aboutsummaryrefslogblamecommitdiffstats
path: root/library/justifiedGallery/dist/js/jquery.justifiedGallery.js
blob: 2c3eee11b4a3df45bcbfe8883be368a97dfab430 (plain) (tree)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586









































































































































































































































































































































































































































































































































































































                                                                                                                                                                                 
/*!
 * Justified Gallery - v3.2.0
 * http://miromannino.com/projects/justified-gallery/
 * Copyright (c) 2014 Miro Mannino
 * Licensed under the MIT license.
 */
(function($) {

	/* Events
		jg.complete : called when all the gallery has been created
		jg.resize : called when the gallery has been resized
	*/

	$.fn.justifiedGallery = function (arg) {

		// Default options
		var defaults = {
			sizeRangeSuffixes : {
				'lt100': '_t', 
				'lt240': '_m', 
				'lt320': '_n', 
				'lt500': '', 
				'lt640': '_z', 
				'lt1024': '_b'
			},
			rowHeight : 120,
			maxRowHeight : 0, //negative value = no limits, 0 = 1.5 * rowHeight
			margins : 1,
			lastRow : 'nojustify', // or can be 'justify' or 'hide'
			justifyThreshold: 0.75, /* if row width / available space > 0.75 it will be always justified 
										(i.e. lastRow setting is not considered) */
			fixedHeight : false,
			captions : true,
			cssAnimation: false,
			imagesAnimationDuration : 300, //ignored with css animations
			captionSettings : { //ignored with css animations
				animationDuration : 500,
				visibleOpacity : 0.7, 
				nonVisibleOpacity : 0.0 
			},
			rel : null, //rewrite the rel of each analyzed links
			target : null, //rewrite the target of all links
			extension : /\.[^.]+$/,
			refreshTime : 250,
			randomize : false
		};

		function getSuffix(width, height, context) {
			var longestSide;
			longestSide = (width > height) ? width : height;
			if (longestSide <= 100) {
				return context.settings.sizeRangeSuffixes.lt100;
			} else if (longestSide <= 240) {
				return context.settings.sizeRangeSuffixes.lt240;
			} else if (longestSide <= 320) {
				return context.settings.sizeRangeSuffixes.lt320;
			} else if (longestSide <= 500) {
				return context.settings.sizeRangeSuffixes.lt500;
			} else if (longestSide <= 640) {
				return context.settings.sizeRangeSuffixes.lt640;
			} else {
				return context.settings.sizeRangeSuffixes.lt1024;
			}
		}

		function onEntryMouseEnterForCaption (ev) {
			var $caption = $(ev.currentTarget).find('.caption');
			if (ev.data.settings.cssAnimation) {
				$caption.addClass('caption-visible').removeClass('caption-hidden');
			} else {
				$caption.stop().fadeTo(ev.data.settings.captionSettings.animationDuration, ev.data.settings.captionSettings.visibleOpacity);
			}
		}

		function onEntryMouseLeaveForCaption (ev) {
			var $caption = $(ev.currentTarget).find('.caption');
			if (ev.data.settings.cssAnimation) {
				$caption.removeClass('caption-visible').removeClass('caption-hidden');
			} else {
				$caption.stop().fadeTo(ev.data.settings.captionSettings.animationDuration, ev.data.settings.captionSettings.nonVisibleOpacity);
			}
		}

		function displayEntry($entry, x, y, imgWidth, imgHeight, rowHeight, context) {
			var $image = $entry.find('img');
			$image.css('width', imgWidth);
			$image.css('height', imgHeight);
			$image.css('margin-left', - imgWidth / 2);
			$image.css('margin-top', - imgHeight / 2);
			$entry.width(imgWidth);
			$entry.height(rowHeight);
			$entry.css('top', y);
			$entry.css('left', x);

			//DEBUG// console.log('displayEntry: $image.width() = ' + $image.width() + ' $image.height() = ' + $image.height());

			// Image reloading for an high quality of thumbnails
			var imageSrc = $image.attr('src');
			var newImageSrc = imageSrc.replace(context.settings.extension, '').replace(context.usedSizeRangeRegExp, '') + 
								getSuffix(imgWidth, imgHeight, context) + 
								imageSrc.match(context.settings.extension)[0];

			$image.one('error', function () {
				//DEBUG// console.log('revert the original image');
				$image.attr('src', $image.data('jg.originalSrc')); //revert to the original thumbnail, we got it.
			});

			var loadNewImage = function () {
				if (imageSrc !== newImageSrc) { //load the new image after the fadeIn
					$image.attr('src', newImageSrc);
				}
			};

			if (context.settings.cssAnimation) {
				$entry.addClass('entry-visible');
				loadNewImage();
			} else {
				$entry.stop().fadeTo(context.settings.imagesAnimationDuration, 1.0, loadNewImage);
			}

