/*!
 * jQuery UI 1.8.2
 *
 * Copyright (c) 2010 AUTHORS.txt (http://jqueryui.com/about)
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 *
 * http://docs.jquery.com/UI
 */
(function(c){c.ui=c.ui||{};if(!c.ui.version){c.extend(c.ui,{version:"1.8.2",plugin:{add:function(a,b,d){a=c.ui[a].prototype;for(var e in d){a.plugins[e]=a.plugins[e]||[];a.plugins[e].push([b,d[e]])}},call:function(a,b,d){if((b=a.plugins[b])&&a.element[0].parentNode)for(var e=0;e<b.length;e++)a.options[b[e][0]]&&b[e][1].apply(a.element,d)}},contains:function(a,b){return document.compareDocumentPosition?a.compareDocumentPosition(b)&16:a!==b&&a.contains(b)},hasScroll:function(a,b){if(c(a).css("overflow")==
"hidden")return false;b=b&&b=="left"?"scrollLeft":"scrollTop";var d=false;if(a[b]>0)return true;a[b]=1;d=a[b]>0;a[b]=0;return d},isOverAxis:function(a,b,d){return a>b&&a<b+d},isOver:function(a,b,d,e,f,g){return c.ui.isOverAxis(a,d,f)&&c.ui.isOverAxis(b,e,g)},keyCode:{ALT:18,BACKSPACE:8,CAPS_LOCK:20,COMMA:188,COMMAND:91,COMMAND_LEFT:91,COMMAND_RIGHT:93,CONTROL:17,DELETE:46,DOWN:40,END:35,ENTER:13,ESCAPE:27,HOME:36,INSERT:45,LEFT:37,MENU:93,NUMPAD_ADD:107,NUMPAD_DECIMAL:110,NUMPAD_DIVIDE:111,NUMPAD_ENTER:108,
NUMPAD_MULTIPLY:106,NUMPAD_SUBTRACT:109,PAGE_DOWN:34,PAGE_UP:33,PERIOD:190,RIGHT:39,SHIFT:16,SPACE:32,TAB:9,UP:38,WINDOWS:91}});c.fn.extend({_focus:c.fn.focus,focus:function(a,b){return typeof a==="number"?this.each(function(){var d=this;setTimeout(function(){c(d).focus();b&&b.call(d)},a)}):this._focus.apply(this,arguments)},enableSelection:function(){return this.attr("unselectable","off").css("MozUserSelect","")},disableSelection:function(){return this.attr("unselectable","on").css("MozUserSelect",
"none")},scrollParent:function(){var a;a=c.browser.msie&&/(static|relative)/.test(this.css("position"))||/absolute/.test(this.css("position"))?this.parents().filter(function(){return/(relative|absolute|fixed)/.test(c.curCSS(this,"position",1))&&/(auto|scroll)/.test(c.curCSS(this,"overflow",1)+c.curCSS(this,"overflow-y",1)+c.curCSS(this,"overflow-x",1))}).eq(0):this.parents().filter(function(){return/(auto|scroll)/.test(c.curCSS(this,"overflow",1)+c.curCSS(this,"overflow-y",1)+c.curCSS(this,"overflow-x",
1))}).eq(0);return/fixed/.test(this.css("position"))||!a.length?c(document):a},zIndex:function(a){if(a!==undefined)return this.css("zIndex",a);if(this.length){a=c(this[0]);for(var b;a.length&&a[0]!==document;){b=a.css("position");if(b=="absolute"||b=="relative"||b=="fixed"){b=parseInt(a.css("zIndex"));if(!isNaN(b)&&b!=0)return b}a=a.parent()}}return 0}});c.extend(c.expr[":"],{data:function(a,b,d){return!!c.data(a,d[3])},focusable:function(a){var b=a.nodeName.toLowerCase(),d=c.attr(a,"tabindex");return(/input|select|textarea|button|object/.test(b)?
!a.disabled:"a"==b||"area"==b?a.href||!isNaN(d):!isNaN(d))&&!c(a)["area"==b?"parents":"closest"](":hidden").length},tabbable:function(a){var b=c.attr(a,"tabindex");return(isNaN(b)||b>=0)&&c(a).is(":focusable")}})}})(jQuery);
;/*
 * jQuery UI Datepicker 1.8.2
 *
 * Copyright (c) 2010 AUTHORS.txt (http://jqueryui.com/about)
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 *
 * http://docs.jquery.com/UI/Datepicker
 *
 * Depends:
 *	jquery.ui.core.js
 */

(function($) { // hide the namespace

	$.extend($.ui, { datepicker: { version: "@VERSION" } });

	var PROP_NAME = 'datepicker';
	var dpuuid = new Date().getTime();

	/* Date picker manager.
	   Use the singleton instance of this class, $.datepicker, to interact with the date picker.
	   Settings for (groups of) date pickers are maintained in an instance object,
	   allowing multiple different settings on the same page. */

	function Datepicker() {
		this.debug = false; // Change this to true to start debugging
		this._curInst = null; // The current instance in use
		this._keyEvent = false; // If the last event was a key event
		this._disabledInputs = []; // List of date picker inputs that have been disabled
		this._datepickerShowing = false; // True if the popup picker is showing , false if not
		this._inDialog = false; // True if showing within a "dialog", false if not
		this._mainDivId = 'ui-datepicker-div'; // The ID of the main datepicker division
		this._inlineClass = 'ui-datepicker-inline'; // The name of the inline marker class
		this._appendClass = 'ui-datepicker-append'; // The name of the append marker class
		this._triggerClass = 'ui-datepicker-trigger'; // The name of the trigger marker class
		this._dialogClass = 'ui-datepicker-dialog'; // The name of the dialog marker class
		this._disableClass = 'ui-datepicker-disabled'; // The name of the disabled covering marker class
		this._unselectableClass = 'ui-datepicker-unselectable'; // The name of the unselectable cell marker class
		this._currentClass = 'ui-datepicker-current-day'; // The name of the current day marker class
		this._dayOverClass = 'ui-datepicker-days-cell-over'; // The name of the day hover marker class
		this.regional = []; // Available regional settings, indexed by language code
		this.regional[''] = { // Default regional settings
			closeText: 'Done', // Display text for close link
			prevText: 'Prev', // Display text for previous month link
			nextText: 'Next', // Display text for next month link
			currentText: 'Today', // Display text for current month link
			monthNames: ['January','February','March','April','May','June',
				'July','August','September','October','November','December'], // Names of months for drop-down and formatting
			monthNamesShort: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'], // For formatting
			dayNames: ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'], // For formatting
			dayNamesShort: ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'], // For formatting
			dayNamesMin: ['Su','Mo','Tu','We','Th','Fr','Sa'], // Column headings for days starting at Sunday
			weekHeader: 'Wk', // Column header for week of the year
			dateFormat: 'mm/dd/yy', // See format options on parseDate
			firstDay: 0, // The first day of the week, Sun = 0, Mon = 1, ...
			isRTL: false, // True if right-to-left language, false if left-to-right
			showMonthAfterYear: false, // True if the year select precedes month, false for month then year
			yearSuffix: '' // Additional text to append to the year in the month headers
		};
		this._defaults = { // Global defaults for all the date picker instances
			showOn: 'focus', // 'focus' for popup on focus,
				// 'button' for trigger button, or 'both' for either
			showAnim: 'fadeIn', // Name of jQuery animation for popup
			showOptions: {}, // Options for enhanced animations
			defaultDate: null, // Used when field is blank: actual date,
				// +/-number for offset from today, null for today
			appendText: '', // Display text following the input box, e.g. showing the format
			buttonText: '...', // Text for trigger button
			buttonImage: '', // URL for trigger button image
			buttonImageOnly: false, // True if the image appears alone, false if it appears on a button
			hideIfNoPrevNext: false, // True to hide next/previous month links
				// if not applicable, false to just disable them
			navigationAsDateFormat: false, // True if date formatting applied to prev/today/next links
			gotoCurrent: false, // True if today link goes back to current selection instead
			changeMonth: false, // True if month can be selected directly, false if only prev/next
			changeYear: false, // True if year can be selected directly, false if only prev/next
			yearRange: 'c-10:c+10', // Range of years to display in drop-down,
				// either relative to today's year (-nn:+nn), relative to currently displayed year
				// (c-nn:c+nn), absolute (nnnn:nnnn), or a combination of the above (nnnn:-n)
			showOtherMonths: false, // True to show dates in other months, false to leave blank
			selectOtherMonths: false, // True to allow selection of dates in other months, false for unselectable
			showWeek: false, // True to show week of the year, false to not show it
			calculateWeek: this.iso8601Week, // How to calculate the week of the year,
				// takes a Date and returns the number of the week for it
			shortYearCutoff: '+10', // Short year values < this are in the current century,
				// > this are in the previous century,
				// string value starting with '+' for current year + value
			minDate: null, // The earliest selectable date, or null for no limit
			maxDate: null, // The latest selectable date, or null for no limit
			duration: '_default', // Duration of display/closure
			beforeShowDay: null, // Function that takes a date and returns an array with
				// [0] = true if selectable, false if not, [1] = custom CSS class name(s) or '',
				// [2] = cell title (optional), e.g. $.datepicker.noWeekends
			beforeShow: null, // Function that takes an input field and
				// returns a set of custom settings for the date picker
			onSelect: null, // Define a callback function when a date is selected
			onChangeMonthYear: null, // Define a callback function when the month or year is changed
			onOpen: null,
			onClose: null, // Define a callback function when the datepicker is closed
			numberOfMonths: 1, // Number of months to show at a time
			showCurrentAtPos: 0, // The position in multipe months at which to show the current month (starting at 0)
			stepMonths: 1, // Number of months to step back/forward
			stepBigMonths: 12, // Number of months to step back/forward for the big links
			altField: '', // Selector for an alternate field to store selected dates into
			altFormat: '', // The date format to use for the alternate field
			constrainInput: true, // The input is constrained by the current date format
			showButtonPanel: false, // True to show button panel, false to not show it
			autoSize: false // True to size the input for the date format, false to leave as is
		};
		$.extend(this._defaults, this.regional['']);
		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>');
	}

