http://www.rhodes.ws/siteimages/jquery-cal/ui/ui.datepicker.js

1/*
2 * jQuery UI Datepicker 1.7.1
3 *
4 * Copyright (c) 2009 AUTHORS.txt (http://jqueryui.com/about)
5 * Dual licensed under the MIT (MIT-LICENSE.txt)
6 * and GPL (GPL-LICENSE.txt) licenses.
7 *
8 * http://docs.jquery.com/UI/Datepicker
9 *
10 * Depends:
11 *	ui.core.js
12 */
13
14(function($) { // hide the namespace
15
16$.extend($.ui, { datepicker: { version: "1.7.1" } });
17
18var PROP_NAME = 'datepicker';
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		dateFormat: 'mm/dd/yy', // See format options on parseDate
54		firstDay: 0, // The first day of the week, Sun = 0, Mon = 1, ...
55		isRTL: false // True if right-to-left language, false if left-to-right
56	};
57	this._defaults = { // Global defaults for all the date picker instances
58		showOn: 'focus', // 'focus' for popup on focus,
59			// 'button' for trigger button, or 'both' for either
60		showAnim: 'show', // Name of jQuery animation for popup
61		showOptions: {}, // Options for enhanced animations
62		defaultDate: null, // Used when field is blank: actual date,
63			// +/-number for offset from today, null for today
64		appendText: '', // Display text following the input box, e.g. showing the format
65		buttonText: '...', // Text for trigger button
66		buttonImage: '', // URL for trigger button image
67		buttonImageOnly: false, // True if the image appears alone, false if it appears on a button
68		hideIfNoPrevNext: false, // True to hide next/previous month links
69			// if not applicable, false to just disable them
70		navigationAsDateFormat: false, // True if date formatting applied to prev/today/next links
71		gotoCurrent: false, // True if today link goes back to current selection instead
72		changeMonth: false, // True if month can be selected directly, false if only prev/next
73		changeYear: false, // True if year can be selected directly, false if only prev/next
74		showMonthAfterYear: false, // True if the year select precedes month, false for month then year
75		yearRange: '-10:+10', // Range of years to display in drop-down,
76			// either relative to current year (-nn:+nn) or absolute (nnnn:nnnn)

77		showOtherMonths: false, // True to show dates in other months, false to leave blank
78		calculateWeek: this.iso8601Week, // How to calculate the week of the year,
79			// takes a Date and returns the number of the week for it
80		shortYearCutoff: '+10', // Short year values < this are in the current century,
81			// > this are in the previous century,
82			// string value starting with '+' for current year + value
83		minDate: null, // The earliest selectable date, or null for no limit
84		maxDate: null, // The latest selectable date, or null for no limit
85		duration: 'normal', // Duration of display/closure
86		beforeShowDay: null, // Function that takes a date and returns an array with
87			// [0] = true if selectable, false if not, [1] = custom CSS class name(s) or '',
88			// [2] = cell title (optional), e.g. $.datepicker.noWeekends
89		beforeShow: null, // Function that takes an input field and
90			// returns a set of custom settings for the date picker
91		onSelect: null, // Define a callback function when a date is selected
92		onChangeMonthYear: null, // Define a callback function when the month or year is changed
93		onClose: null, // Define a callback function when the datepicker is closed
94		numberOfMonths: 1, // Number of months to show at a time
95		showCurrentAtPos: 0, // The position in multipe months at which to show the current month (starting at 0)
96		stepMonths: 1, // Number of months to step back/forward
97		stepBigMonths: 12, // Number of months to step back/forward for the big links
98		altField: '', // Selector for an alternate field to store selected dates into
99		altFormat: '', // The date format to use for the alternate field
100		constrainInput: true, // The input is constrained by the current date format
101		showButtonPanel: false // True to show button panel, false to not show it
102	};
103	$.extend(this._defaults, this.regional['']);
104	this.dpDiv = $('<div id="' + this._mainDivId + '" class="ui-datepicker ui-widget ui-widget-content ui-helper-clearfix ui-corner-all ui-helper-hidden-accessible"></div>');
105}
106
107$.extend(Datepicker.prototype, {
108	/* Class name added to elements to indicate already configured with a date picker. */
109	markerClassName: 'hasDatepicker',
110
111	/* Debug logging (if enabled). */
112	log: function () {
113		if (this.debug)
114			console.log.apply('', arguments);
115	},
116
117	/* Override the default settings for all instances of the date picker.
118	   @param  settings  object - the new settings to use as defaults (anonymous object)
119	   @return the manager object */
120	setDefaults: function(settings) {
121		extendRemove(this._defaults, settings || {});
122		return this;
123	},
124
125	/* Attach the date picker to a jQuery selection.
126	   @param  target    element - the target input field or division or span
127	   @param  settings  object - the new settings to use for this date picker instance (anonymous) */
128	_attachDatepicker: function(target, settings) {
129		// check for settings on the control itself - in namespace 'date:'
130		var inlineSettings = null;
131		for (var attrName in this._defaults) {
132			var attrValue = target.getAttribute('date:' + attrName);
133			if (attrValue) {
134				inlineSettings = inlineSettings || {};
135				try {
136					inlineSettings[attrName] = eval(attrValue);
137				} catch (err) {
138					inlineSettings[attrName] = attrValue;
139				}
140			}
141		}
142		var nodeName = target.nodeName.toLowerCase();
143		var inline = (nodeName == 'div' || nodeName == 'span');
144		if (!target.id)
145			target.id = 'dp' + (++this.uuid);
146		var inst = this._newInst($(target), inline);
147		inst.settings = $.extend({}, settings || {}, inlineSettings || {});
148		if (nodeName == 'input') {
149			this._connectDatepicker(target, inst);
150		} else if (inline) {
151			this._inlineDatepicker(target, inst);
152		}
153	},
154
155	/* Create a new instance object. */
156	_newInst: function(target, inline) {
157		var id = target[0].id.replace(/([:\[\]\.])/g, '\\\\$1'); // escape jQuery meta chars
158		return {id: id, input: target, // associated target
159			selectedDay: 0, selectedMonth: 0, selectedYear: 0, // current selection
160			drawMonth: 0, drawYear: 0, // month being drawn
161			inline: inline, // is datepicker inline or not
162			dpDiv: (!inline ? this.dpDiv : // presentation div
163			$('<div class="' + this._inlineClass + ' ui-datepicker ui-widget ui-widget-content ui-helper-clearfix ui-corner-all"></div>'))};
164	},
165
166	/* Attach the date picker to an input field. */
167	_connectDatepicker: function(target, inst) {
168		var input = $(target);
169		inst.trigger = $([]);
170		if (input.hasClass(this.markerClassName))
171			return;
172		var appendText = this._get(inst, 'appendText');
173		var isRTL = this._get(inst, 'isRTL');
174		if (appendText)

175			input[isRTL ? 'before' : 'after']('<span class="' + this._appendClass + '">' + appendText + '</span>');
176		var showOn = this._get(inst, 'showOn');
177		if (showOn == 'focus' || showOn == 'both') // pop-up date picker when in the marked field
178			input.focus(this._showDatepicker);
179		if (showOn == 'button' || showOn == 'both') { // pop-up date picker when button clicked
180			var buttonText = this._get(inst, 'buttonText');
181			var buttonImage = this._get(inst, 'buttonImage');
182			inst.trigger = $(this._get(inst, 'buttonImageOnly') ?
183				$('<img/>').addClass(this._triggerClass).
184					attr({ src: buttonImage, alt: buttonText, title: buttonText }) :
185				$('<button type="button"></button>').addClass(this._triggerClass).
186					html(buttonImage == '' ? buttonText : $('<img/>').attr(
187					{ src:buttonImage, alt:buttonText, title:buttonText })));
188			input[isRTL ? 'before' : 'after'](inst.trigger);
189			inst.trigger.click(function() {
190				if ($.datepicker._datepickerShowing && $.datepicker._lastInput == target)
191					$.datepicker._hideDatepicker();
192				else
193					$.datepicker._showDatepicker(target);
194				return false;
195			});
196		}
197		input.addClass(this.markerClassName).keydown(this._doKeyDown).keypress(this._doKeyPress).
198			bind("setData.datepicker", function(event, key, value) {
199				inst.settings[key] = value;
200			}).bind("getData.datepicker", function(event, key) {
201				return this._get(inst, key);
202			});
203		$.data(target, PROP_NAME, inst);
204	},
205
206	/* Attach an inline date picker to a div. */
207	_inlineDatepicker: function(target, inst) {
208		var divSpan = $(target);
209		if (divSpan.hasClass(this.markerClassName))
210			return;
211		divSpan.addClass(this.markerClassName).append(inst.dpDiv).
212			bind("setData.datepicker", function(event, key, value){
213				inst.settings[key] = value;
214			}).bind("getData.datepicker", function(event, key){
215				return this._get(inst, key);
216			});
217		$.data(target, PROP_NAME, inst);
218		this._setDate(inst, this._getDefaultDate(inst));
219		this._updateDatepicker(inst);
220		this._updateAlternate(inst);
221	},
222
223	/* Pop-up the date picker in a "dialog" box.
