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js usarsarollerskaters.org collected 2026-09-24 20:57:11 UTC 75,285 bytes, 1,757 lines download raw bytes 

1/*
2 * jQuery UI Datepicker 1.8.7
3 *
4 * Copyright 2010, AUTHORS.txt (http://jqueryui.com/about)
5 * Dual licensed under the MIT or GPL Version 2 licenses.
6 * http://jquery.org/license
7 *
8 * http://docs.jquery.com/UI/Datepicker
9 *
10 * Depends:
11 *	jquery.ui.core.js
12 */
13(function( $, undefined ) {
14
15$.extend($.ui, { datepicker: { version: "1.8.7" } });
16
17var PROP_NAME = 'datepicker';
18var dpuuid = new Date().getTime();
19
20/* Date picker manager.
21   Use the singleton instance of this class, $.datepicker, to interact with the date picker.
22   Settings for (groups of) date pickers are maintained in an instance object,
23   allowing multiple different settings on the same page. */
24
25function Datepicker() {
26	this.debug = false; // Change this to true to start debugging
27	this._curInst = null; // The current instance in use
28	this._keyEvent = false; // If the last event was a key event
29	this._disabledInputs = []; // List of date picker inputs that have been disabled
30	this._datepickerShowing = false; // True if the popup picker is showing , false if not
31	this._inDialog = false; // True if showing within a "dialog", false if not
32	this._mainDivId = 'ui-datepicker-div'; // The ID of the main datepicker division
33	this._inlineClass = 'ui-datepicker-inline'; // The name of the inline marker class
34	this._appendClass = 'ui-datepicker-append'; // The name of the append marker class
35	this._triggerClass = 'ui-datepicker-trigger'; // The name of the trigger marker class
36	this._dialogClass = 'ui-datepicker-dialog'; // The name of the dialog marker class
37	this._disableClass = 'ui-datepicker-disabled'; // The name of the disabled covering marker class
38	this._unselectableClass = 'ui-datepicker-unselectable'; // The name of the unselectable cell marker class
39	this._currentClass = 'ui-datepicker-current-day'; // The name of the current day marker class
40	this._dayOverClass = 'ui-datepicker-days-cell-over'; // The name of the day hover marker class
41	this.regional = []; // Available regional settings, indexed by language code
42	this.regional[''] = { // Default regional settings
43		closeText: 'Done', // Display text for close link
44		prevText: 'Prev', // Display text for previous month link
45		nextText: 'Next', // Display text for next month link
46		currentText: 'Today', // Display text for current month link
47		monthNames: ['January','February','March','April','May','June',
48			'July','August','September','October','November','December'], // Names of months for drop-down and formatting
49		monthNamesShort: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'], // For formatting
50		dayNames: ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'], // For formatting
51		dayNamesShort: ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'], // For formatting
52		dayNamesMin: ['Su','Mo','Tu','We','Th','Fr','Sa'], // Column headings for days starting at Sunday
53		weekHeader: 'Wk', // Column header for week of the year
54		dateFormat: 'mm/dd/yy', // See format options on parseDate
55		firstDay: 0, // The first day of the week, Sun = 0, Mon = 1, ...
56		isRTL: false, // True if right-to-left language, false if left-to-right
57		showMonthAfterYear: false, // True if the year select precedes month, false for month then year
58		yearSuffix: '' // Additional text to append to the year in the month headers
59	};
60	this._defaults = { // Global defaults for all the date picker instances
61		showOn: 'focus', // 'focus' for popup on focus,
62			// 'button' for trigger button, or 'both' for either
63		showAnim: 'fadeIn', // Name of jQuery animation for popup
64		showOptions: {}, // Options for enhanced animations
65		defaultDate: null, // Used when field is blank: actual date,
66			// +/-number for offset from today, null for today
67		appendText: '', // Display text following the input box, e.g. showing the format
68		buttonText: '...', // Text for trigger button
69		buttonImage: '', // URL for trigger button image
70		buttonImageOnly: false, // True if the image appears alone, false if it appears on a button
71		hideIfNoPrevNext: false, // True to hide next/previous month links
72			// if not applicable, false to just disable them
73		navigationAsDateFormat: false, // True if date formatting applied to prev/today/next links
74		gotoCurrent: false, // True if today link goes back to current selection instead

75		changeMonth: false, // True if month can be selected directly, false if only prev/next
76		changeYear: false, // True if year can be selected directly, false if only prev/next
77		yearRange: 'c-10:c+10', // Range of years to display in drop-down,
78			// either relative to today's year (-nn:+nn), relative to currently displayed year
79			// (c-nn:c+nn), absolute (nnnn:nnnn), or a combination of the above (nnnn:-n)
80		showOtherMonths: false, // True to show dates in other months, false to leave blank
81		selectOtherMonths: false, // True to allow selection of dates in other months, false for unselectable
82		showWeek: false, // True to show week of the year, false to not show it
83		calculateWeek: this.iso8601Week, // How to calculate the week of the year,
84			// takes a Date and returns the number of the week for it
85		shortYearCutoff: '+10', // Short year values < this are in the current century,
86			// > this are in the previous century,
87			// string value starting with '+' for current year + value
88		minDate: null, // The earliest selectable date, or null for no limit
89		maxDate: null, // The latest selectable date, or null for no limit
90		duration: 'fast', // Duration of display/closure
91		beforeShowDay: null, // Function that takes a date and returns an array with
92			// [0] = true if selectable, false if not, [1] = custom CSS class name(s) or '',
93			// [2] = cell title (optional), e.g. $.datepicker.noWeekends
94		beforeShow: null, // Function that takes an input field and
95			// returns a set of custom settings for the date picker
96		onSelect: null, // Define a callback function when a date is selected
97		onChangeMonthYear: null, // Define a callback function when the month or year is changed
98		onClose: null, // Define a callback function when the datepicker is closed
99		numberOfMonths: 1, // Number of months to show at a time
100		showCurrentAtPos: 0, // The position in multipe months at which to show the current month (starting at 0)
101		stepMonths: 1, // Number of months to step back/forward
102		stepBigMonths: 12, // Number of months to step back/forward for the big links
103		altField: '', // Selector for an alternate field to store selected dates into
104		altFormat: '', // The date format to use for the alternate field
105		constrainInput: true, // The input is constrained by the current date format
106		showButtonPanel: false, // True to show button panel, false to not show it
107		autoSize: false // True to size the input for the date format, false to leave as is
108	};
109	$.extend(this._defaults, this.regional['']);
110	this.dpDiv = $('<div id="' + this._mainDivId + '" class="ui-datepicker ui-widget ui-widget-content ui-helper-clearfix ui-corner-all"></div>');
111}
112
113$.extend(Datepicker.prototype, {
114	/* Class name added to elements to indicate already configured with a date picker. */
115	markerClassName: 'hasDatepicker',
116
117	/* Debug logging (if enabled). */
118	log: function () {
119		if (this.debug)
120			console.log.apply('', arguments);
121	},
122	
123	// TODO rename to "widget" when switching to widget factory
124	_widgetDatepicker: function() {
125		return this.dpDiv;
126	},
127
128	/* Override the default settings for all instances of the date picker.
129	   @param  settings  object - the new settings to use as defaults (anonymous object)
130	   @return the manager object */
131	setDefaults: function(settings) {
132		extendRemove(this._defaults, settings || {});
133		return this;
134	},
135
136	/* Attach the date picker to a jQuery selection.
137	   @param  target    element - the target input field or division or span
138	   @param  settings  object - the new settings to use for this date picker instance (anonymous) */
139	_attachDatepicker: function(target, settings) {
140		// check for settings on the control itself - in namespace 'date:'
141		var inlineSettings = null;
142		for (var attrName in this._defaults) {
143			var attrValue = target.getAttribute('date:' + attrName);
144			if (attrValue) {
145				inlineSettings = inlineSettings || {};
146				try {
147					inlineSettings[attrName] = eval(attrValue);
148				} catch (err) {
149					inlineSettings[attrName] = attrValue;
150				}
151			}
152		}
153		var nodeName = target.nodeName.toLowerCase();
154		var inline = (nodeName == 'div' || nodeName == 'span');
155		if (!target.id) {
156			this.uuid += 1;
157			target.id = 'dp' + this.uuid;
158		}
159		var inst = this._newInst($(target), inline);
160		inst.settings = $.extend({}, settings || {}, inlineSettings || {});
161		if (nodeName == 'input') {
162			this._connectDatepicker(target, inst);
163		} else if (inline) {
164			this._inlineDatepicker(target, inst);
165		}
166	},
167
168	/* Create a new instance object. */
169	_newInst: function(target, inline) {
170		var id = target[0].id.replace(/([^A-Za-z0-9_-])/g, '\\\\$1'); // escape jQuery meta chars
171		return {id: id, input: target, // associated target
172			selectedDay: 0, selectedMonth: 0, selectedYear: 0, // current selection
173			drawMonth: 0, drawYear: 0, // month being drawn
174			inline: inline, // is datepicker inline or not
175			dpDiv: (!inline ? this.dpDiv : // presentation div
176			$('<div class="' + this._inlineClass + ' ui-datepicker ui-widget ui-widget-content ui-helper-clearfix ui-corner-all"></div>'))};
177	},
178
179	/* Attach the date picker to an input field. */
180	_connectDatepicker: function(target, inst) {
181		var input = $(target);
182		inst.append = $([]);
183		inst.trigger = $([]);
184		if (input.hasClass(this.markerClassName))
185			return;
186		this._attachments(input, inst);
187		input.addClass(this.markerClassName).keydown(this._doKeyDown).
188			keypress(this._doKeyPress).keyup(this._doKeyUp).
189			bind("setData.datepicker", function(event, key, value) {
190				inst.settings[key] = value;
191			}).bind("getData.datepicker", function(event, key) {
192				return this._get(inst, key);
193			});
194		this._autoSize(inst);
195		$.data(target, PROP_NAME, inst);
196	},
197
198	/* Make attachments based on settings. */
199	_attachments: function(input, inst) {
200		var appendText = this._get(inst, 'appendText');
201		var isRTL = this._get(inst, 'isRTL');
202		if (inst.append)

203			inst.append.remove();
204		if (appendText) {
205			inst.append = $('<span class="' + this._appendClass + '">' + appendText + '</span>');
206			input[isRTL ? 'before' : 'after'](inst.append);
207		}
208		input.unbind('focus', this._showDatepicker);
209		if (inst.trigger)
210			inst.trigger.remove();
211		var showOn = this._get(inst, 'showOn');
212		if (showOn == 'focus' || showOn == 'both') // pop-up date picker when in the marked field
213			input.focus(this._showDatepicker);
214		if (showOn == 'button' || showOn == 'both') { // pop-up date picker when button clicked
215			var buttonText = this._get(inst, 'buttonText');
216			var buttonImage = this._get(inst, 'buttonImage');
217			inst.trigger = $(this._get(inst, 'buttonImageOnly') ?
