHide;
-	t.afterShow = afterShow;
-	t.defaultEventEnd = defaultEventEnd;
-	t.timePosition = timePosition;
-	t.dayOfWeekCol = dayOfWeekCol;
-	t.dateCell = dateCell;
-	t.cellDate = cellDate;
-	t.cellIsAllDay = cellIsAllDay;
-	t.allDayRow = getAllDayRow;
-	t.allDayBounds = allDayBounds;
-	t.getHoverListener = function() { return hoverListener };
-	t.colContentLeft = colContentLeft;
-	t.colContentRight = colContentRight;
-	t.getDaySegmentContainer = function() { return daySegmentContainer };
-	t.getSlotSegmentContainer = function() { return slotSegmentContainer };
-	t.getMinMinute = function() { return minMinute };
-	t.getMaxMinute = function() { return maxMinute };
-	t.getBodyContent = function() { return slotContent }; // !!??
-	t.getRowCnt = function() { return 1 };
-	t.getColCnt = function() { return colCnt };
-	t.getColWidth = function() { return colWidth };
-	t.getSnapHeight = function() { return snapHeight };
-	t.getSnapMinutes = function() { return snapMinutes };
-	t.defaultSelectionEnd = defaultSelectionEnd;
-	t.renderDayOverlay = renderDayOverlay;
-	t.renderSelection = renderSelection;
-	t.clearSelection = clearSelection;
-	t.reportDayClick = reportDayClick; // selection mousedown hack
-	t.dragStart = dragStart;
-	t.dragStop = dragStop;
-	
-	
-	// imports
-	View.call(t, element, calendar, viewName);
-	OverlayManager.call(t);
-	SelectionManager.call(t);
-	AgendaEventRenderer.call(t);
-	var opt = t.opt;
-	var trigger = t.trigger;
-	var clearEvents = t.clearEvents;
-	var renderOverlay = t.renderOverlay;
-	var clearOverlays = t.clearOverlays;
-	var reportSelection = t.reportSelection;
-	var unselect = t.unselect;
-	var daySelectionMousedown = t.daySelectionMousedown;
-	var slotSegHtml = t.slotSegHtml;
-	var formatDate = calendar.formatDate;
-	
-	
-	// locals
-	
-	var dayTable;
-	var dayHead;
-	var dayHeadCells;
-	var dayBody;
-	var dayBodyCells;
-	var dayBodyCellInners;
-	var dayBodyFirstCell;
-	var dayBodyFirstCellStretcher;
-	var slotLayer;
-	var daySegmentContainer;
-	var allDayTable;
-	var allDayRow;
-	var slotScroller;
-	var slotContent;
-	var slotSegmentContainer;
-	var slotTable;
-	var slotTableFirstInner;
-	var axisFirstCells;
-	var gutterCells;
-	var selectionHelper;
-	
-	var viewWidth;
-	var viewHeight;
-	var axisWidth;
-	var colWidth;
-	var gutterWidth;
-	var slotHeight; // TODO: what if slotHeight changes? (see issue 650)
-
-	var snapMinutes;
-	var snapRatio; // ratio of number of "selection" slots to normal slots. (ex: 1, 2, 4)
-	var snapHeight; // holds the pixel hight of a "selection" slot
-	
-	var colCnt;
-	var slotCnt;
-	var coordinateGrid;
-	var hoverListener;
-	var colContentPositions;
-	var slotTopCache = {};
-	var savedScrollTop;
-	
-	var tm;
-	var firstDay;
-	var nwe;            // no weekends (int)
-	var rtl, dis, dit;  // day index sign / translate
-	var minMinute, maxMinute;
-	var colFormat;
-	var showWeekNumbers;
-	var weekNumberTitle;
-	var weekNumberFormat;
-	
 
-	
 	/* Rendering
-	-----------------------------------------------------------------------------*/
-	
-	
-	disableTextSelection(element.addClass('fc-agenda'));
-	
-	
-	function renderAgenda(c) {
-		colCnt = c;
-		updateOptions();
-		if (!dayTable) {
-			buildSkeleton();
-		}else{
-			clearEvents();
-		}
-		updateCells();
-	}
-	
-	
-	
-	function updateOptions() {
-		tm = opt('theme') ? 'ui' : 'fc';
-		nwe = opt('weekends') ? 0 : 1;
-		firstDay = opt('firstDay');
-		if (rtl = opt('isRTL')) {
-			dis = -1;
-			dit = colCnt - 1;
-		}else{
-			dis = 1;
-			dit = 0;
-		}
-		minMinute = parseTime(opt('minTime'));
-		maxMinute = parseTime(opt('maxTime'));
-		colFormat = opt('columnFormat');
+	------------------------------------------------------------------------------------------------------------------*/
 
-		// week # options. (TODO: bad, logic also in other views)
-		showWeekNumbers = opt('weekNumbers');
-		weekNumberTitle = opt('weekNumberTitle');
-		if (opt('weekNumberCalculation') != 'iso') {
-			weekNumberFormat = "w";
-		}
-		else {
-			weekNumberFormat = "W";
-		}
 
-		snapMinutes = opt('snapMinutes') || opt('slotMinutes');
-	}
-	
-	
-	
-	function buildSkeleton() {
-		var headerClass = tm + "-widget-header";
-		var contentClass = tm + "-widget-content";
-		var s;
-		var i;
-		var d;
-		var maxd;
-		var minutes;
-		var slotNormal = opt('slotMinutes') % 15 == 0;
-		
-		s =
-			"<table style='width:100%' class='fc-agenda-days fc-border-separate' cellspacing='0'>" +
-			"<thead>" +
-			"<tr>";
+	// Sets the display range and computes all necessary dates
+	setRange: function(range) {
+		View.prototype.setRange.call(this, range); // call the super-method
 
-		if (showWeekNumbers) {
-			s += "<th class='fc-agenda-axis fc-week-number " + headerClass + "'/>";
+		this.timeGrid.setRange(range);
+		if (this.dayGrid) {
+			this.dayGrid.setRange(range);
 		}
-		else {
-			s += "<th class='fc-agenda-axis " + headerClass + "'>&nbsp;</th>";
-		}
-
-		for (i=0; i<colCnt; i++) {
-			s +=
-				"<th class='fc- fc-col" + i + ' ' + headerClass + "'/>"; // fc- needed for setDayID
-		}
-		s +=
-			"<th class='fc-agenda-gutter " + headerClass + "'>&nbsp;</th>" +
-			"</tr>" +
-			"</thead>" +
-			"<tbody>" +
-			"<tr>" +
-			"<th class='fc-agenda-axis " + headerClass + "'>&nbsp;</th>";
-		for (i=0; i<colCnt; i++) {
-			s +=
-				"<td class='fc- fc-col" + i + ' ' + contentClass + "'>" + // fc- needed for setDayID
-				"<div>" +
-				"<div class='fc-day-content'>" +
-				"<div style='position:relative'>&nbsp;</div>" +
-				"</div>" +
-				"</div>" +
-				"</td>";
-		}
-		s +=
-			"<td class='fc-agenda-gutter " + contentClass + "'>&nbsp;</td>" +
-			"</tr>" +
-			"</tbody>" +
-			"</table>";
-		dayTable = $(s).appendTo(element);
-		dayHead = dayTable.find('thead');
-		dayHeadCells = dayHead.find('th').slice(1, -1);
-		dayBody = dayTable.find('tbody');
-		dayBodyCells = dayBody.find('td').slice(0, -1);
-		dayBodyCellInners = dayBodyCells.find('div.fc-day-content div');
-		dayBodyFirstCell = dayBodyCells.eq(0);
-		dayBodyFirstCellStretcher = dayBodyFirstCell.find('> div');
-		
-		markFirstLast(dayHead.add(dayHead.find('tr')));
-		markFirstLast(dayBody.add(dayBody.find('tr')));
-		
-		axisFirstCells = dayHead.find('th:first');
-		gutterCells = dayTable.find('.fc-agenda-gutter');
-		
-		slotLayer =
-			$("<div style='position:absolute;z-index:2;left:0;width:100%'/>")
-				.appendTo(element);
-				
-		if (opt('allDaySlot')) {
-		
-			daySegmentContainer =
-				$("<div style='position:absolute;z-index:8;top:0;left:0'/>")
-					.appendTo(slotLayer);
-		
-			s =
-				"<table style='width:100%' class='fc-agenda-allday' cellspacing='0'>" +
-				"<tr>" +
-				"<th class='" + headerClass + " fc-agenda-axis'>" + opt('allDayText') + "</th>" +
-				"<td>" +
-				"<div class='fc-day-content'><div style='position:relative'/></div>" +
-				"</td>" +
-				"<th class='" + headerClass + " fc-agenda-gutter'>&nbsp;</th>" +
-				"</tr>" +
-				"</table>";
-			allDayTable = $(s).appendTo(slotLayer);
-			allDayRow = allDayTable.find('tr');
-			
-			dayBind(allDayRow.find('td'));
-			
-			axisFirstCells = axisFirstCells.add(allDayTable.find('th:first'));
-			gutterCells = gutterCells.add(allDayTable.find('th.fc-agenda-gutter'));
-			
-			slotLayer.append(
-				"<div class='fc-agenda-divider " + headerClass + "'>" +
-				"<div class='fc-agenda-divider-inner'/>" +
-				"</div>"
-			);
-			
-		}else{
-		
-			daySegmentContainer = $([]); // in jQuery 1.4, we can just do $()
-		
-		}
-		
-		slotScroller =
-			$("<div style='position:absolute;width:100%;overflow-x:hidden;overflow-y:auto'/>")
-				.appendTo(slotLayer);
-				
-		slotContent =
-			$("<div style='position:relative;width:100%;overflow:hidden'/>")
-				.appendTo(slotScroller);
-				
-		slotSegmentContainer =
-			$("<div style='position:absolute;z-index:8;top:0;left:0'/>")
-				.appendTo(slotContent);
-		
-		s =
-			"<table class='fc-agenda-slots' style='width:100%' cellspacing='0'>" +
-			"<tbody>";
-		d = zeroDate();
-		maxd = addMinutes(cloneDate(d), maxMinute);
-		addMinutes(d, minMinute);
-		slotCnt = 0;
-		for (i=0; d < maxd; i++) {
-			minutes = d.getMinutes();
-			s +=
-				"<tr class='fc-slot" + i + ' ' + (!minutes ? '' : 'fc-minor') + "'>" +
-				"<th class='fc-agenda-axis " + headerClass + "'>" +
-				((!slotNormal || !minutes) ? formatDate(d, opt('axisFormat')) : '&nbsp;') +
-				"</th>" +
-				"<td class='" + contentClass + "'>" +
-				"<div style='position:relative'>&nbsp;</div>" +
-				"</td>" +
-				"</tr>";
-			addMinutes(d, opt('slotMinutes'));
-			slotCnt++;
-		}
-		s +=
-			"</tbody>" +
-			"</table>";
-		slotTable = $(s).appendTo(slotContent);
-		slotTableFirstInner = slotTable.find('div:first');
-		
-		slotBind(slotTable.find('td'));
-		
-		axisFirstCells = axisFirstCells.add(slotTable.find('th:first'));
-	}
-	
-	
-	
-	function updateCells() {
-		var i;
-		var headCell;
-		var bodyCell;
-		var date;
-		var today = clearTime(new Date());
+	},
 