224	   @param  input     element - ignored
225	   @param  dateText  string - the initial date to display (in the current format)
226	   @param  onSelect  function - the function(dateText) to call when a date is selected
227	   @param  settings  object - update the dialog date picker instance's settings (anonymous object)
228	   @param  pos       int[2] - coordinates for the dialog's position within the screen or
229	                     event - with x/y coordinates or
230	                     leave empty for default (screen centre)
231	   @return the manager object */
232	_dialogDatepicker: function(input, dateText, onSelect, settings, pos) {
233		var inst = this._dialogInst; // internal instance
234		if (!inst) {
235			var id = 'dp' + (++this.uuid);
236			this._dialogInput = $('<input type="text" id="' + id +
237				'" size="1" style="position: absolute; top: -100px;"/>');
238			this._dialogInput.keydown(this._doKeyDown);
239			$('body').append(this._dialogInput);
240			inst = this._dialogInst = this._newInst(this._dialogInput, false);
241			inst.settings = {};
242			$.data(this._dialogInput[0], PROP_NAME, inst);
243		}
244		extendRemove(inst.settings, settings || {});
245		this._dialogInput.val(dateText);
246
247		this._pos = (pos ? (pos.length ? pos : [pos.pageX, pos.pageY]) : null);
248		if (!this._pos) {
249			var browserWidth = window.innerWidth || document.documentElement.clientWidth ||	document.body.clientWidth;
250			var browserHeight = window.innerHeight || document.documentElement.clientHeight || document.body.clientHeight;
251			var scrollX = document.documentElement.scrollLeft || document.body.scrollLeft;
252			var scrollY = document.documentElement.scrollTop || document.body.scrollTop;
253			this._pos = // should use actual width/height below
254				[(browserWidth / 2) - 100 + scrollX, (browserHeight / 2) - 150 + scrollY];
255		}
256
257		// move input on screen for focus, but hidden behind dialog
258		this._dialogInput.css('left', this._pos[0] + 'px').css('top', this._pos[1] + 'px');
259		inst.settings.onSelect = onSelect;
260		this._inDialog = true;
261		this.dpDiv.addClass(this._dialogClass);
262		this._showDatepicker(this._dialogInput[0]);
263		if ($.blockUI)
264			$.blockUI(this.dpDiv);
265		$.data(this._dialogInput[0], PROP_NAME, inst);
266		return this;
267	},
268
269	/* Detach a datepicker from its control.
270	   @param  target    element - the target input field or division or span */
271	_destroyDatepicker: function(target) {
272		var $target = $(target);
273		var inst = $.data(target, PROP_NAME);
274		if (!$target.hasClass(this.markerClassName)) {
275			return;
276		}
277		var nodeName = target.nodeName.toLowerCase();
278		$.removeData(target, PROP_NAME);
279		if (nodeName == 'input') {
280			inst.trigger.remove();
281			$target.siblings('.' + this._appendClass).remove().end().
282				removeClass(this.markerClassName).
283				unbind('focus', this._showDatepicker).
284				unbind('keydown', this._doKeyDown).
285				unbind('keypress', this._doKeyPress);
286		} else if (nodeName == 'div' || nodeName == 'span')
287			$target.removeClass(this.markerClassName).empty();
288	},
289
290	/* Enable the date picker to a jQuery selection.
291	   @param  target    element - the target input field or division or span */
292	_enableDatepicker: function(target) {
293		var $target = $(target);
294		var inst = $.data(target, PROP_NAME);
295		if (!$target.hasClass(this.markerClassName)) {
296			return;
297		}
298		var nodeName = target.nodeName.toLowerCase();
299		if (nodeName == 'input') {
300		target.disabled = false;

301			inst.trigger.filter("button").
302			each(function() { this.disabled = false; }).end().
303				filter("img").
304				css({opacity: '1.0', cursor: ''});
305		}
306		else if (nodeName == 'div' || nodeName == 'span') {
307			var inline = $target.children('.' + this._inlineClass);
308			inline.children().removeClass('ui-state-disabled');
309		}
310		this._disabledInputs = $.map(this._disabledInputs,
311			function(value) { return (value == target ? null : value); }); // delete entry
312	},
313
314	/* Disable the date picker to a jQuery selection.
315	   @param  target    element - the target input field or division or span */
316	_disableDatepicker: function(target) {
317		var $target = $(target);
318		var inst = $.data(target, PROP_NAME);
319		if (!$target.hasClass(this.markerClassName)) {
320			return;
321		}
322		var nodeName = target.nodeName.toLowerCase();
323		if (nodeName == 'input') {
324		target.disabled = true;
325			inst.trigger.filter("button").
326			each(function() { this.disabled = true; }).end().
327				filter("img").
328				css({opacity: '0.5', cursor: 'default'});
329		}
330		else if (nodeName == 'div' || nodeName == 'span') {
331			var inline = $target.children('.' + this._inlineClass);
332			inline.children().addClass('ui-state-disabled');
333		}
334		this._disabledInputs = $.map(this._disabledInputs,
335			function(value) { return (value == target ? null : value); }); // delete entry
336		this._disabledInputs[this._disabledInputs.length] = target;
337	},
338
339	/* Is the first field in a jQuery collection disabled as a datepicker?
340	   @param  target    element - the target input field or division or span
341	   @return boolean - true if disabled, false if enabled */
342	_isDisabledDatepicker: function(target) {
343		if (!target) {
344			return false;
345		}
346		for (var i = 0; i < this._disabledInputs.length; i++) {
347			if (this._disabledInputs[i] == target)
348				return true;
349		}
350		return false;
351	},
352
353	/* Retrieve the instance data for the target control.
354	   @param  target  element - the target input field or division or span
355	   @return  object - the associated instance data
356	   @throws  error if a jQuery problem getting data */
357	_getInst: function(target) {
358		try {
359			return $.data(target, PROP_NAME);
360		}
361		catch (err) {
362			throw 'Missing instance data for this datepicker';
363		}
364	},
365
366	/* Update the settings for a date picker attached to an input field or division.
367	   @param  target  element - the target input field or division or span
368	   @param  name    object - the new settings to update or
369	                   string - the name of the setting to change or
370	   @param  value   any - the new value for the setting (omit if above is an object) */
371	_optionDatepicker: function(target, name, value) {
372		var settings = name || {};
373		if (typeof name == 'string') {
374			settings = {};
375			settings[name] = value;
376		}
377		var inst = this._getInst(target);
378		if (inst) {
379			if (this._curInst == inst) {
380				this._hideDatepicker(null);
381			}
382			extendRemove(inst.settings, settings);
383			var date = new Date();
384			extendRemove(inst, {rangeStart: null, // start of range
385				endDay: null, endMonth: null, endYear: null, // end of range
386				selectedDay: date.getDate(), selectedMonth: date.getMonth(),
387				selectedYear: date.getFullYear(), // starting point
388				currentDay: date.getDate(), currentMonth: date.getMonth(),
389				currentYear: date.getFullYear(), // current selection
390				drawMonth: date.getMonth(), drawYear: date.getFullYear()}); // month being drawn
391			this._updateDatepicker(inst);
392		}
393	},
394
395	// change method deprecated
396	_changeDatepicker: function(target, name, value) {
397		this._optionDatepicker(target, name, value);
398	},
399
400	/* Redraw the date picker attached to an input field or division.
401	   @param  target  element - the target input field or division or span */
402	_refreshDatepicker: function(target) {
403		var inst = this._getInst(target);
404		if (inst) {
405			this._updateDatepicker(inst);
406		}
407	},
408
409	/* Set the dates for a jQuery selection.
410	   @param  target   element - the target input field or division or span
411	   @param  date     Date - the new date
412	   @param  endDate  Date - the new end date for a range (optional) */
413	_setDateDatepicker: function(target, date, endDate) {
414		var inst = this._getInst(target);
415		if (inst) {
416			this._setDate(inst, date, endDate);
417			this._updateDatepicker(inst);
418			this._updateAlternate(inst);
419		}
420	},
421
422	/* Get the date(s) for the first entry in a jQuery selection.
423	   @param  target  element - the target input field or division or span
424	   @return Date - the current date or
425	           Date[2] - the current dates for a range */
426	_getDateDatepicker: function(target) {
427		var inst = this._getInst(target);
428		if (inst && !inst.inline)
429			this._setDateFromField(inst);
430		return (inst ? this._getDate(inst) : null);
431	},
432
433	/* Handle keystrokes. */
434	_doKeyDown: function(event) {
435		var inst = $.datepicker._getInst(event.target);
436		var handled = true;
437		var isRTL = inst.dpDiv.is('.ui-datepicker-rtl');
438		inst._keyEvent = true;
439		if ($.datepicker._datepickerShowing)
440			switch (event.keyCode) {
441				case 9:  $.datepicker._hideDatepicker(null, '');
442						break; // hide on tab out
443				case 13: var sel = $('td.' + $.datepicker._dayOverClass +
444							', td.' + $.datepicker._currentClass, inst.dpDiv);
445						if (sel[0])
446							$.datepicker._selectDay(event.target, inst.selectedMonth, inst.selectedYear, sel[0]);
447						else
448							$.datepicker._hideDatepicker(null, $.datepicker._get(inst, 'duration'));
449						return false; // don't submit the form
450						break; // select the value on enter
451				case 27: $.datepicker._hideDatepicker(null, $.datepicker._get(inst, 'duration'));
452						break; // hide on escape
453				case 33: $.datepicker._adjustDate(event.target, (event.ctrlKey ?
454							-$.datepicker._get(inst, 'stepBigMonths') :
455							-$.datepicker._get(inst, 'stepMonths')), 'M');
456						break; // previous month/year on page up/+ ctrl
457				case 34: $.datepicker._adjustDate(event.target, (event.ctrlKey ?