218				$('<img/>').addClass(this._triggerClass).
219					attr({ src: buttonImage, alt: buttonText, title: buttonText }) :
220				$('<button type="button"></button>').addClass(this._triggerClass).
221					html(buttonImage == '' ? buttonText : $('<img/>').attr(
222					{ src:buttonImage, alt:buttonText, title:buttonText })));
223			input[isRTL ? 'before' : 'after'](inst.trigger);
224			inst.trigger.click(function() {
225				if ($.datepicker._datepickerShowing && $.datepicker._lastInput == input[0])
226					$.datepicker._hideDatepicker();
227				else
228					$.datepicker._showDatepicker(input[0]);
229				return false;
230			});
231		}
232	},
233
234	/* Apply the maximum length for the date format. */
235	_autoSize: function(inst) {
236		if (this._get(inst, 'autoSize') && !inst.inline) {
237			var date = new Date(2009, 12 - 1, 20); // Ensure double digits
238			var dateFormat = this._get(inst, 'dateFormat');
239			if (dateFormat.match(/[DM]/)) {
240				var findMax = function(names) {
241					var max = 0;
242					var maxI = 0;
243					for (var i = 0; i < names.length; i++) {
244						if (names[i].length > max) {
245							max = names[i].length;
246							maxI = i;
247						}
248					}
249					return maxI;
250				};
251				date.setMonth(findMax(this._get(inst, (dateFormat.match(/MM/) ?
252					'monthNames' : 'monthNamesShort'))));
253				date.setDate(findMax(this._get(inst, (dateFormat.match(/DD/) ?
254					'dayNames' : 'dayNamesShort'))) + 20 - date.getDay());
255			}
256			inst.input.attr('size', this._formatDate(inst, date).length);
257		}
258	},
259
260	/* Attach an inline date picker to a div. */
261	_inlineDatepicker: function(target, inst) {
262		var divSpan = $(target);
263		if (divSpan.hasClass(this.markerClassName))
264			return;
265		divSpan.addClass(this.markerClassName).append(inst.dpDiv).
266			bind("setData.datepicker", function(event, key, value){
267				inst.settings[key] = value;
268			}).bind("getData.datepicker", function(event, key){
269				return this._get(inst, key);
270			});
271		$.data(target, PROP_NAME, inst);
272		this._setDate(inst, this._getDefaultDate(inst), true);
273		this._updateDatepicker(inst);
274		this._updateAlternate(inst);
275		inst.dpDiv.show();
276	},
277
278	/* Pop-up the date picker in a "dialog" box.
279	   @param  input     element - ignored
280	   @param  date      string or Date - the initial date to display
281	   @param  onSelect  function - the function to call when a date is selected
282	   @param  settings  object - update the dialog date picker instance's settings (anonymous object)
283	   @param  pos       int[2] - coordinates for the dialog's position within the screen or
284	                     event - with x/y coordinates or
285	                     leave empty for default (screen centre)
286	   @return the manager object */
287	_dialogDatepicker: function(input, date, onSelect, settings, pos) {
288		var inst = this._dialogInst; // internal instance
289		if (!inst) {
290			this.uuid += 1;
291			var id = 'dp' + this.uuid;
292			this._dialogInput = $('<input type="text" id="' + id +
293				'" style="position: absolute; top: -100px; width: 0px; z-index: -10;"/>');
294			this._dialogInput.keydown(this._doKeyDown);
295			$('body').append(this._dialogInput);
296			inst = this._dialogInst = this._newInst(this._dialogInput, false);
297			inst.settings = {};
298			$.data(this._dialogInput[0], PROP_NAME, inst);
299		}
300		extendRemove(inst.settings, settings || {});
301		date = (date && date.constructor == Date ? this._formatDate(inst, date) : date);
302		this._dialogInput.val(date);
303
304		this._pos = (pos ? (pos.length ? pos : [pos.pageX, pos.pageY]) : null);
305		if (!this._pos) {
306			var browserWidth = document.documentElement.clientWidth;
307			var browserHeight = document.documentElement.clientHeight;
308			var scrollX = document.documentElement.scrollLeft || document.body.scrollLeft;
309			var scrollY = document.documentElement.scrollTop || document.body.scrollTop;
310			this._pos = // should use actual width/height below
311				[(browserWidth / 2) - 100 + scrollX, (browserHeight / 2) - 150 + scrollY];
312		}
313
314		// move input on screen for focus, but hidden behind dialog
315		this._dialogInput.css('left', (this._pos[0] + 20) + 'px').css('top', this._pos[1] + 'px');
316		inst.settings.onSelect = onSelect;
317		this._inDialog = true;
318		this.dpDiv.addClass(this._dialogClass);
319		this._showDatepicker(this._dialogInput[0]);
320		if ($.blockUI)
321			$.blockUI(this.dpDiv);
322		$.data(this._dialogInput[0], PROP_NAME, inst);
323		return this;
324	},
325
326	/* Detach a datepicker from its control.
327	   @param  target    element - the target input field or division or span */
328	_destroyDatepicker: function(target) {
329		var $target = $(target);
330		var inst = $.data(target, PROP_NAME);
331		if (!$target.hasClass(this.markerClassName)) {
332			return;
333		}
334		var nodeName = target.nodeName.toLowerCase();
335		$.removeData(target, PROP_NAME);
336		if (nodeName == 'input') {

337			inst.append.remove();
338			inst.trigger.remove();
339			$target.removeClass(this.markerClassName).
340				unbind('focus', this._showDatepicker).
341				unbind('keydown', this._doKeyDown).
342				unbind('keypress', this._doKeyPress).
343				unbind('keyup', this._doKeyUp);
344		} else if (nodeName == 'div' || nodeName == 'span')
345			$target.removeClass(this.markerClassName).empty();
346	},
347
348	/* Enable the date picker to a jQuery selection.
349	   @param  target    element - the target input field or division or span */
350	_enableDatepicker: function(target) {
351		var $target = $(target);
352		var inst = $.data(target, PROP_NAME);
353		if (!$target.hasClass(this.markerClassName)) {
354			return;
355		}
356		var nodeName = target.nodeName.toLowerCase();
357		if (nodeName == 'input') {
358			target.disabled = false;
359			inst.trigger.filter('button').
360				each(function() { this.disabled = false; }).end().
361				filter('img').css({opacity: '1.0', cursor: ''});
362		}
363		else if (nodeName == 'div' || nodeName == 'span') {
364			var inline = $target.children('.' + this._inlineClass);
365			inline.children().removeClass('ui-state-disabled');
366		}
367		this._disabledInputs = $.map(this._disabledInputs,
368			function(value) { return (value == target ? null : value); }); // delete entry
369	},
370
371	/* Disable the date picker to a jQuery selection.
372	   @param  target    element - the target input field or division or span */
373	_disableDatepicker: function(target) {
374		var $target = $(target);
375		var inst = $.data(target, PROP_NAME);
376		if (!$target.hasClass(this.markerClassName)) {
377			return;
378		}
379		var nodeName = target.nodeName.toLowerCase();
380		if (nodeName == 'input') {
381			target.disabled = true;
382			inst.trigger.filter('button').
383				each(function() { this.disabled = true; }).end().
384				filter('img').css({opacity: '0.5', cursor: 'default'});
385		}
386		else if (nodeName == 'div' || nodeName == 'span') {
387			var inline = $target.children('.' + this._inlineClass);
388			inline.children().addClass('ui-state-disabled');
389		}
390		this._disabledInputs = $.map(this._disabledInputs,
391			function(value) { return (value == target ? null : value); }); // delete entry
392		this._disabledInputs[this._disabledInputs.length] = target;
393	},
394
395	/* Is the first field in a jQuery collection disabled as a datepicker?
396	   @param  target    element - the target input field or division or span
397	   @return boolean - true if disabled, false if enabled */
398	_isDisabledDatepicker: function(target) {
399		if (!target) {
400			return false;
401		}
402		for (var i = 0; i < this._disabledInputs.length; i++) {
403			if (this._disabledInputs[i] == target)
404				return true;
405		}
406		return false;
407	},
408
409	/* Retrieve the instance data for the target control.
410	   @param  target  element - the target input field or division or span
411	   @return  object - the associated instance data
412	   @throws  error if a jQuery problem getting data */
413	_getInst: function(target) {
414		try {
415			return $.data(target, PROP_NAME);
416		}
417		catch (err) {
418			throw 'Missing instance data for this datepicker';
419		}
420	},
421
422	/* Update or retrieve the settings for a date picker attached to an input field or division.
423	   @param  target  element - the target input field or division or span
424	   @param  name    object - the new settings to update or
425	                   string - the name of the setting to change or retrieve,
426	                   when retrieving also 'all' for all instance settings or
427	                   'defaults' for all global defaults
428	   @param  value   any - the new value for the setting
429	                   (omit if above is an object or to retrieve a value) */
430	_optionDatepicker: function(target, name, value) {
431		var inst = this._getInst(target);
432		if (arguments.length == 2 && typeof name == 'string') {
433			return (name == 'defaults' ? $.extend({}, $.datepicker._defaults) :
434				(inst ? (name == 'all' ? $.extend({}, inst.settings) :
435				this._get(inst, name)) : null));
436		}
437		var settings = name || {};
438		if (typeof name == 'string') {
439			settings = {};
440			settings[name] = value;
441		}
442		if (inst) {
443			if (this._curInst == inst) {
444				this._hideDatepicker();
445			}
446			var date = this._getDateDatepicker(target, true);
447			extendRemove(inst.settings, settings);
448			this._attachments($(target), inst);
449			this._autoSize(inst);
450			this._setDateDatepicker(target, date);
451			this._updateDatepicker(inst);
452		}
453	},
454
455	// change method deprecated
456	_changeDatepicker: function(target, name, value) {
457		this._optionDatepicker(target, name, value);
458	},
459
460	/* Redraw the date picker attached to an input field or division.
461	   @param  target  element - the target input field or division or span */
462	_refreshDatepicker: function(target) {
463		var inst = this._getInst(target);
464		if (inst) {
465			this._updateDatepicker(inst);
466		}
467	},
468
469	/* Set the dates for a jQuery selection.