-		if (showWeekNumbers) {
-			var weekText = formatDate(colDate(0), weekNumberFormat);
-			if (rtl) {
-				weekText = weekText + weekNumberTitle;
-			}
-			else {
-				weekText = weekNumberTitle + weekText;
-			}
-			dayHead.find('.fc-week-number').text(weekText);
-		}
 
-		for (i=0; i<colCnt; i++) {
-			date = colDate(i);
-			headCell = dayHeadCells.eq(i);
-			headCell.html(formatDate(date, colFormat));
-			bodyCell = dayBodyCells.eq(i);
-			if (+date == +today) {
-				bodyCell.addClass(tm + '-state-highlight fc-today');
-			}else{
-				bodyCell.removeClass(tm + '-state-highlight fc-today');
-			}
-			setDayID(headCell.add(bodyCell), date);
-		}
-	}
-	
-	
-	
-	function setHeight(height, dateChanged) {
-		if (height === undefined) {
-			height = viewHeight;
-		}
-		viewHeight = height;
-		slotTopCache = {};
-	
-		var headHeight = dayBody.position().top;
-		var allDayHeight = slotScroller.position().top; // including divider
-		var bodyHeight = Math.min( // total body height, including borders
-			height - headHeight,   // when scrollbars
-			slotTable.height() + allDayHeight + 1 // when no scrollbars. +1 for bottom border
-		);
-		
-		dayBodyFirstCellStretcher
-			.height(bodyHeight - vsides(dayBodyFirstCell));
-		
-		slotLayer.css('top', headHeight);
-		
-		slotScroller.height(bodyHeight - allDayHeight - 1);
-		
-		slotHeight = slotTableFirstInner.height() + 1; // +1 for border
+	// Renders the view into `this.el`, which has already been assigned
+	renderDates: function() {
 
-		snapRatio = opt('slotMinutes') / snapMinutes;
-		snapHeight = slotHeight / snapRatio;
-		
-		if (dateChanged) {
-			resetScroll();
-		}
-	}
-	
-	
-	
-	function setWidth(width) {
-		viewWidth = width;
-		colContentPositions.clear();
-		
-		axisWidth = 0;
-		setOuterWidth(
-			axisFirstCells
-				.width('')
-				.each(function(i, _cell) {
-					axisWidth = Math.max(axisWidth, $(_cell).outerWidth());
-				}),
-			axisWidth
-		);
-		
-		var slotTableWidth = slotScroller[0].clientWidth; // needs to be done after axisWidth (for IE7)
-		//slotTable.width(slotTableWidth);
-		
-		gutterWidth = slotScroller.width() - slotTableWidth;
-		if (gutterWidth) {
-			setOuterWidth(gutterCells, gutterWidth);
-			gutterCells
-				.show()
-				.prev()
-				.removeClass('fc-last');
-		}else{
-			gutterCells
-				.hide()
-				.prev()
-				.addClass('fc-last');
-		}
-		
-		colWidth = Math.floor((slotTableWidth - axisWidth) / colCnt);
-		setOuterWidth(dayHeadCells.slice(0, -1), colWidth);
-	}
-	
+		this.el.addClass('fc-agenda-view').html(this.renderSkeletonHtml());
+		this.renderHead();
 
+		// the element that wraps the time-grid that will probably scroll
+		this.scrollerEl = this.el.find('.fc-time-grid-container');
 
-	function resetScroll() {
-		var d0 = zeroDate();
-		var scrollDate = cloneDate(d0);
-		scrollDate.setHours(opt('firstHour'));
-		var top = timePosition(d0, scrollDate) + 1; // +1 for the border
-		function scroll() {
-			slotScroller.scrollTop(top);
-		}
-		scroll();
-		setTimeout(scroll, 0); // overrides any previous scroll state made by the browser
-	}
-	
-	
-	function beforeHide() {
-		savedScrollTop = slotScroller.scrollTop();
-	}
-	
-	
-	function afterShow() {
-		slotScroller.scrollTop(savedScrollTop);
-	}
-	
-	
-	
-	/* Slot/Day clicking and binding
-	-----------------------------------------------------------------------*/
-	
+		this.timeGrid.setElement(this.el.find('.fc-time-grid'));
+		this.timeGrid.renderDates();
 
-	function dayBind(cells) {
-		cells.click(slotClick)
-			.mousedown(daySelectionMousedown);
-	}
+		// the <hr> that sometimes displays under the time-grid
+		this.bottomRuleEl = $('<hr class="fc-divider ' + this.widgetHeaderClass + '"/>')
+			.appendTo(this.timeGrid.el); // inject it into the time-grid
 
+		if (this.dayGrid) {
+			this.dayGrid.setElement(this.el.find('.fc-day-grid'));
+			this.dayGrid.renderDates();
 
-	function slotBind(cells) {
-		cells.click(slotClick)
-			.mousedown(slotSelectionMousedown);
-	}
-	
-	
-	function slotClick(ev) {
-		if (!opt('selectable')) { // if selectable, SelectionManager will worry about dayClick
-			var col = Math.min(colCnt-1, Math.floor((ev.pageX - dayTable.offset().left - axisWidth) / colWidth));
-			var date = colDate(col);
-			var rowMatch = this.parentNode.className.match(/fc-slot(\d+)/); // TODO: maybe use data
-			if (rowMatch) {
-				var mins = parseInt(rowMatch[1]) * opt('slotMinutes');
-				var hours = Math.floor(mins/60);
-				date.setHours(hours);
-				date.setMinutes(mins%60 + minMinute);
-				trigger('dayClick', dayBodyCells[col], date, false, ev);
-			}else{
-				trigger('dayClick', dayBodyCells[col], date, true, ev);
-			}
+			// have the day-grid extend it's coordinate area over the <hr> dividing the two grids
+			this.dayGrid.bottomCoordPadding = this.dayGrid.el.next('hr').outerHeight();
 		}
-	}
-	
-	
-	
-	/* Semi-transparent Overlay Helpers
-	-----------------------------------------------------*/
-	
 
-	function renderDayOverlay(startDate, endDate, refreshCoordinateGrid) { // endDate is exclusive
-		if (refreshCoordinateGrid) {
-			coordinateGrid.build();
-		}
-		var visStart = cloneDate(t.visStart);
-		var startCol, endCol;
-		if (rtl) {
-			startCol = dayDiff(endDate, visStart)*dis+dit+1;
-			endCol = dayDiff(startDate, visStart)*dis+dit+1;
-		}else{
-			startCol = dayDiff(startDate, visStart);
-			endCol = dayDiff(endDate, visStart);
-		}
-		startCol = Math.max(0, startCol);
-		endCol = Math.min(colCnt, endCol);
-		if (startCol < endCol) {
-			dayBind(
-				renderCellOverlay(0, startCol, 0, endCol-1)
-			);
-		}
-	}
-	
-	
-	function renderCellOverlay(row0, col0, row1, col1) { // only for all-day?
-		var rect = coordinateGrid.rect(row0, col0, row1, col1, slotLayer);
-		return renderOverlay(rect, slotLayer);
-	}
-	
+		this.noScrollRowEls = this.el.find('.fc-row:not(.fc-scroller *)'); // fake rows not within the scroller
+	},
 