458							+$.datepicker._get(inst, 'stepBigMonths') :
459							+$.datepicker._get(inst, 'stepMonths')), 'M');
460						break; // next month/year on page down/+ ctrl
461				case 35: if (event.ctrlKey || event.metaKey) $.datepicker._clearDate(event.target);
462						handled = event.ctrlKey || event.metaKey;
463						break; // clear on ctrl or command +end
464				case 36: if (event.ctrlKey || event.metaKey) $.datepicker._gotoToday(event.target);
465						handled = event.ctrlKey || event.metaKey;
466						break; // current on ctrl or command +home
467				case 37: if (event.ctrlKey || event.metaKey) $.datepicker._adjustDate(event.target, (isRTL ? +1 : -1), 'D');
468						handled = event.ctrlKey || event.metaKey;
469						// -1 day on ctrl or command +left
470						if (event.originalEvent.altKey) $.datepicker._adjustDate(event.target, (event.ctrlKey ?
471									-$.datepicker._get(inst, 'stepBigMonths') :
472									-$.datepicker._get(inst, 'stepMonths')), 'M');
473						// next month/year on alt +left on Mac
474						break;
475				case 38: if (event.ctrlKey || event.metaKey) $.datepicker._adjustDate(event.target, -7, 'D');
476						handled = event.ctrlKey || event.metaKey;
477						break; // -1 week on ctrl or command +up
478				case 39: if (event.ctrlKey || event.metaKey) $.datepicker._adjustDate(event.target, (isRTL ? -1 : +1), 'D');
479						handled = event.ctrlKey || event.metaKey;
480						// +1 day on ctrl or command +right
481						if (event.originalEvent.altKey) $.datepicker._adjustDate(event.target, (event.ctrlKey ?
482									+$.datepicker._get(inst, 'stepBigMonths') :
483									+$.datepicker._get(inst, 'stepMonths')), 'M');
484						// next month/year on alt +right
485						break;
486				case 40: if (event.ctrlKey || event.metaKey) $.datepicker._adjustDate(event.target, +7, 'D');
487						handled = event.ctrlKey || event.metaKey;
488						break; // +1 week on ctrl or command +down
489				default: handled = false;

490			}
491		else if (event.keyCode == 36 && event.ctrlKey) // display the date picker on ctrl+home
492			$.datepicker._showDatepicker(this);
493		else {
494			handled = false;
495		}
496		if (handled) {
497			event.preventDefault();
498			event.stopPropagation();
499		}
500	},
501
502	/* Filter entered characters - based on date format. */
503	_doKeyPress: function(event) {
504		var inst = $.datepicker._getInst(event.target);
505		if ($.datepicker._get(inst, 'constrainInput')) {
506			var chars = $.datepicker._possibleChars($.datepicker._get(inst, 'dateFormat'));
507			var chr = String.fromCharCode(event.charCode == undefined ? event.keyCode : event.charCode);
508			return event.ctrlKey || (chr < ' ' || !chars || chars.indexOf(chr) > -1);
509		}
510	},
511
512	/* Pop-up the date picker for a given input field.
513	   @param  input  element - the input field attached to the date picker or
514	                  event - if triggered by focus */
515	_showDatepicker: function(input) {
516		input = input.target || input;
517		if (input.nodeName.toLowerCase() != 'input') // find from button/image trigger
518			input = $('input', input.parentNode)[0];
519		if ($.datepicker._isDisabledDatepicker(input) || $.datepicker._lastInput == input) // already here
520			return;
521		var inst = $.datepicker._getInst(input);
522		var beforeShow = $.datepicker._get(inst, 'beforeShow');
523		extendRemove(inst.settings, (beforeShow ? beforeShow.apply(input, [input, inst]) : {}));
524		$.datepicker._hideDatepicker(null, '');
525		$.datepicker._lastInput = input;
526		$.datepicker._setDateFromField(inst);
527		if ($.datepicker._inDialog) // hide cursor
528			input.value = '';
529		if (!$.datepicker._pos) { // position below input
530			$.datepicker._pos = $.datepicker._findPos(input);
531			$.datepicker._pos[1] += input.offsetHeight; // add the height
532		}
533		var isFixed = false;
534		$(input).parents().each(function() {
535			isFixed |= $(this).css('position') == 'fixed';
536			return !isFixed;
537		});
538		if (isFixed && $.browser.opera) { // correction for Opera when fixed and scrolled
539			$.datepicker._pos[0] -= document.documentElement.scrollLeft;
540			$.datepicker._pos[1] -= document.documentElement.scrollTop;
541		}
542		var offset = {left: $.datepicker._pos[0], top: $.datepicker._pos[1]};
543		$.datepicker._pos = null;
544		inst.rangeStart = null;
545		// determine sizing offscreen
546		inst.dpDiv.css({position: 'absolute', display: 'block', top: '-1000px'});
547		$.datepicker._updateDatepicker(inst);
548		// fix width for dynamic number of date pickers
549		// and adjust position before showing
550		offset = $.datepicker._checkOffset(inst, offset, isFixed);
551		inst.dpDiv.css({position: ($.datepicker._inDialog && $.blockUI ?
552			'static' : (isFixed ? 'fixed' : 'absolute')), display: 'none',
553			left: offset.left + 'px', top: offset.top + 'px'});
554		if (!inst.inline) {
555			var showAnim = $.datepicker._get(inst, 'showAnim') || 'show';
556			var duration = $.datepicker._get(inst, 'duration');
557			var postProcess = function() {
558				$.datepicker._datepickerShowing = true;
559				if ($.browser.msie && parseInt($.browser.version,10) < 7) // fix IE < 7 select problems
560					$('iframe.ui-datepicker-cover').css({width: inst.dpDiv.width() + 4,
561						height: inst.dpDiv.height() + 4});
562			};
563			if ($.effects && $.effects[showAnim])
564				inst.dpDiv.show(showAnim, $.datepicker._get(inst, 'showOptions'), duration, postProcess);
565			else
566				inst.dpDiv[showAnim](duration, postProcess);
567			if (duration == '')
568				postProcess();
569			if (inst.input[0].type != 'hidden')
570				inst.input[0].focus();
571			$.datepicker._curInst = inst;
572		}
573	},
574
575	/* Generate the date picker content. */
576	_updateDatepicker: function(inst) {
577		var dims = {width: inst.dpDiv.width() + 4,
578			height: inst.dpDiv.height() + 4};
579		var self = this;
580		inst.dpDiv.empty().append(this._generateHTML(inst))
581			.find('iframe.ui-datepicker-cover').
582				css({width: dims.width, height: dims.height})
583			.end()
584			.find('button, .ui-datepicker-prev, .ui-datepicker-next, .ui-datepicker-calendar td a')
585				.bind('mouseout', function(){
586					$(this).removeClass('ui-state-hover');
587					if(this.className.indexOf('ui-datepicker-prev') != -1) $(this).removeClass('ui-datepicker-prev-hover');
588					if(this.className.indexOf('ui-datepicker-next') != -1) $(this).removeClass('ui-datepicker-next-hover');
589				})
590				.bind('mouseover', function(){
591					if (!self._isDisabledDatepicker( inst.inline ? inst.dpDiv.parent()[0] : inst.input[0])) {
592						$(this).parents('.ui-datepicker-calendar').find('a').removeClass('ui-state-hover');
593						$(this).addClass('ui-state-hover');
594						if(this.className.indexOf('ui-datepicker-prev') != -1) $(this).addClass('ui-datepicker-prev-hover');
595						if(this.className.indexOf('ui-datepicker-next') != -1) $(this).addClass('ui-datepicker-next-hover');
596					}
597				})
598			.end()
599			.find('.' + this._dayOverClass + ' a')
600				.trigger('mouseover')
601			.end();
602		var numMonths = this._getNumberOfMonths(inst);
603		var cols = numMonths[1];
604		var width = 17;
605		if (cols > 1) {
606			inst.dpDiv.addClass('ui-datepicker-multi-' + cols).css('width', (width * cols) + 'em');
607		} else {
608			inst.dpDiv.removeClass('ui-datepicker-multi-2 ui-datepicker-multi-3 ui-datepicker-multi-4').width('');
609		}
610		inst.dpDiv[(numMonths[0] != 1 || numMonths[1] != 1 ? 'add' : 'remove') +
611			'Class']('ui-datepicker-multi');
612		inst.dpDiv[(this._get(inst, 'isRTL') ? 'add' : 'remove') +
613			'Class']('ui-datepicker-rtl');
614		if (inst.input && inst.input[0].type != 'hidden' && inst == $.datepicker._curInst)
615			$(inst.input[0]).focus();
616	},
617
618	/* Check positioning to remain on screen. */
619	_checkOffset: function(inst, offset, isFixed) {
620		var dpWidth = inst.dpDiv.outerWidth();
621		var dpHeight = inst.dpDiv.outerHeight();

622		var inputWidth = inst.input ? inst.input.outerWidth() : 0;
623		var inputHeight = inst.input ? inst.input.outerHeight() : 0;
624		var viewWidth = (window.innerWidth || document.documentElement.clientWidth || document.body.clientWidth) + $(document).scrollLeft();
625		var viewHeight = (window.innerHeight || document.documentElement.clientHeight || document.body.clientHeight) + $(document).scrollTop();
626
627		offset.left -= (this._get(inst, 'isRTL') ? (dpWidth - inputWidth) : 0);
628		offset.left -= (isFixed && offset.left == inst.input.offset().left) ? $(document).scrollLeft() : 0;
629		offset.top -= (isFixed && offset.top == (inst.input.offset().top + inputHeight)) ? $(document).scrollTop() : 0;
630
631		// now check if datepicker is showing outside window viewport - move to a better place if so.