	$.extend(Datepicker.prototype, {
		/* Class name added to elements to indicate already configured with a date picker. */
		markerClassName: 'hasDatepicker',

		/* Debug logging (if enabled). */
		log: function () {
			if (this.debug)
				console.log.apply('', arguments);
		},
		
		// TODO rename to "widget" when switching to widget factory
		_widgetDatepicker: function() {
			return this.dpDiv;
		},

		/* Override the default settings for all instances of the date picker.
		   @param  settings  object - the new settings to use as defaults (anonymous object)
		   @return the manager object */
		setDefaults: function(settings) {
			extendRemove(this._defaults, settings || {});
			return this;
		},

		/* Attach the date picker to a jQuery selection.
		   @param  target    element - the target input field or division or span
		   @param  settings  object - the new settings to use for this date picker instance (anonymous) */
		_attachDatepicker: function(target, settings) {
			// check for settings on the control itself - in namespace 'date:'
			var inlineSettings = null;
			for (var attrName in this._defaults) {
				var attrValue = target.getAttribute('date:' + attrName);
				if (attrValue) {
					inlineSettings = inlineSettings || {};
					try {
						inlineSettings[attrName] = eval(attrValue);
					} catch (err) {
						inlineSettings[attrName] = attrValue;
					}
				}
			}
			var nodeName = target.nodeName.toLowerCase();
			var inline = (nodeName == 'div' || nodeName == 'span');
			if (!target.id)
				target.id = 'dp' + (++this.uuid);
			var inst = this._newInst($(target), inline);
			inst.settings = $.extend({}, settings || {}, inlineSettings || {});
			if (nodeName == 'input') {
				this._connectDatepicker(target, inst);
			} else if (inline) {
				this._inlineDatepicker(target, inst);
			}
		},

		/* Create a new instance object. */
		_newInst: function(target, inline) {
			var id = target[0].id.replace(/([^A-Za-z0-9_])/g, '\\\\$1'); // escape jQuery meta chars
			return {id: id, input: target, // associated target
				selectedDay: 0, selectedMonth: 0, selectedYear: 0, // current selection
				drawMonth: 0, drawYear: 0, // month being drawn
				inline: inline, // is datepicker inline or not
				dpDiv: (!inline ? this.dpDiv : // presentation div
				$('<div class="' + this._inlineClass + ' ui-datepicker ui-widget ui-widget-content ui-helper-clearfix ui-corner-all"></div>'))};
		},

		/* Attach the date picker to an input field. */
		_connectDatepicker: function(target, inst) {
			var input = $(target);
			inst.append = $([]);
			inst.trigger = $([]);
			if (input.hasClass(this.markerClassName))
				return;
			this._attachments(input, inst);
			input.addClass(this.markerClassName).keydown(this._doKeyDown).
				keypress(this._doKeyPress).keyup(this._doKeyUp).
				bind("setData.datepicker", function(event, key, value) {
					inst.settings[key] = value;
				}).bind("getData.datepicker", function(event, key) {
					return this._get(inst, key);
				});
			this._autoSize(inst);
			$.data(target, PROP_NAME, inst);
		},

		/* Make attachments based on settings. */
		_attachments: function(input, inst) {
			var appendText = this._get(inst, 'appendText');
			var isRTL = this._get(inst, 'isRTL');
			if (inst.append)
				inst.append.remove();
			if (appendText) {
				inst.append = $('<span class="' + this._appendClass + '">' + appendText + '</span>');
				input[isRTL ? 'before' : 'after'](inst.append);
			}
			input.unbind('focus', this._showDatepicker);
			if (inst.trigger)
				inst.trigger.remove();
			var showOn = this._get(inst, 'showOn');
			if (showOn == 'focus' || showOn == 'both') // pop-up date picker when in the marked field
				input.focus(this._showDatepicker);
			if (showOn == 'button' || showOn == 'both') { // pop-up date picker when button clicked
				var buttonText = this._get(inst, 'buttonText');
				var buttonImage = this._get(inst, 'buttonImage');
				inst.trigger = $(this._get(inst, 'buttonImageOnly') ?
					$('<img/>').addClass(this._triggerClass).
						attr({ src: buttonImage, alt: buttonText, title: buttonText }) :
					$('<button type="button"></button>').addClass(this._triggerClass).
						html(buttonImage == '' ? buttonText : $('<img/>').attr(
						{ src:buttonImage, alt:buttonText, title:buttonText })));
				input[isRTL ? 'before' : 'after'](inst.trigger);
				inst.trigger.click(function() {
					if ($.datepicker._datepickerShowing && $.datepicker._lastInput == input[0])
						$.datepicker._hideDatepicker();
					else
						$.datepicker._showDatepicker(input[0]);
					return false;
				});
			}
		},

		/* Apply the maximum length for the date format. */
		_autoSize: function(inst) {
			if (this._get(inst, 'autoSize') && !inst.inline) {
				var date = new Date(2009, 12 - 1, 20); // Ensure double digits
				var dateFormat = this._get(inst, 'dateFormat');
				if (dateFormat.match(/[DM]/)) {
					var findMax = function(names) {
						var max = 0;
						var maxI = 0;
						for (var i = 0; i < names.length; i++) {
							if (names[i].length > max) {
								max = names[i].length;
								maxI = i;
							}
						}
						return maxI;
					};
					date.setMonth(findMax(this._get(inst, (dateFormat.match(/MM/) ?
						'monthNames' : 'monthNamesShort'))));
					date.setDate(findMax(this._get(inst, (dateFormat.match(/DD/) ?
						'dayNames' : 'dayNamesShort'))) + 20 - date.getDay());
				}
				inst.input.attr('size', this._formatDate(inst, date).length);
			}
		},

		/* Attach an inline date picker to a div. */
		_inlineDatepicker: function(target, inst) {
			var divSpan = $(target);
			if (divSpan.hasClass(this.markerClassName))
				return;
			divSpan.addClass(this.markerClassName).append(inst.dpDiv).
				bind("setData.datepicker", function(event, key, value){
					inst.settings[key] = value;
				}).bind("getData.datepicker", function(event, key){
					return this._get(inst, key);
				});
			$.data(target, PROP_NAME, inst);
			this._setDate(inst, this._getDefaultDate(inst), true);
			this._updateDatepicker(inst);
			this._updateAlternate(inst);
		},

		/* Pop-up the date picker in a "dialog" box.
		   @param  input     element - ignored
		   @param  date      string or Date - the initial date to display
		   @param  onSelect  function - the function to call when a date is selected
		   @param  settings  object - update the dialog date picker instance's settings (anonymous object)
		   @param  pos       int[2] - coordinates for the dialog's position within the screen or
		                     event - with x/y coordinates or
		                     leave empty for default (screen centre)
		   @return the manager object */
		_dialogDatepicker: function(input, date, onSelect, settings, pos) {
			var inst = this._dialogInst; // internal instance
			if (!inst) {
				var id = 'dp' + (++this.uuid);
				this._dialogInput = $('<input type="text" id="' + id +
					'" style="position: absolute; top: -100px; width: 0px; z-index: -10;"/>');
				this._dialogInput.keydown(this._doKeyDown);
				$('body').append(this._dialogInput);
				inst = this._dialogInst = this._newInst(this._dialogInput, false);
				inst.settings = {};
				$.data(this._dialogInput[0], PROP_NAME, inst);
			}
			extendRemove(inst.settings, settings || {});
			date = (date && date.constructor == Date ? this._formatDate(inst, date) : date);
			this._dialogInput.val(date);

			this._pos = (pos ? (pos.length ? pos : [pos.pageX, pos.pageY]) : null);
			if (!this._pos) {
				var browserWidth = document.documentElement.clientWidth;
				var browserHeight = document.documentElement.clientHeight;
				var scrollX = document.documentElement.scrollLeft || document.body.scrollLeft;
				var scrollY = document.documentElement.scrollTop || document.body.scrollTop;
				this._pos = // should use actual width/height below
					[(browserWidth / 2) - 100 + scrollX, (browserHeight / 2) - 150 + scrollY];
			}

			// move input on screen for focus, but hidden behind dialog
			this._dialogInput.css('left', (this._pos[0] + 20) + 'px').css('top', this._pos[1] + 'px');
			inst.settings.onSelect = onSelect;
			this._inDialog = true;
			this.dpDiv.addClass(this._dialogClass);
			this._showDatepicker(this._dialogInput[0]);
			if ($.blockUI)
				$.blockUI(this.dpDiv);
			$.data(this._dialogInput[0], PROP_NAME, inst);
			return this;
		},

		/* Detach a datepicker from its control.
		   @param  target    element - the target input field or division or span */
		_destroyDatepicker: function(target) {
			var $target = $(target);
			var inst = $.data(target, PROP_NAME);
			if (!$target.hasClass(this.markerClassName)) {
				return;
			}
			var nodeName = target.nodeName.toLowerCase();
			$.removeData(target, PROP_NAME);
			if (nodeName == 'input') {
				inst.append.remove();
				inst.trigger.remove();
				$target.removeClass(this.markerClassName).
					unbind('focus', this._showDatepicker).
					unbind('keydown', this._doKeyDown).
					unbind('keypress', this._doKeyPress).
					unbind('keyup', this._doKeyUp);
			} else if (nodeName == 'div' || nodeName == 'span')
				$target.removeClass(this.markerClassName).empty();
		},

		/* Enable the date picker to a jQuery selection.
		   @param  target    element - the target input field or division or span */
		_enableDatepicker: function(target) {
			var $target = $(target);
			var inst = $.data(target, PROP_NAME);
			if (!$target.hasClass(this.markerClassName)) {
				return;
			}
			var nodeName = target.nodeName.toLowerCase();
			if (nodeName == 'input') {
				target.disabled = false;
				inst.trigger.filter('button').
					each(function() { this.disabled = false; }).end().
					filter('img').css({opacity: '1.0', cursor: ''});
			}
			else if (nodeName == 'div' || nodeName == 'span') {
				var inline = $target.children('.' + this._inlineClass);
				inline.children().removeClass('ui-state-disabled');
			}
			this._disabledInputs = $.map(this._disabledInputs,
				function(value) { return (value == target ? null : value); }); // delete entry
		},