-	function renderSlotOverlay(overlayStart, overlayEnd) {
-		var dayStart = cloneDate(t.visStart);
-		var dayEnd = addDays(cloneDate(dayStart), 1);
-		for (var i=0; i<colCnt; i++) {
-			var stretchStart = new Date(Math.max(dayStart, overlayStart));
-			var stretchEnd = new Date(Math.min(dayEnd, overlayEnd));
-			if (stretchStart < stretchEnd) {
-				var col = i*dis+dit;
-				var rect = coordinateGrid.rect(0, col, 0, col, slotContent); // only use it for horizontal coords
-				var top = timePosition(dayStart, stretchStart);
-				var bottom = timePosition(dayStart, stretchEnd);
-				rect.top = top;
-				rect.height = bottom - top;
-				slotBind(
-					renderOverlay(rect, slotContent)
-				);
-			}
-			addDays(dayStart, 1);
-			addDays(dayEnd, 1);
-		}
-	}
-	
-	
-	
-	/* Coordinate Utilities
-	-----------------------------------------------------------------------------*/
-	
-	
-	coordinateGrid = new CoordinateGrid(function(rows, cols) {
-		var e, n, p;
-		dayHeadCells.each(function(i, _e) {
-			e = $(_e);
-			n = e.offset().left;
-			if (i) {
-				p[1] = n;
-			}
-			p = [n];
-			cols[i] = p;
-		});
-		p[1] = n + e.outerWidth();
-		if (opt('allDaySlot')) {
-			e = allDayRow;
-			n = e.offset().top;
-			rows[0] = [n, n+e.outerHeight()];
-		}
-		var slotTableTop = slotContent.offset().top;
-		var slotScrollerTop = slotScroller.offset().top;
-		var slotScrollerBottom = slotScrollerTop + slotScroller.outerHeight();
-		function constrain(n) {
-			return Math.max(slotScrollerTop, Math.min(slotScrollerBottom, n));
-		}
-		for (var i=0; i<slotCnt*snapRatio; i++) { // adapt slot count to increased/decreased selection slot count
-			rows.push([
-				constrain(slotTableTop + snapHeight*i),
-				constrain(slotTableTop + snapHeight*(i+1))
-			]);
-		}
-	});
-	
-	
-	hoverListener = new HoverListener(coordinateGrid);
-	
-	
-	colContentPositions = new HorizontalPositionCache(function(col) {
-		return dayBodyCellInners.eq(col);
-	});
-	
-	
-	function colContentLeft(col) {
-		return colContentPositions.left(col);
-	}
-	
-	
-	function colContentRight(col) {
-		return colContentPositions.right(col);
-	}
-	
-	
-	
-	
-	function dateCell(date) { // "cell" terminology is now confusing
-		return {
-			row: Math.floor(dayDiff(date, t.visStart) / 7),
-			col: dayOfWeekCol(date.getDay())
-		};
-	}
-	
-	
-	function cellDate(cell) {
-		var d = colDate(cell.col);
-		var slotIndex = cell.row;
-		if (opt('allDaySlot')) {
-			slotIndex--;
-		}
-		if (slotIndex >= 0) {
-			addMinutes(d, minMinute + slotIndex * snapMinutes);
-		}
-		return d;
-	}
-	
-	
-	function colDate(col) { // returns dates with 00:00:00
-		return addDays(cloneDate(t.visStart), col*dis+dit);
-	}
-	
-	
-	function cellIsAllDay(cell) {
-		return opt('allDaySlot') && !cell.row;
-	}
-	
-	
-	function dayOfWeekCol(dayOfWeek) {
-		return ((dayOfWeek - Math.max(firstDay, nwe) + colCnt) % colCnt)*dis+dit;
-	}
-	
-	
-	
-	
-	// get the Y coordinate of the given time on the given day (both Date objects)
-	function timePosition(day, time) { // both date objects. day holds 00:00 of current day
-		day = cloneDate(day, true);
-		if (time < addMinutes(cloneDate(day), minMinute)) {
-			return 0;
-		}
-		if (time >= addMinutes(cloneDate(day), maxMinute)) {
-			return slotTable.height();
-		}
-		var slotMinutes = opt('slotMinutes'),
-			minutes = time.getHours()*60 + time.getMinutes() - minMinute,
-			slotI = Math.floor(minutes / slotMinutes),
-			slotTop = slotTopCache[slotI];
-		if (slotTop === undefined) {
-			slotTop = slotTopCache[slotI] = slotTable.find('tr:eq(' + slotI + ') td div')[0].offsetTop; //.position().top; // need this optimization???
-		}
-		return Math.max(0, Math.round(
-			slotTop - 1 + slotHeight * ((minutes % slotMinutes) / slotMinutes)
-		));
-	}
-	
-	
-	function allDayBounds() {
-		return {
-			left: axisWidth,
-			right: viewWidth - gutterWidth
-		}
-	}
-	
-	
-	function getAllDayRow(index) {
-		return allDayRow;
-	}
-	
-	
-	function defaultEventEnd(event) {
-		var start = cloneDate(event.start);
-		if (event.allDay) {
-			return start;
-		}
-		return addMinutes(start, opt('defaultEventMinutes'));
-	}
-	
-	
-	
-	/* Selection
-	---------------------------------------------------------------------------------*/
-	
-	
-	function defaultSelectionEnd(startDate, allDay) {
-		if (allDay) {
-			return cloneDate(startDate);
-		}
-		return addMinutes(cloneDate(startDate), opt('slotMinutes'));
-	}
-	
-	
-	function renderSelection(startDate, endDate, allDay) { // only for all-day
-		if (allDay) {
-			if (opt('allDaySlot')) {
-				renderDayOverlay(startDate, addDays(cloneDate(endDate), 1), true);
-			}
-		}else{
-			renderSlotSelection(startDate, endDate);
-		}
-	}
-	
-	
-	function renderSlotSelection(startDate, endDate) {
-		var helperOption = opt('selectHelper');
-		coordinateGrid.build();
-		if (helperOption) {
-			var col = dayDiff(startDate, t.visStart) * dis + dit;
-			if (col >= 0 && col < colCnt) { // only works when times are on same day
-				var rect = coordinateGrid.rect(0, col, 0, col, slotContent); // only for horizontal coords
-				var top = timePosition(startDate, startDate);
-				var bottom = timePosition(startDate, endDate);
-				if (bottom > top) { // protect against selections that are entirely before or after visible range
-					rect.top = top;
-					rect.height = bottom - top;
-					rect.left += 2;
-					rect.width -= 5;
-					if ($.isFunction(helperOption)) {
-						var helperRes = helperOption(startDate, endDate);
-						if (helperRes) {
-							rect.position = 'absolute';
-							rect.zIndex = 8;
-							selectionHelper = $(helperRes)
-								.css(rect)
-								.appendTo(slotContent);
-						}
-					}else{
-						rect.isStart = true; // conside rect a "seg" now
-						rect.isEnd = true;   //
-						selectionHelper = $(slotSegHtml(
-							{
-								title: '',
-								start: startDate,
-								end: endDate,
-								className: ['fc-select-helper'],
-								editable: false
-							},
-							rect
-						));
-						selectionHelper.css('opacity', opt('dragOpacity'));
-					}
-					if (selectionHelper) {
-						slotBind(selectionHelper);
-						slotContent.append(selectionHelper);
-						setOuterWidth(selectionHelper, rect.width, true); // needs to be after appended
-						setOuterHeight(selectionHelper, rect.height, true);
-					}
-				}
-			}
-		}else{
-			renderSlotOverlay(startDate, endDate);
-		}
-	}
-	
-	
-	function clearSelection() {
-		clearOverlays();
-		if (selectionHelper) {
-			selectionHelper.remove();
-			selectionHelper = null;
+
+	// render the day-of-week headers
+	renderHead: function() {
+		this.headContainerEl =
+			this.el.find('.fc-head-container')
+				.html(this.timeGrid.renderHeadHtml());
+	},
+
+
+	// Unrenders the content of the view. Since we haven't separated skeleton rendering from date rendering,
+	// always completely kill each grid's rendering.
+	unrenderDates: function() {
+		this.timeGrid.unrenderDates();
+		this.timeGrid.removeElement();
+
+		if (this.dayGrid) {
+			this.dayGrid.unrenderDates();
+			this.dayGrid.removeElement();
 		}
-	}
-	
-	
-	function slotSelectionMousedown(ev) {
-		if (ev.which == 1 && opt('selectable')) { // ev.which==1 means left mouse button
-			unselect(ev);
-			var dates;
-			hoverListener.start(function(cell, origCell) {
-				clearSelection();
-				if (cell && cell.col == origCell.col && !cellIsAllDay(cell)) {
-					var d1 = cellDate(origCell);
-					var d2 = cellDate(cell);
-					dates = [
-						d1,
-						addMinutes(cloneDate(d1), snapMinutes), // calculate minutes depending on selection slot minutes 
-						d2,
-						addMinutes(cloneDate(d2), snapMinutes)
-					].sort(cmp);
-					renderSlotSelection(dates[0], dates[3]);
-				}else{
-					dates = null;
-				}
-			}, ev);
-			$(document).one('mouseup', function(ev) {
-				hoverListener.stop();
-				if (dates) {
-					if (+dates[0] == +dates[1]) {
-						reportDayClick(dates[0], false, ev);
-					}
-					reportSelection(dates[0], dates[3], false, ev);
-				}
-			});
+	},
+
+
+	renderBusinessHours: function() {
+		this.timeGrid.renderBusinessHours();
+
+		if (this.dayGrid) {
+			this.dayGrid.renderBusinessHours();
 		}
-	}
-	
-	
-	function reportDayClick(date, allDay, ev) {
-		trigger('dayClick', dayBodyCells[dayOfWeekCol(date.getDay())], date, allDay, ev);
-	}
-	
-	
-	
-	/* External Dragging
-	--------------------------------------------------------------------------------*/
-	
-	
-	function dragStart(_dragElement, ev, ui) {
-		hoverListener.start(function(cell) {
-			clearOverlays();
-			if (cell) {
-				if (cellIsAllDay(cell)) {
-					renderCellOverlay(cell.row, cell.col, cell.row, cell.col);
-				}else{
-					var d1 = cellDate(cell);
-					var d2 = addMinutes(cloneDate(d1), opt('defaultEventMinutes'));
-					renderSlotOverlay(d1, d2);
-				}
-			}
-		}, ev);
-	}
-	
-	
-	function dragStop(_dragElement, ev, ui) {
-		var cell = hoverListener.stop();
-		clearOverlays();
-		if (cell) {
-			trigger('drop', _dragElement, cellDate(cell), cellIsAllDay(cell), ev, ui);
+	},
+
+
+	// Builds the HTML skeleton for the view.
+	// The day-grid and time-grid components will render inside containers defined by this HTML.
+	renderSkeletonHtml: function() {
+		return '' +
+			'<table>' +
+				'<thead class="fc-head">' +
+					'<tr>' +
+						'<td class="fc-head-container ' + this.widgetHeaderClass + '"></td>' +
+					'</tr>' +
+				'</thead>' +
+				'<tbody class="fc-body">' +
+					'<tr>' +
+						'<td class="' + this.widgetContentClass + '">' +
+							(this.dayGrid ?
+								'<div class="fc-day-grid"/>' +
+								'<hr class="fc-divider ' + this.widgetHeaderClass + '"/>' :
+								''
+								) +
+							'<div class="fc-time-grid-container">' +
+								'<div class="fc-time-grid"/>' +
+							'</div>' +
+						'</td>' +
+					'</tr>' +
+				'</tbody>' +
+			'</table>';
+	},
+
+
+	// Generates an HTML attribute string for setting the width of the axis, if it is known
+	axisStyleAttr: function() {
+		if (this.axisWidth !== null) {
+			 return 'style="width:' + this.axisWidth + 'px"';
 		}
-	}
+		return '';
+	},
 
 
-}
+	/* Dimensions
+	------------------------------------------------------------------------------------------------------------------*/
 
-;;
 
-function AgendaEventRenderer() {
-	var t = this;
-	
-	
-	// exports
-	t.renderEvents = renderEvents;
-	t.compileDaySegs = compileDaySegs; // for DayEventRenderer
-	t.clearEvents = clearEvents;
-	t.slotSegHtml = slotSegHtml;
-	t.bindDaySeg = bindDaySeg;
-	
-	
-	// imports
-	DayEventRenderer.call(t);
-	var opt = t.opt;
-	var trigger = t.trigger;
-	//var setOverflowHidden = t.setOverflowHidden;
-	var isEventDraggable = t.isEventDraggable;
-	var isEventResizable = t.isEventResizable;
-	var eventEnd = t.eventEnd;
-	var reportEvents = t.reportEvents;
-	var reportEventClear = t.reportEventClear;
-	var eventElementHandlers = t.eventElementHandlers;
-	var setHeight = t.setHeight;
-	var getDaySegmentContainer = t.getDaySegmentContainer;
-	var getSlotSegmentContainer = t.getSlotSegmentContainer;
-	var getHoverListener = t.getHoverListener;
-	var getMaxMinute = t.getMaxMinute;
-	var getMinMinute = t.getMinMinute;
-	var timePosition = t.timePosition;
-	var colContentLeft = t.colContentLeft;
-	var colContentRight = t.colContentRight;
-	var renderDaySegs = t.renderDaySegs;
-	var resizableDayEvent = t.resizableDayEvent; // TODO: streamline binding architecture
-	var getColCnt = t.getColCnt;
-	var getColWidth = t.getColWidth;
-	var getSnapHeight = t.getSnapHeight;
-	var getSnapMinutes = t.getSnapMinutes;
-	var getBodyContent = t.getBodyContent;
-	var reportEventElement = t.reportEventElement;
-	var showEvents = t.showEvents;
-	var hideEvents = t.hideEvents;
-	var eventDrop = t.eventDrop;
-	var eventResize = t.eventResize;
-	var renderDayOverlay = t.renderDayOverlay;
-	var clearOverlays = t.clearOverlays;
-	var calendar = t.calendar;
-	var formatDate = calendar.formatDate;
-	var formatDates = calendar.formatDates;
-	
-	
-	
-	/* Rendering
-	----------------------------------------------------------------------------*/
-	
+	updateSize: function(isResize) {
+		this.timeGrid.updateSize(isResize);
 