632		offset.left -= (offset.left + dpWidth > viewWidth && viewWidth > dpWidth) ? Math.abs(offset.left + dpWidth - viewWidth) : 0;
633		offset.top -= (offset.top + dpHeight > viewHeight && viewHeight > dpHeight) ? Math.abs(offset.top + dpHeight + inputHeight*2 - viewHeight) : 0;
634
635		return offset;
636	},
637
638	/* Find an object's position on the screen. */
639	_findPos: function(obj) {
640        while (obj && (obj.type == 'hidden' || obj.nodeType != 1)) {
641            obj = obj.nextSibling;
642        }
643        var position = $(obj).offset();
644	    return [position.left, position.top];
645	},
646
647	/* Hide the date picker from view.
648	   @param  input  element - the input field attached to the date picker
649	   @param  duration  string - the duration over which to close the date picker */
650	_hideDatepicker: function(input, duration) {
651		var inst = this._curInst;
652		if (!inst || (input && inst != $.data(input, PROP_NAME)))
653			return;
654		if (inst.stayOpen)
655			this._selectDate('#' + inst.id, this._formatDate(inst,
656				inst.currentDay, inst.currentMonth, inst.currentYear));
657		inst.stayOpen = false;
658		if (this._datepickerShowing) {
659			duration = (duration != null ? duration : this._get(inst, 'duration'));
660			var showAnim = this._get(inst, 'showAnim');
661			var postProcess = function() {
662				$.datepicker._tidyDialog(inst);
663			};
664			if (duration != '' && $.effects && $.effects[showAnim])
665				inst.dpDiv.hide(showAnim, $.datepicker._get(inst, 'showOptions'),
666					duration, postProcess);
667			else
668				inst.dpDiv[(duration == '' ? 'hide' : (showAnim == 'slideDown' ? 'slideUp' :
669					(showAnim == 'fadeIn' ? 'fadeOut' : 'hide')))](duration, postProcess);
670			if (duration == '')
671				this._tidyDialog(inst);
672			var onClose = this._get(inst, 'onClose');
673			if (onClose)
674				onClose.apply((inst.input ? inst.input[0] : null),
675					[(inst.input ? inst.input.val() : ''), inst]);  // trigger custom callback
676			this._datepickerShowing = false;
677			this._lastInput = null;
678			if (this._inDialog) {
679				this._dialogInput.css({ position: 'absolute', left: '0', top: '-100px' });
680				if ($.blockUI) {
681					$.unblockUI();
682					$('body').append(this.dpDiv);
683				}
684			}
685			this._inDialog = false;
686		}
687		this._curInst = null;
688	},
689
690	/* Tidy up after a dialog display. */
691	_tidyDialog: function(inst) {
692		inst.dpDiv.removeClass(this._dialogClass).unbind('.ui-datepicker-calendar');
693	},
694
695	/* Close date picker if clicked elsewhere. */
696	_checkExternalClick: function(event) {
697		if (!$.datepicker._curInst)
698			return;
699		var $target = $(event.target);
700		if (($target.parents('#' + $.datepicker._mainDivId).length == 0) &&
701				!$target.hasClass($.datepicker.markerClassName) &&
702				!$target.hasClass($.datepicker._triggerClass) &&
703				$.datepicker._datepickerShowing && !($.datepicker._inDialog && $.blockUI))
704			$.datepicker._hideDatepicker(null, '');
705	},
706
707	/* Adjust one of the date sub-fields. */
708	_adjustDate: function(id, offset, period) {
709		var target = $(id);
710		var inst = this._getInst(target[0]);
711		if (this._isDisabledDatepicker(target[0])) {
712			return;
713		}
714		this._adjustInstDate(inst, offset +
715			(period == 'M' ? this._get(inst, 'showCurrentAtPos') : 0), // undo positioning
716			period);
717		this._updateDatepicker(inst);
718	},
719
720	/* Action for current link. */
721	_gotoToday: function(id) {
722		var target = $(id);
723		var inst = this._getInst(target[0]);
724		if (this._get(inst, 'gotoCurrent') && inst.currentDay) {
725			inst.selectedDay = inst.currentDay;
726			inst.drawMonth = inst.selectedMonth = inst.currentMonth;
727			inst.drawYear = inst.selectedYear = inst.currentYear;
728		}
729		else {
730		var date = new Date();
731		inst.selectedDay = date.getDate();
732		inst.drawMonth = inst.selectedMonth = date.getMonth();
733		inst.drawYear = inst.selectedYear = date.getFullYear();
734		}
735		this._notifyChange(inst);
736		this._adjustDate(target);
737	},
738
739	/* Action for selecting a new month/year. */

740	_selectMonthYear: function(id, select, period) {
741		var target = $(id);
742		var inst = this._getInst(target[0]);
743		inst._selectingMonthYear = false;
744		inst['selected' + (period == 'M' ? 'Month' : 'Year')] =
745		inst['draw' + (period == 'M' ? 'Month' : 'Year')] =
746			parseInt(select.options[select.selectedIndex].value,10);
747		this._notifyChange(inst);
748		this._adjustDate(target);
749	},
750
751	/* Restore input focus after not changing month/year. */
752	_clickMonthYear: function(id) {
753		var target = $(id);
754		var inst = this._getInst(target[0]);
755		if (inst.input && inst._selectingMonthYear && !$.browser.msie)
756			inst.input[0].focus();
757		inst._selectingMonthYear = !inst._selectingMonthYear;
758	},
759
760	/* Action for selecting a day. */
761	_selectDay: function(id, month, year, td) {
762		var target = $(id);
763		if ($(td).hasClass(this._unselectableClass) || this._isDisabledDatepicker(target[0])) {
764			return;
765		}
766		var inst = this._getInst(target[0]);
767		inst.selectedDay = inst.currentDay = $('a', td).html();
768		inst.selectedMonth = inst.currentMonth = month;
769		inst.selectedYear = inst.currentYear = year;
770		if (inst.stayOpen) {
771			inst.endDay = inst.endMonth = inst.endYear = null;
772		}
773		this._selectDate(id, this._formatDate(inst,
774			inst.currentDay, inst.currentMonth, inst.currentYear));
775		if (inst.stayOpen) {
776			inst.rangeStart = this._daylightSavingAdjust(
777				new Date(inst.currentYear, inst.currentMonth, inst.currentDay));
778			this._updateDatepicker(inst);
779		}
780	},
781
782	/* Erase the input field and hide the date picker. */
783	_clearDate: function(id) {
784		var target = $(id);
785		var inst = this._getInst(target[0]);
786		inst.stayOpen = false;
787		inst.endDay = inst.endMonth = inst.endYear = inst.rangeStart = null;
788		this._selectDate(target, '');
789	},
790
791	/* Update the input field with the selected date. */
792	_selectDate: function(id, dateStr) {
793		var target = $(id);
794		var inst = this._getInst(target[0]);
795		dateStr = (dateStr != null ? dateStr : this._formatDate(inst));
796		if (inst.input)
797			inst.input.val(dateStr);
798		this._updateAlternate(inst);
799		var onSelect = this._get(inst, 'onSelect');
800		if (onSelect)
801			onSelect.apply((inst.input ? inst.input[0] : null), [dateStr, inst]);  // trigger custom callback
802		else if (inst.input)
803			inst.input.trigger('change'); // fire the change event
804		if (inst.inline)
805			this._updateDatepicker(inst);
806		else if (!inst.stayOpen) {
807			this._hideDatepicker(null, this._get(inst, 'duration'));
808			this._lastInput = inst.input[0];
809			if (typeof(inst.input[0]) != 'object')
810				inst.input[0].focus(); // restore focus
811			this._lastInput = null;
812		}
813	},
814
815	/* Update any alternate field to synchronise with the main field. */
816	_updateAlternate: function(inst) {
817		var altField = this._get(inst, 'altField');
818		if (altField) { // update alternate field too
819			var altFormat = this._get(inst, 'altFormat') || this._get(inst, 'dateFormat');
820			var date = this._getDate(inst);
821			dateStr = this.formatDate(altFormat, date, this._getFormatConfig(inst));
822			$(altField).each(function() { $(this).val(dateStr); });
823		}
824	},
825
826	/* Set as beforeShowDay function to prevent selection of weekends.
827	   @param  date  Date - the date to customise
828	   @return [boolean, string] - is this date selectable?, what is its CSS class? */
829	noWeekends: function(date) {
830		var day = date.getDay();
831		return [(day > 0 && day < 6), ''];
832	},
833
834	/* Set as calculateWeek to determine the week of the year based on the ISO 8601 definition.
835	   @param  date  Date - the date to get the week for
836	   @return  number - the number of the week within the year that contains this date */
837	iso8601Week: function(date) {
838		var checkDate = new Date(date.getFullYear(), date.getMonth(), date.getDate());
839		var firstMon = new Date(checkDate.getFullYear(), 1 - 1, 4); // First week always contains 4 Jan
840		var firstDay = firstMon.getDay() || 7; // Day of week: Mon = 1, ..., Sun = 7
841		firstMon.setDate(firstMon.getDate() + 1 - firstDay); // Preceding Monday
842		if (firstDay < 4 && checkDate < firstMon) { // Adjust first three days in year if necessary
843			checkDate.setDate(checkDate.getDate() - 3); // Generate for previous year
844			return $.datepicker.iso8601Week(checkDate);
845		} else if (checkDate > new Date(checkDate.getFullYear(), 12 - 1, 28)) { // Check last three days in year
846			firstDay = new Date(checkDate.getFullYear() + 1, 1 - 1, 4).getDay() || 7;
847			if (firstDay >

847 4 && (checkDate.getDay() || 7) < firstDay - 3) { // Adjust if necessary
848				return 1;
849			}
850		}
851		return Math.floor(((checkDate - firstMon) / 86400000) / 7) + 1; // Weeks to given date
852	},
853
854	/* Parse a string value into a date object.