		/* Disable the date picker to a jQuery selection.
		   @param  target    element - the target input field or division or span */
		_disableDatepicker: function(target) {
			var $target = $(target);
			var inst = $.data(target, PROP_NAME);
			if (!$target.hasClass(this.markerClassName)) {
				return;
			}
			var nodeName = target.nodeName.toLowerCase();
			if (nodeName == 'input') {
				target.disabled = true;
				inst.trigger.filter('button').
					each(function() { this.disabled = true; }).end().
					filter('img').css({opacity: '0.5', cursor: 'default'});
			}
			else if (nodeName == 'div' || nodeName == 'span') {
				var inline = $target.children('.' + this._inlineClass);
				inline.children().addClass('ui-state-disabled');
			}
			this._disabledInputs = $.map(this._disabledInputs,
				function(value) { return (value == target ? null : value); }); // delete entry
			this._disabledInputs[this._disabledInputs.length] = target;
		},

		/* Is the first field in a jQuery collection disabled as a datepicker?
		   @param  target    element - the target input field or division or span
		   @return boolean - true if disabled, false if enabled */
		_isDisabledDatepicker: function(target) {
			if (!target) {
				return false;
			}
			for (var i = 0; i < this._disabledInputs.length; i++) {
				if (this._disabledInputs[i] == target)
					return true;
			}
			return false;
		},

		/* Retrieve the instance data for the target control.
		   @param  target  element - the target input field or division or span
		   @return  object - the associated instance data
		   @throws  error if a jQuery problem getting data */
		_getInst: function(target) {
			try {
				return $.data(target, PROP_NAME);
			}
			catch (err) {
				throw 'Missing instance data for this datepicker';
			}
		},

		/* Update or retrieve the settings for a date picker attached to an input field or division.
		   @param  target  element - the target input field or division or span
		   @param  name    object - the new settings to update or
		                   string - the name of the setting to change or retrieve,
		                   when retrieving also 'all' for all instance settings or
		                   'defaults' for all global defaults
		   @param  value   any - the new value for the setting
		                   (omit if above is an object or to retrieve a value) */
		_optionDatepicker: function(target, name, value) {
			var inst = this._getInst(target);
			if (arguments.length == 2 && typeof name == 'string') {
				return (name == 'defaults' ? $.extend({}, $.datepicker._defaults) :
					(inst ? (name == 'all' ? $.extend({}, inst.settings) :
					this._get(inst, name)) : null));
			}
			var settings = name || {};
			if (typeof name == 'string') {
				settings = {};
				settings[name] = value;
			}
			if (inst) {
				if (this._curInst == inst) {
					this._hideDatepicker();
				}
				var date = this._getDateDatepicker(target, true);
				extendRemove(inst.settings, settings);
				this._attachments($(target), inst);
				this._autoSize(inst);
				this._setDateDatepicker(target, date);
				this._updateDatepicker(inst);
			}
		},

		// change method deprecated
		_changeDatepicker: function(target, name, value) {
			this._optionDatepicker(target, name, value);
		},

		/* Redraw the date picker attached to an input field or division.
		   @param  target  element - the target input field or division or span */
		_refreshDatepicker: function(target) {
			var inst = this._getInst(target);
			if (inst) {
				this._updateDatepicker(inst);
			}
		},

		/* Set the dates for a jQuery selection.
		   @param  target   element - the target input field or division or span
		   @param  date     Date - the new date */
		_setDateDatepicker: function(target, date) {
			var inst = this._getInst(target);
			if (inst) {
				this._setDate(inst, date);
				this._updateDatepicker(inst);
				this._updateAlternate(inst);
			}
		},

		/* Get the date(s) for the first entry in a jQuery selection.
		   @param  target     element - the target input field or division or span
		   @param  noDefault  boolean - true if no default date is to be used
		   @return Date - the current date */
		_getDateDatepicker: function(target, noDefault) {
			var inst = this._getInst(target);
			if (inst && !inst.inline)
				this._setDateFromField(inst, noDefault);
			return (inst ? this._getDate(inst) : null);
		},

		/* Handle keystrokes. */
		_doKeyDown: function(event) {
			var inst = $.datepicker._getInst(event.target);
			var handled = true;
			var isRTL = inst.dpDiv.is('.ui-datepicker-rtl');
			inst._keyEvent = true;
			if ($.datepicker._datepickerShowing)
				switch (event.keyCode) {
					case 9: $.datepicker._hideDatepicker();
							handled = false;
							break; // hide on tab out
					case 13: var sel = $('td.' + $.datepicker._dayOverClass, inst.dpDiv).
								add($('td.' + $.datepicker._currentClass, inst.dpDiv));
							if (sel[0])
								$.datepicker._selectDay(event.target, inst.selectedMonth, inst.selectedYear, sel[0]);
							else
								$.datepicker._hideDatepicker();
							return false; // don't submit the form
							break; // select the value on enter
					case 27: $.datepicker._hideDatepicker();
							break; // hide on escape
					case 33: $.datepicker._adjustDate(event.target, (event.ctrlKey ?
								-$.datepicker._get(inst, 'stepBigMonths') :
								-$.datepicker._get(inst, 'stepMonths')), 'M');
							break; // previous month/year on page up/+ ctrl
					case 34: $.datepicker._adjustDate(event.target, (event.ctrlKey ?
								+$.datepicker._get(inst, 'stepBigMonths') :
								+$.datepicker._get(inst, 'stepMonths')), 'M');
							break; // next month/year on page down/+ ctrl
					case 35: if (event.ctrlKey || event.metaKey) $.datepicker._clearDate(event.target);
							handled = event.ctrlKey || event.metaKey;
							break; // clear on ctrl or command +end
					case 36: if (event.ctrlKey || event.metaKey) $.datepicker._gotoToday(event.target);
							handled = event.ctrlKey || event.metaKey;
							break; // current on ctrl or command +home
					case 37: if (event.ctrlKey || event.metaKey) $.datepicker._adjustDate(event.target, (isRTL ? +1 : -1), 'D');
							handled = event.ctrlKey || event.metaKey;
							// -1 day on ctrl or command +left
							if (event.originalEvent.altKey) $.datepicker._adjustDate(event.target, (event.ctrlKey ?
										-$.datepicker._get(inst, 'stepBigMonths') :
										-$.datepicker._get(inst, 'stepMonths')), 'M');
							// next month/year on alt +left on Mac
							break;
					case 38: if (event.ctrlKey || event.metaKey) $.datepicker._adjustDate(event.target, -7, 'D');
							handled = event.ctrlKey || event.metaKey;
							break; // -1 week on ctrl or command +up
					case 39: if (event.ctrlKey || event.metaKey) $.datepicker._adjustDate(event.target, (isRTL ? -1 : +1), 'D');
							handled = event.ctrlKey || event.metaKey;
							// +1 day on ctrl or command +right
							if (event.originalEvent.altKey) $.datepicker._adjustDate(event.target, (event.ctrlKey ?
										+$.datepicker._get(inst, 'stepBigMonths') :
										+$.datepicker._get(inst, 'stepMonths')), 'M');
							// next month/year on alt +right
							break;
					case 40: if (event.ctrlKey || event.metaKey) $.datepicker._adjustDate(event.target, +7, 'D');
							handled = event.ctrlKey || event.metaKey;
							break; // +1 week on ctrl or command +down
					default: handled = false;
				}
			else if (event.keyCode == 36 && event.ctrlKey) // display the date picker on ctrl+home
				$.datepicker._showDatepicker(this);
			else {
				handled = false;
			}
			if (handled) {
				event.preventDefault();
				event.stopPropagation();
			}
		},

		/* Filter entered characters - based on date format. */
		_doKeyPress: function(event) {
			var inst = $.datepicker._getInst(event.target);
			if ($.datepicker._get(inst, 'constrainInput')) {
				var chars = $.datepicker._possibleChars($.datepicker._get(inst, 'dateFormat'));
				var chr = String.fromCharCode(event.charCode == undefined ? event.keyCode : event.charCode);
				return event.ctrlKey || (chr < ' ' || !chars || chars.indexOf(chr) > -1);
			}
		},

		/* Synchronise manual entry and field/alternate field. */
		_doKeyUp: function(event) {
			var inst = $.datepicker._getInst(event.target);
			if (inst.input.val() != inst.lastVal) {
				try {
					var date = $.datepicker.parseDate($.datepicker._get(inst, 'dateFormat'),
						(inst.input ? inst.input.val() : null),
						$.datepicker._getFormatConfig(inst));
					if (date) { // only if valid
						$.datepicker._setDateFromField(inst);
						$.datepicker._updateAlternate(inst);
						$.datepicker._updateDatepicker(inst);
					}
				}
				catch (event) {
					$.datepicker.log(event);
				}
			}
			return true;
		},