-	function renderEvents(events, modifiedEventId) {
-		reportEvents(events);
-		var i, len=events.length,
-			dayEvents=[],
-			slotEvents=[];
-		for (i=0; i<len; i++) {
-			if (events[i].allDay) {
-				dayEvents.push(events[i]);
-			}else{
-				slotEvents.push(events[i]);
-			}
-		}
-		if (opt('allDaySlot')) {
-			renderDaySegs(compileDaySegs(dayEvents), modifiedEventId);
-			setHeight(); // no params means set to viewHeight
-		}
-		renderSlotSegs(compileSlotSegs(slotEvents), modifiedEventId);
-		trigger('eventAfterAllRender');
-	}
-	
-	
-	function clearEvents() {
-		reportEventClear();
-		getDaySegmentContainer().empty();
-		getSlotSegmentContainer().empty();
-	}
-	
-	
-	function compileDaySegs(events) {
-		var levels = stackSegs(sliceSegs(events, $.map(events, exclEndDay), t.visStart, t.visEnd)),
-			i, levelCnt=levels.length, level,
-			j, seg,
-			segs=[];
-		for (i=0; i<levelCnt; i++) {
-			level = levels[i];
-			for (j=0; j<level.length; j++) {
-				seg = level[j];
-				seg.row = 0;
-				seg.level = i; // not needed anymore
-				segs.push(seg);
-			}
-		}
-		return segs;
-	}
-	
-	
-	function compileSlotSegs(events) {
-		var colCnt = getColCnt(),
-			minMinute = getMinMinute(),
-			maxMinute = getMaxMinute(),
-			d = addMinutes(cloneDate(t.visStart), minMinute),
-			visEventEnds = $.map(events, slotEventEnd),
-			i, col,
-			j, level,
-			k, seg,
-			segs=[];
-		for (i=0; i<colCnt; i++) {
-			col = stackSegs(sliceSegs(events, visEventEnds, d, addMinutes(cloneDate(d), maxMinute-minMinute)));
-			countForwardSegs(col);
-			for (j=0; j<col.length; j++) {
-				level = col[j];
-				for (k=0; k<level.length; k++) {
-					seg = level[k];
-					seg.col = i;
-					seg.level = j;
-					segs.push(seg);
-				}
-			}
-			addDays(d, 1, true);
-		}
-		return segs;
-	}
-	
-	
-	function slotEventEnd(event) {
-		if (event.end) {
-			return cloneDate(event.end);
-		}else{
-			return addMinutes(cloneDate(event.start), opt('defaultEventMinutes'));
-		}
-	}
-	
-	
-	// renders events in the 'time slots' at the bottom
-	
-	function renderSlotSegs(segs, modifiedEventId) {
-	
-		var i, segCnt=segs.length, seg,
-			event,
-			classes,
-			top, bottom,
-			colI, levelI, forward,
-			leftmost,
-			availWidth,
-			outerWidth,
-			left,
-			html='',
-			eventElements,
-			eventElement,
-			triggerRes,
-			vsideCache={},
-			hsideCache={},
-			key, val,
-			titleElement,
-			height,
-			slotSegmentContainer = getSlotSegmentContainer(),
-			rtl, dis, dit,
-			colCnt = getColCnt();
-			
-		if (rtl = opt('isRTL')) {
-			dis = -1;
-			dit = colCnt - 1;
-		}else{
-			dis = 1;
-			dit = 0;
-		}
-			
-		// calculate position/dimensions, create html
-		for (i=0; i<segCnt; i++) {
-			seg = segs[i];
-			event = seg.event;
-			top = timePosition(seg.start, seg.start);
-			bottom = timePosition(seg.start, seg.end);
-			colI = seg.col;
-			levelI = seg.level;
-			forward = seg.forward || 0;
-			leftmost = colContentLeft(colI*dis + dit);
-			availWidth = colContentRight(colI*dis + dit) - leftmost;
-			availWidth = Math.min(availWidth-6, availWidth*.95); // TODO: move this to CSS
-			if (levelI) {
-				// indented and thin
-				outerWidth = availWidth / (levelI + forward + 1);
-			}else{
-				if (forward) {
-					// moderately wide, aligned left still
-					outerWidth = ((availWidth / (forward + 1)) - (12/2)) * 2; // 12 is the predicted width of resizer =
-				}else{
-					// can be entire width, aligned left
-					outerWidth = availWidth;
-				}
-			}
-			left = leftmost +                                  // leftmost possible
-				(availWidth / (levelI + forward + 1) * levelI) // indentation
-				* dis + (rtl ? availWidth - outerWidth : 0);   // rtl
-			seg.top = top;
-			seg.left = left;
-			seg.outerWidth = outerWidth;
-			seg.outerHeight = bottom - top;
-			html += slotSegHtml(event, seg);
-		}
-		slotSegmentContainer[0].innerHTML = html; // faster than html()
-		eventElements = slotSegmentContainer.children();
-		
-		// retrieve elements, run through eventRender callback, bind event handlers
-		for (i=0; i<segCnt; i++) {
-			seg = segs[i];
-			event = seg.event;
-			eventElement = $(eventElements[i]); // faster than eq()
-			triggerRes = trigger('eventRender', event, event, eventElement);
-			if (triggerRes === false) {
-				eventElement.remove();
-			}else{
-				if (triggerRes && triggerRes !== true) {
-					eventElement.remove();
-					eventElement = $(triggerRes)
-						.css({
-							position: 'absolute',
-							top: seg.top,
-							left: seg.left
-						})
-						.appendTo(slotSegmentContainer);
-				}
-				seg.element = eventElement;
-				if (event._id === modifiedEventId) {
-					bindSlotSeg(event, eventElement, seg);
-				}else{
-					eventElement[0]._fci = i; // for lazySegBind
-				}
-				reportEventElement(event, eventElement);
-			}
-		}
-		
-		lazySegBind(slotSegmentContainer, segs, bindSlotSeg);
-		
-		// record event sides and title positions
-		for (i=0; i<segCnt; i++) {
-			seg = segs[i];
-			if (eventElement = seg.element) {
-				val = vsideCache[key = seg.key = cssKey(eventElement[0])];
-				seg.vsides = val === undefined ? (vsideCache[key] = vsides(eventElement, true)) : val;
-				val = hsideCache[key];
-				seg.hsides = val === undefined ? (hsideCache[key] = hsides(eventElement, true)) : val;
-				titleElement = eventElement.find('.fc-event-title');
-				if (titleElement.length) {
-					seg.contentTop = titleElement[0].offsetTop;
-				}
-			}
-		}
-		
-		// set all positions/dimensions at once
-		for (i=0; i<segCnt; i++) {
-			seg = segs[i];
-			if (eventElement = seg.element) {
-				eventElement[0].style.width = Math.max(0, seg.outerWidth - seg.hsides) + 'px';
-				height = Math.max(0, seg.outerHeight - seg.vsides);
-				eventElement[0].style.height = height + 'px';
-				event = seg.event;
-				if (seg.contentTop !== undefined && height - seg.contentTop < 10) {
-					// not enough room for title, put it in the time (TODO: maybe make both display:inline instead)
-					eventElement.find('div.fc-event-time')
-						.text(formatDate(event.start, opt('timeFormat')) + ' - ' + event.title);
-					eventElement.find('div.fc-event-title')
-						.remove();
-				}
-				trigger('eventAfterRender', event, event, eventElement);
-			}
-		}
-					
-	}
-	
-	
-	function slotSegHtml(event, seg) {
-		var html = "<";
-		var url = event.url;
-		var skinCss = getSkinCss(event, opt);
-		var classes = ['fc-event', 'fc-event-vert'];
-		if (isEventDraggable(event)) {
-			classes.push('fc-event-draggable');
-		}
-		if (seg.isStart) {
-			classes.push('fc-event-start');
-		}
-		if (seg.isEnd) {
-			classes.push('fc-event-end');
-		}
-		classes = classes.concat(event.className);
-		if (event.source) {
-			classes = classes.concat(event.source.className || []);
-		}
-		if (url) {
-			html += "a href='" + htmlEscape(event.url) + "'";
-		}else{
-			html += "div";
-		}
-		html +=
-			" class='" + classes.join(' ') + "'" +
-			" style='position:absolute;z-index:8;top:" + seg.top + "px;left:" + seg.left + "px;" + skinCss + "'" +
-			">" +
-			"<div class='fc-event-inner'>" +
-			"<div class='fc-event-time'>" +
-			htmlEscape(formatDates(event.start, event.end, opt('timeFormat'))) +
-			"</div>" +
-			"<div class='fc-event-title'>" +
-			htmlEscape(event.title) +
-			"</div>" +
-			"</div>" +
-			"<div class='fc-event-bg'></div>";
-		if (seg.isEnd && isEventResizable(event)) {
-			html +=
-				"<div class='ui-resizable-handle ui-resizable-s'>=</div>";
-		}
-		html +=
-			"</" + (url ? "a" : "div") + ">";
-		return html;
-	}
-	
-	
-	function bindDaySeg(event, eventElement, seg) {
-		if (isEventDraggable(event)) {
-			draggableDayEvent(event, eventElement, seg.isStart);
-		}
-		if (seg.isEnd && isEventResizable(event)) {
-			resizableDayEvent(event, eventElement, seg);
-		}
-		eventElementHandlers(event, eventElement);
-			// needs to be after, because resizableDayEvent might stopImmediatePropagation on click
-	}
-	
-	
-	function bindSlotSeg(event, eventElement, seg) {
-		var timeElement = eventElement.find('div.fc-event-time');
-		if (isEventDraggable(event)) {
-			draggableSlotEvent(event, eventElement, timeElement);
-		}
-		if (seg.isEnd && isEventResizable(event)) {
-			resizableSlotEvent(event, eventElement, timeElement);
+		View.prototype.updateSize.call(this, isResize); // call the super-method
+	},
+
+
+	// Refreshes the horizontal dimensions of the view
+	updateWidth: function() {
+		// make all axis cells line up, and record the width so newly created axis cells will have it
+		this.axisWidth = matchCellWidths(this.el.find('.fc-axis'));
+	},
+
+
+	// Adjusts the vertical dimensions of the view to the specified values
+	setHeight: function(totalHeight, isAuto) {
+		var eventLimit;
+		var scrollerHeight;
+
+		if (this.bottomRuleHeight === null) {
+			// calculate the height of the rule the very first time
+			this.bottomRuleHeight = this.bottomRuleEl.outerHeight();
 		}
-		eventElementHandlers(event, eventElement);
-	}
-	
-	
-	
-	/* Dragging
-	-----------------------------------------------------------------------------------*/
-	
-	
-	// when event starts out FULL-DAY
-	
-	function draggableDayEvent(event, eventElement, isStart) {
-		var origWidth;
-		var revert;
-		var allDay=true;
-		var dayDelta;
-		var dis = opt('isRTL') ? -1 : 1;
-		var hoverListener = getHoverListener();
-		var colWidth = getColWidth();
-		var snapHeight = getSnapHeight();
-		var snapMinutes = getSnapMinutes();
-		var minMinute = getMinMinute();
-		eventElement.draggable({
-			zIndex: 9,
-			opacity: opt('dragOpacity', 'month'), // use whatever the month view was using
-			revertDuration: opt('dragRevertDuration'),
-			start: function(ev, ui) {
-				trigger('eventDragStart', eventElement, event, ev, ui);
-				hideEvents(event, eventElement);
-				origWidth = eventElement.width();
-				hoverListener.start(function(cell, origCell, rowDelta, colDelta) {
-					clearOverlays();
-					if (cell) {
-						//setOverflowHidden(true);
-						revert = false;
-						dayDelta = colDelta * dis;
-						if (!cell.row) {
-							// on full-days
-							renderDayOverlay(
-								addDays(cloneDate(event.start), dayDelta),
-								addDays(exclEndDay(event), dayDelta)
-							);
-							resetElement();
-						}else{
-							// mouse is over bottom slots
-							if (isStart) {
-								if (allDay) {
-									// convert event to temporary slot-event
-									eventElement.width(colWidth - 10); // don't use entire width
-									setOuterHeight(
-										eventElement,
-										snapHeight * Math.round(
-											(event.end ? ((event.end - event.start) / MINUTE_MS) : opt('defaultEventMinutes')) /
-												snapMinutes
-										)
-									);
-									eventElement.draggable('option', 'grid', [colWidth, 1]);
-									allDay = false;
-								}
-							}else{
-								revert = true;
-							}
-						}
-						revert = revert || (allDay && !dayDelta);
-					}else{
-						resetElement();
-						//setOverflowHidden(false);
-						revert = true;
-					}
-					eventElement.draggable('option', 'revert', revert);
-				}, ev, 'drag');
-			},
-			stop: function(ev, ui) {
-				hoverListener.stop();
-				clearOverlays();
-				trigger('eventDragStop', eventElement, event, ev, ui);
-				if (revert) {
-					// hasn't moved or is out of bounds (draggable has already reverted)
-					resetElement();
-					eventElement.css('filter', ''); // clear IE opacity side-effects
-					showEvents(event, eventElement);
-				}else{
-					// changed!
-					var minuteDelta = 0;
-					if (!allDay) {
-						minuteDelta = Math.round((eventElement.offset().top - getBodyContent().offset().top) / snapHeight)
-							* snapMinutes
-							+ minMinute
-							- (event.start.getHours() * 60 + event.start.getMinutes());
-					}
-					eventDrop(this, event, dayDelta, minuteDelta, allDay, ev, ui);
-				}
-				//setOverflowHidden(false);
+		this.bottomRuleEl.hide(); // .show() will be called later if this <hr> is necessary
+
+		// reset all dimensions back to the original state
+		this.scrollerEl.css('overflow', '');
+		unsetScroller(this.scrollerEl);
+		uncompensateScroll(this.noScrollRowEls);
+
+		// limit number of events in the all-day area
+		if (this.dayGrid) {
+			this.dayGrid.removeSegPopover(); // kill the "more" popover if displayed
+
+			eventLimit = this.opt('eventLimit');
+			if (eventLimit && typeof eventLimit !== 'number') {
+				eventLimit = AGENDA_ALL_DAY_EVENT_LIMIT; // make sure "auto" goes to a real number
 			}
-		});
-		function resetElement() {
-			if (!allDay) {
-				eventElement
-					.width(origWidth)
-					.height('')
-					.draggable('option', 'grid', null);
-				allDay = true;
+			if (eventLimit) {
+				this.dayGrid.limitRows(eventLimit);
 			}
 		}
-	}
-	
-	
-	// when event starts out IN TIMESLOTS
-	
-	function draggableSlotEvent(event, eventElement, timeElement) {
-		var origPosition;
-		var allDay=false;
-		var dayDelta;
-		var minuteDelta;
-		var prevMinuteDelta;
-		var dis = opt('isRTL') ? -1 : 1;
-		var hoverListener = getHoverListener();
-		var colCnt = getColCnt();
-		var colWidth = getColWidth();
-		var snapHeight = getSnapHeight();
-		var snapMinutes = getSnapMinutes();
-		eventElement.draggable({
-			zIndex: 9,
-			scroll: false,
-			grid: [colWidth, snapHeight],
-			axis: colCnt==1 ? 'y' : false,
-			opacity: opt('dragOpacity'),
-			revertDuration: opt('dragRevertDuration'),
-			start: function(ev, ui) {
-				trigger('eventDragStart', eventElement, event, ev, ui);
-				hideEvents(event, eventElement);
-				origPosition = eventElement.position();
-				minuteDelta = prevMinuteDelta = 0;
-				hoverListener.start(function(cell, origCell, rowDelta, colDelta) {
-					eventElement.draggable('option', 'revert', !cell);
-					clearOverlays();
-					if (cell) {
-						dayDelta = colDelta * dis;
-						if (opt('allDaySlot') && !cell.row) {
-							// over full days
-							if (!allDay) {
-								// convert to temporary all-day event
-								allDay = true;
-								timeElement.hide();
-								eventElement.draggable('option', 'grid', null);
-							}
-							renderDayOverlay(
-								addDays(cloneDate(event.start), dayDelta),
-								addDays(exclEndDay(event), dayDelta)
-							);
-						}else{
-							// on slots
-							resetElement();
-						}
-					}
-				}, ev, 'drag');
-			},
-			drag: function(ev, ui) {
-				minuteDelta = Math.round((ui.position.top - origPosition.top) / snapHeight) * snapMinutes;
-				if (minuteDelta != prevMinuteDelta) {
-					if (!allDay) {
-						updateTimeText(minuteDelta);
-					}
-					prevMinuteDelta = minuteDelta;
-				}
-			},
-			stop: function(ev, ui) {
-				var cell = hoverListener.stop();
-				clearOverlays();
-				trigger('eventDragStop', eventElement, event, ev, ui);
-				if (cell && (dayDelta || minuteDelta || allDay)) {
-					// changed!
-					eventDrop(this, event, dayDelta, allDay ? 0 : minuteDelta, allDay, ev, ui);
-				}else{
-					// either no change or out-of-bounds (draggable has already reverted)
-					resetElement();
-					eventElement.css('filter', ''); // clear IE opacity side-effects
-					eventElement.css(origPosition); // sometimes fast drags make event revert to wrong position
-					updateTimeText(0);
-					showEvents(event, eventElement);
-				}
-			}
-		});
-		function updateTimeText(minuteDelta) {
-			var newStart = addMinutes(cloneDate(event.start), minuteDelta);
-			var newEnd;
-			if (event.end) {
-				newEnd = addMinutes(cloneDate(event.end), minuteDelta);
+
+		if (!isAuto) { // should we force dimensions of the scroll container, or let the contents be natural height?
+
+			scrollerHeight = this.computeScrollerHeight(totalHeight);
+			if (setPotentialScroller(this.scrollerEl, scrollerHeight)) { // using scrollbars?
+
+				// make the all-day and header rows lines up
+				compensateScroll(this.noScrollRowEls, getScrollbarWidths(this.scrollerEl));
+
+				// the scrollbar compensation might have changed text flow, which might affect height, so recalculate
+				// and reapply the desired height to the scroller.
+				scrollerHeight = this.computeScrollerHeight(totalHeight);
+				this.scrollerEl.height(scrollerHeight);
 			}
-			timeElement.text(formatDates(newStart, newEnd, opt('timeFormat')));
-		}
-		function resetElement() {
-			// convert back to original slot-event
-			if (allDay) {
-				timeElement.css('display', ''); // show() was causing display=inline
-				eventElement.draggable('option', 'grid', [colWidth, snapHeight]);
-				allDay = false;
+			else { // no scrollbars
+				// still, force a height and display the bottom rule (marks the end of day)
+				this.scrollerEl.height(scrollerHeight).css('overflow', 'hidden'); // in case <hr> goes outside
+				this.bottomRuleEl.show();
 			}
 		}
-	}
-	
-	
-	
-	/* Resizing
-	--------------------------------------------------------------------------------------*/
-	
-	
-	function resizableSlotEvent(event, eventElement, timeElement) {
-		var snapDelta, prevSnapDelta;
-		var snapHeight = getSnapHeight();
-		var snapMinutes = getSnapMinutes();
-		eventElement.resizable({
-			handles: {
-				s: '.ui-resizable-handle'
-			},
-			grid: snapHeight,
-			start: function(ev, ui) {
-				snapDelta = prevSnapDelta = 0;
-				hideEvents(event, eventElement);
-				eventElement.css('z-index', 9);
-				trigger('eventResizeStart', this, event, ev, ui);
-			},
-			resize: function(ev, ui) {
-				// don't rely on ui.size.height, doesn't take grid into account
-				snapDelta = Math.round((Math.max(snapHeight, eventElement.height()) - ui.originalSize.height) / snapHeight);
-				if (snapDelta != prevSnapDelta) {
-					timeElement.text(
-						formatDates(
-							event.start,
-							(!snapDelta && !event.end) ? null : // no change, so don't display time range
-								addMinutes(eventEnd(event), snapMinutes*snapDelta),
-							opt('timeFormat')
-						)
-					);
-					prevSnapDelta = snapDelta;
-				}
-			},
-			stop: function(ev, ui) {
-				trigger('eventResizeStop', this, event, ev, ui);
-				if (snapDelta) {
-					eventResize(this, event, 0, snapMinutes*snapDelta, ev, ui);
-				}else{
-					eventElement.css('z-index', 8);
-					showEvents(event, eventElement);
-					// BUG: if event was really short, need to put title back in span
-				}
-			}
-		});
-	}
-	
+	},
 