			// Captions ------------------------------
			var captionMouseEvents = $entry.data('jg.captionMouseEvents');
			if (context.settings.captions === true) {
				var $imgCaption = $entry.find('.caption');
				if ($imgCaption.length === 0) { // Create it if it doesn't exists
					var caption = $image.attr('alt');
					if (typeof caption === 'undefined') caption = $entry.attr('title');
					if (typeof caption !== 'undefined') { // Create only we found something
						$imgCaption = $('<div class="caption">' + caption + '</div>');
						$entry.append($imgCaption);
					}
				}
			
				// Create events (we check again the $imgCaption because it can be still inexistent)
				if ($imgCaption.length !== 0) {
					if (!context.settings.cssAnimation) {
						$imgCaption.stop().fadeTo(context.settings.imagesAnimationDuration, context.settings.captionSettings.nonVisibleOpacity); 
					}
					if (typeof captionMouseEvents === 'undefined') {
						captionMouseEvents = {
							mouseenter: onEntryMouseEnterForCaption,
							mouseleave: onEntryMouseLeaveForCaption
						};
						$entry.on('mouseenter', undefined, context, captionMouseEvents.mouseenter);
						$entry.on('mouseleave', undefined, context, captionMouseEvents.mouseleave);
						$entry.data('jg.captionMouseEvents', captionMouseEvents);
					}
				}
			} else {
				if (typeof captionMouseEvents !== 'undefined') {
					$entry.off('mouseenter', undefined, context, captionMouseEvents.mouseenter);
					$entry.off('mouseleave', undefined, context, captionMouseEvents.mouseleave);
					$entry.removeData('jg.captionMouseEvents');
				}
			}

		}

		function prepareBuildingRow(context, isLastRow) {
			var i, $entry, $image, imgAspectRatio, newImgW, newImgH, justify = true;
			var minHeight = 0;
			var availableWidth = context.galleryWidth - ((context.buildingRow.entriesBuff.length - 1) * context.settings.margins);
			var rowHeight = availableWidth / context.buildingRow.aspectRatio;
			var justificable = context.buildingRow.width / availableWidth > context.settings.justifyThreshold;

			//Skip the last row if we can't justify it and the lastRow == 'hide'
			if (isLastRow && context.settings.lastRow === 'hide' && !justificable) {
				for (i = 0; i < context.buildingRow.entriesBuff.length; i++) {
					$entry = context.buildingRow.entriesBuff[i];
					if (context.settings.cssAnimation) 
						$entry.removeClass('entry-visible');						
					else
						$entry.stop().fadeTo(0, 0);
				}
				return -1;
			}

			// With lastRow = nojustify, justify if is justificable (the images will not become too big)
			if (isLastRow && context.settings.lastRow === 'nojustify' && !justificable) justify = false;

			for (i = 0; i < context.buildingRow.entriesBuff.length; i++) {
				$image = context.buildingRow.entriesBuff[i].find('img');
				imgAspectRatio = $image.data('jg.imgw') / $image.data('jg.imgh');

				if (justify) {
					newImgW = rowHeight * imgAspectRatio;
					newImgH = rowHeight;

					/* With fixedHeight the newImgH must be greater than rowHeight. 
					In some cases here this is not satisfied (due to the justification).
					But we comment it, because is better to have a shorter but justified row instead 
					to have a cropped image at the end. */
					/*if (context.settings.fixedHeight && newImgH < context.settings.rowHeight) {
						newImgW = context.settings.rowHeight * imgAspectRatio;
						newImgH = context.settings.rowHeight;
					}*/
				} else {
					newImgW = context.settings.rowHeight * imgAspectRatio;
					newImgH = context.settings.rowHeight;
				}

				$image.data('jg.imgw', Math.ceil(newImgW));
				$image.data('jg.imgh', Math.ceil(newImgH));
				if (i === 0 || minHeight > newImgH) minHeight = newImgH;
			}

			if (context.settings.fixedHeight && minHeight > context.settings.rowHeight) 
				minHeight = context.settings.rowHeight;

			return minHeight;
		}

		function rewind(context) {
			context.lastAnalyzedIndex = -1;
			context.buildingRow.entriesBuff = [];
			context.buildingRow.aspectRatio = 0;
			context.buildingRow.width = 0;
			context.offY = 0;
			context.firstRowFlushed = false;
		}

		function flushRow(context, isLastRow) {
			var $entry, $image, minHeight, offX = 0;