		/* Pop-up the date picker for a given input field.
		   @param  input  element - the input field attached to the date picker or
		                  event - if triggered by focus */
		_showDatepicker: function(input) {
			input = input.target || input;
			if (input.nodeName.toLowerCase() != 'input') // find from button/image trigger
				input = $('input', input.parentNode)[0];
			if ($.datepicker._isDisabledDatepicker(input) || $.datepicker._lastInput == input) // already here
				return;
			var inst = $.datepicker._getInst(input);
			if ($.datepicker._curInst && $.datepicker._curInst != inst) {
				$.datepicker._curInst.dpDiv.stop(true, true);
			}
			var beforeShow = $.datepicker._get(inst, 'beforeShow');
			extendRemove(inst.settings, (beforeShow ? beforeShow.apply(input, [input, inst]) : {}));
			inst.lastVal = null;
			$.datepicker._lastInput = input;
			$.datepicker._setDateFromField(inst);
			if ($.datepicker._inDialog) // hide cursor
				input.value = '';
			if (!$.datepicker._pos) { // position below input
				$.datepicker._pos = $.datepicker._findPos(input);
				$.datepicker._pos[1] += input.offsetHeight; // add the height
			}
			var isFixed = false;
			$(input).parents().each(function() {
				isFixed |= $(this).css('position') == 'fixed';
				return !isFixed;
			});
			if (isFixed && $.browser.opera) { // correction for Opera when fixed and scrolled
				$.datepicker._pos[0] -= document.documentElement.scrollLeft;
				$.datepicker._pos[1] -= document.documentElement.scrollTop;
			}
			var offset = {left: $.datepicker._pos[0], top: $.datepicker._pos[1]};
			$.datepicker._pos = null;
			// determine sizing offscreen
			inst.dpDiv.css({position: 'absolute', display: 'block', top: '-1000px'});
			$.datepicker._updateDatepicker(inst);
			// fix width for dynamic number of date pickers
			// and adjust position before showing
			offset = $.datepicker._checkOffset(inst, offset, isFixed);
			inst.dpDiv.css({position: ($.datepicker._inDialog && $.blockUI ?
				'static' : (isFixed ? 'fixed' : 'absolute')), display: 'none',
				left: offset.left + 'px', top: offset.top + 'px'});
			if (!inst.inline) {
				var showAnim = $.datepicker._get(inst, 'showAnim');
				var duration = $.datepicker._get(inst, 'duration');
				var postProcess = function() {
					$.datepicker._datepickerShowing = true;

					var onOpen = $.datepicker._get(inst, 'onOpen');
					if (onOpen)
						onOpen.apply((inst.input ? inst.input[0] : null),
							[(inst.input ? inst.input.val() : ''), inst]);  // trigger custom callback

					var borders = $.datepicker._getBorders(inst.dpDiv);
					inst.dpDiv.find('iframe.ui-datepicker-cover'). // IE6- only
						css({left: -borders[0], top: -borders[1],
							width: inst.dpDiv.outerWidth(), height: inst.dpDiv.outerHeight()});
				};
				inst.dpDiv.zIndex($(input).zIndex()+1);
				if ($.effects && $.effects[showAnim])
					inst.dpDiv.show(showAnim, $.datepicker._get(inst, 'showOptions'), duration, postProcess);
				else
					inst.dpDiv[showAnim || 'show']((showAnim ? duration : null), postProcess);
				if (!showAnim || !duration)
					postProcess();
				if (inst.input.is(':visible') && !inst.input.is(':disabled'))
					inst.input.focus();
				$.datepicker._curInst = inst;
			}
		},

		/* Generate the date picker content. */
		_updateDatepicker: function(inst) {
			var self = this;
			var borders = $.datepicker._getBorders(inst.dpDiv);
			inst.dpDiv.empty().append(this._generateHTML(inst))
				.find('iframe.ui-datepicker-cover') // IE6- only
					.css({left: -borders[0], top: -borders[1],
						width: inst.dpDiv.outerWidth(), height: inst.dpDiv.outerHeight()})
				.end()
				.find('button, .ui-datepicker-prev, .ui-datepicker-next, .ui-datepicker-calendar td a')
					.bind('mouseout', function(){
						$(this).removeClass('ui-state-hover');
						if(this.className.indexOf('ui-datepicker-prev') != -1) $(this).removeClass('ui-datepicker-prev-hover');
						if(this.className.indexOf('ui-datepicker-next') != -1) $(this).removeClass('ui-datepicker-next-hover');
					})
					.bind('mouseover', function(){
						if (!self._isDisabledDatepicker( inst.inline ? inst.dpDiv.parent()[0] : inst.input[0])) {
							$(this).parents('.ui-datepicker-calendar').find('a').removeClass('ui-state-hover');
							$(this).addClass('ui-state-hover');
							if(this.className.indexOf('ui-datepicker-prev') != -1) $(this).addClass('ui-datepicker-prev-hover');
							if(this.className.indexOf('ui-datepicker-next') != -1) $(this).addClass('ui-datepicker-next-hover');
						}
					})
				.end()
				.find('.' + this._dayOverClass + ' a')
					.trigger('mouseover')
				.end();
			var numMonths = this._getNumberOfMonths(inst);
			var cols = numMonths[1];
			var width = 17;
			if (cols > 1)
				inst.dpDiv.addClass('ui-datepicker-multi-' + cols).css('width', (width * cols) + 'em');
			else
				inst.dpDiv.removeClass('ui-datepicker-multi-2 ui-datepicker-multi-3 ui-datepicker-multi-4').width('');
			inst.dpDiv[(numMonths[0] != 1 || numMonths[1] != 1 ? 'add' : 'remove') +
				'Class']('ui-datepicker-multi');
			inst.dpDiv[(this._get(inst, 'isRTL') ? 'add' : 'remove') +
				'Class']('ui-datepicker-rtl');
			if (inst == $.datepicker._curInst && $.datepicker._datepickerShowing && inst.input &&
					inst.input.is(':visible') && !inst.input.is(':disabled'))
				inst.input.focus();
		},

		/* Retrieve the size of left and top borders for an element.
		   @param  elem  (jQuery object) the element of interest
		   @return  (number[2]) the left and top borders */
		_getBorders: function(elem) {
			var convert = function(value) {
				return {thin: 1, medium: 2, thick: 3}[value] || value;
			};
			return [parseFloat(convert(elem.css('border-left-width'))),
				parseFloat(convert(elem.css('border-top-width')))];
		},

		/* Check positioning to remain on screen. */
		_checkOffset: function(inst, offset, isFixed) {
			var dpWidth = inst.dpDiv.outerWidth();
			var dpHeight = inst.dpDiv.outerHeight();
			var inputWidth = inst.input ? inst.input.outerWidth() : 0;
			var inputHeight = inst.input ? inst.input.outerHeight() : 0;
			var viewWidth = document.documentElement.clientWidth + $(document).scrollLeft();
			var viewHeight = document.documentElement.clientHeight + $(document).scrollTop();

			offset.left -= (this._get(inst, 'isRTL') ? (dpWidth - inputWidth) : 0);
			offset.left -= (isFixed && offset.left == inst.input.offset().left) ? $(document).scrollLeft() : 0;
			offset.top -= (isFixed && offset.top == (inst.input.offset().top + inputHeight)) ? $(document).scrollTop() : 0;

			// now check if datepicker is showing outside window viewport - move to a better place if so.
			offset.left -= Math.min(offset.left, (offset.left + dpWidth > viewWidth && viewWidth > dpWidth) ?
				Math.abs(offset.left + dpWidth - viewWidth) : 0);
			offset.top -= Math.min(offset.top, (offset.top + dpHeight > viewHeight && viewHeight > dpHeight) ?
				Math.abs(dpHeight + inputHeight) : 0);

			return offset;
		},

		/* Find an object's position on the screen. */
		_findPos: function(obj) {
			var inst = this._getInst(obj);
			var isRTL = this._get(inst, 'isRTL');
	        while (obj && (obj.type == 'hidden' || obj.nodeType != 1)) {
	            obj = obj[isRTL ? 'previousSibling' : 'nextSibling'];
	        }
	        var position = $(obj).offset();
		    return [position.left, position.top];
		},

		/* Hide the date picker from view.
		   @param  input  element - the input field attached to the date picker */
		_hideDatepicker: function(input) {
			var inst = this._curInst;
			if (!inst || (input && inst != $.data(input, PROP_NAME)))
				return;
			if (this._datepickerShowing) {
				var showAnim = this._get(inst, 'showAnim');
				var duration = this._get(inst, 'duration');
				var postProcess = function() {
					$.datepicker._tidyDialog(inst);
					this._curInst = null;
				};
				if ($.effects && $.effects[showAnim])
					inst.dpDiv.hide(showAnim, $.datepicker._get(inst, 'showOptions'), duration, postProcess);
				else
					inst.dpDiv[(showAnim == 'slideDown' ? 'slideUp' :
						(showAnim == 'fadeIn' ? 'fadeOut' : 'hide'))]((showAnim ? duration : null), postProcess);
				if (!showAnim)
					postProcess();
				var onClose = this._get(inst, 'onClose');
				if (onClose)
					onClose.apply((inst.input ? inst.input[0] : null),
						[(inst.input ? inst.input.val() : ''), inst]);  // trigger custom callback
				this._datepickerShowing = false;
				this._lastInput = null;
				if (this._inDialog) {
					this._dialogInput.css({ position: 'absolute', left: '0', top: '-100px' });
					if ($.blockUI) {
						$.unblockUI();
						$('body').append(this.dpDiv);
					}
				}
				this._inDialog = false;
			}
		},

		/* Tidy up after a dialog display. */
		_tidyDialog: function(inst) {
			inst.dpDiv.removeClass(this._dialogClass).unbind('.ui-datepicker-calendar');
		},

		/* Close date picker if clicked elsewhere. */
		_checkExternalClick: function(event) {
			if (!$.datepicker._curInst)
				return;
			var $target = $(event.target);
			if ($target[0].id != $.datepicker._mainDivId &&
					$target.parents('#' + $.datepicker._mainDivId).length == 0 &&
					!$target.hasClass($.datepicker.markerClassName) &&
					!$target.hasClass($.datepicker._triggerClass) &&
					$.datepicker._datepickerShowing && !($.datepicker._inDialog && $.blockUI))
				$.datepicker._hideDatepicker();
		},

		/* Adjust one of the date sub-fields. */
		_adjustDate: function(id, offset, period) {
			var target = $(id);
			var inst = this._getInst(target[0]);
			if (this._isDisabledDatepicker(target[0])) {
				return;
			}
			this._adjustInstDate(inst, offset +
				(period == 'M' ? this._get(inst, 'showCurrentAtPos') : 0), // undo positioning
				period);
			this._updateDatepicker(inst);
		},

		/* Action for current link. */
		_gotoToday: function(id) {
			var target = $(id);
			var inst = this._getInst(target[0]);
			if (this._get(inst, 'gotoCurrent') && inst.currentDay) {
				inst.selectedDay = inst.currentDay;
				inst.drawMonth = inst.selectedMonth = inst.currentMonth;
				inst.drawYear = inst.selectedYear = inst.currentYear;
			}
			else {
				var date = new Date();
				inst.selectedDay = date.getDate();
				inst.drawMonth = inst.selectedMonth = date.getMonth();
				inst.drawYear = inst.selectedYear = date.getFullYear();
			}
			this._notifyChange(inst);
			this._adjustDate(target);
		},