470	   @param  target   element - the target input field or division or span
471	   @param  date     Date - the new date */
472	_setDateDatepicker: function(target, date) {
473		var inst = this._getInst(target);
474		if (inst) {
475			this._setDate(inst, date);
476			this._updateDatepicker(inst);
477			this._updateAlternate(inst);
478		}
479	},
480
481	/* Get the date(s) for the first entry in a jQuery selection.
482	   @param  target     element - the target input field or division or span
483	   @param  noDefault  boolean - true if no default date is to be used
484	   @return Date - the current date */
485	_getDateDatepicker: function(target, noDefault) {
486		var inst = this._getInst(target);
487		if (inst && !inst.inline)
488			this._setDateFromField(inst, noDefault);
489		return (inst ? this._getDate(inst) : null);
490	},
491
492	/* Handle keystrokes. */
493	_doKeyDown: function(event) {
494		var inst = $.datepicker._getInst(event.target);
495		var handled = true;
496		var isRTL = inst.dpDiv.is('.ui-datepicker-rtl');
497		inst._keyEvent = true;
498		if ($.datepicker._datepickerShowing)
499			switch (event.keyCode) {
500				case 9: $.datepicker._hideDatepicker();
501						handled = false;
502						break; // hide on tab out
503				case 13: var sel = $('td.' + $.datepicker._dayOverClass + ':not(.' + 
504									$.datepicker._currentClass + ')', inst.dpDiv);
505						if (sel[0])
506							$.datepicker._selectDay(event.target, inst.selectedMonth, inst.selectedYear, sel[0]);
507						else
508							$.datepicker._hideDatepicker();
509						return false; // don't submit the form
510						break; // select the value on enter
511				case 27: $.datepicker._hideDatepicker();
512						break; // hide on escape
513				case 33: $.datepicker._adjustDate(event.target, (event.ctrlKey ?
514							-$.datepicker._get(inst, 'stepBigMonths') :
515							-$.datepicker._get(inst, 'stepMonths')), 'M');
516						break; // previous month/year on page up/+ ctrl
517				case 34: $.datepicker._adjustDate(event.target, (event.ctrlKey ?
518							+$.datepicker._get(inst, 'stepBigMonths') :
519							+$.datepicker._get(inst, 'stepMonths')), 'M');
520						break; // next month/year on page down/+ ctrl
521				case 35: if (event.ctrlKey || event.metaKey) $.datepicker._clearDate(event.target);
522						handled = event.ctrlKey || event.metaKey;
523						break; // clear on ctrl or command +end
524				case 36: if (event.ctrlKey || event.metaKey) $.datepicker._gotoToday(event.target);
525						handled = event.ctrlKey || event.metaKey;
526						break; // current on ctrl or command +home
527				case 37: if (event.ctrlKey || event.metaKey) $.datepicker._adjustDate(event.target, (isRTL ? +1 : -1), 'D');
528						handled = event.ctrlKey || event.metaKey;
529						// -1 day on ctrl or command +left
530						if (event.originalEvent.altKey) $.datepicker._adjustDate(event.target, (event.ctrlKey ?
531									-$.datepicker._get(inst, 'stepBigMonths') :
532									-$.datepicker._get(inst, 'stepMonths')), 'M');
533						// next month/year on alt +left on Mac
534						break;
535				case 38: if (event.ctrlKey || event.metaKey) $.datepicker._adjustDate(event.target, -7, 'D');
536						handled = event.ctrlKey || event.metaKey;
537						break; // -1 week on ctrl or command +up
538				case 39: if (event.ctrlKey || event.metaKey) $.datepicker._adjustDate(event.target, (isRTL ? -1 : +1), 'D');
539						handled = event.ctrlKey || event.metaKey;
540						// +1 day on ctrl or command +right
541						if (event.originalEvent.altKey) $.datepicker._adjustDate(event.target, (event.ctrlKey ?
542									+$.datepicker._get(inst, 'stepBigMonths') :
543									+$.datepicker._get(inst, 'stepMonths')), 'M');
544						// next month/year on alt +right
545						break;
546				case 40: if (event.ctrlKey || event.metaKey) $.datepicker._adjustDate(event.target, +7, 'D');
547						handled = event.ctrlKey || event.metaKey;
548						break; // +1 week on ctrl or command +down
549				default: handled = false;
550			}
551		else if (event.keyCode == 36 && event.ctrlKey) // display the date picker on ctrl+home
552			$.datepicker._showDatepicker(this);
553		else {
554			handled = false;
555		}
556		if (handled) {
557			event.preventDefault();
558			event.stopPropagation();
559		}
560	},
561
562	/* Filter entered characters - based on date format. */
563	_doKeyPress: function(event) {
564		var inst = $.datepicker._getInst(event.target);
565		if ($.datepicker._get(inst, 'constrainInput')) {
566			var chars = $.datepicker._possibleChars($.datepicker._get(inst, 'dateFormat'));

567			var chr = String.fromCharCode(event.charCode == undefined ? event.keyCode : event.charCode);
568			return event.ctrlKey || event.metaKey || (chr < ' ' || !chars || chars.indexOf(chr) > -1);
569		}
570	},
571
572	/* Synchronise manual entry and field/alternate field. */
573	_doKeyUp: function(event) {
574		var inst = $.datepicker._getInst(event.target);
575		if (inst.input.val() != inst.lastVal) {
576			try {
577				var date = $.datepicker.parseDate($.datepicker._get(inst, 'dateFormat'),
578					(inst.input ? inst.input.val() : null),
579					$.datepicker._getFormatConfig(inst));
580				if (date) { // only if valid
581					$.datepicker._setDateFromField(inst);
582					$.datepicker._updateAlternate(inst);
583					$.datepicker._updateDatepicker(inst);
584				}
585			}
586			catch (event) {
587				$.datepicker.log(event);
588			}
589		}
590		return true;
591	},
592
593	/* Pop-up the date picker for a given input field.
594	   @param  input  element - the input field attached to the date picker or
595	                  event - if triggered by focus */
596	_showDatepicker: function(input) {
597		input = input.target || input;
598		if (input.nodeName.toLowerCase() != 'input') // find from button/image trigger
599			input = $('input', input.parentNode)[0];
600		if ($.datepicker._isDisabledDatepicker(input) || $.datepicker._lastInput == input) // already here
601			return;
602		var inst = $.datepicker._getInst(input);
603		if ($.datepicker._curInst && $.datepicker._curInst != inst) {
604			$.datepicker._curInst.dpDiv.stop(true, true);
605		}
606		var beforeShow = $.datepicker._get(inst, 'beforeShow');
607		extendRemove(inst.settings, (beforeShow ? beforeShow.apply(input, [input, inst]) : {}));
608		inst.lastVal = null;
609		$.datepicker._lastInput = input;
610		$.datepicker._setDateFromField(inst);
611		if ($.datepicker._inDialog) // hide cursor
612			input.value = '';
613		if (!$.datepicker._pos) { // position below input
614			$.datepicker._pos = $.datepicker._findPos(input);
615			$.datepicker._pos[1] += input.offsetHeight; // add the height
616		}
617		var isFixed = false;
618		$(input).parents().each(function() {
619			isFixed |= $(this).css('position') == 'fixed';
620			return !isFixed;
621		});
622		if (isFixed && $.browser.opera) { // correction for Opera when fixed and scrolled
623			$.datepicker._pos[0] -= document.documentElement.scrollLeft;
624			$.datepicker._pos[1] -= document.documentElement.scrollTop;
625		}
626		var offset = {left: $.datepicker._pos[0], top: $.datepicker._pos[1]};
627		$.datepicker._pos = null;
628		//to avoid flashes on Firefox
629		inst.dpDiv.empty();
630		// determine sizing offscreen
631		inst.dpDiv.css({position: 'absolute', display: 'block', top: '-1000px'});
632		$.datepicker._updateDatepicker(inst);
633		// fix width for dynamic number of date pickers
634		// and adjust position before showing
635		offset = $.datepicker._checkOffset(inst, offset, isFixed);
636		inst.dpDiv.css({position: ($.datepicker._inDialog && $.blockUI ?
637			'static' : (isFixed ? 'fixed' : 'absolute')), display: 'none',
638			left: offset.left + 'px', top: offset.top + 'px'});
639		if (!inst.inline) {
640			var showAnim = $.datepicker._get(inst, 'showAnim');
641			var duration = $.datepicker._get(inst, 'duration');
642			var postProcess = function() {
643				$.datepicker._datepickerShowing = true;
644				var cover = inst.dpDiv.find('iframe.ui-datepicker-cover'); // IE6- only
645				if( !! cover.length ){
646					var borders = $.datepicker._getBorders(inst.dpDiv);
647					cover.css({left: -borders[0], top: -borders[1],
648						width: inst.dpDiv.outerWidth(), height: inst.dpDiv.outerHeight()});
649				}
650			};
651			inst.dpDiv.zIndex($(input).zIndex()+1);
652			if ($.effects && $.effects[showAnim])
653				inst.dpDiv.show(showAnim, $.datepicker._get(inst, 'showOptions'), duration, postProcess);
654			else
655				inst.dpDiv[showAnim || 'show']((showAnim ? duration : null), postProcess);
656			if (!showAnim || !duration)
657				postProcess();
658			if (inst.input.is(':visible') && !inst.input.is(':disabled'))
659				inst.input.focus();
660			$.datepicker._curInst = inst;
661		}
662	},
663
664	/* Generate the date picker content. */
665	_updateDatepicker: function(inst) {
666		var self = this;
667		var borders = $.datepicker._getBorders(inst.dpDiv);
668		inst.dpDiv.empty().append(this._generateHTML(inst));

669		var cover = inst.dpDiv.find('iframe.ui-datepicker-cover'); // IE6- only
670		if( !!cover.length ){ //avoid call to outerXXXX() when not in IE6
671			cover.css({left: -borders[0], top: -borders[1], width: inst.dpDiv.outerWidth(), height: inst.dpDiv.outerHeight()})
672		}
673		inst.dpDiv.find('button, .ui-datepicker-prev, .ui-datepicker-next, .ui-datepicker-calendar td a')
674				.bind('mouseout', function(){
675					$(this).removeClass('ui-state-hover');
676					if(this.className.indexOf('ui-datepicker-prev') != -1) $(this).removeClass('ui-datepicker-prev-hover');
677					if(this.className.indexOf('ui-datepicker-next') != -1) $(this).removeClass('ui-datepicker-next-hover');
678				})
679				.bind('mouseover', function(){
680					if (!self._isDisabledDatepicker( inst.inline ? inst.dpDiv.parent()[0] : inst.input[0])) {
681						$(this).parents('.ui-datepicker-calendar').find('a').removeClass('ui-state-hover');
682						$(this).addClass('ui-state-hover');
683						if(this.className.indexOf('ui-datepicker-prev') != -1) $(this).addClass('ui-datepicker-prev-hover');
684						if(this.className.indexOf('ui-datepicker-next') != -1) $(this).addClass('ui-datepicker-next-hover');
685					}
686				})
687			.end()
688			.find('.' + this._dayOverClass + ' a')
689				.trigger('mouseover')
690			.end();
691		var numMonths = this._getNumberOfMonths(inst);
692		var cols = numMonths[1];
693		var width = 17;
694		if (cols > 1)
695			inst.dpDiv.addClass('ui-datepicker-multi-' + cols).css('width', (width * cols) + 'em');
696		else
697			inst.dpDiv.removeClass('ui-datepicker-multi-2 ui-datepicker-multi-3 ui-datepicker-multi-4').width('');
698		inst.dpDiv[(numMonths[0] != 1 || numMonths[1] != 1 ? 'add' : 'remove') +
699			'Class']('ui-datepicker-multi');
700		inst.dpDiv[(this._get(inst, 'isRTL') ? 'add' : 'remove') +
701			'Class']('ui-datepicker-rtl');
702		if (inst == $.datepicker._curInst && $.datepicker._datepickerShowing && inst.input &&
703				inst.input.is(':visible') && !inst.input.is(':disabled'))
704			inst.input.focus();
705		// deffered render of the years select (to avoid flashes on Firefox) 
706		if( inst.yearshtml ){
707			var origyearshtml = inst.yearshtml;
708			setTimeout(function(){
709				//assure that inst.yearshtml didn't change.
