/* Prototype: an object-oriented Javascript library, version 1.0.1
* (c) 2005 Sam Stephenson <sam@conio.net>
*
* Prototype is freely distributable under the terms of an MIT-style license.
* For details, see http://prototype.conio.net/
*/
Prototype = {
Version: '1.0.1'
}
Class = {
create: function() {
return function() {
this.initialize.apply(this, arguments);
}
}
}
Abstract = new Object();
Object.prototype.extend = function(object) {
for (property in object) {
this[property] = object[property];
}
return this;
}
Function.prototype.bind = function(object) {
var method = this;
return function() {
method.apply(object, arguments);
}
}
Function.prototype.bindAsEventListener = function(object) {
var method = this;
return function(event) {
method.call(object, event || window.event);
}
}
Try = {
these: function() {
var returnValue;
for (var i = 0; i < arguments.length; i++) {
var lambda = arguments[i];
try {
returnValue = lambda();
break;
} catch (e) {}
}
return returnValue;
}
}
Toggle = {
display: function() {
for (var i = 0; i < arguments.length; i++) {
var element = $(arguments[i]);
element.style.display =
(element.style.display == 'none' ? '' : 'none');
}
}
}
/*--------------------------------------------------------------------------*/
function $() {
var elements = new Array();
for (var i = 0; i < arguments.length; i++) {
var element = arguments[i];
if (typeof element == 'string')
element = document.getElementById(element);
if (arguments.length == 1)
return element;
elements.push(element);
}
return elements;
}
function getElementsByClassName(className, element) {
var all = document.all ? document.all : document.getElementsByTagName(element);
var elements = new Array();
for (var e = 0; e < all.length; e++) {
if (all[e].className == className)
elements[elements.length] = all[e];
}
return elements;
}
// function getElementsByClassName(className, element) {
// var children = (element || document).getElementsByTagName('*');
// var elements = new Array();
//
// for (var i = 0; i < children.length; i++) {
// var child = children[i];
// var classNames = child.className.split(' ');
// for (var j = 0; j < classNames.length; j++) {
// if (classNames[j] == className) {
// elements.push(child);
// break;
// }
// }
// }
//
// return elements;
// }
/*--------------------------------------------------------------------------*/
Ajax = {
getTransport: function() {
return Try.these(
function() {return new ActiveXObject('Msxml2.XMLHTTP')},
function() {return new ActiveXObject('Microsoft.XMLHTTP')},
function() {return new XMLHttpRequest()}
) || false;
},
emptyFunction: function() {}
}
Ajax.Base = function() {};
Ajax.Base.prototype = {
setOptions: function(options) {
this.options = {
method: 'post',
asynchronous: true,
parameters: '',
position: 'replace'
}.extend(options || {});
}
}
Ajax.Request = Class.create();
Ajax.Request.Events =
['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];
Ajax.Request.prototype = (new Ajax.Base()).extend({
initialize: function(url, options) {
this.transport = Ajax.getTransport();
this.setOptions(options);
try {
if (this.options.method == 'get')
url += '?' + this.options.parameters + '&_=';
this.transport.open(this.options.method, url, true);
if (this.options.asynchronous) {
this.transport.onreadystatechange = this.onStateChange.bind(this);
setTimeout((function() {this.respondToReadyState(1)}).bind(this), 10);
}
if (this.options.method == 'post') {
this.transport.setRequestHeader('Connection', 'close');
this.transport.setRequestHeader('Content-type',
'application/x-www-form-urlencoded');
}
this.transport.send(this.options.method == 'post' ?
this.options.parameters + '&_=' : null);
} catch (e) {
}
},
onStateChange: function() {
var readyState = this.transport.readyState;
if (readyState != 1)
this.respondToReadyState(this.transport.readyState);
},
respondToReadyState: function(readyState) {
var event = Ajax.Request.Events[readyState];
(this.options['on' + event] || Ajax.emptyFunction)(this.transport);
}
});
Ajax.Updater = Class.create();
Ajax.Updater.prototype = (new Ajax.Base()).extend({
initialize: function(container, url, options) {
this.container = $(container);
this.setOptions(options);
if (this.options.asynchronous) {
this.onComplete = this.options.onComplete;
this.options.onComplete = this.updateContent.bind(this);
}
this.request = new Ajax.Request(url, this.options);
if (!this.options.asynchronous)
this.updateContent();
},
updateContent: function() {
this.container.innerHTML = this.request.transport.responseText;
if (this.options.position.toLowerCase() == 'replace') {
this.container.innerHTML = this.request.transport.responseText;
} else {
Insert[this.options.position.toLowerCase()]( this.container, this.request.transport.responseText );
}
switch(this.options.effect) {
case 'highlight': new YellowFader(this.container); break;
}
if (this.onComplete) this.onComplete(this.request);
}
});
/*--------------------------------------------------------------------------*/
Field = {
clear: function() {
for (var i = 0; i < arguments.length; i++)