855	   See formatDate below for the possible formats.
856
857	   @param  format    string - the expected format of the date
858	   @param  value     string - the date in the above format
859	   @param  settings  Object - attributes include:
860	                     shortYearCutoff  number - the cutoff year for determining the century (optional)
861	                     dayNamesShort    string[7] - abbreviated names of the days from Sunday (optional)
862	                     dayNames         string[7] - names of the days from Sunday (optional)
863	                     monthNamesShort  string[12] - abbreviated names of the months (optional)
864	                     monthNames       string[12] - names of the months (optional)
865	   @return  Date - the extracted date value or null if value is blank */
866	parseDate: function (format, value, settings) {
867		if (format == null || value == null)
868			throw 'Invalid arguments';
869		value = (typeof value == 'object' ? value.toString() : value + '');
870		if (value == '')
871			return null;
872		var shortYearCutoff = (settings ? settings.shortYearCutoff : null) || this._defaults.shortYearCutoff;
873		var dayNamesShort = (settings ? settings.dayNamesShort : null) || this._defaults.dayNamesShort;
874		var dayNames = (settings ? settings.dayNames : null) || this._defaults.dayNames;
875		var monthNamesShort = (settings ? settings.monthNamesShort : null) || this._defaults.monthNamesShort;
876		var monthNames = (settings ? settings.monthNames : null) || this._defaults.monthNames;
877		var year = -1;
878		var month = -1;
879		var day = -1;
880		var doy = -1;
881		var literal = false;
882		// Check whether a format character is doubled
883		var lookAhead = function(match) {
884			var matches = (iFormat + 1 < format.length && format.charAt(iFormat + 1) == match);
885			if (matches)
886				iFormat++;
887			return matches;
888		};
889		// Extract a number from the string value
890		var getNumber = function(match) {
891			lookAhead(match);
892			var origSize = (match == '@' ? 14 : (match == 'y' ? 4 : (match == 'o' ? 3 : 2)));
893			var size = origSize;
894			var num = 0;
895			while (size > 0 && iValue < value.length &&
896					value.charAt(iValue) >= '0' && value.charAt(iValue) <= '9') {
897				num = num * 10 + parseInt(value.charAt(iValue++),10);
898				size--;
899			}
900			if (size == origSize)
901				throw 'Missing number at position ' + iValue;
902			return num;
903		};
904		// Extract a name from the string value and convert to an index
905		var getName = function(match, shortNames, longNames) {
906			var names = (lookAhead(match) ? longNames : shortNames);
907			var size = 0;
908			for (var j = 0; j < names.length; j++)
909				size = Math.max(size, names[j].length);
910			var name = '';
911			var iInit = iValue;
912			while (size > 0 && iValue < value.length) {
913				name += value.charAt(iValue++);
914				for (var i = 0; i < names.length; i++)
915					if (name == names[i])
916						return i + 1;
917				size--;
918			}
919			throw 'Unknown name at position ' + iInit;
920		};
921		// Confirm that a literal character matches the string value
922		var checkLiteral = function() {
923			if (value.charAt(iValue) != format.charAt(iFormat))
924				throw 'Unexpected literal at position ' + iValue;
925			iValue++;
926		};
927		var iValue = 0;
928		for (var iFormat = 0; iFormat < format.length; iFormat++) {
929			if (literal)
930				if (format.charAt(iFormat) == "'" && !lookAhead("'"))
931					literal = false;
932				else
933					checkLiteral();
934			else
935				switch (format.charAt(iFormat)) {
936					case 'd':
937						day = getNumber('d');
938						break;
939					case 'D':
940						getName('D', dayNamesShort, dayNames);
941						break;
942					case 'o':
943						doy = getNumber('o');
944						break;
945					case 'm':
946						month = getNumber('m');
947						break;
948					case 'M':
949						month = getName('M', monthNamesShort, monthNames);
950						break;
951					case 'y':
952						year = getNumber('y');
953						break;
954					case '@':
955						var date = new Date(getNumber('@'));
956						year = date.getFullYear();
957						month = date.getMonth() + 1;
958						day = date.getDate();
959						break;

960					case "'":
961						if (lookAhead("'"))
962							checkLiteral();
963						else
964							literal = true;
965						break;
966					default:
967						checkLiteral();
968				}
969		}
970		if (year == -1)
971			year = new Date().getFullYear();
972		else if (year < 100)
973			year += new Date().getFullYear() - new Date().getFullYear() % 100 +
974				(year <= shortYearCutoff ? 0 : -100);
975		if (doy > -1) {
976			month = 1;
977			day = doy;
978			do {
979				var dim = this._getDaysInMonth(year, month - 1);
980				if (day <= dim)
981					break;
982				month++;
983				day -= dim;
984			} while (true);
985		}
986		var date = this._daylightSavingAdjust(new Date(year, month - 1, day));
987		if (date.getFullYear() != year || date.getMonth() + 1 != month || date.getDate() != day)
988			throw 'Invalid date'; // E.g. 31/02/*
989		return date;
990	},
991
992	/* Standard date formats. */
993	ATOM: 'yy-mm-dd', // RFC 3339 (ISO 8601)
994	COOKIE: 'D, dd M yy',
995	ISO_8601: 'yy-mm-dd',
996	RFC_822: 'D, d M y',
997	RFC_850: 'DD, dd-M-y',
998	RFC_1036: 'D, d M y',
999	RFC_1123: 'D, d M yy',
1000	RFC_2822: 'D, d M yy',
1001	RSS: 'D, d M y', // RFC 822
1002	TIMESTAMP: '@',
1003	W3C: 'yy-mm-dd', // ISO 8601
1004
1005	/* Format a date object into a string value.
1006	   The format can be combinations of the following:
1007	   d  - day of month (no leading zero)
1008	   dd - day of month (two digit)
1009	   o  - day of year (no leading zeros)
1010	   oo - day of year (three digit)
1011	   D  - day name short
1012	   DD - day name long
1013	   m  - month of year (no leading zero)
1014	   mm - month of year (two digit)
1015	   M  - month name short
1016	   MM - month name long
1017	   y  - year (two digit)
1018	   yy - year (four digit)
1019	   @ - Unix timestamp (ms since 01/01/1970)
1020	   '...' - literal text
1021	   '' - single quote
1022
1023	   @param  format    string - the desired format of the date
1024	   @param  date      Date - the date value to format
1025	   @param  settings  Object - attributes include:
1026	                     dayNamesShort    string[7] - abbreviated names of the days from Sunday (optional)
1027	                     dayNames         string[7] - names of the days from Sunday (optional)
1028	                     monthNamesShort  string[12] - abbreviated names of the months (optional)
1029	                     monthNames       string[12] - names of the months (optional)
1030	   @return  string - the date in the above format */
1031	formatDate: function (format, date, settings) {
1032		if (!date)
1033			return '';
1034		var dayNamesShort = (settings ? settings.dayNamesShort : null) || this._defaults.dayNamesShort;
1035		var dayNames = (settings ? settings.dayNames : null) || this._defaults.dayNames;
1036		var monthNamesShort = (settings ? settings.monthNamesShort : null) || this._defaults.monthNamesShort;
1037		var monthNames = (settings ? settings.monthNames : null) || this._defaults.monthNames;
1038		// Check whether a format character is doubled
1039		var lookAhead = function(match) {
1040			var matches = (iFormat + 1 < format.length && format.charAt(iFormat + 1) == match);
1041			if (matches)
1042				iFormat++;
1043			return matches;
1044		};
1045		// Format a number, with leading zero if necessary
1046		var formatNumber = function(match, value, len) {
1047			var num = '' + value;
1048			if (lookAhead(match))
1049				while (num.length < len)
1050					num = '0' + num;
1051			return num;
1052		};
1053		// Format a name, short or long as requested
1054		var formatName = function(match, value, shortNames, longNames) {
1055			return (lookAhead(match) ? longNames[value] : shortNames[value]);
1056		};
1057		var output = '';
1058		var literal = false;
1059		if (date)
1060			for (var iFormat = 0; iFormat < format.length; iFormat++) {
1061				if (literal)
1062					if (format.charAt(iFormat) == "'" && !lookAhead("'"))
1063						literal = false;
1064					else
1065						output += format.charAt(iFormat);
1066				else
1067					switch (format.charAt(iFormat)) {
1068						case 'd':
1069							output += formatNumber('d', date.getDate(), 2);
1070							break;
1071						case 'D':
1072							output += formatName('D', date.getDay(), dayNamesShort, dayNames);
1073							break;
1074						case 'o':
1075							var doy = date.getDate();
1076							for (var m = date.getMonth() - 1; m >= 0; m--)
1077								doy += this._getDaysInMonth(date.getFullYear(), m);
1078							output += formatNumber('o', doy, 3);
1079							break;
1080						case 'm':
1081							output += formatNumber('m', date.getMonth() + 1, 2);
1082							break;
1083						case 'M':
1084							output += formatName('M', date.getMonth(), monthNamesShort, monthNames);
1085							break;
1086						case 'y':
1087							output += (lookAhead('y') ? date.getFullYear() :
1088								(date.getYear() % 100 < 10 ? '0' : '') + date.getYear() % 100);
1089							break;
1090						case '@':
1091							output += date.getTime();
1092							break;

1093						case "'":
1094							if (lookAhead("'"))
1095								output += "'";
1096							else
1097								literal = true;
1098							break;
1099						default:
1100							output += format.charAt(iFormat);
1101					}
1102			}
1103		return output;
1104	},
1105
1106	/* Extract all possible characters from the date format. */
1107	_possibleChars: function (format) {
1108		var chars = '';
1109		var literal = false;
1110		for (var iFormat = 0; iFormat < format.length; iFormat++)
1111			if (literal)
1112				if (format.charAt(iFormat) == "'" && !lookAhead("'"))
1113					literal = false;
1114				else
1115					chars += format.charAt(iFormat);
1116			else
1117				switch (format.charAt(iFormat)) {
1118					case 'd': case 'm': case 'y': case '@':
1119						chars += '0123456789';
1120						break;
1121					case 'D': case 'M':
1122						return null; // Accept anything
1123					case "'":
1124						if (lookAhead("'"))
1125							chars += "'";
1126						else
1127							literal = true;
1128						break;
1129					default:
1130						chars += format.charAt(iFormat);
1131				}
1132		return chars;
1133	},
1134
1135	/* Get a setting value, defaulting if necessary. */
1136	_get: function(inst, name) {
1137		return inst.settings[name] !== undefined ?