			//DEBUG// console.log('flush (width: ' + context.buildingRow.width + ', galleryWidth: ' + context.galleryWidth + ', ' + 'isLastRow: ' + isLastRow + ')');

			minHeight = prepareBuildingRow(context, isLastRow);
			if (isLastRow && context.settings.lastRow === 'hide' && minHeight === -1) {
				context.buildingRow.entriesBuff = [];
				context.buildingRow.aspectRatio = 0;
				context.buildingRow.width = 0;
				return;
			}

			if (context.settings.maxRowHeight > 0 && context.settings.maxRowHeight < minHeight)
				minHeight = context.settings.maxRowHeight;
			else if (context.settings.maxRowHeight === 0 && (1.5 * context.settings.rowHeight) < minHeight)
				minHeight = 1.5 * context.settings.rowHeight;

			for (var i = 0; i < context.buildingRow.entriesBuff.length; i++) {
				$entry = context.buildingRow.entriesBuff[i];
				$image = $entry.find('img');
				displayEntry($entry, offX, context.offY, $image.data('jg.imgw'), $image.data('jg.imgh'), minHeight, context);
				offX += $image.data('jg.imgw') + context.settings.margins;
			}

			//Gallery Height
			context.$gallery.height(context.offY + minHeight +
				(context.spinner.active ? context.spinner.$el.innerHeight() : 0)
			);

			if(!isLastRow) {
				//Ready for a new row
				context.offY += minHeight + context.settings.margins;

				//DEBUG// console.log('minHeight: ' + minHeight + ' offY: ' + context.offY);

				context.buildingRow.entriesBuff = []; //clear the array creating a new one
				context.buildingRow.aspectRatio = 0;
				context.buildingRow.width = 0;
				context.firstRowFlushed = true;
				context.$gallery.trigger('jg.rowflush');
			}
		}

		function checkWidth(context) {
			context.checkWidthIntervalId = setInterval(function () {
				var galleryWidth = parseInt(context.$gallery.width(), 10);
				if (context.galleryWidth !== galleryWidth) {
					//DEBUG// console.log("resize. old: " + context.galleryWidth + " new: " + galleryWidth);
					
					context.galleryWidth = galleryWidth;
					rewind(context);

					// Restart to analyze
					startImgAnalyzer(context, true);
				}
			}, context.settings.refreshTime);
		}	

		function startLoadingSpinnerAnimation(spinnerContext) {
			clearInterval(spinnerContext.intervalId);
			spinnerContext.intervalId = setInterval(function () {
				if (spinnerContext.phase < spinnerContext.$points.length) 
					spinnerContext.$points.eq(spinnerContext.phase).fadeTo(spinnerContext.timeslot, 1);
				else
					spinnerContext.$points.eq(spinnerContext.phase - spinnerContext.$points.length).fadeTo(spinnerContext.timeslot, 0);
				spinnerContext.phase = (spinnerContext.phase + 1) % (spinnerContext.$points.length * 2);
			}, spinnerContext.timeslot);
		}

		function stopLoadingSpinnerAnimation(spinnerContext) {
			clearInterval(spinnerContext.intervalId);
			spinnerContext.intervalId = null;
		}

		function stopImgAnalyzerStarter(context) {
			context.yield.flushed = 0;
			if (context.imgAnalyzerTimeout !== null) clearTimeout(context.imgAnalyzerTimeout);
		}

		function startImgAnalyzer(context, isForResize) {
			stopImgAnalyzerStarter(context);
			context.imgAnalyzerTimeout = setTimeout(function () { analyzeImages(context, isForResize); }, 0.001);
			analyzeImages(context, isForResize);
		}

		function analyzeImages(context, isForResize) {
			
			//DEBUG// 
			/*var rnd = parseInt(Math.random() * 10000, 10);
			//DEBUG// console.log('analyzeImages ' + rnd + ' start');
			//DEBUG// console.log('images status: ');
			for (var i = 0; i < context.entries.length; i++) {
				var $entry = $(context.entries[i]);
				var $image = $entry.find('img');
				//DEBUG// console.log(i + ' (alt: ' + $image.attr('alt') + 'loaded: ' + $image.data('jg.loaded') + ')');
			}*/