710				if( origyearshtml === inst.yearshtml ){
711					inst.dpDiv.find('select.ui-datepicker-year:first').replaceWith(inst.yearshtml);
712				}
713				origyearshtml = inst.yearshtml = null;
714			}, 0);
715		}
716	},
717
718	/* Retrieve the size of left and top borders for an element.
719	   @param  elem  (jQuery object) the element of interest
720	   @return  (number[2]) the left and top borders */
721	_getBorders: function(elem) {
722		var convert = function(value) {
723			return {thin: 1, medium: 2, thick: 3}[value] || value;
724		};
725		return [parseFloat(convert(elem.css('border-left-width'))),
726			parseFloat(convert(elem.css('border-top-width')))];
727	},
728
729	/* Check positioning to remain on screen. */
730	_checkOffset: function(inst, offset, isFixed) {
731		var dpWidth = inst.dpDiv.outerWidth();
732		var dpHeight = inst.dpDiv.outerHeight();
733		var inputWidth = inst.input ? inst.input.outerWidth() : 0;
734		var inputHeight = inst.input ? inst.input.outerHeight() : 0;
735		var viewWidth = document.documentElement.clientWidth + $(document).scrollLeft();
736		var viewHeight = document.documentElement.clientHeight + $(document).scrollTop();
737
738		offset.left -= (this._get(inst, 'isRTL') ? (dpWidth - inputWidth) : 0);
739		offset.left -= (isFixed && offset.left == inst.input.offset().left) ? $(document).scrollLeft() : 0;
740		offset.top -= (isFixed && offset.top == (inst.input.offset().top + inputHeight)) ? $(document).scrollTop() : 0;
741
742		// now check if datepicker is showing outside window viewport - move to a better place if so.
743		offset.left -= Math.min(offset.left, (offset.left + dpWidth > viewWidth && viewWidth > dpWidth) ?
744			Math.abs(offset.left + dpWidth - viewWidth) : 0);
745		offset.top -= Math.min(offset.top, (offset.top + dpHeight > viewHeight && viewHeight > dpHeight) ?
746			Math.abs(dpHeight + inputHeight) : 0);
747
748		return offset;
749	},
750
751	/* Find an object's position on the screen. */
752	_findPos: function(obj) {
753		var inst = this._getInst(obj);
754		var isRTL = this._get(inst, 'isRTL');
755        while (obj && (obj.type == 'hidden' || obj.nodeType != 1)) {
756            obj = obj[isRTL ? 'previousSibling' : 'nextSibling'];
757        }
758        var position = $(obj).offset();
759	    return [position.left, position.top];
760	},
761
762	/* Hide the date picker from view.
763	   @param  input  element - the input field attached to the date picker */
764	_hideDatepicker: function(input) {
765		var inst = this._curInst;
766		if (!inst || (input && inst != $.data(input, PROP_NAME)))
767			return;
768		if (this._datepickerShowing) {
769			var showAnim = this._get(inst, 'showAnim');
770			var duration = this._get(inst, 'duration');
771			var postProcess = function() {
772				$.datepicker._tidyDialog(inst);
773				this._curInst = null;
774			};
775			if ($.effects && $.effects[showAnim])
776				inst.dpDiv.hide(showAnim, $.datepicker._get(inst, 'showOptions'), duration, postProcess);
777			else
778				inst.dpDiv[(showAnim == 'slideDown' ? 'slideUp' :
779					(showAnim == 'fadeIn' ? 'fadeOut' : 'hide'))]((showAnim ? duration : null), postProcess);
780			if (!showAnim)
781				postProcess();
782			var onClose = this._get(inst, 'onClose');
783			if (onClose)
784				onClose.apply((inst.input ? inst.input[0] : null),
785					[(inst.input ? inst.input.val() : ''), inst]);  // trigger custom callback
786			this._datepickerShowing = false;
787			this._lastInput = null;
788			if (this._inDialog) {
789				this._dialogInput.css({ position: 'absolute', left: '0', top: '-100px' });
790				if ($.blockUI) {
791					$.unblockUI();
792					$('body').append(this.dpDiv);
793				}
794			}
795			this._inDialog = false;
796		}
797	},
798
799	/* Tidy up after a dialog display. */
800	_tidyDialog: function(inst) {
801		inst.dpDiv.removeClass(this._dialogClass).unbind('.ui-datepicker-calendar');
802	},
803
804	/* Close date picker if clicked elsewhere. */
805	_checkExternalClick: function(event) {
806		if (!$.datepicker._curInst)
807			return;
808		var $target = $(event.target);
809		if ($target[0].id != $.datepicker._mainDivId &&
810				$target.parents('#' + $.datepicker._mainDivId).length == 0 &&
811				!$target.hasClass($.datepicker.markerClassName) &&
812				!$target.hasClass($.datepicker._triggerClass) &&
813				$.datepicker._datepickerShowing && !($.datepicker._inDialog && $.blockUI))
814			$.datepicker._hideDatepicker();
815	},
816
817	/* Adjust one of the date sub-fields. */
818	_adjustDate: function(id, offset, period) {
819		var target = $(id);
820		var inst = this._getInst(target[0]);
821		if (this._isDisabledDatepicker(target[0])) {
822			return;
823		}
824		this._adjustInstDate(inst, offset +
825			(period == 'M' ? this._get(inst, 'showCurrentAtPos') : 0), // undo positioning
826			period);
827		this._updateDatepicker(inst);
828	},
829
830	/* Action for current link. */
831	_gotoToday: function(id) {
832		var target = $(id);
833		var inst = this._getInst(target[0]);
834		if (this._get(inst, 'gotoCurrent') && inst.currentDay) {
835			inst.selectedDay = inst.currentDay;
836			inst.drawMonth = inst.selectedMonth = inst.currentMonth;
837			inst.drawYear = inst.selectedYear = inst.currentYear;
838		}
839		else {
840			var date = new Date();
841			inst.selectedDay = date.getDate();
842			inst.drawMonth = inst.selectedMonth = date.getMonth();
843			inst.drawYear = inst.selectedYear = date.getFullYear();
844		}
845		this._notifyChange(inst);
846		this._adjustDate(target);
847	},
848
849	/* Action for selecting a new month/year. */

850	_selectMonthYear: function(id, select, period) {
851		var target = $(id);
852		var inst = this._getInst(target[0]);
853		inst._selectingMonthYear = false;
854		inst['selected' + (period == 'M' ? 'Month' : 'Year')] =
855		inst['draw' + (period == 'M' ? 'Month' : 'Year')] =
856			parseInt(select.options[select.selectedIndex].value,10);
857		this._notifyChange(inst);
858		this._adjustDate(target);
859	},
860
861	/* Restore input focus after not changing month/year. */
862	_clickMonthYear: function(id) {
863		var target = $(id);
864		var inst = this._getInst(target[0]);
865		if (inst.input && inst._selectingMonthYear) {
866			setTimeout(function() {
867				inst.input.focus();
868			}, 0);
869		}
870		inst._selectingMonthYear = !inst._selectingMonthYear;
871	},
872
873	/* Action for selecting a day. */
874	_selectDay: function(id, month, year, td) {
875		var target = $(id);
876		if ($(td).hasClass(this._unselectableClass) || this._isDisabledDatepicker(target[0])) {
877			return;
878		}
879		var inst = this._getInst(target[0]);
880		inst.selectedDay = inst.currentDay = $('a', td).html();
881		inst.selectedMonth = inst.currentMonth = month;
882		inst.selectedYear = inst.currentYear = year;
883		this._selectDate(id, this._formatDate(inst,
884			inst.currentDay, inst.currentMonth, inst.currentYear));
885	},
886
887	/* Erase the input field and hide the date picker. */
888	_clearDate: function(id) {
889		var target = $(id);
890		var inst = this._getInst(target[0]);
891		this._selectDate(target, '');
892	},
893
894	/* Update the input field with the selected date. */
895	_selectDate: function(id, dateStr) {
896		var target = $(id);
897		var inst = this._getInst(target[0]);
898		dateStr = (dateStr != null ? dateStr : this._formatDate(inst));
899		if (inst.input)
900			inst.input.val(dateStr);
901		this._updateAlternate(inst);
902		var onSelect = this._get(inst, 'onSelect');
903		if (onSelect)
904			onSelect.apply((inst.input ? inst.input[0] : null), [dateStr, inst]);  // trigger custom callback
905		else if (inst.input)
906			inst.input.trigger('change'); // fire the change event
907		if (inst.inline)
908			this._updateDatepicker(inst);
909		else {
910			this._hideDatepicker();
911			this._lastInput = inst.input[0];
912			if (typeof(inst.input[0]) != 'object')
913				inst.input.focus(); // restore focus
914			this._lastInput = null;
915		}
916	},
917
918	/* Update any alternate field to synchronise with the main field. */
919	_updateAlternate: function(inst) {
920		var altField = this._get(inst, 'altField');
921		if (altField) { // update alternate field too
922			var altFormat = this._get(inst, 'altFormat') || this._get(inst, 'dateFormat');
923			var date = this._getDate(inst);
924			var dateStr = this.formatDate(altFormat, date, this._getFormatConfig(inst));
925			$(altField).each(function() { $(this).val(dateStr); });
926		}
927	},
928
929	/* Set as beforeShowDay function to prevent selection of weekends.