1138			inst.settings[name] : this._defaults[name];
1139	},
1140
1141	/* Parse existing date and initialise date picker. */
1142	_setDateFromField: function(inst) {
1143		var dateFormat = this._get(inst, 'dateFormat');
1144		var dates = inst.input ? inst.input.val() : null;
1145		inst.endDay = inst.endMonth = inst.endYear = null;
1146		var date = defaultDate = this._getDefaultDate(inst);
1147		var settings = this._getFormatConfig(inst);
1148		try {
1149			date = this.parseDate(dateFormat, dates, settings) || defaultDate;
1150		} catch (event) {
1151			this.log(event);
1152			date = defaultDate;
1153		}
1154		inst.selectedDay = date.getDate();
1155		inst.drawMonth = inst.selectedMonth = date.getMonth();
1156		inst.drawYear = inst.selectedYear = date.getFullYear();
1157		inst.currentDay = (dates ? date.getDate() : 0);
1158		inst.currentMonth = (dates ? date.getMonth() : 0);
1159		inst.currentYear = (dates ? date.getFullYear() : 0);
1160		this._adjustInstDate(inst);
1161	},
1162
1163	/* Retrieve the default date shown on opening. */
1164	_getDefaultDate: function(inst) {
1165		var date = this._determineDate(this._get(inst, 'defaultDate'), new Date());
1166		var minDate = this._getMinMaxDate(inst, 'min', true);
1167		var maxDate = this._getMinMaxDate(inst, 'max');
1168		date = (minDate && date < minDate ? minDate : date);
1169		date = (maxDate && date > maxDate ? maxDate : date);
1170		return date;
1171	},
1172
1173	/* A date may be specified as an exact value or a relative one. */
1174	_determineDate: function(date, defaultDate) {
1175		var offsetNumeric = function(offset) {
1176			var date = new Date();
1177			date.setDate(date.getDate() + offset);
1178			return date;
1179		};
1180		var offsetString = function(offset, getDaysInMonth) {
1181			var date = new Date();
1182			var year = date.getFullYear();
1183			var month = date.getMonth();
1184			var day = date.getDate();
1185			var pattern = /([+-]?[0-9]+)\s*(d|D|w|W|m|M|y|Y)?/g;
1186			var matches = pattern.exec(offset);
1187			while (matches) {
1188				switch (matches[2] || 'd') {
1189					case 'd' : case 'D' :
1190						day += parseInt(matches[1],10); break;
1191					case 'w' : case 'W' :
1192						day += parseInt(matches[1],10) * 7; break;
1193					case 'm' : case 'M' :
1194						month += parseInt(matches[1],10);
1195						day = Math.min(day, getDaysInMonth(year, month));
1196						break;
1197					case 'y': case 'Y' :
1198						year += parseInt(matches[1],10);
1199						day = Math.min(day, getDaysInMonth(year, month));
1200						break;
1201				}
1202				matches = pattern.exec(offset);
1203			}
1204			return new Date(year, month, day);
1205		};
1206		date = (date == null ? defaultDate :
1207			(typeof date == 'string' ? offsetString(date, this._getDaysInMonth) :
1208			(typeof date == 'number' ? (isNaN(date) ? defaultDate : offsetNumeric(date)) : date)));
1209		date = (date && date.toString() == 'Invalid Date' ? defaultDate : date);
1210		if (date) {
1211			date.setHours(0);
1212			date.setMinutes(0);
1213			date.setSeconds(0);
1214			date.setMilliseconds(0);
1215		}
1216		return this._daylightSavingAdjust(date);
1217	},
1218
1219	/* Handle switch to/from daylight saving.
1220	   Hours may be non-zero on daylight saving cut-over:
1221	   > 12 when midnight changeover, but then cannot generate
1222	   midnight datetime, so jump to 1AM, otherwise reset.
1223	   @param  date  (Date) the date to check
1224	   @return  (Date) the corrected date */
1225	_daylightSavingAdjust: function(date) {
1226		if (!date) return null;
1227		date.setHours(date.getHours() > 12 ? date.getHours() + 2 : 0);
1228		return date;
1229	},
1230
1231	/* Set the date(s) directly. */
1232	_setDate: function(inst, date, endDate) {
1233		var clear = !(date);
1234		var origMonth = inst.selectedMonth;
1235		var origYear = inst.selectedYear;
1236		date = this._determineDate(date, new Date());
1237		inst.selectedDay = inst.currentDay = date.getDate();
1238		inst.drawMonth = inst.selectedMonth = inst.currentMonth = date.getMonth();
1239		inst.drawYear = inst.selectedYear = inst.currentYear = date.getFullYear();
1240		if (origMonth != inst.selectedMonth || origYear != inst.selectedYear)
1241			this._notifyChange(inst);
1242		this._adjustInstDate(inst);
1243		if (inst.input) {
1244			inst.input.val(clear ? '' : this._formatDate(inst));
1245		}
1246	},
1247
1248	/* Retrieve the date(s) directly. */
1249	_getDate: function(inst) {
1250		var startDate = (!inst.currentYear || (inst.input && inst.input.val() == '') ? null :
1251			this._daylightSavingAdjust(new Date(
1252			inst.currentYear, inst.currentMonth, inst.currentDay)));
1253			return startDate;
1254	},
1255
1256	/* Generate the HTML for the current state of the date picker. */
1257	_generateHTML: function(inst) {
1258		var today = new Date();
1259		today = this._daylightSavingAdjust(
1260			new Date(today.getFullYear(), today.getMonth(), today.getDate())); // clear time
1261		var isRTL = this._get(inst, 'isRTL');
1262		var showButtonPanel = this._get(inst, 'showButtonPanel');
1263		var hideIfNoPrevNext = this._get(inst, 'hideIfNoPrevNext');
1264		var navigationAsDateFormat = this._get(inst, 'navigationAsDateFormat');
1265		var numMonths = this._getNumberOfMonths(inst);
1266		var showCurrentAtPos = this._get(inst, 'showCurrentAtPos');
1267		var stepMonths = this._get(inst, 'stepMonths');
1268		var stepBigMonths = this._get(inst, 'stepBigMonths');
1269		var isMultiMonth = (numMonths[0] != 1 || numMonths[1] != 1);
1270		var currentDate = this._daylightSavingAdjust((!inst.currentDay ? new Date(9999, 9, 9) :
1271			new Date(inst.currentYear, inst.currentMonth, inst.currentDay)));
1272		var minDate = this._getMinMaxDate(inst, 'min', true);
1273		var maxDate = this._getMinMaxDate(inst, 'max');
1274		var drawMonth = inst.drawMonth - showCurrentAtPos;
1275		var drawYear = inst.drawYear;
1276		if (drawMonth < 0) {
1277			drawMonth += 12;
1278			drawYear--;
1279		}
1280		if (maxDate) {
1281			var maxDraw = this._daylightSavingAdjust(new Date(maxDate.getFullYear(),
1282				maxDate.getMonth() - numMonths[1] + 1, maxDate.getDate()));
1283			maxDraw = (minDate && maxDraw < minDate ? minDate : maxDraw);
1284			while (this._daylightSavingAdjust(new Date(drawYear, drawMonth, 1)) > maxDraw) {
1285				drawMonth--;
1286				if (drawMonth < 0) {
1287					drawMonth = 11;
1288					drawYear--;
1289				}
1290			}
1291		}
1292		inst.drawMonth = drawMonth;
1293		inst.drawYear = drawYear;
1294		var prevText = this._get(inst, 'prevText');
1295		prevText = (!navigationAsDateFormat ? prevText : this.formatDate(prevText,
1296			this._daylightSavingAdjust(new Date(drawYear, drawMonth - stepMonths, 1)),
1297			this._getFormatConfig(inst)));
1298		var prev = (this._canAdjustMonth(inst, -1, drawYear, drawMonth) ?
1299			'<a class="ui-datepicker-prev ui-corner-all" onclick="DP_jQuery.datepicker._adjustDate(\'#' + inst.id + '\', -' + stepMonths + ', \'M\');"' +
1300			' title="' + prevText + '"><span class="ui-icon ui-icon-circle-triangle-' + ( isRTL ? 'e' : 'w') + '">' + prevText + '</span></a>' :
1301			(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>'));
1302		var nextText = this._get(inst, 'nextText');
1303		nextText = (!navigationAsDateFormat ? nextText : this.formatDate(nextText,
1304			this._daylightSavingAdjust(new Date(drawYear, drawMonth + stepMonths, 1)),
1305			this._getFormatConfig(inst)));
1306		var next = (this._canAdjustMonth(inst, +1, drawYear, drawMonth) ?