-}
 
+	// Computes the initial pre-configured scroll state prior to allowing the user to change it
+	computeInitialScroll: function() {
+		var scrollTime = moment.duration(this.opt('scrollTime'));
+		var top = this.timeGrid.computeTimeTop(scrollTime);
 
-function countForwardSegs(levels) {
-	var i, j, k, level, segForward, segBack;
-	for (i=levels.length-1; i>0; i--) {
-		level = levels[i];
-		for (j=0; j<level.length; j++) {
-			segForward = level[j];
-			for (k=0; k<levels[i-1].length; k++) {
-				segBack = levels[i-1][k];
-				if (segsCollide(segForward, segBack)) {
-					segBack.forward = Math.max(segBack.forward||0, (segForward.forward||0)+1);
-				}
-			}
+		// zoom can give weird floating-point values. rather scroll a little bit further
+		top = Math.ceil(top);
+
+		if (top) {
+			top++; // to overcome top border that slots beyond the first have. looks better
 		}
-	}
-}
 
+		return top;
+	},
 
 
-;;
+	/* Hit Areas
+	------------------------------------------------------------------------------------------------------------------*/
+	// forward all hit-related method calls to the grids (dayGrid might not be defined)
 
 
-function View(element, calendar, viewName) {
-	var t = this;
-	
-	
-	// exports
-	t.element = element;
-	t.calendar = calendar;
-	t.name = viewName;
-	t.opt = opt;
-	t.trigger = trigger;
-	//t.setOverflowHidden = setOverflowHidden;
-	t.isEventDraggable = isEventDraggable;
-	t.isEventResizable = isEventResizable;
-	t.reportEvents = reportEvents;
-	t.eventEnd = eventEnd;
-	t.reportEventElement = reportEventElement;
-	t.reportEventClear = reportEventClear;
-	t.eventElementHandlers = eventElementHandlers;
-	t.showEvents = showEvents;
-	t.hideEvents = hideEvents;
-	t.eventDrop = eventDrop;
-	t.eventResize = eventResize;
-	// t.title
-	// t.start, t.end
-	// t.visStart, t.visEnd
-	
-	
-	// imports
-	var defaultEventEnd = t.defaultEventEnd;
-	var normalizeEvent = calendar.normalizeEvent; // in EventManager
-	var reportEventChange = calendar.reportEventChange;
-	
-	
-	// locals
-	var eventsByID = {};
-	var eventElements = [];
-	var eventElementsByID = {};
-	var options = calendar.options;
-	
-	
-	
-	function opt(name, viewNameOverride) {
-		var v = options[name];
-		if (typeof v == 'object') {
-			return smartProperty(v, viewNameOverride || viewName);
+	prepareHits: function() {
+		this.timeGrid.prepareHits();
+		if (this.dayGrid) {
+			this.dayGrid.prepareHits();
 		}
-		return v;
-	}
+	},
 