		/* Action for selecting a new month/year. */
		_selectMonthYear: function(id, select, period) {
			var target = $(id);
			var inst = this._getInst(target[0]);
			inst._selectingMonthYear = false;
			inst['selected' + (period == 'M' ? 'Month' : 'Year')] =
			inst['draw' + (period == 'M' ? 'Month' : 'Year')] =
				parseInt(select.options[select.selectedIndex].value,10);
			this._notifyChange(inst);
			this._adjustDate(target);
		},

		/* Restore input focus after not changing month/year. */
		_clickMonthYear: function(id) {
			var target = $(id);
			var inst = this._getInst(target[0]);
			if (inst.input && inst._selectingMonthYear && !$.browser.msie)
				inst.input.focus();
			inst._selectingMonthYear = !inst._selectingMonthYear;
		},

		/* Action for selecting a day. */
		_selectDay: function(id, month, year, td) {
			var target = $(id);
			if ($(td).hasClass(this._unselectableClass) || this._isDisabledDatepicker(target[0])) {
				return;
			}
			var inst = this._getInst(target[0]);
			inst.selectedDay = inst.currentDay = $('a', td).html();
			inst.selectedMonth = inst.currentMonth = month;
			inst.selectedYear = inst.currentYear = year;
			this._selectDate(id, this._formatDate(inst,
				inst.currentDay, inst.currentMonth, inst.currentYear));
		},

		/* Erase the input field and hide the date picker. */
		_clearDate: function(id) {
			var target = $(id);
			var inst = this._getInst(target[0]);
			this._selectDate(target, '');
		},

		/* Update the input field with the selected date. */
		_selectDate: function(id, dateStr) {
			var target = $(id);
			var inst = this._getInst(target[0]);
			dateStr = (dateStr != null ? dateStr : this._formatDate(inst));
			if (inst.input)
				inst.input.val(dateStr);
			this._updateAlternate(inst);
			var onSelect = this._get(inst, 'onSelect');
			if (onSelect)
				onSelect.apply((inst.input ? inst.input[0] : null), [dateStr, inst]);  // trigger custom callback
			else if (inst.input)
				inst.input.trigger('change'); // fire the change event
			if (inst.inline)
				this._updateDatepicker(inst);
			else {
				this._hideDatepicker();
				this._lastInput = inst.input[0];
				if (typeof(inst.input[0]) != 'object')
					inst.input.focus(); // restore focus
				this._lastInput = null;
			}
		},

		/* Update any alternate field to synchronise with the main field. */
		_updateAlternate: function(inst) {
			var altField = this._get(inst, 'altField');
			if (altField) { // update alternate field too
				var altFormat = this._get(inst, 'altFormat') || this._get(inst, 'dateFormat');
				var date = this._getDate(inst);
				var dateStr = this.formatDate(altFormat, date, this._getFormatConfig(inst));
				$(altField).each(function() { $(this).val(dateStr); });
			}
		},

		/* Set as beforeShowDay function to prevent selection of weekends.
		   @param  date  Date - the date to customise
		   @return [boolean, string] - is this date selectable?, what is its CSS class? */
		noWeekends: function(date) {
			var day = date.getDay();
			return [(day > 0 && day < 6), ''];
		},

		/* Set as calculateWeek to determine the week of the year based on the ISO 8601 definition.
		   @param  date  Date - the date to get the week for
		   @return  number - the number of the week within the year that contains this date */
		iso8601Week: function(date) {
			var checkDate = new Date(date.getTime());
			// Find Thursday of this week starting on Monday
			checkDate.setDate(checkDate.getDate() + 4 - (checkDate.getDay() || 7));
			var time = checkDate.getTime();
			checkDate.setMonth(0); // Compare with Jan 1
			checkDate.setDate(1);
			return Math.floor(Math.round((time - checkDate) / 86400000) / 7) + 1;
		},

		/* Parse a string value into a date object.
		   See formatDate below for the possible formats.

		   @param  format    string - the expected format of the date
		   @param  value     string - the date in the above format
		   @param  settings  Object - attributes include:
		                     shortYearCutoff  number - the cutoff year for determining the century (optional)
		                     dayNamesShort    string[7] - abbreviated names of the days from Sunday (optional)
		                     dayNames         string[7] - names of the days from Sunday (optional)
		                     monthNamesShort  string[12] - abbreviated names of the months (optional)
		                     monthNames       string[12] - names of the months (optional)
		   @return  Date - the extracted date value or null if value is blank */
		parseDate: function (format, value, settings) {
			if (format == null || value == null)
				throw 'Invalid arguments';
			value = (typeof value == 'object' ? value.toString() : value + '');
			if (value == '')
				return null;
			var shortYearCutoff = (settings ? settings.shortYearCutoff : null) || this._defaults.shortYearCutoff;
			var dayNamesShort = (settings ? settings.dayNamesShort : null) || this._defaults.dayNamesShort;
			var dayNames = (settings ? settings.dayNames : null) || this._defaults.dayNames;
			var monthNamesShort = (settings ? settings.monthNamesShort : null) || this._defaults.monthNamesShort;
			var monthNames = (settings ? settings.monthNames : null) || this._defaults.monthNames;
			var year = -1;
			var month = -1;
			var day = -1;
			var doy = -1;
			var literal = false;
			// Check whether a format character is doubled
			var lookAhead = function(match) {
				var matches = (iFormat + 1 < format.length && format.charAt(iFormat + 1) == match);
				if (matches)
					iFormat++;
				return matches;
			};
			// Extract a number from the string value
			var getNumber = function(match) {
				lookAhead(match);
				var size = (match == '@' ? 14 : (match == '!' ? 20 :
					(match == 'y' ? 4 : (match == 'o' ? 3 : 2))));
				var digits = new RegExp('^\\d{1,' + size + '}');
				var num = value.substring(iValue).match(digits);
				if (!num)
					throw 'Missing number at position ' + iValue;
				iValue += num[0].length;
				return parseInt(num[0], 10);
			};
			// Extract a name from the string value and convert to an index
			var getName = function(match, shortNames, longNames) {
				var names = (lookAhead(match) ? longNames : shortNames);
				for (var i = 0; i < names.length; i++) {
					if (value.substr(iValue, names[i].length) == names[i]) {
						iValue += names[i].length;
						return i + 1;
					}
				}
				throw 'Unknown name at position ' + iValue;
			};
			// Confirm that a literal character matches the string value
			var checkLiteral = function() {
				if (value.charAt(iValue) != format.charAt(iFormat))
					throw 'Unexpected literal at position ' + iValue;
				iValue++;
			};
			var iValue = 0;
			for (var iFormat = 0; iFormat < format.length; iFormat++) {
				if (literal)
					if (format.charAt(iFormat) == "'" && !lookAhead("'"))
						literal = false;
					else
						checkLiteral();
				else
					switch (format.charAt(iFormat)) {
						case 'd':
							day = getNumber('d');
							break;
						case 'D':
							getName('D', dayNamesShort, dayNames);
							break;
						case 'o':
							doy = getNumber('o');
							break;
						case 'm':
							month = getNumber('m');
							break;
						case 'M':
							month = getName('M', monthNamesShort, monthNames);
							break;
						case 'y':
							year = getNumber('y');
							break;
						case '@':
							var date = new Date(getNumber('@'));
							year = date.getFullYear();
							month = date.getMonth() + 1;
							day = date.getDate();
							break;
						case '!':
							var date = new Date((getNumber('!') - this._ticksTo1970) / 10000);
							year = date.getFullYear();
							month = date.getMonth() + 1;
							day = date.getDate();
							break;
						case "'":
							if (lookAhead("'"))
								checkLiteral();
							else
								literal = true;
							break;
						default:
							checkLiteral();
					}
			}
			if (year == -1)
				year = new Date().getFullYear();
			else if (year < 100)
				year += new Date().getFullYear() - new Date().getFullYear() % 100 +
					(year <= shortYearCutoff ? 0 : -100);
			if (doy > -1) {
				month = 1;
				day = doy;
				do {
					var dim = this._getDaysInMonth(year, month - 1);
					if (day <= dim)
						break;
					month++;
					day -= dim;
				} while (true);
			}
			var date = this._daylightSavingAdjust(new Date(year, month - 1, day));
			if (date.getFullYear() != year || date.getMonth() + 1 != month || date.getDate() != day)
				throw 'Invalid date'; // E.g. 31/02/*
			return date;
		},

		/* Standard date formats. */
		ATOM: 'yy-mm-dd', // RFC 3339 (ISO 8601)
		COOKIE: 'D, dd M yy',
		ISO_8601: 'yy-mm-dd',
		RFC_822: 'D, d M y',
		RFC_850: 'DD, dd-M-y',
		RFC_1036: 'D, d M y',
		RFC_1123: 'D, d M yy',
		RFC_2822: 'D, d M yy',
		RSS: 'D, d M y', // RFC 822
		TICKS: '!',
		TIMESTAMP: '@',
		W3C: 'yy-mm-dd', // ISO 8601

		_ticksTo1970: (((1970 - 1) * 365 + Math.floor(1970 / 4) - Math.floor(1970 / 100) +
			Math.floor(1970 / 400)) * 24 * 60 * 60 * 10000000),

		/* Format a date object into a string value.
		   The format can be combinations of the following:
		   d  - day of month (no leading zero)
		   dd - day of month (two digit)
		   o  - day of year (no leading zeros)
		   oo - day of year (three digit)
		   D  - day name short
		   DD - day name long
		   m  - month of year (no leading zero)
		   mm - month of year (two digit)
		   M  - month name short
		   MM - month name long
		   y  - year (two digit)
		   yy - year (four digit)
		   @ - Unix timestamp (ms since 01/01/1970)
		   ! - Windows ticks (100ns since 01/01/0001)
		   '...' - literal text
		   '' - single quote