1307			'<a class="ui-datepicker-next ui-corner-all" onclick="DP_jQuery.datepicker._adjustDate(\'#' + inst.id + '\', +' + stepMonths + ', \'M\');"' +
1308			' title="' + nextText + '"><span class="ui-icon ui-icon-circle-triangle-' + ( isRTL ? 'w' : 'e') + '">' + nextText + '</span></a>' :
1309			(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>'));
1310		var currentText = this._get(inst, 'currentText');
1311		var gotoDate = (this._get(inst, 'gotoCurrent') && inst.currentDay ? currentDate : today);
1312		currentText = (!navigationAsDateFormat ? currentText :
1313			this.formatDate(currentText, gotoDate, this._getFormatConfig(inst)));
1314		var controls = (!inst.inline ? '<button type="button" class="ui-datepicker-close ui-state-default ui-priority-primary ui-corner-all" onclick="DP_jQuery.datepicker._hideDatepicker();">' + this._get(inst, 'closeText') + '</button>' : '');
1315		var buttonPanel = (showButtonPanel) ? '<div class="ui-datepicker-buttonpane ui-widget-content">' + (isRTL ? controls : '') +
1316			(this._isInRange(inst, gotoDate) ? '<button type="button" class="ui-datepicker-current ui-state-default ui-priority-secondary ui-corner-all" onclick="DP_jQuery.datepicker._gotoToday(\'#' + inst.id + '\');"' +
1317			'>' + currentText + '</button>' : '') + (isRTL ? '' : controls) + '</div>' : '';
1318		var firstDay = parseInt(this._get(inst, 'firstDay'),10);
1319		firstDay = (isNaN(firstDay) ? 0 : firstDay);
1320		var dayNames = this._get(inst, 'dayNames');
1321		var dayNamesShort = this._get(inst, 'dayNamesShort');
1322		var dayNamesMin = this._get(inst, 'dayNamesMin');
1323		var monthNames = this._get(inst, 'monthNames');
1324		var monthNamesShort = this._get(inst, 'monthNamesShort');
1325		var beforeShowDay = this._get(inst, 'beforeShowDay');
1326		var showOtherMonths = this._get(inst, 'showOtherMonths');
1327		var calculateWeek = this._get(inst, 'calculateWeek') || this.iso8601Week;
1328		var endDate = inst.endDay ? this._daylightSavingAdjust(
1329			new Date(inst.endYear, inst.endMonth, inst.endDay)) : currentDate;
1330		var defaultDate = this._getDefaultDate(inst);
1331		var html = '';
1332		for (var row = 0; row < numMonths[0]; row++) {
1333			var group = '';
1334			for (var col = 0; col < numMonths[1]; col++) {
1335				var selectedDate = this._daylightSavingAdjust(new Date(drawYear, drawMonth, inst.selectedDay));
1336				var cornerClass = ' ui-corner-all';
1337				var calender = '';
1338				if (isMultiMonth) {
1339					calender += '<div class="ui-datepicker-group ui-datepicker-group-';
1340					switch (col) {
1341						case 0: calender += 'first'; cornerClass = ' ui-corner-' + (isRTL ? 'right' : 'left'); break;
1342						case numMonths[1]-1: calender += 'last'; cornerClass = ' ui-corner-' + (isRTL ? 'left' : 'right'); break;
1343						default: calender += 'middle'; cornerClass = ''; break;
1344					}
1345					calender += '">';
1346				}
1347				calender += '<div class="ui-datepicker-header ui-widget-header ui-helper-clearfix' + cornerClass + '">' +
1348					(/all|left/.test(cornerClass) && row == 0 ? (isRTL ? next : prev) : '') +
1349					(/all|right/.test(cornerClass) && row == 0 ? (isRTL ? prev : next) : '') +
1350					this._generateMonthYearHeader(inst, drawMonth, drawYear, minDate, maxDate,
1351					selectedDate, row > 0 || col > 0, monthNames, monthNamesShort) + // draw month headers
1352					'</div><table class="ui-datepicker-calendar"><thead>' +
1353					'<tr>';
1354				var thead = '';
1355				for (var dow = 0; dow < 7; dow++) { // days of the week
1356					var day = (dow + firstDay) % 7;
1357					thead += '<th' + ((dow + firstDay + 6) % 7 >= 5 ? ' class="ui-datepicker-week-end"' : '') + '>

1357' +
1358						'<span title="' + dayNames[day] + '">' + dayNamesMin[day] + '</span></th>';
1359				}
1360				calender += thead + '</tr></thead><tbody>';
1361				var daysInMonth = this._getDaysInMonth(drawYear, drawMonth);
1362				if (drawYear == inst.selectedYear && drawMonth == inst.selectedMonth)
1363					inst.selectedDay = Math.min(inst.selectedDay, daysInMonth);
1364				var leadDays = (this._getFirstDayOfMonth(drawYear, drawMonth) - firstDay + 7) % 7;
1365				var numRows = (isMultiMonth ? 6 : Math.ceil((leadDays + daysInMonth) / 7)); // calculate the number of rows to generate
1366				var printDate = this._daylightSavingAdjust(new Date(drawYear, drawMonth, 1 - leadDays));
1367				for (var dRow = 0; dRow < numRows; dRow++) { // create date picker rows
1368					calender += '<tr>';
1369					var tbody = '';
1370					for (var dow = 0; dow < 7; dow++) { // create date picker days
1371						var daySettings = (beforeShowDay ?
1372							beforeShowDay.apply((inst.input ? inst.input[0] : null), [printDate]) : [true, '']);
1373						var otherMonth = (printDate.getMonth() != drawMonth);
1374						var unselectable = otherMonth || !daySettings[0] ||
1375							(minDate && printDate < minDate) || (maxDate && printDate > maxDate);
1376						tbody += '<td class="' +
1377							((dow + firstDay + 6) % 7 >= 5 ? ' ui-datepicker-week-end' : '') + // highlight weekends
1378							(otherMonth ? ' ui-datepicker-other-month' : '') + // highlight days from other months
1379							((printDate.getTime() == selectedDate.getTime() && drawMonth == inst.selectedMonth && inst._keyEvent) || // user pressed key
1380							(defaultDate.getTime() == printDate.getTime() && defaultDate.getTime() == selectedDate.getTime()) ?
1381							// or defaultDate is current printedDate and defaultDate is selectedDate
1382							' ' + this._dayOverClass : '') + // highlight selected day
1383							(unselectable ? ' ' + this._unselectableClass + ' ui-state-disabled': '') +  // highlight unselectable days
1384							(otherMonth && !showOtherMonths ? '' : ' ' + daySettings[1] + // highlight custom dates
1385							(printDate.getTime() >= currentDate.getTime() && printDate.getTime() <= endDate.getTime() ? // in current range
1386							' ' + this._currentClass : '') + // highlight selected day
1387							(printDate.getTime() == today.getTime() ? ' ui-datepicker-today' : '')) + '"' + // highlight today (if different)
1388							((!otherMonth || showOtherMonths) && daySettings[2] ? ' title="' + daySettings[2] + '"' : '') + // cell title
1389							(unselectable ? '' : ' onclick="DP_jQuery.datepicker._selectDay(\'#' +
1390							inst.id + '\',' + drawMonth + ',' + drawYear + ', this);return false;"') + '>' + // actions
1391							(otherMonth ? (showOtherMonths ? printDate.getDate() : '&#xa0;') : // display for other months
1392							(unselectable ? '<span class="ui-state-default">' + printDate.getDate() + '</span>' : '<a class="ui-state-default' +
1393							(printDate.getTime() == today.getTime() ? ' ui-state-highlight' : '') +
1394							(printDate.getTime() >= currentDate.getTime() && printDate.getTime() <= endDate.getTime() ? // in current range
1395							' ui-state-active' : '') + // highlight selected day
1396							'" href="#">' + printDate.getDate() + '</a>')) + '</td>'; // display for this month
1397						printDate.setDate(printDate.getDate() + 1);
1398						printDate = this._daylightSavingAdjust(printDate);
1399					}
1400					calender += tbody + '</tr>';
1401				}
1402				drawMonth++;
1403				if (drawMonth > 11) {
1404					drawMonth = 0;
1405					drawYear++;
1406				}
1407				calender += '</tbody></table>' + (isMultiMonth ? '</div>' + 
1408							((numMonths[0] > 0 && col == numMonths[1]-1) ? '<div class="ui-datepicker-row-break"></div>' : '') : '');
1409				group += calender;
1410			}
1411			html += group;
1412		}
1413		html += buttonPanel + ($.browser.msie && parseInt($.browser.version,10) < 7 && !inst.inline ?