$(arguments[i]).value = '';
},
focus: function(element) {
$(element).focus();
},
present: function() {
for (var i = 0; i < arguments.length; i++)
if ($(arguments[i]).value == '') return false;
return true;
}
}
/*--------------------------------------------------------------------------*/
Form = {
serialize: function(form) {
var elements = Form.getElements($(form));
var queryComponents = new Array();
for (var i = 0; i < elements.length; i++) {
var queryComponent = Form.Element.serialize(elements[i]);
if (queryComponent)
queryComponents.push(queryComponent);
}
return queryComponents.join('&');
},
getElements: function(form) {
form = $(form);
var elements = new Array();
for (tagName in Form.Element.Serializers) {
var tagElements = form.getElementsByTagName(tagName);
for (var j = 0; j < tagElements.length; j++)
elements.push(tagElements[j]);
}
return elements;
}
}
Form.Element = {
serialize: function(element) {
element = $(element);
var method = element.tagName.toLowerCase();
var parameter = Form.Element.Serializers[method](element);
if (parameter)
return encodeURIComponent(parameter[0]) + '=' +
encodeURIComponent(parameter[1]);
},
getValue: function(element) {
element = $(element);
var method = element.tagName.toLowerCase();
var parameter = Form.Element.Serializers[method](element);
if (parameter)
return parameter[1];
}
}
Form.Element.Serializers = {
input: function(element) {
switch (element.type.toLowerCase()) {
case 'hidden':
case 'password':
case 'text':
return Form.Element.Serializers.textarea(element);
case 'checkbox':
case 'radio':
return Form.Element.Serializers.inputSelector(element);
}
},
inputSelector: function(element) {
if (element.checked)
return [element.name, element.value];
},
textarea: function(element) {
return [element.name, element.value];
},
select: function(element) {
var index = element.selectedIndex;
return [element.name, (index >= 0) ? element.options[index].value : ''];
}
}
/*--------------------------------------------------------------------------*/
Abstract.TimedObserver = function() {}
Abstract.TimedObserver.prototype = {
initialize: function(element, frequency, callback) {
this.frequency = frequency;
this.element = $(element);
this.callback = callback;
this.lastValue = this.getValue();
this.registerCallback();
},
registerCallback: function() {
setTimeout(this.onTimerEvent.bind(this), this.frequency * 1000);
},
onTimerEvent: function() {
var value = this.getValue();
if (this.lastValue != value) {
this.callback(this.element, value);
this.lastValue = value;
}
this.registerCallback();
}
}
Form.Element.Observer = Class.create();
Form.Element.Observer.prototype = (new Abstract.TimedObserver()).extend({
getValue: function() {
return Form.Element.getValue(this.element);
}
});
Form.Observer = Class.create();
Form.Observer.prototype = (new Abstract.TimedObserver()).extend({
getValue: function() {
return Form.serialize(this.element);
}
});
/*--------------------------------------------------------------------------*/
Number.prototype.toColorPart = function() {
var digits = this.toString(16);
if (this < 16) return '0' + digits;
return digits;
}
var YellowFader = Class.create();
YellowFader.prototype = {
initialize: function(element) {
if (typeof element == 'string') element = $(element);
if (!element) return;
this.element = element;
this.start = 153;
this.finish = 255;
this.current = this.start;
this.fade();
},
fade: function() {
if (this.isFinished()) return;
if (this.timer) clearTimeout(this.timer); // prevent flicker
this.highlight(this.element, this.current);
this.current += 17;
this.timer = setTimeout(this.fade.bind(this), 250);
},
isFinished: function() {
return this.current > this.finish;
},
highlight: function(element, current) {
element.style.backgroundColor = "#ffff" + current.toColorPart();
}
}
/*--------------------------------------------------------------------------*/
Insert = {
before_begin: function(dom, html) {
dom = $(dom);
if (dom.insertAdjacentHTML) {
dom.insertAdjacentHTML('BeforeBegin', html);
} else {
var r = dom.ownerDocument.createRange();
r.setStartBefore(dom);
var df = r.createContextualFragment(html);
dom.parentNode.insertBefore(df, dom);
}
},
after_begin: function(dom, html) {
dom = $(dom);
if (dom.insertAdjacentHTML) {
dom.insertAdjacentHTML('AfterBegin', html);
} else {
var r = dom.ownerDocument.createRange();
r.selectNodeContents(dom);
r.collapse(true);
var df = r.createContextualFragment( html );
dom.insertBefore(df, dom.firstChild );
}
},
before_end: function(dom, html) {
dom = $(dom);
if (dom.insertAdjacentHTML) {
dom.insertAdjacentHTML('BeforeEnd', html);
} else {
var r = dom.ownerDocument.createRange();
r.selectNodeContents(dom);
r.collapse(dom);
var df = r.createContextualFragment(html);
dom.appendChild(df);
}
},
after_end: function(dom, html) {
dom = $(dom);
if (dom.insertAdjacentHTML) {
dom.insertAdjacentHTML('BeforeBegin', html);
} else {
var r = dom.ownerDocument.createRange();
r.setStartAfter(dom);
var df = r.createContextualFragment( html );
dom.parentNode.insertBefore(df, dom.nextSibling);
}
}
};