-	
-	function trigger(name, thisObj) {
-		return calendar.trigger.apply(
-			calendar,
-			[name, thisObj || t].concat(Array.prototype.slice.call(arguments, 2), [t])
-		);
-	}
-	
-	
-	/*
-	function setOverflowHidden(bool) {
-		element.css('overflow', bool ? 'hidden' : '');
-	}
-	*/
-	
-	
-	function isEventDraggable(event) {
-		return isEventEditable(event) && !opt('disableDragging');
-	}
-	
-	
-	function isEventResizable(event) { // but also need to make sure the seg.isEnd == true
-		return isEventEditable(event) && !opt('disableResizing');
-	}
-	
-	
-	function isEventEditable(event) {
-		return firstDefined(event.editable, (event.source || {}).editable, opt('editable'));
-	}
-	
-	
-	
-	/* Event Data
-	------------------------------------------------------------------------------*/
-	
-	
-	// report when view receives new events
-	function reportEvents(events) { // events are already normalized at this point
-		eventsByID = {};
-		var i, len=events.length, event;
-		for (i=0; i<len; i++) {
-			event = events[i];
-			if (eventsByID[event._id]) {
-				eventsByID[event._id].push(event);
-			}else{
-				eventsByID[event._id] = [event];
-			}
-		}
-	}
-	
-	
-	// returns a Date object for an event's end
-	function eventEnd(event) {
-		return event.end ? cloneDate(event.end) : defaultEventEnd(event);
-	}
-	
-	
-	
-	/* Event Elements
-	------------------------------------------------------------------------------*/
-	
-	
-	// report when view creates an element for an event
-	function reportEventElement(event, element) {
-		eventElements.push(element);
-		if (eventElementsByID[event._id]) {
-			eventElementsByID[event._id].push(element);
-		}else{
-			eventElementsByID[event._id] = [element];
-		}
-	}
-	
-	
-	function reportEventClear() {
-		eventElements = [];
-		eventElementsByID = {};
-	}
-	
-	
-	// attaches eventClick, eventMouseover, eventMouseout
-	function eventElementHandlers(event, eventElement) {
-		eventElement
-			.click(function(ev) {
-				if (!eventElement.hasClass('ui-draggable-dragging') &&
-					!eventElement.hasClass('ui-resizable-resizing')) {
-						return trigger('eventClick', this, event, ev);
-					}
-			})
-			.hover(
-				function(ev) {
-					trigger('eventMouseover', this, event, ev);
-				},
-				function(ev) {
-					trigger('eventMouseout', this, event, ev);
-				}
-			);
-		// TODO: don't fire eventMouseover/eventMouseout *while* dragging is occuring (on subject element)
-		// TODO: same for resizing
-	}
-	
-	
-	function showEvents(event, exceptElement) {
-		eachEventElement(event, exceptElement, 'show');
-	}
-	
-	
-	function hideEvents(event, exceptElement) {
-		eachEventElement(event, exceptElement, 'hide');
-	}
-	
-	
-	function eachEventElement(event, exceptElement, funcName) {
-		var elements = eventElementsByID[event._id],
-			i, len = elements.length;
-		for (i=0; i<len; i++) {
-			if (!exceptElement || elements[i][0] != exceptElement[0]) {
-				elements[i][funcName]();
-			}
-		}
-	}
-	
-	
-	
-	/* Event Modification Reporting
-	---------------------------------------------------------------------------------*/
-	
-	
-	function eventDrop(e, event, dayDelta, minuteDelta, allDay, ev, ui) {
-		var oldAllDay = event.allDay;
-		var eventId = event._id;
-		moveEvents(eventsByID[eventId], dayDelta, minuteDelta, allDay);
-		trigger(
-			'eventDrop',
-			e,
-			event,
-			dayDelta,
-			minuteDelta,
-			allDay,
-			function() {
-				// TODO: investigate cases where this inverse technique might not work
-				moveEvents(eventsByID[eventId], -dayDelta, -minuteDelta, oldAllDay);
-				reportEventChange(eventId);
-			},
-			ev,
-			ui
-		);
-		reportEventChange(eventId);
-	}
-	
-	
-	function eventResize(e, event, dayDelta, minuteDelta, ev, ui) {
-		var eventId = event._id;
-		elongateEvents(eventsByID[eventId], dayDelta, minuteDelta);
-		trigger(
-			'eventResize',
-			e,
-			event,
-			dayDelta,
-			minuteDelta,
-			function() {
-				// TODO: investigate cases where this inverse technique might not work
-				elongateEvents(eventsByID[eventId], -dayDelta, -minuteDelta);
-				reportEventChange(eventId);
-			},
-			ev,
-			ui
-		);
-		reportEventChange(eventId);
-	}
-	
-	
-	
-	/* Event Modification Math
-	---------------------------------------------------------------------------------*/
-	
-	
-	function moveEvents(events, dayDelta, minuteDelta, allDay) {
-		minuteDelta = minuteDelta || 0;
-		for (var e, len=events.length, i=0; i<len; i++) {
-			e = events[i];
-			if (allDay !== undefined) {
-				e.allDay = allDay;
-			}
-			addMinutes(addDays(e.start, dayDelta, true), minuteDelta);
-			if (e.end) {
-				e.end = addMinutes(addDays(e.end, dayDelta, true), minuteDelta);
-			}
-			normalizeEvent(e, options);
+
+	releaseHits: function() {
+		this.timeGrid.releaseHits();
+		if (this.dayGrid) {
+			this.dayGrid.releaseHits();
 		}
-	}
-	
-	
-	function elongateEvents(events, dayDelta, minuteDelta) {
-		minuteDelta = minuteDelta || 0;
-		for (var e, len=events.length, i=0; i<len; i++) {
-			e = events[i];
-			e.end = addMinutes(addDays(eventEnd(e), dayDelta, true), minuteDelta);
-			normalizeEvent(e, options);
+	},
+
+
+	queryHit: function(left, top) {
+		var hit = this.timeGrid.queryHit(left, top);
+
+		if (!hit && this.dayGrid) {
+			hit = this.dayGrid.queryHit(left, top);
 		}
-	}
-	
 
-}
+		return hit;
+	},
 
-;;
 
-function DayEventRenderer() {
-	var t = this;
+	getHitSpan: function(hit) {
+		// TODO: hit.component is set as a hack to identify where the hit came from
+		return hit.component.getHitSpan(hit);
+	},
 