1414			'<iframe src="javascript:false;" class="ui-datepicker-cover" frameborder="0"></iframe>' : '');
1415		inst._keyEvent = false;
1416		return html;
1417	},
1418
1419	/* Generate the month and year header. */
1420	_generateMonthYearHeader: function(inst, drawMonth, drawYear, minDate, maxDate,
1421			selectedDate, secondary, monthNames, monthNamesShort) {
1422		minDate = (inst.rangeStart && minDate && selectedDate < minDate ? selectedDate : minDate);
1423		var changeMonth = this._get(inst, 'changeMonth');
1424		var changeYear = this._get(inst, 'changeYear');
1425		var showMonthAfterYear = this._get(inst, 'showMonthAfterYear');
1426		var html = '<div class="ui-datepicker-title">';
1427		var monthHtml = '';
1428		// month selection
1429		if (secondary || !changeMonth)
1430			monthHtml += '<span class="ui-datepicker-month">' + monthNames[drawMonth] + '</span> ';
1431		else {
1432			var inMinYear = (minDate && minDate.getFullYear() == drawYear);
1433			var inMaxYear = (maxDate && maxDate.getFullYear() == drawYear);
1434			monthHtml += '<select class="ui-datepicker-month" ' +
1435				'onchange="DP_jQuery.datepicker._selectMonthYear(\'#' + inst.id + '\', this, \'M\');" ' +
1436				'onclick="DP_jQuery.datepicker._clickMonthYear(\'#' + inst.id + '\');"' +
1437			 	'>';

1438			for (var month = 0; month < 12; month++) {
1439				if ((!inMinYear || month >= minDate.getMonth()) &&
1440						(!inMaxYear || month <= maxDate.getMonth()))
1441					monthHtml += '<option value="' + month + '"' +
1442						(month == drawMonth ? ' selected="selected"' : '') +
1443						'>' + monthNamesShort[month] + '</option>';
1444			}
1445			monthHtml += '</select>';
1446		}
1447		if (!showMonthAfterYear)
1448			html += monthHtml + ((secondary || changeMonth || changeYear) && (!(changeMonth && changeYear)) ? '&#xa0;' : '');
1449		// year selection
1450		if (secondary || !changeYear)
1451			html += '<span class="ui-datepicker-year">' + drawYear + '</span>';
1452		else {
1453			// determine range of years to display
1454			var years = this._get(inst, 'yearRange').split(':');
1455			var year = 0;
1456			var endYear = 0;
1457			if (years.length != 2) {
1458				year = drawYear - 10;
1459				endYear = drawYear + 10;
1460			} else if (years[0].charAt(0) == '+' || years[0].charAt(0) == '-') {
1461				year = drawYear + parseInt(years[0], 10);
1462				endYear = drawYear + parseInt(years[1], 10);
1463			} else {
1464				year = parseInt(years[0], 10);
1465				endYear = parseInt(years[1], 10);
1466			}
1467			year = (minDate ? Math.max(year, minDate.getFullYear()) : year);
1468			endYear = (maxDate ? Math.min(endYear, maxDate.getFullYear()) : endYear);
1469			html += '<select class="ui-datepicker-year" ' +
1470				'onchange="DP_jQuery.datepicker._selectMonthYear(\'#' + inst.id + '\', this, \'Y\');" ' +
1471				'onclick="DP_jQuery.datepicker._clickMonthYear(\'#' + inst.id + '\');"' +
1472				'>';
1473			for (; year <= endYear; year++) {
1474				html += '<option value="' + year + '"' +
1475					(year == drawYear ? ' selected="selected"' : '') +
1476					'>' + year + '</option>';
1477			}
1478			html += '</select>';
1479		}
1480		if (showMonthAfterYear)
1481			html += (secondary || changeMonth || changeYear ? '&#xa0;' : '') + monthHtml;
1482		html += '</div>'; // Close datepicker_header
1483		return html;
1484	},
1485
1486	/* Adjust one of the date sub-fields. */
1487	_adjustInstDate: function(inst, offset, period) {
1488		var year = inst.drawYear + (period == 'Y' ? offset : 0);
1489		var month = inst.drawMonth + (period == 'M' ? offset : 0);
1490		var day = Math.min(inst.selectedDay, this._getDaysInMonth(year, month)) +
1491			(period == 'D' ? offset : 0);
1492		var date = this._daylightSavingAdjust(new Date(year, month, day));
1493		// ensure it is within the bounds set
1494		var minDate = this._getMinMaxDate(inst, 'min', true);
1495		var maxDate = this._getMinMaxDate(inst, 'max');
1496		date = (minDate && date < minDate ? minDate : date);
1497		date = (maxDate && date > maxDate ? maxDate : date);
1498		inst.selectedDay = date.getDate();
1499		inst.drawMonth = inst.selectedMonth = date.getMonth();
1500		inst.drawYear = inst.selectedYear = date.getFullYear();
1501		if (period == 'M' || period == 'Y')
1502			this._notifyChange(inst);
1503	},
1504
1505	/* Notify change of month/year. */
1506	_notifyChange: function(inst) {
1507		var onChange = this._get(inst, 'onChangeMonthYear');
1508		if (onChange)
1509			onChange.apply((inst.input ? inst.input[0] : null),
1510				[inst.selectedYear, inst.selectedMonth + 1, inst]);
1511	},
1512
1513	/* Determine the number of months to show. */
1514	_getNumberOfMonths: function(inst) {
1515		var numMonths = this._get(inst, 'numberOfMonths');
1516		return (numMonths == null ? [1, 1] : (typeof numMonths == 'number' ? [1, numMonths] : numMonths));
1517	},
1518
1519	/* Determine the current maximum date - ensure no time components are set - may be overridden for a range. */
1520	_getMinMaxDate: function(inst, minMax, checkRange) {
1521		var date = this._determineDate(this._get(inst, minMax + 'Date'), null);
1522		return (!checkRange || !inst.rangeStart ? date :
1523			(!date || inst.rangeStart > date ? inst.rangeStart : date));
1524	},
1525
1526	/* Find the number of days in a given month. */
1527	_getDaysInMonth: function(year, month) {
1528		return 32 - new Date(year, month, 32).getDate();
1529	},
1530
1531	/* Find the day of the week of the first of a month. */
1532	_getFirstDayOfMonth: function(year, month) {
1533		return new Date(year, month, 1).getDay();
1534	},
1535
1536	/* Determines if we should allow a "next/prev" month display change. */
1537	_canAdjustMonth: function(inst, offset, curYear, curMonth) {
1538		var numMonths = this._getNumberOfMonths(inst);
1539		var date = this._daylightSavingAdjust(new Date(
1540			curYear, curMonth + (offset < 0 ? offset : numMonths[1]), 1));
1541		if (offset < 0)
1542			date.setDate(this._getDaysInMonth(date.getFullYear(), date.getMonth()));
1543		return this._isInRange(inst, date);
1544	},
1545
1546	/* Is the given date in the accepted range? */
1547	_isInRange: function(inst, date) {
1548		// during range selection, use minimum of selected date and range start
1549		var newMinDate = (!inst.rangeStart ? null : this._daylightSavingAdjust(
1550			new Date(inst.selectedYear, inst.selectedMonth, inst.selectedDay)));
1551		newMinDate = (newMinDate && inst.rangeStart < newMinDate ? inst.rangeStart : newMinDate);
1552		var minDate = newMinDate || this._getMinMaxDate(inst, 'min');
1553		var maxDate = this._getMinMaxDate(inst, 'max');
1554		return ((!minDate || date >= minDate) && (!maxDate || date <= maxDate));
1555	},
1556
1557	/* Provide the configuration settings for formatting/parsing. */
1558	_getFormatConfig: function(inst) {
1559		var shortYearCutoff = this._get(inst, 'shortYearCutoff');
1560		shortYearCutoff = (typeof shortYearCutoff != 'string' ? shortYearCutoff :
1561			new Date().getFullYear() % 100 + parseInt(shortYearCutoff, 10));
1562		return {shortYearCutoff: shortYearCutoff,
1563			dayNamesShort: this._get(inst, 'dayNamesShort'), dayNames: this._get(inst, 'dayNames'),
1564			monthNamesShort: this._get(inst, 'monthNamesShort'), monthNames: this._get(inst, 'monthNames')};
1565	},
1566
1567	/* Format the given date for display. */
1568	_formatDate: function(inst, day, month, year) {
1569		if (!day) {
1570			inst.currentDay = inst.selectedDay;
1571			inst.currentMonth = inst.selectedMonth;
1572			inst.currentYear = inst.selectedYear;
1573		}
1574		var date = (day ? (typeof day == 'object' ? day :
1575			this._daylightSavingAdjust(new Date(year, month, day))) :
1576			this._daylightSavingAdjust(new Date(inst.currentYear, inst.currentMonth, inst.currentDay)));
1577		return this.formatDate(this._get(inst, 'dateFormat'), date, this._getFormatConfig(inst));
1578	}
1579});
1580
1581/* jQuery extend now ignores nulls! */
1582function extendRemove(target, props) {
1583	$.extend(target, props);
1584	for (var name in props)
1585		if (props[name] == null || props[name] == undefined)
1586			target[name] = props[name];
1587	return target;
1588};
1589
1590/* Determine whether an object is an array. */
1591function isArray(a) {
1592	return (a && (($.browser.safari && typeof a == 'object' && a.length) ||
1593		(a.constructor && a.constructor.toString().match(/\Array\(\)/))));
1594};
1595
1596/* Invoke the datepicker functionality.
1597   @param  options  string - a command, optionally followed by additional parameters or
1598                    Object - settings for attaching new datepicker functionality
1599   @return  jQuery object */
1600$.fn.datepicker = function(options){
1601
1602	/* Initialise the date picker. */
1603	if (!$.datepicker.initialized) {
1604		$(document).mousedown($.datepicker._checkExternalClick).
1605			find('body').append($.datepicker.dpDiv);
1606		$.datepicker.initialized = true;
1607	}
1608
1609	var otherArgs = Array.prototype.slice.call(arguments, 1);
1610	if (typeof options == 'string' && (options == 'isDisabled' || options == 'getDate'))
1611		return $.datepicker['_' + options + 'Datepicker'].
1612			apply($.datepicker, [this[0]].concat(otherArgs));
1613	return this.each(function() {
1614		typeof options == 'string' ?
1615			$.datepicker['_' + options + 'Datepicker'].
1616				apply($.datepicker, [this].concat(otherArgs)) :
1617			$.datepicker._attachDatepicker(this, options);
1618	});
1619};
1620
1621$.datepicker = new Datepicker(); // singleton instance
1622$.datepicker.initialized = false;

1623$.datepicker.uuid = new Date().getTime();
1624$.datepicker.version = "1.7.1";
1625
1626// Workaround for #4055
1627// Add another global to avoid noConflict issues with inline event handlers
1628window.DP_jQuery = $;
1629
1630})(jQuery);