		   @param  format    string - the desired format of the date
		   @param  date      Date - the date value to format
		   @param  settings  Object - attributes include:
		                     dayNamesShort    string[7] - abbreviated names of the days from Sunday (optional)
		                     dayNames         string[7] - names of the days from Sunday (optional)
		                     monthNamesShort  string[12] - abbreviated names of the months (optional)
		                     monthNames       string[12] - names of the months (optional)
		   @return  string - the date in the above format */
		formatDate: function (format, date, settings) {
			if (!date)
				return '';
			var dayNamesShort = (settings ? settings.dayNamesShort : null) || this._defaults.dayNamesShort;
			var dayNames = (settings ? settings.dayNames : null) || this._defaults.dayNames;
			var monthNamesShort = (settings ? settings.monthNamesShort : null) || this._defaults.monthNamesShort;
			var monthNames = (settings ? settings.monthNames : null) || this._defaults.monthNames;
			// Check whether a format character is doubled
			var lookAhead = function(match) {
				var matches = (iFormat + 1 < format.length && format.charAt(iFormat + 1) == match);
				if (matches)
					iFormat++;
				return matches;
			};
			// Format a number, with leading zero if necessary
			var formatNumber = function(match, value, len) {
				var num = '' + value;
				if (lookAhead(match))
					while (num.length < len)
						num = '0' + num;
				return num;
			};
			// Format a name, short or long as requested
			var formatName = function(match, value, shortNames, longNames) {
				return (lookAhead(match) ? longNames[value] : shortNames[value]);
			};
			var output = '';
			var literal = false;
			if (date)
				for (var iFormat = 0; iFormat < format.length; iFormat++) {
					if (literal)
						if (format.charAt(iFormat) == "'" && !lookAhead("'"))
							literal = false;
						else
							output += format.charAt(iFormat);
					else
						switch (format.charAt(iFormat)) {
							case 'd':
								output += formatNumber('d', date.getDate(), 2);
								break;
							case 'D':
								output += formatName('D', date.getDay(), dayNamesShort, dayNames);
								break;
							case 'o':
								output += formatNumber('o',
									(date.getTime() - new Date(date.getFullYear(), 0, 0).getTime()) / 86400000, 3);
								break;
							case 'm':
								output += formatNumber('m', date.getMonth() + 1, 2);
								break;
							case 'M':
								output += formatName('M', date.getMonth(), monthNamesShort, monthNames);
								break;
							case 'y':
								output += (lookAhead('y') ? date.getFullYear() :
									(date.getYear() % 100 < 10 ? '0' : '') + date.getYear() % 100);
								break;
							case '@':
								output += date.getTime();
								break;
							case '!':
								output += date.getTime() * 10000 + this._ticksTo1970;
								break;
							case "'":
								if (lookAhead("'"))
									output += "'";
								else
									literal = true;
								break;
							default:
								output += format.charAt(iFormat);
						}
				}
			return output;
		},

		/* Extract all possible characters from the date format. */
		_possibleChars: function (format) {
			var chars = '';
			var literal = false;
			// Check whether a format character is doubled
			var lookAhead = function(match) {
				var matches = (iFormat + 1 < format.length && format.charAt(iFormat + 1) == match);
				if (matches)
					iFormat++;
				return matches;
			};
			for (var iFormat = 0; iFormat < format.length; iFormat++)
				if (literal)
					if (format.charAt(iFormat) == "'" && !lookAhead("'"))
						literal = false;
					else
						chars += format.charAt(iFormat);
				else
					switch (format.charAt(iFormat)) {
						case 'd': case 'm': case 'y': case '@':
							chars += '0123456789';
							break;
						case 'D': case 'M':
							return null; // Accept anything
						case "'":
							if (lookAhead("'"))
								chars += "'";
							else
								literal = true;
							break;
						default:
							chars += format.charAt(iFormat);
					}
			return chars;
		},

		/* Get a setting value, defaulting if necessary. */
		_get: function(inst, name) {
			return inst.settings[name] !== undefined ?
				inst.settings[name] : this._defaults[name];
		},

		/* Parse existing date and initialise date picker. */
		_setDateFromField: function(inst, noDefault) {
			if (inst.input.val() == inst.lastVal) {
				return;
			}
			var dateFormat = this._get(inst, 'dateFormat');
			var dates = inst.lastVal = inst.input ? inst.input.val() : null;
			var date, defaultDate;
			date = defaultDate = this._getDefaultDate(inst);
			var settings = this._getFormatConfig(inst);
			try {
				date = this.parseDate(dateFormat, dates, settings) || defaultDate;
			} catch (event) {
				this.log(event);
				dates = (noDefault ? '' : dates);
			}
			inst.selectedDay = date.getDate();
			inst.drawMonth = inst.selectedMonth = date.getMonth();
			inst.drawYear = inst.selectedYear = date.getFullYear();
			inst.currentDay = (dates ? date.getDate() : 0);
			inst.currentMonth = (dates ? date.getMonth() : 0);
			inst.currentYear = (dates ? date.getFullYear() : 0);
			this._adjustInstDate(inst);
		},

		/* Retrieve the default date shown on opening. */
		_getDefaultDate: function(inst) {
			return this._restrictMinMax(inst,
				this._determineDate(inst, this._get(inst, 'defaultDate'), new Date()));
		},

		/* A date may be specified as an exact value or a relative one. */
		_determineDate: function(inst, date, defaultDate) {
			var offsetNumeric = function(offset) {
				var date = new Date();
				date.setDate(date.getDate() + offset);
				return date;
			};
			var offsetString = function(offset) {
				try {
					return $.datepicker.parseDate($.datepicker._get(inst, 'dateFormat'),
						offset, $.datepicker._getFormatConfig(inst));
				}
				catch (e) {
					// Ignore
				}
				var date = (offset.toLowerCase().match(/^c/) ?
					$.datepicker._getDate(inst) : null) || new Date();
				var year = date.getFullYear();
				var month = date.getMonth();
				var day = date.getDate();
				var pattern = /([+-]?[0-9]+)\s*(d|D|w|W|m|M|y|Y)?/g;
				var matches = pattern.exec(offset);
				while (matches) {
					switch (matches[2] || 'd') {
						case 'd' : case 'D' :
							day += parseInt(matches[1],10); break;
						case 'w' : case 'W' :
							day += parseInt(matches[1],10) * 7; break;
						case 'm' : case 'M' :
							month += parseInt(matches[1],10);
							day = Math.min(day, $.datepicker._getDaysInMonth(year, month));
							break;
						case 'y': case 'Y' :
							year += parseInt(matches[1],10);
							day = Math.min(day, $.datepicker._getDaysInMonth(year, month));
							break;
					}
					matches = pattern.exec(offset);
				}
				return new Date(year, month, day);
			};
			date = (date == null ? defaultDate : (typeof date == 'string' ? offsetString(date) :
				(typeof date == 'number' ? (isNaN(date) ? defaultDate : offsetNumeric(date)) : date)));
			date = (date && date.toString() == 'Invalid Date' ? defaultDate : date);
			if (date) {
				date.setHours(0);
				date.setMinutes(0);
				date.setSeconds(0);
				date.setMilliseconds(0);
			}
			return this._daylightSavingAdjust(date);
		},

		/* Handle switch to/from daylight saving.
		   Hours may be non-zero on daylight saving cut-over:
		   > 12 when midnight changeover, but then cannot generate
		   midnight datetime, so jump to 1AM, otherwise reset.
		   @param  date  (Date) the date to check
		   @return  (Date) the corrected date */
		_daylightSavingAdjust: function(date) {
			if (!date) return null;
			date.setHours(date.getHours() > 12 ? date.getHours() + 2 : 0);
			return date;
		},

		/* Set the date(s) directly. */
		_setDate: function(inst, date, noChange) {
			var clear = !(date);
			var origMonth = inst.selectedMonth;
			var origYear = inst.selectedYear;
			date = this._restrictMinMax(inst, this._determineDate(inst, date, new Date()));
			inst.selectedDay = inst.currentDay = date.getDate();
			inst.drawMonth = inst.selectedMonth = inst.currentMonth = date.getMonth();
			inst.drawYear = inst.selectedYear = inst.currentYear = date.getFullYear();
			if ((origMonth != inst.selectedMonth || origYear != inst.selectedYear) && !noChange)
				this._notifyChange(inst);
			this._adjustInstDate(inst);
			if (inst.input) {
				inst.input.val(clear ? '' : this._formatDate(inst));
			}
		},

		/* Retrieve the date(s) directly. */
		_getDate: function(inst) {
			var startDate = (!inst.currentYear || (inst.input && inst.input.val() == '') ? null :
				this._daylightSavingAdjust(new Date(
				inst.currentYear, inst.currentMonth, inst.currentDay)));
				return startDate;
		},