930	   @param  date  Date - the date to customise
931	   @return [boolean, string] - is this date selectable?, what is its CSS class? */
932	noWeekends: function(date) {
933		var day = date.getDay();
934		return [(day > 0 && day < 6), ''];
935	},
936
937	/* Set as calculateWeek to determine the week of the year based on the ISO 8601 definition.
938	   @param  date  Date - the date to get the week for
939	   @return  number - the number of the week within the year that contains this date */
940	iso8601Week: function(date) {
941		var checkDate = new Date(date.getTime());
942		// Find Thursday of this week starting on Monday
943		checkDate.setDate(checkDate.getDate() + 4 - (checkDate.getDay() || 7));
944		var time = checkDate.getTime();
945		checkDate.setMonth(0); // Compare with Jan 1
946		checkDate.setDate(1);
947		return Math.floor(Math.round((time - checkDate) / 86400000) / 7) + 1;
948	},
949
950	/* Parse a string value into a date object.
951	   See formatDate below for the possible formats.
952
953	   @param  format    string - the expected format of the date
954	   @param  value     string - the date in the above format
955	   @param  settings  Object - attributes include:
956	                     shortYearCutoff  number - the cutoff year for determining the century (optional)
957	                     dayNamesShort    string[7] - abbreviated names of the days from Sunday (optional)

958	                     dayNames         string[7] - names of the days from Sunday (optional)
959	                     monthNamesShort  string[12] - abbreviated names of the months (optional)
960	                     monthNames       string[12] - names of the months (optional)
961	   @return  Date - the extracted date value or null if value is blank */
962	parseDate: function (format, value, settings) {
963		if (format == null || value == null)
964			throw 'Invalid arguments';
965		value = (typeof value == 'object' ? value.toString() : value + '');
966		if (value == '')
967			return null;
968		var shortYearCutoff = (settings ? settings.shortYearCutoff : null) || this._defaults.shortYearCutoff;
969		var dayNamesShort = (settings ? settings.dayNamesShort : null) || this._defaults.dayNamesShort;
970		var dayNames = (settings ? settings.dayNames : null) || this._defaults.dayNames;
971		var monthNamesShort = (settings ? settings.monthNamesShort : null) || this._defaults.monthNamesShort;
972		var monthNames = (settings ? settings.monthNames : null) || this._defaults.monthNames;
973		var year = -1;
974		var month = -1;
975		var day = -1;
976		var doy = -1;
977		var literal = false;
978		// Check whether a format character is doubled
979		var lookAhead = function(match) {
980			var matches = (iFormat + 1 < format.length && format.charAt(iFormat + 1) == match);
981			if (matches)
982				iFormat++;
983			return matches;
984		};
985		// Extract a number from the string value
986		var getNumber = function(match) {
987			var isDoubled = lookAhead(match);
988			var size = (match == '@' ? 14 : (match == '!' ? 20 :
989				(match == 'y' && isDoubled ? 4 : (match == 'o' ? 3 : 2))));
990			var digits = new RegExp('^\\d{1,' + size + '}');
991			var num = value.substring(iValue).match(digits);
992			if (!num)
993				throw 'Missing number at position ' + iValue;
994			iValue += num[0].length;
995			return parseInt(num[0], 10);
996		};
997		// Extract a name from the string value and convert to an index
998		var getName = function(match, shortNames, longNames) {
999			var names = (lookAhead(match) ? longNames : shortNames);
1000			for (var i = 0; i < names.length; i++) {
1001				if (value.substr(iValue, names[i].length).toLowerCase() == names[i].toLowerCase()) {
1002					iValue += names[i].length;
1003					return i + 1;
1004				}
1005			}
1006			throw 'Unknown name at position ' + iValue;
1007		};
1008		// Confirm that a literal character matches the string value
1009		var checkLiteral = function() {
1010			if (value.charAt(iValue) != format.charAt(iFormat))
1011				throw 'Unexpected literal at position ' + iValue;
1012			iValue++;
1013		};
1014		var iValue = 0;
1015		for (var iFormat = 0; iFormat < format.length; iFormat++) {
1016			if (literal)
1017				if (format.charAt(iFormat) == "'" && !lookAhead("'"))
1018					literal = false;
1019				else
1020					checkLiteral();
1021			else
1022				switch (format.charAt(iFormat)) {
1023					case 'd':
1024						day = getNumber('d');
1025						break;
1026					case 'D':
1027						getName('D', dayNamesShort, dayNames);
1028						break;
1029					case 'o':
1030						doy = getNumber('o');
1031						break;
1032					case 'm':
1033						month = getNumber('m');
1034						break;
1035					case 'M':
1036						month = getName('M', monthNamesShort, monthNames);
1037						break;
1038					case 'y':
1039						year = getNumber('y');
1040						break;
1041					case '@':
1042						var date = new Date(getNumber('@'));
1043						year = date.getFullYear();
1044						month = date.getMonth() + 1;
1045						day = date.getDate();
1046						break;
1047					case '!':
1048						var date = new Date((getNumber('!') - this._ticksTo1970) / 10000);
1049						year = date.getFullYear();
1050						month = date.getMonth() + 1;
1051						day = date.getDate();
1052						break;
1053					case "'":
1054						if (lookAhead("'"))
1055							checkLiteral();
1056						else
1057							literal = true;
1058						break;
1059					default:
1060						checkLiteral();
1061				}
1062		}
1063		if (year == -1)
1064			year = new Date().getFullYear();
1065		else if (year < 100)
1066			year += new Date().getFullYear() - new Date().getFullYear() % 100 +
1067				(year <= shortYearCutoff ? 0 : -100);
1068		if (doy > -1) {
1069			month = 1;
1070			day = doy;
1071			do {
1072				var dim = this._getDaysInMonth(year, month - 1);
1073				if (day <= dim)
1074					break;
1075				month++;
1076				day -= dim;
1077			} while (true);
1078		}
1079		var date = this._daylightSavingAdjust(new Date(year, month - 1, day));
1080		if (date.getFullYear() != year || date.getMonth() + 1 != month || date.getDate() != day)
1081			throw 'Invalid date'; // E.g. 31/02/*
1082		return date;
1083	},
1084
1085	/* Standard date formats. */
1086	ATOM: 'yy-mm-dd', // RFC 3339 (ISO 8601)
1087	COOKIE: 'D, dd M yy',
1088	ISO_8601: 'yy-mm-dd',
1089	RFC_822: 'D, d M y',
1090	RFC_850: 'DD, dd-M-y',
1091	RFC_1036: 'D, d M y',
1092	RFC_1123: 'D, d M yy',
1093	RFC_2822: 'D, d M yy',
1094	RSS: 'D, d M y', // RFC 822
1095	TICKS: '!',
1096	TIMESTAMP: '@',
1097	W3C: 'yy-mm-dd', // ISO 8601
1098
1099	_ticksTo1970: (((1970 - 1) * 365 + Math.floor(1970 / 4) - Math.floor(1970 / 100) +
1100		Math.floor(1970 / 400)) * 24 * 60 * 60 * 10000000),
1101
1102	/* Format a date object into a string value.
1103	   The format can be combinations of the following:
1104	   d  - day of month (no leading zero)
1105	   dd - day of month (two digit)
1106	   o  - day of year (no leading zeros)
1107	   oo - day of year (three digit)
1108	   D  - day name short
1109	   DD - day name long
1110	   m  - month of year (no leading zero)
1111	   mm - month of year (two digit)
1112	   M  - month name short
1113	   MM - month name long
1114	   y  - year (two digit)
1115	   yy - year (four digit)
1116	   @ - Unix timestamp (ms since 01/01/1970)
1117	   ! - Windows ticks (100ns since 01/01/0001)
1118	   '...' - literal text
1119	   '' - single quote
1120

1121	   @param  format    string - the desired format of the date
1122	   @param  date      Date - the date value to format
1123	   @param  settings  Object - attributes include:
1124	                     dayNamesShort    string[7] - abbreviated names of the days from Sunday (optional)
1125	                     dayNames         string[7] - names of the days from Sunday (optional)
1126	                     monthNamesShort  string[12] - abbreviated names of the months (optional)
1127	                     monthNames       string[12] - names of the months (optional)
1128	   @return  string - the date in the above format */
1129	formatDate: function (format, date, settings) {
1130		if (!date)
1131			return '';
1132		var dayNamesShort = (settings ? settings.dayNamesShort : null) || this._defaults.dayNamesShort;
1133		var dayNames = (settings ? settings.dayNames : null) || this._defaults.dayNames;
1134		var monthNamesShort = (settings ? settings.monthNamesShort : null) || this._defaults.monthNamesShort;
1135		var monthNames = (settings ? settings.monthNames : null) || this._defaults.monthNames;
1136		// Check whether a format character is doubled
1137		var lookAhead = function(match) {
1138			var matches = (iFormat + 1 < format.length && format.charAt(iFormat + 1) == match);
1139			if (matches)
1140				iFormat++;
1141			return matches;
1142		};
1143		// Format a number, with leading zero if necessary
1144		var formatNumber = function(match, value, len) {
1145			var num = '' + value;
1146			if (lookAhead(match))
1147				while (num.length < len)
1148					num = '0' + num;
1149			return num;
1150		};
1151		// Format a name, short or long as requested
1152		var formatName = function(match, value, shortNames, longNames) {
1153			return (lookAhead(match) ? longNames[value] : shortNames[value]);
1154		};
1155		var output = '';
1156		var literal = false;
1157		if (date)
1158			for (var iFormat = 0; iFormat < format.length; iFormat++) {
1159				if (literal)
1160					if (format.charAt(iFormat) == "'" && !lookAhead("'"))
1161						literal = false;
1162					else
1163						output += format.charAt(iFormat);
1164				else
1165					switch (format.charAt(iFormat)) {
1166						case 'd':
1167							output += formatNumber('d', date.getDate(), 2);
1168							break;
1169						case 'D':
1170							output += formatName('D', date.getDay(), dayNamesShort, dayNames);
1171							break;
1172						case 'o':
1173							output += formatNumber('o',
1174								(date.getTime() - new Date(date.getFullYear(), 0, 0).getTime()) / 86400000, 3);
1175							break;
1176						case 'm':
1177							output += formatNumber('m', date.getMonth() + 1, 2);
1178							break;
1179						case 'M':
1180							output += formatName('M', date.getMonth(), monthNamesShort, monthNames);
1181							break;
1182						case 'y':
1183							output += (lookAhead('y') ? date.getFullYear() :
1184								(date.getYear() % 100 < 10 ? '0' : '') + date.getYear() % 100);
1185							break;
1186						case '@':
1187							output += date.getTime();
1188							break;
1189						case '!':
1190							output += date.getTime() * 10000 + this._ticksTo1970;
1191							break;
1192						case "'":
1193							if (lookAhead("'"))
1194								output += "'";
1195							else
1196								literal = true;
1197							break;
1198						default:
1199							output += format.charAt(iFormat);
1200					}
1201			}
1202		return output;
1203	},
1204
1205	/* Extract all possible characters from the date format. */
1206	_possibleChars: function (format) {
1207		var chars = '';
1208		var literal = false;
1209		// Check whether a format character is doubled
1210		var lookAhead = function(match) {
1211			var matches = (iFormat + 1 < format.length && format.charAt(iFormat + 1) == match);
1212			if (matches)
1213				iFormat++;
1214			return matches;
1215		};
1216		for (var iFormat = 0; iFormat < format.length; iFormat++)
1217			if (literal)
1218				if (format.charAt(iFormat) == "'" && !lookAhead("'"))
1219					literal = false;
1220				else
1221					chars += format.charAt(iFormat);
1222			else
1223				switch (format.charAt(iFormat)) {
1224					case 'd': case 'm': case 'y': case '@':
1225						chars += '0123456789';
1226						break;
1227					case 'D': case 'M':
1228						return null; // Accept anything
1229					case "'":
1230						if (lookAhead("'"))
1231							chars += "'";
1232						else
1233							literal = true;
1234						break;
1235					default:
1236						chars += format.charAt(iFormat);
1237				}
1238		return chars;
1239	},
1240
1241	/* Get a setting value, defaulting if necessary. */
1242	_get: function(inst, name) {
1243		return inst.settings[name] !== undefined ?