-	
-	// exports
-	t.renderDaySegs = renderDaySegs;
-	t.resizableDayEvent = resizableDayEvent;
-	
-	
-	// imports
-	var opt = t.opt;
-	var trigger = t.trigger;
-	var isEventDraggable = t.isEventDraggable;
-	var isEventResizable = t.isEventResizable;
-	var eventEnd = t.eventEnd;
-	var reportEventElement = t.reportEventElement;
-	var showEvents = t.showEvents;
-	var hideEvents = t.hideEvents;
-	var eventResize = t.eventResize;
-	var getRowCnt = t.getRowCnt;
-	var getColCnt = t.getColCnt;
-	var getColWidth = t.getColWidth;
-	var allDayRow = t.allDayRow;
-	var allDayBounds = t.allDayBounds;
-	var colContentLeft = t.colContentLeft;
-	var colContentRight = t.colContentRight;
-	var dayOfWeekCol = t.dayOfWeekCol;
-	var dateCell = t.dateCell;
-	var compileDaySegs = t.compileDaySegs;
-	var getDaySegmentContainer = t.getDaySegmentContainer;
-	var bindDaySeg = t.bindDaySeg; //TODO: streamline this
-	var formatDates = t.calendar.formatDates;
-	var renderDayOverlay = t.renderDayOverlay;
-	var clearOverlays = t.clearOverlays;
-	var clearSelection = t.clearSelection;
-	
-	
-	
-	/* Rendering
-	-----------------------------------------------------------------------------*/
-	
-	
-	function renderDaySegs(segs, modifiedEventId) {
-		var segmentContainer = getDaySegmentContainer();
-		var rowDivs;
-		var rowCnt = getRowCnt();
-		var colCnt = getColCnt();
-		var i = 0;
-		var rowI;
-		var levelI;
-		var colHeights;
-		var j;
-		var segCnt = segs.length;
-		var seg;
-		var top;
-		var k;
-		segmentContainer[0].innerHTML = daySegHTML(segs); // faster than .html()
-		daySegElementResolve(segs, segmentContainer.children());
-		daySegElementReport(segs);
-		daySegHandlers(segs, segmentContainer, modifiedEventId);
-		daySegCalcHSides(segs);
-		daySegSetWidths(segs);
-		daySegCalcHeights(segs);
-		rowDivs = getRowDivs();
-		// set row heights, calculate event tops (in relation to row top)
-		for (rowI=0; rowI<rowCnt; rowI++) {
-			levelI = 0;
-			colHeights = [];
-			for (j=0; j<colCnt; j++) {
-				colHeights[j] = 0;
-			}
-			while (i<segCnt && (seg = segs[i]).row == rowI) {
-				// loop through segs in a row
-				top = arrayMax(colHeights.slice(seg.startCol, seg.endCol));
-				seg.top = top;
-				top += seg.outerHeight;
-				for (k=seg.startCol; k<seg.endCol; k++) {
-					colHeights[k] = top;
-				}
-				i++;
-			}
-			rowDivs[rowI].height(arrayMax(colHeights));
-		}
-		daySegSetTops(segs, getRowTops(rowDivs));
-	}
-	
-	
-	function renderTempDaySegs(segs, adjustRow, adjustTop) {
-		var tempContainer = $("<div/>");
-		var elements;
-		var segmentContainer = getDaySegmentContainer();
-		var i;
-		var segCnt = segs.length;
-		var element;
-		tempContainer[0].innerHTML = daySegHTML(segs); // faster than .html()
-		elements = tempContainer.children();
-		segmentContainer.append(elements);
-		daySegElementResolve(segs, elements);
-		daySegCalcHSides(segs);
-		daySegSetWidths(segs);
-		daySegCalcHeights(segs);
-		daySegSetTops(segs, getRowTops(getRowDivs()));
-		elements = [];
-		for (i=0; i<segCnt; i++) {
-			element = segs[i].element;
-			if (element) {
-				if (segs[i].row === adjustRow) {
-					element.css('top', adjustTop);
-				}
-				elements.push(element[0]);
-			}
-		}
-		return $(elements);
-	}
-	
-	
-	function daySegHTML(segs) { // also sets seg.left and seg.outerWidth
-		var rtl = opt('isRTL');
-		var i;
-		var segCnt=segs.length;
-		var seg;
-		var event;
-		var url;
-		var classes;
-		var bounds = allDayBounds();
-		var minLeft = bounds.left;
-		var maxLeft = bounds.right;
-		var leftCol;
-		var rightCol;
-		var left;
-		var right;
-		var skinCss;
-		var html = '';
-		// calculate desired position/dimensions, create html
-		for (i=0; i<segCnt; i++) {
-			seg = segs[i];
-			event = seg.event;
-			classes = ['fc-event', 'fc-event-hori'];
-			if (isEventDraggable(event)) {
-				classes.push('fc-event-draggable');
-			}
-			if (seg.isStart) {
-				classes.push('fc-event-start');
-			}
-			if (seg.isEnd) {
-				classes.push('fc-event-end');
-			}
-			if (rtl) {
-				leftCol = dayOfWeekCol(seg.end.getDay()-1);
-				rightCol = dayOfWeekCol(seg.start.getDay());
-				left = seg.isEnd ? colContentLeft(leftCol) : minLeft;
-				right = seg.isStart ? colContentRight(rightCol) : maxLeft;
-			}else{
-				leftCol = dayOfWeekCol(seg.start.getDay());
-				rightCol = dayOfWeekCol(seg.end.getDay()-1);
-				left = seg.isStart ? colContentLeft(leftCol) : minLeft;
-				right = seg.isEnd ? colContentRight(rightCol) : maxLeft;
-			}
-			classes = classes.concat(event.className);
-			if (event.source) {
-				classes = classes.concat(event.source.className || []);
-			}
-			url = event.url;
-			skinCss = getSkinCss(event, opt);
-			if (url) {
-				html += "<a href='" + htmlEscape(url) + "'";
-			}else{
-				html += "<div";
-			}
-			html +=
-				" class='" + classes.join(' ') + "'" +
-				" style='position:absolute;z-index:8;left:"+left+"px;" + skinCss + "'" +
-				">" +
-				"<div class='fc-event-inner'>";
-			if (!event.allDay && seg.isStart) {
-				html +=
-					"<span class='fc-event-time'>" +
-					htmlEscape(formatDates(event.start, event.end, opt('timeFormat'))) +
-					"</span>";
-			}
-			html +=
-				"<span class='fc-event-title'>" + htmlEscape(event.title) + "</span>" +
-				"</div>";
-			if (seg.isEnd && isEventResizable(event)) {
-				html +=
-					"<div class='ui-resizable-handle ui-resizable-" + (rtl ? 'w' : 'e') + "'>" +
-					"&nbsp;&nbsp;&nbsp;" + // makes hit area a lot better for IE6/7
-					"</div>";
-			}
-			html +=
-				"</" + (url ? "a" : "div" ) + ">";
-			seg.left = left;
-			seg.outerWidth = right - left;
-			seg.startCol = leftCol;
-			seg.endCol = rightCol + 1; // needs to be exclusive
-		}
-		return html;
-	}
-	
-	
-	function daySegElementResolve(segs, elements) { // sets seg.element
-		var i;
-		var segCnt = segs.length;
-		var seg;
-		var event;
-		var element;
-		var triggerRes;
-		for (i=0; i<segCnt; i++) {
-			seg = segs[i];
-			event = seg.event;
-			element = $(elements[i]); // faster than .eq()
-			triggerRes = trigger('eventRender', event, event, element);
-			if (triggerRes === false) {
-				element.remove();
-			}else{
-				if (triggerRes && triggerRes !== true) {
-					triggerRes = $(triggerRes)
-						.css({
-							position: 'absolute',
-							left: seg.left
-						});
-					element.replaceWith(triggerRes);
-					element = triggerRes;
-				}
-				seg.element = element;
-			}
-		}
-	}
-	
-	
-	function daySegElementReport(segs) {
-		var i;
-		var segCnt = segs.length;
-		var seg;
-		var element;
-		for (i=0; i<segCnt; i++) {
-			seg = segs[i];
-			element = seg.element;
-			if (element) {
-				reportEventElement(seg.event, element);
-			}
-		}
-	}
-	
-	
-	function daySegHandlers(segs, segmentContainer, modifiedEventId) {
-		var i;
-		var segCnt = segs.length;
-		var seg;
-		var element;
-		var event;
-		// retrieve elements, run through eventRender callback, bind handlers
-		for (i=0; i<segCnt; i++) {
-			seg = segs[i];
-			element = seg.element;
-			if (element) {
-				event = seg.event;
-				if (event._id === modifiedEventId) {
-					bindDaySeg(event, element, seg);
-				}else{
-					element[0]._fci = i; // for lazySegBind
-				}
-			}
-		}
-		lazySegBind(segmentContainer, segs, bindDaySeg);
-	}
-	
-	
-	function daySegCalcHSides(segs) { // also sets seg.key
-		var i;
-		var segCnt = segs.length;
-		var seg;
-		var element;
-		var key, val;
-		var hsideCache = {};
-		// record event horizontal sides
-		for (i=0; i<segCnt; i++) {
-			seg = segs[i];
-			element = seg.element;
-			if (element) {
-				key = seg.key = cssKey(element[0]);
-				val = hsideCache[key];
-				if (val === undefined) {
-					val = hsideCache[key] = hsides(element, true);
-				}
-				seg.hsides = val;
-			}
-		}
-	}
-	
-	
-	function daySegSetWidths(segs) {
+
+	getHitEl: function(hit) {
+		// TODO: hit.component is set as a hack to identify where the hit came from
+		return hit.component.getHitEl(hit);
+	},
+
+
+	/* Events
+	------------------------------------------------------------------------------------------------------------------*/
+
+
+	// Renders events onto the view and populates the View's segment array
+	renderEvents: function(events) {
+		var dayEvents = [];
+		var timedEvents = [];
+		var daySegs = [];
+		var timedSegs;
 		var i;
-		var segCnt = segs.length;
-		var seg;
-		var element;
-		for (i=0; i<segCnt; i++) {
-			seg = segs[i];
-			element = seg.element;
-			if (element) {
-				element[0].style.width = Math.max(0, seg.outerWidth - seg.hsides) + 'px';
+
+		// separate the events into all-day and timed
+		for (i = 0; i < events.length; i++) {
+			if (events[i].allDay) {
+				dayEvents.push(events[i]);
 			}
-		}
-	}
-	
-	
-	function daySegCalcHeights(segs) {
-		var i;
-		var segCnt = segs.length;
-		var seg;
-		var element;
-		var key, val;
-		var vmarginCache = {};
-		// record event heights
-		for (i=0; i<segCnt; i++) {
-			seg = segs[i];
-			element = seg.element;
-			if (element) {
-				key = seg.key; // created in daySegCalcHSides
-				val = vmarginCache[key];
-				if (val === undefined) {
-					val = vmarginCache[key] = vmargins(element);
-				}
-				seg.outerHeight = element[0].offsetHeight + val;
+			else {
+				timedEvents.push(events[i]);
 			}
 		}
-	}
-	
-	
-	function getRowDivs() {
-		var i;
-		var rowCnt = getRowCnt();
-		var rowDivs = [];
-		for (i=0; i<rowCnt; i++) {
-			rowDivs[i] = allDayRow(i)
-				.find('div.fc-day-content > div'); // optimal selector?
-		}
-		return rowDivs;
-	}
-	
-	
-	function getRowTops(rowDivs) {
-		var i;
-		var rowCnt = rowDivs.length;
-		var tops = [];
-		for (i=0; i<rowCnt; i++) {
-			tops[i] = rowDivs[i][0].offsetTop; // !!?? but this means the element needs position:relative if in a table cell!!!!
-		}
-		return tops;
-	}
-	
-	
-	function daySegSetTops(segs, rowTops) { // also triggers eventAfterRender
-		var i;
-		var segCnt = segs.length;
-		var seg;
-		var element;
-		var event;
-		for (i=0; i<segCnt; i++) {
-			seg = segs[i];
-			element = seg.element;
-			if (element) {
-				element[0].style.top = rowTops[seg.row] + (seg.top||0) + 'px';
-				event = seg.event;
-				trigger('eventAfterRender', event, event, element);
-			}
+
+		// render the events in the subcomponents
+		timedSegs = this.timeGrid.renderEvents(timedEvents);
+		if (this.dayGrid) {
+			daySegs = this.dayGrid.renderEvents(dayEvents);
 		}
-	}
-	
-	
-	
-	/* Resizing
-	-----------------------------------------------------------------------------------*/
-	
-	
-	function resizableDayEvent(event, element, seg) {
-		var rtl = opt('isRTL');
-		var direction = rtl ? 'w' : 'e';
-		var handle = element.find('.ui-resizable-' + direction); // TODO: stop using this class because we aren't using jqui for this
-		var isResizing = false;
-		
-		// TODO: look into using jquery-ui mouse widget for this stuff
-		disableTextSelection(element); // prevent native <a> selection for IE
-		element
-			.mousedown(function(ev) { // prevent native <a> selection for others
-				ev.preventDefault();
-			})
-			.click(function(ev) {
-				if (isResizing) {
-					ev.preventDefault(); // prevent link from being visited (only method that worked in IE6)
-					ev.stopImmediatePropagation(); // prevent fullcalendar eventClick handler from being called
-					                               // (eventElementHandlers needs to be bound after resizableDayEvent)
-				}
-			});
-		
-		handle.mousedown(function(ev) {
-			if (ev.which != 1) {
-				return; // needs to be left mouse button
-			}
-			isResizing = true;
-			var hoverListener = t.getHoverListener();
-			var rowCnt = getRowCnt();
-			var colCnt = getColCnt();
-			var dis = rtl ? -1 : 1;
-			var dit = rtl ? colCnt-1 : 0;
-			var elementTop = element.css('top');
-			var dayDelta;
-			var helpers;
-			var eventCopy = $.extend({}, event);
-			var minCell = dateCell(event.start);
-			clearSelection();
-			$('body')
-				.css('cursor', direction + '-resize')
-				.one('mouseup', mouseup);
-			trigger('eventResizeStart', this, event, ev);
-			hoverListener.start(function(cell, origCell) {
-				if (cell) {
-					var r = Math.max(minCell.row, cell.row);
-					var c = cell.col;
-					if (rowCnt == 1) {
-						r = 0; // hack for all-day area in agenda views
-					}
-					if (r == minCell.row) {
-						if (rtl) {
-							c = Math.min(minCell.col, c);
-						}else{
-							c = Math.max(minCell.col, c);
-						}
-					}
-					dayDelta = (r*7 + c*dis+dit) - (origCell.row*7 + origCell.col*dis+dit);
-					var newEnd = addDays(eventEnd(event), dayDelta, true);
-					if (dayDelta) {
-						eventCopy.end = newEnd;
-						var oldHelpers = helpers;
-						helpers = renderTempDaySegs(compileDaySegs([eventCopy]), seg.row, elementTop);
-						helpers.find('*').css('cursor', direction + '-resize');
-						if (oldHelpers) {
-							oldHelpers.remove();
-						}
-						hideEvents(event);
-					}else{
-						if (helpers) {
-							showEvents(event);
-							helpers.remove();
-							helpers = null;
-						}
-					}
-					clearOverlays();
-					renderDayOverlay(event.start, addDays(cloneDate(newEnd), 1)); // coordinate grid already rebuild at hoverListener.start
-				}
-			}, ev);
-			
-			function mouseup(ev) {
-				trigger('eventResizeStop', this, event, ev);
-				$('body').css('cursor', '');
-				hoverListener.stop();
-				clearOverlays();
-				if (dayDelta) {
-					eventResize(this, event, dayDelta, 0, ev);
-					// event redraw will clear helpers
-				}
-				// otherwise, the drag handler already restored the old events
-				
-				setTimeout(function() { // make this happen after the element's click event
-					isResizing = false;
-				},0);
-			}
-			
-		});
-	}
-	
 
-}
+		// the all-day area is flexible and might have a lot of events, so shift the height
+		this.updateHeight();
+	},
 
-;;
 
-//BUG: unselect needs to be triggered when events are dragged+dropped
+	// Retrieves all segment objects that are rendered in the view
+	getEventSegs: function() {
+		return this.timeGrid.getEventSegs().concat(
+			this.dayGrid ? this.dayGrid.getEventSegs() : []
+		);
+	},
 
-function SelectionManager() {
-	var t = this;
-	
-	
-	// exports
-	t.select = select;
-	t.unselect = unselect;
-	t.reportSelection = reportSelection;
-	t.daySelectionMousedown = daySelectionMousedown;
-	
-	
-	// imports
-	var opt = t.opt;
-	var trigger = t.trigger;
-	var defaultSelectionEnd = t.defaultSelectionEnd;
-	var renderSelection = t.renderSelection;
-	var clearSelection = t.clearSelection;
-	
-	
-	// locals
-	var selected = false;
 
+	// Unrenders all event elements and clears internal segment data
+	unrenderEvents: function() {
 
+		// unrender the events in the subcomponents
+		this.timeGrid.unrenderEvents();
+		if (this.dayGrid) {
+			this.dayGrid.unrenderEvents();
+		}
 