		/* Generate the HTML for the current state of the date picker. */
		_generateHTML: function(inst) {
			var today = new Date();
			today = this._daylightSavingAdjust(
				new Date(today.getFullYear(), today.getMonth(), today.getDate())); // clear time
			var isRTL = this._get(inst, 'isRTL');
			var showButtonPanel = this._get(inst, 'showButtonPanel');
			var hideIfNoPrevNext = this._get(inst, 'hideIfNoPrevNext');
			var navigationAsDateFormat = this._get(inst, 'navigationAsDateFormat');
			var numMonths = this._getNumberOfMonths(inst);
			var showCurrentAtPos = this._get(inst, 'showCurrentAtPos');
			var stepMonths = this._get(inst, 'stepMonths');
			var isMultiMonth = (numMonths[0] != 1 || numMonths[1] != 1);
			var currentDate = this._daylightSavingAdjust((!inst.currentDay ? new Date(9999, 9, 9) :
				new Date(inst.currentYear, inst.currentMonth, inst.currentDay)));
			var minDate = this._getMinMaxDate(inst, 'min');
			var maxDate = this._getMinMaxDate(inst, 'max');
			var drawMonth = inst.drawMonth - showCurrentAtPos;
			var drawYear = inst.drawYear;
			if (drawMonth < 0) {
				drawMonth += 12;
				drawYear--;
			}
			if (maxDate) {
				var maxDraw = this._daylightSavingAdjust(new Date(maxDate.getFullYear(),
					maxDate.getMonth() - (numMonths[0] * numMonths[1]) + 1, maxDate.getDate()));
				maxDraw = (minDate && maxDraw < minDate ? minDate : maxDraw);
				while (this._daylightSavingAdjust(new Date(drawYear, drawMonth, 1)) > maxDraw) {
					drawMonth--;
					if (drawMonth < 0) {
						drawMonth = 11;
						drawYear--;
					}
				}
			}
			inst.drawMonth = drawMonth;
			inst.drawYear = drawYear;
			var prevText = this._get(inst, 'prevText');
			prevText = (!navigationAsDateFormat ? prevText : this.formatDate(prevText,
				this._daylightSavingAdjust(new Date(drawYear, drawMonth - stepMonths, 1)),
				this._getFormatConfig(inst)));
			var prev = (this._canAdjustMonth(inst, -1, drawYear, drawMonth) ?
				'<a class="ui-datepicker-prev ui-corner-all" onclick="DP_jQuery_' + dpuuid +
				'.datepicker._adjustDate(\'#' + inst.id + '\', -' + stepMonths + ', \'M\');"' +
				' title="' + prevText + '"><span class="ui-icon ui-icon-circle-triangle-' + ( isRTL ? 'e' : 'w') + '">' + prevText + '</span></a>' :
				(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>'));
			var nextText = this._get(inst, 'nextText');
			nextText = (!navigationAsDateFormat ? nextText : this.formatDate(nextText,
				this._daylightSavingAdjust(new Date(drawYear, drawMonth + stepMonths, 1)),
				this._getFormatConfig(inst)));
			var next = (this._canAdjustMonth(inst, +1, drawYear, drawMonth) ?
				'<a class="ui-datepicker-next ui-corner-all" onclick="DP_jQuery_' + dpuuid +
				'.datepicker._adjustDate(\'#' + inst.id + '\', +' + stepMonths + ', \'M\');"' +
				' title="' + nextText + '"><span class="ui-icon ui-icon-circle-triangle-' + ( isRTL ? 'w' : 'e') + '">' + nextText + '</span></a>' :
				(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>'));
			var currentText = this._get(inst, 'currentText');
			var gotoDate = (this._get(inst, 'gotoCurrent') && inst.currentDay ? currentDate : today);
			currentText = (!navigationAsDateFormat ? currentText :
				this.formatDate(currentText, gotoDate, this._getFormatConfig(inst)));
			var controls = (!inst.inline ? '<button type="button" class="ui-datepicker-close ui-state-default ui-priority-primary ui-corner-all" onclick="DP_jQuery_' + dpuuid +
				'.datepicker._hideDatepicker();">' + this._get(inst, 'closeText') + '</button>' : '');
			var buttonPanel = (showButtonPanel) ? '<div class="ui-datepicker-buttonpane ui-widget-content">' + (isRTL ? controls : '') +
				(this._isInRange(inst, gotoDate) ? '<button type="button" class="ui-datepicker-current ui-state-default ui-priority-secondary ui-corner-all" onclick="DP_jQuery_' + dpuuid +
				'.datepicker._gotoToday(\'#' + inst.id + '\');"' +
				'>' + currentText + '</button>' : '') + (isRTL ? '' : controls) + '</div>' : '';
			var firstDay = parseInt(this._get(inst, 'firstDay'),10);
			firstDay = (isNaN(firstDay) ? 0 : firstDay);
			var showWeek = this._get(inst, 'showWeek');
			var dayNames = this._get(inst, 'dayNames');
			var dayNamesShort = this._get(inst, 'dayNamesShort');
			var dayNamesMin = this._get(inst, 'dayNamesMin');
			var monthNames = this._get(inst, 'monthNames');
			var monthNamesShort = this._get(inst, 'monthNamesShort');
			var beforeShowDay = this._get(inst, 'beforeShowDay');
			var showOtherMonths = this._get(inst, 'showOtherMonths');
			var selectOtherMonths = this._get(inst, 'selectOtherMonths');
			var calculateWeek = this._get(inst, 'calculateWeek') || this.iso8601Week;
			var defaultDate = this._getDefaultDate(inst);
			var html = '';
			for (var row = 0; row < numMonths[0]; row++) {
				var group = '';
				for (var col = 0; col < numMonths[1]; col++) {
					var selectedDate = this._daylightSavingAdjust(new Date(drawYear, drawMonth, inst.selectedDay));
					var cornerClass = ' ui-corner-all';
					var calender = '';
					if (isMultiMonth) {
						calender += '<div class="ui-datepicker-group';
						if (numMonths[1] > 1)
							switch (col) {
								case 0: calender += ' ui-datepicker-group-first';
									cornerClass = ' ui-corner-' + (isRTL ? 'right' : 'left'); break;
								case numMonths[1]-1: calender += ' ui-datepicker-group-last';
									cornerClass = ' ui-corner-' + (isRTL ? 'left' : 'right'); break;
								default: calender += ' ui-datepicker-group-middle'; cornerClass = ''; break;
							}
						calender += '">';
					}
					calender += '<div class="ui-datepicker-header ui-widget-header ui-helper-clearfix' + cornerClass + '">' +
						(/all|left/.test(cornerClass) && row == 0 ? (isRTL ? next : prev) : '') +
						(/all|right/.test(cornerClass) && row == 0 ? (isRTL ? prev : next) : '') +
						this._generateMonthYearHeader(inst, drawMonth, drawYear, minDate, maxDate,
						row > 0 || col > 0, monthNames, monthNamesShort) + // draw month headers
						'</div><table class="ui-datepicker-calendar"><thead>' +
						'<tr>';
					var thead = (showWeek ? '<th class="ui-datepicker-week-col">' + this._get(inst, 'weekHeader') + '</th>' : '');
					for (var dow = 0; dow < 7; dow++) { // days of the week
						var day = (dow + firstDay) % 7;
						thead += '<th' + ((dow + firstDay + 6) % 7 >= 5 ? ' class="ui-datepicker-week-end"' : '') + '>' +
							'<span title="' + dayNames[day] + '">' + dayNamesMin[day] + '</span></th>';
					}
					calender += thead + '</tr></thead><tbody>';
					var daysInMonth = this._getDaysInMonth(drawYear, drawMonth);
					if (drawYear == inst.selectedYear && drawMonth == inst.selectedMonth)
						inst.selectedDay = Math.min(inst.selectedDay, daysInMonth);
					var leadDays = (this._getFirstDayOfMonth(drawYear, drawMonth) - firstDay + 7) % 7;
					var numRows = (isMultiMonth ? 6 : Math.ceil((leadDays + daysInMonth) / 7)); // calculate the number of rows to generate
					var printDate = this._daylightSavingAdjust(new Date(drawYear, drawMonth, 1 - leadDays));
					for (var dRow = 0; dRow < numRows; dRow++) { // create date picker rows
						calender += '<tr>';
						var tbody = (!showWeek ? '' : '<td class="ui-datepicker-week-col">' +
							this._get(inst, 'calculateWeek')(printDate) + '</td>');
						for (var dow = 0; dow < 7; dow++) { // create date picker days
							var daySettings = (beforeShowDay ?
								beforeShowDay.apply((inst.input ? inst.input[0] : null), [printDate]) : [true, '']);
							var otherMonth = (printDate.getMonth() != drawMonth);
							var unselectable = (otherMonth && !selectOtherMonths) || !daySettings[0] ||
								(minDate && printDate < minDate) || (maxDate && printDate > maxDate);
							tbody += '<td class="' +
								((dow + firstDay + 6) % 7 >= 5 ? ' ui-datepicker-week-end' : '') + // highlight weekends
								(otherMonth ? ' ui-datepicker-other-month' : '') + // highlight days from other months
								((printDate.getTime() == selectedDate.getTime() && drawMonth == inst.selectedMonth && inst._keyEvent) || // user pressed key
								(defaultDate.getTime() == printDate.getTime() && defaultDate.getTime() == selectedDate.getTime()) ?
								// or defaultDate is current printedDate and defaultDate is selectedDate
								' ' + this._dayOverClass : '') + // highlight selected day
								(unselectable ? ' ' + this._unselectableClass + ' ui-state-disabled': '') +  // highlight unselectable days
								(otherMonth && !showOtherMonths ? '' : ' ' + daySettings[1] + // highlight custom dates
								(printDate.getTime() == currentDate.getTime() ? ' ' + this._currentClass : '') + // highlight selected day
								(printDate.getTime() == today.getTime() ? ' ui-datepicker-today' : '')) + '"' + // highlight today (if different)
								((!otherMonth || showOtherMonths) && daySettings[2] ? ' title="' + daySettings[2] + '"' : '') + // cell title
								(unselectable ? '' : ' onclick="DP_jQuery_' + dpuuid + '.datepicker._selectDay(\'#' +
								inst.id + '\',' + printDate.getMonth() + ',' + printDate.getFullYear() + ', this);return false;"') + '>' + // actions
								(otherMonth && !showOtherMonths ? '&#xa0;' : // display for other months
								(unselectable ? '<span class="ui-state-default">' + printDate.getDate() + '</span>' : '<a class="ui-state-default' +
								(printDate.getTime() == today.getTime() ? ' ui-state-highlight' : '') +
								(printDate.getTime() == currentDate.getTime() ? ' ui-state-active' : '') + // highlight selected day
								(otherMonth ? ' ui-priority-secondary' : '') + // distinguish dates from other months
								'" href="#">' + printDate.getDate() + '</a>')) + '</td>'; // display selectable date
							printDate.setDate(printDate.getDate() + 1);
							printDate = this._daylightSavingAdjust(printDate);
						}
						calender += tbody + '</tr>';
					}
					drawMonth++;
					if (drawMonth > 11) {
						drawMonth = 0;
						drawYear++;
					}
					calender += '</tbody></table>' + (isMultiMonth ? '</div>' + 
								((numMonths[0] > 0 && col == numMonths[1]-1) ? '<div class="ui-datepicker-row-break"></div>' : '') : '');
					group += calender;
				}
				html += group;
			}
			html += buttonPanel + ($.browser.msie && parseInt($.browser.version,10) < 7 && !inst.inline ?
				'<iframe src="javascript:false;" class="ui-datepicker-cover" frameborder="0"></iframe>' : '');
			inst._keyEvent = false;
			return html;
		},