1244			inst.settings[name] : this._defaults[name];
1245	},
1246
1247	/* Parse existing date and initialise date picker. */
1248	_setDateFromField: function(inst, noDefault) {
1249		if (inst.input.val() == inst.lastVal) {
1250			return;
1251		}
1252		var dateFormat = this._get(inst, 'dateFormat');
1253		var dates = inst.lastVal = inst.input ? inst.input.val() : null;
1254		var date, defaultDate;
1255		date = defaultDate = this._getDefaultDate(inst);
1256		var settings = this._getFormatConfig(inst);
1257		try {
1258			date = this.parseDate(dateFormat, dates, settings) || defaultDate;
1259		} catch (event) {
1260			this.log(event);
1261			dates = (noDefault ? '' : dates);
1262		}
1263		inst.selectedDay = date.getDate();
1264		inst.drawMonth = inst.selectedMonth = date.getMonth();
1265		inst.drawYear = inst.selectedYear = date.getFullYear();
1266		inst.currentDay = (dates ? date.getDate() : 0);
1267		inst.currentMonth = (dates ? date.getMonth() : 0);
1268		inst.currentYear = (dates ? date.getFullYear() : 0);
1269		this._adjustInstDate(inst);
1270	},
1271
1272	/* Retrieve the default date shown on opening. */
1273	_getDefaultDate: function(inst) {
1274		return this._restrictMinMax(inst,
1275			this._determineDate(inst, this._get(inst, 'defaultDate'), new Date()));
1276	},
1277
1278	/* A date may be specified as an exact value or a relative one. */
1279	_determineDate: function(inst, date, defaultDate) {
1280		var offsetNumeric = function(offset) {
1281			var date = new Date();
1282			date.setDate(date.getDate() + offset);
1283			return date;
1284		};
1285		var offsetString = function(offset) {
1286			try {
1287				return $.datepicker.parseDate($.datepicker._get(inst, 'dateFormat'),
1288					offset, $.datepicker._getFormatConfig(inst));
1289			}
1290			catch (e) {
1291				// Ignore
1292			}
1293			var date = (offset.toLowerCase().match(/^c/) ?
1294				$.datepicker._getDate(inst) : null) || new Date();
1295			var year = date.getFullYear();

1296			var month = date.getMonth();
1297			var day = date.getDate();
1298			var pattern = /([+-]?[0-9]+)\s*(d|D|w|W|m|M|y|Y)?/g;
1299			var matches = pattern.exec(offset);
1300			while (matches) {
1301				switch (matches[2] || 'd') {
1302					case 'd' : case 'D' :
1303						day += parseInt(matches[1],10); break;
1304					case 'w' : case 'W' :
1305						day += parseInt(matches[1],10) * 7; break;
1306					case 'm' : case 'M' :
1307						month += parseInt(matches[1],10);
1308						day = Math.min(day, $.datepicker._getDaysInMonth(year, month));
1309						break;
1310					case 'y': case 'Y' :
1311						year += parseInt(matches[1],10);
1312						day = Math.min(day, $.datepicker._getDaysInMonth(year, month));
1313						break;
1314				}
1315				matches = pattern.exec(offset);
1316			}
1317			return new Date(year, month, day);
1318		};
1319		var newDate = (date == null || date === '' ? defaultDate : (typeof date == 'string' ? offsetString(date) :
1320			(typeof date == 'number' ? (isNaN(date) ? defaultDate : offsetNumeric(date)) : new Date(date.getTime()))));
1321		newDate = (newDate && newDate.toString() == 'Invalid Date' ? defaultDate : newDate);
1322		if (newDate) {
1323			newDate.setHours(0);
1324			newDate.setMinutes(0);
1325			newDate.setSeconds(0);
1326			newDate.setMilliseconds(0);
1327		}
1328		return this._daylightSavingAdjust(newDate);
1329	},
1330
1331	/* Handle switch to/from daylight saving.
1332	   Hours may be non-zero on daylight saving cut-over:
1333	   > 12 when midnight changeover, but then cannot generate
1334	   midnight datetime, so jump to 1AM, otherwise reset.
1335	   @param  date  (Date) the date to check
1336	   @return  (Date) the corrected date */
1337	_daylightSavingAdjust: function(date) {
1338		if (!date) return null;
1339		date.setHours(date.getHours() > 12 ? date.getHours() + 2 : 0);
1340		return date;
1341	},
1342
1343	/* Set the date(s) directly. */
1344	_setDate: function(inst, date, noChange) {
1345		var clear = !date;
1346		var origMonth = inst.selectedMonth;
1347		var origYear = inst.selectedYear;
1348		var newDate = this._restrictMinMax(inst, this._determineDate(inst, date, new Date()));
1349		inst.selectedDay = inst.currentDay = newDate.getDate();
1350		inst.drawMonth = inst.selectedMonth = inst.currentMonth = newDate.getMonth();
1351		inst.drawYear = inst.selectedYear = inst.currentYear = newDate.getFullYear();
1352		if ((origMonth != inst.selectedMonth || origYear != inst.selectedYear) && !noChange)
1353			this._notifyChange(inst);
1354		this._adjustInstDate(inst);
1355		if (inst.input) {
1356			inst.input.val(clear ? '' : this._formatDate(inst));
1357		}
1358	},
1359
1360	/* Retrieve the date(s) directly. */
1361	_getDate: function(inst) {
1362		var startDate = (!inst.currentYear || (inst.input && inst.input.val() == '') ? null :
1363			this._daylightSavingAdjust(new Date(
1364			inst.currentYear, inst.currentMonth, inst.currentDay)));
1365			return startDate;
1366	},
1367
1368	/* Generate the HTML for the current state of the date picker. */
1369	_generateHTML: function(inst) {
1370		var today = new Date();
1371		today = this._daylightSavingAdjust(
1372			new Date(today.getFullYear(), today.getMonth(), today.getDate())); // clear time
1373		var isRTL = this._get(inst, 'isRTL');
1374		var showButtonPanel = this._get(inst, 'showButtonPanel');
1375		var hideIfNoPrevNext = this._get(inst, 'hideIfNoPrevNext');
1376		var navigationAsDateFormat = this._get(inst, 'navigationAsDateFormat');
1377		var numMonths = this._getNumberOfMonths(inst);
1378		var showCurrentAtPos = this._get(inst, 'showCurrentAtPos');
1379		var stepMonths = this._get(inst, 'stepMonths');
1380		var isMultiMonth = (numMonths[0] != 1 || numMonths[1] != 1);
1381		var currentDate = this._daylightSavingAdjust((!inst.currentDay ? new Date(9999, 9, 9) :
1382			new Date(inst.currentYear, inst.currentMonth, inst.currentDay)));
1383		var minDate = this._getMinMaxDate(inst, 'min');
1384		var maxDate = this._getMinMaxDate(inst, 'max');
1385		var drawMonth = inst.drawMonth - showCurrentAtPos;
1386		var drawYear = inst.drawYear;
1387		if (drawMonth < 0) {
1388			drawMonth += 12;
1389			drawYear--;
1390		}
1391		if (maxDate) {
1392			var maxDraw = this._daylightSavingAdjust(new Date(maxDate.getFullYear(),
1393				maxDate.getMonth() - (numMonths[0] * numMonths[1]) + 1, maxDate.getDate()));
1394			maxDraw = (minDate && maxDraw < minDate ? minDate : maxDraw);
1395			while (this._daylightSavingAdjust(new Date(drawYear, drawMonth, 1)) > maxDraw) {
1396				drawMonth--;
1397				if (drawMonth < 0) {
1398					drawMonth = 11;
1399					drawYear--;
1400				}
1401			}
1402		}
1403		inst.drawMonth = drawMonth;
1404		inst.drawYear = drawYear;
1405		var prevText = this._get(inst, 'prevText');
1406		prevText = (!navigationAsDateFormat ? prevText : this.formatDate(prevText,
1407			this._daylightSavingAdjust(new Date(drawYear, drawMonth - stepMonths, 1)),
1408			this._getFormatConfig(inst)));
1409		var prev = (this._canAdjustMonth(inst, -1, drawYear, drawMonth) ?
1410			'<a class="ui-datepicker-prev ui-corner-all" onclick="DP_jQuery_' + dpuuid +
1411			'.datepicker._adjustDate(\'#' + inst.id + '\', -' + stepMonths + ', \'M\');"' +
1412			' title="' + prevText + '"><span class="ui-icon ui-icon-circle-triangle-' + ( isRTL ? 'e' : 'w') + '">' + prevText + '</span></a>' :
1413			(hideIfNoPrevNext ? '' : '<a class="ui-datepicker-prev ui-corner-all ui-state-disabled" title="'+ prevText +'"><span class="ui-icon ui-icon-circle-triangle-' + ( isRTL ? 'e' : 'w') + '">' + prevText + '</span></a>'));
1414		var nextText = this._get(inst, 'nextText');
1415		nextText = (!navigationAsDateFormat ? nextText : this.formatDate(nextText,
1416			this._daylightSavingAdjust(new Date(drawYear, drawMonth + stepMonths, 1)),
1417			this._getFormatConfig(inst)));
1418		var next = (this._canAdjustMonth(inst, +1, drawYear, drawMonth) ?