			/* The first row */
			var isLastRow;
			
			for (var i = context.lastAnalyzedIndex + 1; i < context.entries.length; i++) {
				var $entry = $(context.entries[i]);
				var $image = $entry.find('img');

				if ($image.data('jg.loaded') === true) {
					isLastRow = i >= context.entries.length - 1;

					var availableWidth = context.galleryWidth - ((context.buildingRow.entriesBuff.length - 1) * context.settings.margins);
					var imgAspectRatio = $image.data('jg.imgw') / $image.data('jg.imgh');
					if (availableWidth / (context.buildingRow.aspectRatio + imgAspectRatio) < context.settings.rowHeight) {
						flushRow(context, isLastRow);

						if(++context.yield.flushed >= context.yield.every) {
							//DEBUG// console.log("yield");
							startImgAnalyzer(context, isForResize);
							return;
						}
					}

					context.buildingRow.entriesBuff.push($entry);
					context.buildingRow.aspectRatio += imgAspectRatio;
					context.buildingRow.width += imgAspectRatio * context.settings.rowHeight;
					context.lastAnalyzedIndex = i;

				} else if ($image.data('jg.loaded') !== 'error') {
					return;
				}
			}

			// Last row flush (the row is not full)
			if (context.buildingRow.entriesBuff.length > 0) flushRow(context, isLastRow);

			if (context.spinner.active) {
				context.spinner.active = false;
				context.$gallery.height(context.$gallery.height() - context.spinner.$el.innerHeight());
				context.spinner.$el.detach();
				stopLoadingSpinnerAnimation(context.spinner);
			}

			/* Stop, if there is, the timeout to start the analyzeImages.
					This is because an image can be set loaded, and the timeout can be set,
					but this image can be analyzed yet. 
			*/
			stopImgAnalyzerStarter(context);

			//On complete callback
			if (!isForResize) context.$gallery.trigger('jg.complete'); else context.$gallery.trigger('jg.resize');

			//DEBUG// console.log('analyzeImages ' + rnd +  ' end');
		}

		function checkSettings (context) {

			function checkSuffixesRange(range) {
				if (typeof context.settings.sizeRangeSuffixes[range] !== 'string')
					throw 'sizeRangeSuffixes.' + range + ' must be a string';
			}

			function checkOrConvertNumber(parent, settingName) {
				if (typeof parent[settingName] === 'string') {
					parent[settingName] = parseFloat(parent[settingName], 10);
					if (isNaN(parent[settingName])) throw 'invalid number for ' + settingName;
				} else if (typeof parent[settingName] === 'number') {
					if (isNaN(parent[settingName])) throw 'invalid number for ' + settingName;
				} else {
					throw settingName + ' must be a number';
				}
			}

			if (typeof context.settings.sizeRangeSuffixes !== 'object')
				throw 'sizeRangeSuffixes must be defined and must be an object';

			checkSuffixesRange('lt100');
			checkSuffixesRange('lt240');
			checkSuffixesRange('lt320');
			checkSuffixesRange('lt500');
			checkSuffixesRange('lt640');
			checkSuffixesRange('lt1024');

			checkOrConvertNumber(context.settings, 'rowHeight');
			checkOrConvertNumber(context.settings, 'maxRowHeight');
			checkOrConvertNumber(context.settings, 'margins');

			if (context.settings.lastRow !== 'nojustify' &&
					context.settings.lastRow !== 'justify' &&
					context.settings.lastRow !== 'hide') {
				throw 'lastRow must be "nojustify", "justify" or "hide"';
			}

			checkOrConvertNumber(context.settings, 'justifyThreshold');
			if (context.settings.justifyThreshold < 0 || context.settings.justifyThreshold > 1)
				throw 'justifyThreshold must be in the interval [0,1]';
			if (typeof context.settings.cssAnimation !== 'boolean') {
				throw 'cssAnimation must be a boolean';	
			}
			
			checkOrConvertNumber(context.settings.captionSettings, 'animationDuration');
			checkOrConvertNumber(context.settings, 'imagesAnimationDuration');

			checkOrConvertNumber(context.settings.captionSettings, 'visibleOpacity');
			if (context.settings.captionSettings.visibleOpacity < 0 || context.settings.captionSettings.visibleOpacity > 1)
				throw 'captionSettings.visibleOpacity must be in the interval [0, 1]';

			checkOrConvertNumber(context.settings.captionSettings, 'nonVisibleOpacity');
			if (context.settings.captionSettings.visibleOpacity < 0 || context.settings.captionSettings.visibleOpacity > 1)
				throw 'captionSettings.nonVisibleOpacity must be in the interval [0, 1]';

			if (typeof context.settings.fixedHeight !== 'boolean') {
				throw 'fixedHeight must be a boolean';	
			}

			if (typeof context.settings.captions !== 'boolean') {
				throw 'captions must be a boolean';	
			}

			checkOrConvertNumber(context.settings, 'refreshTime');

			if (typeof context.settings.randomize !== 'boolean') {
				throw 'randomize must be a boolean';	
			}

