jquery ui

1 files changed, 1732 insertions, 0 deletions

diff --git a/static/development-bundle/ui/jquery.ui.datepicker.js b/static/development-bundle/ui/jquery.ui.datepicker.js
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+++ b/static/development-bundle/ui/jquery.ui.datepicker.js
@@ -0,0 +1,1732 @@
+/*
+ * jQuery UI Datepicker 1.8.6
+ *
+ * Copyright 2010, AUTHORS.txt (http://jqueryui.com/about)
+ * Dual licensed under the MIT or GPL Version 2 licenses.
+ * http://jquery.org/license
+ *
+ * http://docs.jquery.com/UI/Datepicker
+ *
+ * Depends:
+ *	jquery.ui.core.js
+ */
+(function( $, undefined ) {
+
+$.extend($.ui, { datepicker: { version: "1.8.6" } });
+
+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: 'fast', // 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
+		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) {
+			this.uuid += 1;
+			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) {
+			this.uuid += 1;
+			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 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) {
+			setTimeout(function() {
+				inst.input.focus();
+			}, 0);
+		}
+		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).toLowerCase() == names[i].toLowerCase()) {
+					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 = "1.8.6";
+
+// Workaround for #4055
+// Add another global to avoid noConflict issues with inline event handlers
+window['DP_jQuery_' + dpuuid] = $;
+
+})(jQuery);