1419			'<a class="ui-datepicker-next ui-corner-all" onclick="DP_jQuery_' + dpuuid +
1420			'.datepicker._adjustDate(\'#' + inst.id + '\', +' + stepMonths + ', \'M\');"' +
1421			' title="' + nextText + '"><span class="ui-icon ui-icon-circle-triangle-' + ( isRTL ? 'w' : 'e') + '">' + nextText + '</span></a>' :
1422			(hideIfNoPrevNext ? '' : '<a class="ui-datepicker-next ui-corner-all ui-state-disabled" title="'+ nextText + '"><span class="ui-icon ui-icon-circle-triangle-' + ( isRTL ? 'w' : 'e') + '">' + nextText + '</span></a>'));
1423		var currentText = this._get(inst, 'currentText');
1424		var gotoDate = (this._get(inst, 'gotoCurrent') && inst.currentDay ? currentDate : today);
1425		currentText = (!navigationAsDateFormat ? currentText :
1426			this.formatDate(currentText, gotoDate, this._getFormatConfig(inst)));
1427		var controls = (!inst.inline ? '<button type="button" class="ui-datepicker-close ui-state-default ui-priority-primary ui-corner-all" onclick="DP_jQuery_' + dpuuid +
1428			'.datepicker._hideDatepicker();">' + this._get(inst, 'closeText') + '</button>' : '');
1429		var buttonPanel = (showButtonPanel) ? '<div class="ui-datepicker-buttonpane ui-widget-content">' + (isRTL ? controls : '') +
1430			(this._isInRange(inst, gotoDate) ? '<button type="button" class="ui-datepicker-current ui-state-default ui-priority-secondary ui-corner-all" onclick="DP_jQuery_' + dpuuid +
1431			'.datepicker._gotoToday(\'#' + inst.id + '\');"' +
1432			'>' + currentText + '</button>' : '') + (isRTL ? '' : controls) + '</div>' : '';
1433		var firstDay = parseInt(this._get(inst, 'firstDay'),10);
1434		firstDay = (isNaN(firstDay) ? 0 : firstDay);
1435		var showWeek = this._get(inst, 'showWeek');
1436		var dayNames = this._get(inst, 'dayNames');
1437		var dayNamesShort = this._get(inst, 'dayNamesShort');
1438		var dayNamesMin = this._get(inst, 'dayNamesMin');
1439		var monthNames = this._get(inst, 'monthNames');
1440		var monthNamesShort = this._get(inst, 'monthNamesShort');
1441		var beforeShowDay = this._get(inst, 'beforeShowDay');
1442		var showOtherMonths = this._get(inst, 'showOtherMonths');
1443		var selectOtherMonths = this._get(inst, 'selectOtherMonths');
1444		var calculateWeek = this._get(inst, 'calculateWeek') || this.iso8601Week;
1445		var defaultDate = this._getDefaultDate(inst);
1446		var html = '';
1447		for (var row = 0; row < numMonths[0]; row++) {
1448			var group = '';
1449			for (var col = 0; col < numMonths[1]; col++) {
1450				var selectedDate = this._daylightSavingAdjust(new Date(drawYear, drawMonth, inst.selectedDay));
1451				var cornerClass = ' ui-corner-all';
1452				var calender = '';
1453				if (isMultiMonth) {
1454					calender += '<div class="ui-datepicker-group';
1455					if (numMonths[1] > 1)
1456						switch (col) {
1457							case 0: calender += ' ui-datepicker-group-first';
1458								cornerClass = ' ui-corner-' + (isRTL ? 'right' : 'left'); break;
1459							case numMonths[1]-1: calender += ' ui-datepicker-group-last';
1460								cornerClass = ' ui-corner-' + (isRTL ? 'left' : 'right'); break;
1461							default: calender += ' ui-datepicker-group-middle'; cornerClass = ''; break;
1462						}
1463					calender += '">';
1464				}
1465				calender += '<div class="ui-datepicker-header ui-widget-header ui-helper-clearfix' + cornerClass + '">' +
1466					(/all|left/.test(cornerClass) && row == 0 ? (isRTL ? next : prev) : '') +
1467					(/all|right/.test(cornerClass) && row == 0 ? (isRTL ? prev : next) : '') +
1468					this._generateMonthYearHeader(inst, drawMonth, drawYear, minDate, maxDate,
1469					row > 0 || col > 0, monthNames, monthNamesShort) + // draw month headers
1470					'</div><table class="ui-datepicker-calendar"><thead>' +
1471					'<tr>';
1472				var thead = (showWeek ? '<th class="ui-datepicker-week-col">' + this._get(inst, 'weekHeader') + '</th>' : '');
1473				for (var dow = 0; dow < 7; dow++) { // days of the week
1474					var day = (dow + firstDay) % 7;
1475					thead += '<th' + ((dow + firstDay + 6) % 7 >= 5 ? ' class="ui-datepicker-week-end"' : '') + '>

1475' +
1476						'<span title="' + dayNames[day] + '">' + dayNamesMin[day] + '</span></th>';
1477				}
1478				calender += thead + '</tr></thead><tbody>';
1479				var daysInMonth = this._getDaysInMonth(drawYear, drawMonth);
1480				if (drawYear == inst.selectedYear && drawMonth == inst.selectedMonth)
1481					inst.selectedDay = Math.min(inst.selectedDay, daysInMonth);
1482				var leadDays = (this._getFirstDayOfMonth(drawYear, drawMonth) - firstDay + 7) % 7;
1483				var numRows = (isMultiMonth ? 6 : Math.ceil((leadDays + daysInMonth) / 7)); // calculate the number of rows to generate
1484				var printDate = this._daylightSavingAdjust(new Date(drawYear, drawMonth, 1 - leadDays));
1485				for (var dRow = 0; dRow < numRows; dRow++) { // create date picker rows
1486					calender += '<tr>';
1487					var tbody = (!showWeek ? '' : '<td class="ui-datepicker-week-col">' +
1488						this._get(inst, 'calculateWeek')(printDate) + '</td>');
1489					for (var dow = 0; dow < 7; dow++) { // create date picker days
1490						var daySettings = (beforeShowDay ?
1491							beforeShowDay.apply((inst.input ? inst.input[0] : null), [printDate]) : [true, '']);
1492						var otherMonth = (printDate.getMonth() != drawMonth);
1493						var unselectable = (otherMonth && !selectOtherMonths) || !daySettings[0] ||
1494							(minDate && printDate < minDate) || (maxDate && printDate > maxDate);
1495						tbody += '<td class="' +
1496							((dow + firstDay + 6) % 7 >= 5 ? ' ui-datepicker-week-end' : '') + // highlight weekends
1497							(otherMonth ? ' ui-datepicker-other-month' : '') + // highlight days from other months
1498							((printDate.getTime() == selectedDate.getTime() && drawMonth == inst.selectedMonth && inst._keyEvent) || // user pressed key
1499							(defaultDate.getTime() == printDate.getTime() && defaultDate.getTime() == selectedDate.getTime()) ?
1500							// or defaultDate is current printedDate and defaultDate is selectedDate
1501							' ' + this._dayOverClass : '') + // highlight selected day
1502							(unselectable ? ' ' + this._unselectableClass + ' ui-state-disabled': '') +  // highlight unselectable days
1503							(otherMonth && !showOtherMonths ? '' : ' ' + daySettings[1] + // highlight custom dates
1504							(printDate.getTime() == currentDate.getTime() ? ' ' + this._currentClass : '') + // highlight selected day
1505							(printDate.getTime() == today.getTime() ? ' ui-datepicker-today' : '')) + '"' + // highlight today (if different)
1506							((!otherMonth || showOtherMonths) && daySettings[2] ? ' title="' + daySettings[2] + '"' : '') + // cell title
1507							(unselectable ? '' : ' onclick="DP_jQuery_' + dpuuid + '.datepicker._selectDay(\'#' +
1508							inst.id + '\',' + printDate.getMonth() + ',' + printDate.getFullYear() + ', this);return false;"') + '>' + // actions
1509							(otherMonth && !showOtherMonths ? '&#xa0;' : // display for other months
1510							(unselectable ? '<span class="ui-state-default">' + printDate.getDate() + '</span>' : '<a class="ui-state-default' +
1511							(printDate.getTime() == today.getTime() ? ' ui-state-highlight' : '') +
1512							(printDate.getTime() == currentDate.getTime() ? ' ui-state-active' : '') + // highlight selected day
1513							(otherMonth ? ' ui-priority-secondary' : '') + // distinguish dates from other months
1514							'" href="#">' + printDate.getDate() + '</a>')) + '</td>'; // display selectable date
1515						printDate.setDate(printDate.getDate() + 1);
1516						printDate = this._daylightSavingAdjust(printDate);
1517					}
1518					calender += tbody + '</tr>';
1519				}
1520				drawMonth++;
1521				if (drawMonth > 11) {
1522					drawMonth = 0;
1523					drawYear++;
1524				}
1525				calender += '</tbody></table>' + (isMultiMonth ? '</div>' + 
1526							((numMonths[0] > 0 && col == numMonths[1]-1) ? '<div class="ui-datepicker-row-break"></div>' : '') : '');
1527				group += calender;
1528			}
1529			html += group;
1530		}
1531		html += buttonPanel + ($.browser.msie && parseInt($.browser.version,10) < 7 && !inst.inline ?