-	// unselectAuto
-	if (opt('selectable') && opt('unselectAuto')) {
-		$(document).mousedown(function(ev) {
-			var ignore = opt('unselectCancel');
-			if (ignore) {
-				if ($(ev.target).parents(ignore).length) { // could be optimized to stop after first match
-					return;
-				}
-			}
-			unselect(ev);
-		});
-	}
-	
+		// we DON'T need to call updateHeight() because:
+		// A) a renderEvents() call always happens after this, which will eventually call updateHeight()
+		// B) in IE8, this causes a flash whenever events are rerendered
+	},
+
+
+	/* Dragging (for events and external elements)
+	------------------------------------------------------------------------------------------------------------------*/
 
-	function select(startDate, endDate, allDay) {
-		unselect();
-		if (!endDate) {
-			endDate = defaultSelectionEnd(startDate, allDay);
+
+	// A returned value of `true` signals that a mock "helper" event has been rendered.
+	renderDrag: function(dropLocation, seg) {
+		if (dropLocation.start.hasTime()) {
+			return this.timeGrid.renderDrag(dropLocation, seg);
 		}
-		renderSelection(startDate, endDate, allDay);
-		reportSelection(startDate, endDate, allDay);
-	}
-	
-	
-	function unselect(ev) {
-		if (selected) {
-			selected = false;
-			clearSelection();
-			trigger('unselect', null, ev);
+		else if (this.dayGrid) {
+			return this.dayGrid.renderDrag(dropLocation, seg);
 		}
-	}
-	
-	
-	function reportSelection(startDate, endDate, allDay, ev) {
-		selected = true;
-		trigger('select', null, startDate, endDate, allDay, ev);
-	}
-	
-	
-	function daySelectionMousedown(ev) { // not really a generic manager method, oh well
-		var cellDate = t.cellDate;
-		var cellIsAllDay = t.cellIsAllDay;
-		var hoverListener = t.getHoverListener();
-		var reportDayClick = t.reportDayClick; // this is hacky and sort of weird
-		if (ev.which == 1 && opt('selectable')) { // which==1 means left mouse button
-			unselect(ev);
-			var _mousedownElement = this;
-			var dates;
-			hoverListener.start(function(cell, origCell) { // TODO: maybe put cellDate/cellIsAllDay info in cell
-				clearSelection();
-				if (cell && cellIsAllDay(cell)) {
-					dates = [ cellDate(origCell), cellDate(cell) ].sort(cmp);
-					renderSelection(dates[0], dates[1], true);
-				}else{
-					dates = null;
-				}
-			}, ev);
-			$(document).one('mouseup', function(ev) {
-				hoverListener.stop();
-				if (dates) {
-					if (+dates[0] == +dates[1]) {
-						reportDayClick(dates[0], true, ev);
-					}
-					reportSelection(dates[0], dates[1], true, ev);
-				}
-			});
+	},
+
+
+	unrenderDrag: function() {
+		this.timeGrid.unrenderDrag();
+		if (this.dayGrid) {
+			this.dayGrid.unrenderDrag();
 		}
-	}
+	},
 
 
-}
+	/* Selection
+	------------------------------------------------------------------------------------------------------------------*/
 
-;;
- 
-function OverlayManager() {
-	var t = this;
-	
-	
-	// exports
-	t.renderOverlay = renderOverlay;
-	t.clearOverlays = clearOverlays;
-	
-	
-	// locals
-	var usedOverlays = [];
-	var unusedOverlays = [];
-	
-	
-	function renderOverlay(rect, parent) {
-		var e = unusedOverlays.shift();
-		if (!e) {
-			e = $("<div class='fc-cell-overlay' style='position:absolute;z-index:3'/>");
+
+	// Renders a visual indication of a selection
+	renderSelection: function(range) {
+		if (range.start.hasTime() || range.end.hasTime()) {
+			this.timeGrid.renderSelection(range);
 		}
-		if (e[0].parentNode != parent[0]) {
-			e.appendTo(parent);
+		else if (this.dayGrid) {
+			this.dayGrid.renderSelection(range);
 		}
-		usedOverlays.push(e.css(rect).show());
-		return e;
-	}
-	
+	},
+
 
-	function clearOverlays() {
-		var e;
-		while (e = usedOverlays.shift()) {
-			unusedOverlays.push(e.hide().unbind());
+	// Unrenders a visual indications of a selection
+	unrenderSelection: function() {
+		this.timeGrid.unrenderSelection();
+		if (this.dayGrid) {
+			this.dayGrid.unrenderSelection();
 		}
 	}
 
+});
 
-}
 
-;;
+// Methods that will customize the rendering behavior of the AgendaView's timeGrid
+var agendaTimeGridMethods = {
 
-function CoordinateGrid(buildFunc) {
 
-	var t = this;
-	var rows;
-	var cols;
-	
-	
-	t.build = function() {
-		rows = [];
-		cols = [];
-		buildFunc(rows, cols);
-	};
-	
-	
-	t.cell = function(x, y) {
-		var rowCnt = rows.length;
-		var colCnt = cols.length;
-		var i, r=-1, c=-1;
-		for (i=0; i<rowCnt; i++) {
-			if (y >= rows[i][0] && y < rows[i][1]) {
-				r = i;
-				break;
-			}
+	// Generates the HTML that will go before the day-of week header cells
+	renderHeadIntroHtml: function() {
+		var view = this.view;
+		var weekText;
+
+		if (view.opt('weekNumbers')) {
+			weekText = this.start.format(view.opt('smallWeekFormat'));
+
+			return '' +
+				'<th class="fc-axis fc-week-number ' + view.widgetHeaderClass + '" ' + view.axisStyleAttr() + '>' +
+					'<span>' + // needed for matchCellWidths
+						htmlEscape(weekText) +
+					'</span>' +
+				'</th>';
 		}
-		for (i=0; i<colCnt; i++) {
-			if (x >= cols[i][0] && x < cols[i][1]) {
-				c = i;
-				break;
-			}
+		else {
+			return '<th class="fc-axis ' + view.widgetHeaderClass + '" ' + view.axisStyleAttr() + '></th>';
 		}
-		return (r>=0 && c>=0) ? { row:r, col:c } : null;
-	};
-	
-	
-	t.rect = function(row0, col0, row1, col1, originElement) { // row1,col1 is inclusive
-		var origin = originElement.offset();
-		return {
-			top: rows[row0][0] - origin.top,
-			left: cols[col0][0] - origin.left,
-			width: cols[col1][1] - cols[col0][0],
-			height: rows[row1][1] - rows[row0][0]
-		};
-	};
+	},
 
-}
 
-;;
+	// Generates the HTML that goes before the bg of the TimeGrid slot area. Long vertical column.
+	renderBgIntroHtml: function() {
+		var view = this.view;
 
-function HoverListener(coordinateGrid) {
+		return '<td class="fc-axis ' + view.widgetContentClass + '" ' + view.axisStyleAttr() + '></td>';
+	},
 
 
-	var t = this;
-	var bindType;
-	var change;
-	var firstCell;
-	var cell;
-	
-	
-	t.start = function(_change, ev, _bindType) {
-		change = _change;
-		firstCell = cell = null;
-		coordinateGrid.build();
-		mouse(ev);
-		bindType = _bindType || 'mousemove';
-		$(document).bind(bindType, mouse);
-	};
-	
-	
-	function mouse(ev) {
-		_fixUIEvent(ev); // see below
-		var newCell = coordinateGrid.cell(ev.pageX, ev.pageY);
-		if (!newCell != !cell || newCell && (newCell.row != cell.row || newCell.col != cell.col)) {
-			if (newCell) {
-				if (!firstCell) {
-					firstCell = newCell;
-				}
-				change(newCell, firstCell, newCell.row-firstCell.row, newCell.col-firstCell.col);
-			}else{
-				change(newCell, firstCell);
-			}
-			cell = newCell;
-		}
+	// Generates the HTML that goes before all other types of cells.
+	// Affects content-skeleton, helper-skeleton, highlight-skeleton for both the time-grid and day-grid.
+	renderIntroHtml: function() {
+		var view = this.view;
+
+		return '<td class="fc-axis" ' + view.axisStyleAttr() + '></td>';
 	}
-	
-	
-	t.stop = function() {
-		$(document).unbind(bindType, mouse);
-		return cell;
-	};
-	
-	
-}
 
+};
+
+
+// Methods that will customize the rendering behavior of the AgendaView's dayGrid
+var agendaDayGridMethods = {
 
 
-// this fix was only necessary for jQuery UI 1.8.16 (and jQuery 1.7 or 1.7.1)
-// upgrading to jQuery UI 1.8.17 (and using either jQuery 1.7 or 1.7.1) fixed the problem
-// but keep this in here for 1.8.16 users
-// and maybe remove it down the line
+	// Generates the HTML that goes before the all-day cells
+	renderBgIntroHtml: function() {
+		var view = this.view;
+
+		return '' +
+			'<td class="fc-axis ' + view.widgetContentClass + '" ' + view.axisStyleAttr() + '>' +
+				'<span>' + // needed for matchCellWidths
+					(view.opt('allDayHtml') || htmlEscape(view.opt('allDayText'))) +
+				'</span>' +
+			'</td>';
+	},
 
-function _fixUIEvent(event) { // for issue 1168
-	if (event.pageX === undefined) {
-		event.pageX = event.originalEvent.pageX;
-		event.pageY = event.originalEvent.pageY;
+
+	// Generates the HTML that goes before all other types of cells.
+	// Affects content-skeleton, helper-skeleton, highlight-skeleton for both the time-grid and day-grid.
+	renderIntroHtml: function() {
+		var view = this.view;
+
+		return '<td class="fc-axis" ' + view.axisStyleAttr() + '></td>';
 	}
-}
-;;
 
-function HorizontalPositionCache(getElement) {
+};
+
+;;
 
-	var t = this,
-		elements = {},
-		lefts = {},
-		rights = {};
-		
-	function e(i) {
-		return elements[i] = elements[i] || getElement(i);
+var AGENDA_ALL_DAY_EVENT_LIMIT = 5;
+
+// potential nice values for the slot-duration and interval-duration
+// from largest to smallest
+var AGENDA_STOCK_SUB_DURATIONS = [
+	{ hours: 1 },
+	{ minutes: 30 },
+	{ minutes: 15 },
+	{ seconds: 30 },
+	{ seconds: 15 }
+];
+
+fcViews.agenda = {
+	'class': AgendaView,
+	defaults: {
+		allDaySlot: true,
+		allDayText: 'all-day',
+		slotDuration: '00:30:00',
+		minTime: '00:00:00',
+		maxTime: '24:00:00',
+		slotEventOverlap: true // a bad name. confused with overlap/constraint system
 	}
-	
-	t.left = function(i) {
-		return lefts[i] = lefts[i] === undefined ? e(i).position().left : lefts[i];
-	};
-	
-	t.right = function(i) {
-		return rights[i] = rights[i] === undefined ? t.left(i) + e(i).width() : rights[i];
-	};
-	
-	t.clear = function() {
-		elements = {};
-		lefts = {};
-		rights = {};
-	};
-	
-}
+};
 
+fcViews.agendaDay = {
+	type: 'agenda',
+	duration: { days: 1 }
+};
+
+fcViews.agendaWeek = {
+	type: 'agenda',
+	duration: { weeks: 1 }
+};
 ;;
 
-})(jQuery);
\ No newline at end of file
+return FC; // export for Node/CommonJS
+});
\ No newline at end of file