		}

		return this.each(function (index, gallery) {
			var $gallery = $(gallery);
			$gallery.addClass('justified-gallery');

			var context = $gallery.data('jg.context');
			if (typeof context === 'undefined') {

				if (typeof arg !== 'undefined' && arg !== null && typeof arg !== 'object') 
					throw 'The argument must be an object';

				// Spinner init
				var $spinner = $('<div class="spinner"><span></span><span></span><span></span></div>');

				//Context init
				context = {
					settings : $.extend({}, defaults, arg),
					imgAnalyzerTimeout : null,
					entries : null,
					buildingRow : {
						entriesBuff : [],
						width : 0,
						aspectRatio : 0
					},
					lastAnalyzedIndex : -1,
					firstRowFlushed : false,
					yield : {
						every : 2, /* do a flush every context.yield.every flushes (
									* must be greater than 1, else the analyzeImages will loop */
						flushed : 0 //flushed rows without a yield
					},
					offY : 0,
					spinner : {
						active : false,
						phase : 0,
						timeslot : 150,
						$el : $spinner,
						$points : $spinner.find('span'),
						intervalId : null
					},
					checkWidthIntervalId : null,
					galleryWidth : $gallery.width(),
					$gallery : $gallery
				};

				$gallery.data('jg.context', context);

			} else if (arg === 'norewind') {
				// In this case we don't rewind, and analyze all the images
			} else {
			//redmatrix - this makes the gallery jump back to top after new content is loaded
				context.settings = $.extend({}, context.settings, arg);
				rewind(context);
			}
			
			checkSettings(context);

			context.entries = $gallery.find('> a').toArray();
			if (context.entries.length === 0) return;

			// Randomize
			if (context.settings.randomize) {
				context.entries.sort(function () { return Math.random() * 2 - 1; });
				$.each(context.entries, function () {
					$(this).appendTo($gallery);
				});
			}

			context.usedSizeRangeRegExp = new RegExp("(" + 
				context.settings.sizeRangeSuffixes.lt100 + "|" + 
				context.settings.sizeRangeSuffixes.lt240 + "|" + 
				context.settings.sizeRangeSuffixes.lt320 + "|" + 
				context.settings.sizeRangeSuffixes.lt500 + "|" + 
				context.settings.sizeRangeSuffixes.lt640 + "|" + 
				context.settings.sizeRangeSuffixes.lt1024 + ")$"
			);

			if (context.settings.maxRowHeight > 0 && context.settings.maxRowHeight < context.settings.rowHeight)
				context.settings.maxRowHeight = context.settings.rowHeight;

			var imagesToLoad = false;
			$.each(context.entries, function (index, entry) {
				var $entry = $(entry);
				var $image = $entry.find('img');

				if ($image.data('jg.loaded') !== true) {
					$image.data('jg.loaded', false);

					//DEBUG// console.log('listed ' + $image.attr('alt'));

					imagesToLoad = true;
					// Spinner start
					if (context.spinner.active === false) {
						context.spinner.active = true;
						$gallery.append(context.spinner.$el);
						$gallery.height(context.offY + context.spinner.$el.innerHeight());
						startLoadingSpinnerAnimation(context.spinner);
					}

					// Link Rel global overwrite
					if (context.settings.rel !== null) $entry.attr('rel', context.settings.rel);

					// Link Target global overwrite
					if (context.settings.target !== null) $entry.attr('target', context.settings.target);

					// Image src
					var imageSrc = (typeof $image.data('safe-src') !== 'undefined') ? $image.data('safe-src') : $image.attr('src');
					$image.data('jg.originalSrc', imageSrc);
					$image.attr('src', imageSrc);

					/* Check if the image is loaded or not using another image object.
						We cannot use the 'complete' image property, because some browsers, 
						with a 404 set complete = true */
					var loadImg = new Image();
					var $loadImg = $(loadImg);
					$loadImg.one('load', function imgLoaded () {
						//DEBUG// console.log('img load (alt: ' + $image.attr('alt') + ')');
						$image.off('load error');
						$image.data('jg.imgw', loadImg.width);
						$image.data('jg.imgh', loadImg.height);
						$image.data('jg.loaded', true);
						startImgAnalyzer(context, false);
					});
					$loadImg.one('error', function imgLoadError () {
						//DEBUG// console.log('img error (alt: ' + $image.attr('alt') + ')');
						$image.off('load error');
						$image.data('jg.loaded', 'error');
						startImgAnalyzer(context, false);
					});
					loadImg.src = imageSrc;

				}

			});

			if (!imagesToLoad) startImgAnalyzer(context, false);
			checkWidth(context);
		});

	};
	
}(jQuery));