		/* Generate the month and year header. */
		_generateMonthYearHeader: function(inst, drawMonth, drawYear, minDate, maxDate,
				secondary, monthNames, monthNamesShort) {
			var changeMonth = this._get(inst, 'changeMonth');
			var changeYear = this._get(inst, 'changeYear');
			var showMonthAfterYear = this._get(inst, 'showMonthAfterYear');
			var html = '<div class="ui-datepicker-title">';
			var monthHtml = '';
			// month selection
			if (secondary || !changeMonth)
				monthHtml += '<span class="ui-datepicker-month">' + monthNames[drawMonth] + '</span>';
			else {
				var inMinYear = (minDate && minDate.getFullYear() == drawYear);
				var inMaxYear = (maxDate && maxDate.getFullYear() == drawYear);
				monthHtml += '<select class="ui-datepicker-month" ' +
					'onchange="DP_jQuery_' + dpuuid + '.datepicker._selectMonthYear(\'#' + inst.id + '\', this, \'M\');" ' +
					'onclick="DP_jQuery_' + dpuuid + '.datepicker._clickMonthYear(\'#' + inst.id + '\');"' +
				 	'>';
				for (var month = 0; month < 12; month++) {
					if ((!inMinYear || month >= minDate.getMonth()) &&
							(!inMaxYear || month <= maxDate.getMonth()))
						monthHtml += '<option value="' + month + '"' +
							(month == drawMonth ? ' selected="selected"' : '') +
							'>' + monthNamesShort[month] + '</option>';
				}
				monthHtml += '</select>';
			}
			if (!showMonthAfterYear)
				html += monthHtml + (secondary || !(changeMonth && changeYear) ? '&#xa0;' : '');
			// year selection
			if (secondary || !changeYear)
				html += '<span class="ui-datepicker-year">' + drawYear + '</span>';
			else {
				// determine range of years to display
				var years = this._get(inst, 'yearRange').split(':');
				var thisYear = new Date().getFullYear();
				var determineYear = function(value) {
					var year = (value.match(/c[+-].*/) ? drawYear + parseInt(value.substring(1), 10) :
						(value.match(/[+-].*/) ? thisYear + parseInt(value, 10) :
						parseInt(value, 10)));
					return (isNaN(year) ? thisYear : year);
				};
				var year = determineYear(years[0]);
				var endYear = Math.max(year, determineYear(years[1] || ''));
				year = (minDate ? Math.max(year, minDate.getFullYear()) : year);
				endYear = (maxDate ? Math.min(endYear, maxDate.getFullYear()) : endYear);
				html += '<select class="ui-datepicker-year" ' +
					'onchange="DP_jQuery_' + dpuuid + '.datepicker._selectMonthYear(\'#' + inst.id + '\', this, \'Y\');" ' +
					'onclick="DP_jQuery_' + dpuuid + '.datepicker._clickMonthYear(\'#' + inst.id + '\');"' +
					'>';
				for (; year <= endYear; year++) {
					html += '<option value="' + year + '"' +
						(year == drawYear ? ' selected="selected"' : '') +
						'>' + year + '</option>';
				}
				html += '</select>';
			}
			html += this._get(inst, 'yearSuffix');
			if (showMonthAfterYear)
				html += (secondary || !(changeMonth && changeYear) ? '&#xa0;' : '') + monthHtml;
			html += '</div>'; // Close datepicker_header
			return html;
		},

		/* Adjust one of the date sub-fields. */
		_adjustInstDate: function(inst, offset, period) {
			var year = inst.drawYear + (period == 'Y' ? offset : 0);
			var month = inst.drawMonth + (period == 'M' ? offset : 0);
			var day = Math.min(inst.selectedDay, this._getDaysInMonth(year, month)) +
				(period == 'D' ? offset : 0);
			var date = this._restrictMinMax(inst,
				this._daylightSavingAdjust(new Date(year, month, day)));
			inst.selectedDay = date.getDate();
			inst.drawMonth = inst.selectedMonth = date.getMonth();
			inst.drawYear = inst.selectedYear = date.getFullYear();
			if (period == 'M' || period == 'Y')
				this._notifyChange(inst);
		},

		/* Ensure a date is within any min/max bounds. */
		_restrictMinMax: function(inst, date) {
			var minDate = this._getMinMaxDate(inst, 'min');
			var maxDate = this._getMinMaxDate(inst, 'max');
			date = (minDate && date < minDate ? minDate : date);
			date = (maxDate && date > maxDate ? maxDate : date);
			return date;
		},

		/* Notify change of month/year. */
		_notifyChange: function(inst) {
			var onChange = this._get(inst, 'onChangeMonthYear');
			if (onChange)
				onChange.apply((inst.input ? inst.input[0] : null),
					[inst.selectedYear, inst.selectedMonth + 1, inst]);
		},

		/* Determine the number of months to show. */
		_getNumberOfMonths: function(inst) {
			var numMonths = this._get(inst, 'numberOfMonths');
			return (numMonths == null ? [1, 1] : (typeof numMonths == 'number' ? [1, numMonths] : numMonths));
		},

		/* Determine the current maximum date - ensure no time components are set. */
		_getMinMaxDate: function(inst, minMax) {
			return this._determineDate(inst, this._get(inst, minMax + 'Date'), null);
		},

		/* Find the number of days in a given month. */
		_getDaysInMonth: function(year, month) {
			return 32 - new Date(year, month, 32).getDate();
		},

		/* Find the day of the week of the first of a month. */
		_getFirstDayOfMonth: function(year, month) {
			return new Date(year, month, 1).getDay();
		},

		/* Determines if we should allow a "next/prev" month display change. */
		_canAdjustMonth: function(inst, offset, curYear, curMonth) {
			var numMonths = this._getNumberOfMonths(inst);
			var date = this._daylightSavingAdjust(new Date(curYear,
				curMonth + (offset < 0 ? offset : numMonths[0] * numMonths[1]), 1));
			if (offset < 0)
				date.setDate(this._getDaysInMonth(date.getFullYear(), date.getMonth()));
			return this._isInRange(inst, date);
		},

		/* Is the given date in the accepted range? */
		_isInRange: function(inst, date) {
			var minDate = this._getMinMaxDate(inst, 'min');
			var maxDate = this._getMinMaxDate(inst, 'max');
			return ((!minDate || date.getTime() >= minDate.getTime()) &&
				(!maxDate || date.getTime() <= maxDate.getTime()));
		},

		/* Provide the configuration settings for formatting/parsing. */
		_getFormatConfig: function(inst) {
			var shortYearCutoff = this._get(inst, 'shortYearCutoff');
			shortYearCutoff = (typeof shortYearCutoff != 'string' ? shortYearCutoff :
				new Date().getFullYear() % 100 + parseInt(shortYearCutoff, 10));
			return {shortYearCutoff: shortYearCutoff,
				dayNamesShort: this._get(inst, 'dayNamesShort'), dayNames: this._get(inst, 'dayNames'),
				monthNamesShort: this._get(inst, 'monthNamesShort'), monthNames: this._get(inst, 'monthNames')};
		},

		/* Format the given date for display. */
		_formatDate: function(inst, day, month, year) {
			if (!day) {
				inst.currentDay = inst.selectedDay;
				inst.currentMonth = inst.selectedMonth;
				inst.currentYear = inst.selectedYear;
			}
			var date = (day ? (typeof day == 'object' ? day :
				this._daylightSavingAdjust(new Date(year, month, day))) :
				this._daylightSavingAdjust(new Date(inst.currentYear, inst.currentMonth, inst.currentDay)));
			return this.formatDate(this._get(inst, 'dateFormat'), date, this._getFormatConfig(inst));
		}
	});

	/* jQuery extend now ignores nulls! */
	function extendRemove(target, props) {
		$.extend(target, props);
		for (var name in props)
			if (props[name] == null || props[name] == undefined)
				target[name] = props[name];
		return target;
	};

	/* Determine whether an object is an array. */
	function isArray(a) {
		return (a && (($.browser.safari && typeof a == 'object' && a.length) ||
			(a.constructor && a.constructor.toString().match(/\Array\(\)/))));
	};

	/* Invoke the datepicker functionality.
	   @param  options  string - a command, optionally followed by additional parameters or
	                    Object - settings for attaching new datepicker functionality
	   @return  jQuery object */
	$.fn.datepicker = function(options){

		/* Initialise the date picker. */
		if (!$.datepicker.initialized) {
			$(document).mousedown($.datepicker._checkExternalClick).
				find('body').append($.datepicker.dpDiv);
			$.datepicker.initialized = true;
		}

		var otherArgs = Array.prototype.slice.call(arguments, 1);
		if (typeof options == 'string' && (options == 'isDisabled' || options == 'getDate' || options == 'widget'))
			return $.datepicker['_' + options + 'Datepicker'].
				apply($.datepicker, [this[0]].concat(otherArgs));
		if (options == 'option' && arguments.length == 2 && typeof arguments[1] == 'string')
			return $.datepicker['_' + options + 'Datepicker'].
				apply($.datepicker, [this[0]].concat(otherArgs));
		return this.each(function() {
			typeof options == 'string' ?
				$.datepicker['_' + options + 'Datepicker'].
					apply($.datepicker, [this].concat(otherArgs)) :
				$.datepicker._attachDatepicker(this, options);
		});
	};

	$.datepicker = new Datepicker(); // singleton instance
	$.datepicker.initialized = false;
	$.datepicker.uuid = new Date().getTime();
	$.datepicker.version = "@VERSION";

	// Workaround for #4055
	// Add another global to avoid noConflict issues with inline event handlers
	window['DP_jQuery_' + dpuuid] = $;

	})(jQuery);