1532			'<iframe src="javascript:false;" class="ui-datepicker-cover" frameborder="0"></iframe>' : '');
1533		inst._keyEvent = false;
1534		return html;
1535	},
1536
1537	/* Generate the month and year header. */
1538	_generateMonthYearHeader: function(inst, drawMonth, drawYear, minDate, maxDate,
1539			secondary, monthNames, monthNamesShort) {
1540		var changeMonth = this._get(inst, 'changeMonth');
1541		var changeYear = this._get(inst, 'changeYear');
1542		var showMonthAfterYear = this._get(inst, 'showMonthAfterYear');
1543		var html = '<div class="ui-datepicker-title">';
1544		var monthHtml = '';
1545		// month selection
1546		if (secondary || !changeMonth)
1547			monthHtml += '<span class="ui-datepicker-month">' + monthNames[drawMonth] + '</span>';
1548		else {
1549			var inMinYear = (minDate && minDate.getFullYear() == drawYear);
1550			var inMaxYear = (maxDate && maxDate.getFullYear() == drawYear);
1551			monthHtml += '<select class="ui-datepicker-month" ' +
1552				'onchange="DP_jQuery_' + dpuuid + '.datepicker._selectMonthYear(\'#' + inst.id + '\', this, \'M\');" ' +
1553				'onclick="DP_jQuery_' + dpuuid + '.datepicker._clickMonthYear(\'#' + inst.id + '\');"' +
1554			 	'>';

1555			for (var month = 0; month < 12; month++) {
1556				if ((!inMinYear || month >= minDate.getMonth()) &&
1557						(!inMaxYear || month <= maxDate.getMonth()))
1558					monthHtml += '<option value="' + month + '"' +
1559						(month == drawMonth ? ' selected="selected"' : '') +
1560						'>' + monthNamesShort[month] + '</option>';
1561			}
1562			monthHtml += '</select>';
1563		}
1564		if (!showMonthAfterYear)
1565			html += monthHtml + (secondary || !(changeMonth && changeYear) ? '&#xa0;' : '');
1566		// year selection
1567		inst.yearshtml = '';
1568		if (secondary || !changeYear)
1569			html += '<span class="ui-datepicker-year">' + drawYear + '</span>';
1570		else {
1571			// determine range of years to display
1572			var years = this._get(inst, 'yearRange').split(':');
1573			var thisYear = new Date().getFullYear();
1574			var determineYear = function(value) {
1575				var year = (value.match(/c[+-].*/) ? drawYear + parseInt(value.substring(1), 10) :
1576					(value.match(/[+-].*/) ? thisYear + parseInt(value, 10) :
1577					parseInt(value, 10)));
1578				return (isNaN(year) ? thisYear : year);
1579			};
1580			var year = determineYear(years[0]);
1581			var endYear = Math.max(year, determineYear(years[1] || ''));
1582			year = (minDate ? Math.max(year, minDate.getFullYear()) : year);
1583			endYear = (maxDate ? Math.min(endYear, maxDate.getFullYear()) : endYear);
1584			inst.yearshtml += '<select class="ui-datepicker-year" ' +
1585				'onchange="DP_jQuery_' + dpuuid + '.datepicker._selectMonthYear(\'#' + inst.id + '\', this, \'Y\');" ' +
1586				'onclick="DP_jQuery_' + dpuuid + '.datepicker._clickMonthYear(\'#' + inst.id + '\');"' +
1587				'>';
1588			for (; year <= endYear; year++) {
1589				inst.yearshtml += '<option value="' + year + '"' +
1590					(year == drawYear ? ' selected="selected"' : '') +
1591					'>' + year + '</option>';
1592			}
1593			inst.yearshtml += '</select>';
1594			//when showing there is no need for later update
1595			if( ! $.browser.mozilla ){
1596				html += inst.yearshtml;
1597				inst.yearshtml = null;
1598			} else {
1599				// will be replaced later with inst.yearshtml
1600				html += '<select class="ui-datepicker-year"><option value="' + drawYear + '" selected="selected">' + drawYear + '</option></select>';
1601			}
1602		}
1603		html += this._get(inst, 'yearSuffix');
1604		if (showMonthAfterYear)
1605			html += (secondary || !(changeMonth && changeYear) ? '&#xa0;' : '') + monthHtml;
1606		html += '</div>'; // Close datepicker_header
1607		return html;
1608	},
1609
1610	/* Adjust one of the date sub-fields. */
1611	_adjustInstDate: function(inst, offset, period) {
1612		var year = inst.drawYear + (period == 'Y' ? offset : 0);
1613		var month = inst.drawMonth + (period == 'M' ? offset : 0);
1614		var day = Math.min(inst.selectedDay, this._getDaysInMonth(year, month)) +
1615			(period == 'D' ? offset : 0);
1616		var date = this._restrictMinMax(inst,
1617			this._daylightSavingAdjust(new Date(year, month, day)));
1618		inst.selectedDay = date.getDate();
1619		inst.drawMonth = inst.selectedMonth = date.getMonth();
1620		inst.drawYear = inst.selectedYear = date.getFullYear();
1621		if (period == 'M' || period == 'Y')
1622			this._notifyChange(inst);
1623	},
1624
1625	/* Ensure a date is within any min/max bounds. */
1626	_restrictMinMax: function(inst, date) {
1627		var minDate = this._getMinMaxDate(inst, 'min');
1628		var maxDate = this._getMinMaxDate(inst, 'max');
1629		var newDate = (minDate && date < minDate ? minDate : date);
1630		newDate = (maxDate && newDate > maxDate ? maxDate : newDate);
1631		return newDate;
1632	},
1633
1634	/* Notify change of month/year. */
1635	_notifyChange: function(inst) {
1636		var onChange = this._get(inst, 'onChangeMonthYear');
1637		if (onChange)
1638			onChange.apply((inst.input ? inst.input[0] : null),
1639				[inst.selectedYear, inst.selectedMonth + 1, inst]);
1640	},
1641
1642	/* Determine the number of months to show. */
1643	_getNumberOfMonths: function(inst) {
1644		var numMonths = this._get(inst, 'numberOfMonths');
1645		return (numMonths == null ? [1, 1] : (typeof numMonths == 'number' ? [1, numMonths] : numMonths));
1646	},
1647
1648	/* Determine the current maximum date - ensure no time components are set. */
1649	_getMinMaxDate: function(inst, minMax) {
1650		return this._determineDate(inst, this._get(inst, minMax + 'Date'), null);
1651	},
1652
1653	/* Find the number of days in a given month. */
1654	_getDaysInMonth: function(year, month) {
1655		return 32 - new Date(year, month, 32).getDate();
1656	},
1657
1658	/* Find the day of the week of the first of a month. */
1659	_getFirstDayOfMonth: function(year, month) {
1660		return new Date(year, month, 1).getDay();
1661	},
1662
1663	/* Determines if we should allow a "next/prev" month display change. */
1664	_canAdjustMonth: function(inst, offset, curYear, curMonth) {
1665		var numMonths = this._getNumberOfMonths(inst);
1666		var date = this._daylightSavingAdjust(new Date(curYear,
1667			curMonth + (offset < 0 ? offset : numMonths[0] * numMonths[1]), 1));
1668		if (offset < 0)
1669			date.setDate(this._getDaysInMonth(date.getFullYear(), date.getMonth()));
1670		return this._isInRange(inst, date);
1671	},
1672
1673	/* Is the given date in the accepted range? */
1674	_isInRange: function(inst, date) {
1675		var minDate = this._getMinMaxDate(inst, 'min');
1676		var maxDate = this._getMinMaxDate(inst, 'max');
1677		return ((!minDate || date.getTime() >= minDate.getTime()) &&
1678			(!maxDate || date.getTime() <= maxDate.getTime()));
1679	},
1680
1681	/* Provide the configuration settings for formatting/parsing. */
1682	_getFormatConfig: function(inst) {
1683		var shortYearCutoff = this._get(inst, 'shortYearCutoff');
1684		shortYearCutoff = (typeof shortYearCutoff != 'string' ? shortYearCutoff :
1685			new Date().getFullYear() % 100 + parseInt(shortYearCutoff, 10));
1686		return {shortYearCutoff: shortYearCutoff,
1687			dayNamesShort: this._get(inst, 'dayNamesShort'), dayNames: this._get(inst, 'dayNames'),
1688			monthNamesShort: this._get(inst, 'monthNamesShort'), monthNames: this._get(inst, 'monthNames')};
1689	},
1690
1691	/* Format the given date for display. */
1692	_formatDate: function(inst, day, month, year) {
1693		if (!day) {
1694			inst.currentDay = inst.selectedDay;
1695			inst.currentMonth = inst.selectedMonth;
1696			inst.currentYear = inst.selectedYear;
1697		}
1698		var date = (day ? (typeof day == 'object' ? day :
1699			this._daylightSavingAdjust(new Date(year, month, day))) :
1700			this._daylightSavingAdjust(new Date(inst.currentYear, inst.currentMonth, inst.currentDay)));
1701		return this.formatDate(this._get(inst, 'dateFormat'), date, this._getFormatConfig(inst));
1702	}
1703});
1704
1705/* jQuery extend now ignores nulls! */
1706function extendRemove(target, props) {
1707	$.extend(target, props);
1708	for (var name in props)
1709		if (props[name] == null || props[name] == undefined)
1710			target[name] = props[name];
1711	return target;
1712};
1713
1714/* Determine whether an object is an array. */
1715function isArray(a) {
1716	return (a && (($.browser.safari && typeof a == 'object' && a.length) ||
1717		(a.constructor && a.constructor.toString().match(/\Array\(\)/))));
1718};
1719
1720/* Invoke the datepicker functionality.
1721   @param  options  string - a command, optionally followed by additional parameters or
1722                    Object - settings for attaching new datepicker functionality
1723   @return  jQuery object */
1724$.fn.datepicker = function(options){
1725
1726	/* Initialise the date picker. */
1727	if (!$.datepicker.initialized) {
1728		$(document).mousedown($.datepicker._checkExternalClick).
1729			find('body').append($.datepicker.dpDiv);
1730		$.datepicker.initialized = true;
1731	}
1732
1733	var otherArgs = Array.prototype.slice.call(arguments, 1);
1734	if (typeof options == 'string' && (options == 'isDisabled' || options == 'getDate' || options == 'widget'))
1735		return $.datepicker['_' + options + 'Datepicker'].
1736			apply($.datepicker, [this[0]].concat(otherArgs));
1737	if (options == 'option' && arguments.length == 2 && typeof arguments[1] == 'string')
1738		return $.datepicker['_' + options + 'Datepicker'].
1739			apply($.datepicker, [this[0]].concat(otherArgs));
1740	return this.each(function() {
1741		typeof options == 'string' ?
1742			$.datepicker['_' + options + 'Datepicker'].
1743				apply($.datepicker, [this].concat(otherArgs)) :
1744			$.datepicker._attachDatepicker(this, options);
1745	});
1746};
1747
1748$.datepicker = new Datepicker(); // singleton instance
1749$.datepicker.initialized = false;
1750$.datepicker.uuid = new Date().getTime();
1751$.datepicker.version = "1.8.7";
1752
1753// Workaround for #4055
1754// Add another global to avoid noConflict issues with inline event handlers
1755window['DP_jQuery_' + dpuuid] = $;
1756
1757})(jQuery);

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