/*
 * jQuery UI Datepicker
 *
 * Copyright (c) 2006, 2007, 2008 Marc Grabanski
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 * 
 * http://docs.jquery.com/UI/Datepicker
 *
 * Depends:
 *ui.core.js
 *
 * Marc Grabanski (m@marcgrabanski.com) and Keith Wood (kbwood@virginbroadband.com.au).
 */
   
(function($) { // hide the namespace
var PROP_NAME = 'datepicker';
/* 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._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._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._promptClass = 'ui-datepicker-prompt'; // The name of the dialog prompt 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.regional = []; // Available regional settings, indexed by language code
this.regional[''] = { // Default regional settings
 clearText: 'clear', // Display text for clear link
 clearStatus: 'Erase the current date', // Status text for clear link
 closeText: 'close', // Display text for close link
 closeStatus: 'Close without change', // Status text for close link
 prevText: 'Prev', // Display text for previous month link
 prevStatus: 'Show the previous month', // Status text for previous month link
 nextText: 'Next', // Display text for next month link
 nextStatus: 'Show the next month', // Status text for next month link
 currentText: 'Today', // Display text for current month link
 currentStatus: 'Show the current month', // Status text for current month link
 monthNames: ['Январь','Февраль','Март','Апрель','Май','Июнь','Июль','Август','Сентябрь','Октябрь','Ноябрь','Декабрь'], // Names of months for drop-down and formatting
 //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
 monthStatus: 'Show a different month', // Status text for selecting a month
 yearStatus: 'Show a different year', // Status text for selecting a year
 weekHeader: 'Wk', // Header for the week of the year column
 weekStatus: 'Week of the year', // Status text for the week of the year column
 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
 dayNamesMin: ['Вс','Пн','Вт','Ср','Чт','Пт','Сб'], // Column headings for days starting at Sunday
 dayStatus: 'Set DD as first week day', // Status text for the day of the week selection
 dateStatus: 'Select DD, M d', // Status text for the date selection
 dateFormat: 'yy-mm-dd', // See format options on parseDate
 firstDay: 1, // The first day of the week, Sun = 0, Mon = 1, ...
 initStatus: 'Select a date', // Initial Status text on opening
 isRTL: false // True if right-to-left language, false if left-to-right
};
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: 'show', // 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
 closeAtTop: true, // True to have the clear/close at the top,
 // false to have them at the bottom
 mandatory: false, // True to hide the Clear link, false to include it
 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: true, // True if month can be selected directly, false if only prev/next
 changeYear: true, // True if year can be selected directly, false if only prev/next
 yearRange: '-10:+10', // Range of years to display in drop-down,
 // either relative to current year (-nn:+nn) or absolute (nnnn:nnnn)
 changeFirstDay: true, // True to click on day name to change, false to remain as set
 highlightWeek: false, // True to highlight the selected week
 showOtherMonths: false, // True to show dates in other months, false to leave blank
 showWeeks: false, // True to show week of the year, false to omit
 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
 showStatus: false, // True to show status bar at bottom, false to not show it
 statusForDate: this.dateStatus, // Function to provide status text for a date -
 // takes date and instance as parameters, returns display text
 minDate: null, // The earliest selectable date, or null for no limit
 maxDate: null, // The latest selectable date, or null for no limit
 duration: 'normal', // 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
 stepMonths: 1, // Number of months to step back/forward
 rangeSelect: false, // Allows for selecting a date range on one date picker
 rangeSeparator: ' - ', // Text between two dates in a range
 altField: '', // Selector for an alternate field to store selected dates into
 altFormat: '' // The date format to use for the alternate field
};
$.extend(this._defaults, this.regional['']);
this.dpDiv = $('<div id="' + this._mainDivId + '" style="display: none;"></div>');
}
$.extend(Datepicker.prototype, {
/* Class name added to elements to indicate already configured with a date picker. */
markerClassName: 'hasDatepicker',
/* Debug logging (if enabled). */
log: function () {
	if (this.debug)
	console.log.apply('', arguments);
},
/* Override the default settings for all instances of the date picker. 
   @param  settings  object - the new settings to use as defaults (anonymous object)
   @return the manager object */
setDefaults: function(settings) {
	extendRemove(this._defaults, settings || {});
	return this;
},
/* Attach the date picker to a jQuery selection.
   @param  target    element - the target input field or division or span
   @param  settings  object - the new settings to use for this date picker instance (anonymous) */
_attachDatepicker: function(target, settings) {
	// check for settings on the control itself - in namespace 'date:'
	var inlineSettings = null;
	for (attrName in this._defaults) {
	var attrValue = target.getAttribute('date:' + attrName);
	if (attrValue) {
		inlineSettings = inlineSettings || {};
		try {
		inlineSettings[attrName] = eval(attrValue);
		} catch (err) {
		inlineSettings[attrName] = attrValue;
		}
	}
	}
	var nodeName = target.nodeName.toLowerCase();
	var inline = (nodeName == 'div' || nodeName == 'span');
	if (!target.id)
	target.id = 'dp' + new Date().getTime();
	var inst = this._newInst($(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) {
	return {id: target[0].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="ui-datepicker-inline"></div>'))};
},
/* Attach the date picker to an input field. */
_connectDatepicker: function(target, inst) {
	var input = $(target);
	if (input.hasClass(this.markerClassName))
	return;
	var appendText = this._get(inst, 'appendText');
	var isRTL = this._get(inst, 'isRTL');
	if (appendText)
	input[isRTL ? 'before' : 'after']('<span class="' + this._appendClass + '">' + appendText + '</span>');
	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');
	var 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 : $('<img/>').attr(
		{ src:buttonImage, alt:buttonText, title:buttonText })));
	input[isRTL ? 'before' : 'after'](trigger);
	trigger.click(function() {
		if ($.datepicker._datepickerShowing && $.datepicker._lastInput == target)
		$.datepicker._hideDatepicker();
		else
		$.datepicker._showDatepicker(target);
		return false;
	});
	}
	input.addClass(this.markerClassName).keydown(this._doKeyDown).keypress(this._doKeyPress).
	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);
},
/* Attach an inline date picker to a div. */
_inlineDatepicker: function(target, inst) {
	var input = $(target);
	if (input.hasClass(this.markerClassName))
	return;
	input.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));
	this._updateDatepicker(inst);
},
/* Tidy up after displaying the date picker. */
_inlineShow: function(inst) {
	var numMonths = this._getNumberOfMonths(inst); // fix width for dynamic number of date pickers
	inst.dpDiv.width(numMonths[1] * $('.ui-datepicker', inst.dpDiv[0]).width());
}, 
/* Pop-up the date picker in a "dialog" box.
   @param  input     element - ignored
   @param  dateText  string - the initial date to display (in the current format)
   @param  onSelect  function - the function(dateText) 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, dateText, onSelect, settings, pos) {
	var inst = this._dialogInst; // internal instance
	if (!inst) {
	var id = 'dp' + new Date().getTime();
	this._dialogInput = $('<input type="text" id="' + id +
		'" size="1" style="position: absolute; top: -100px;"/>');
	this._dialogInput.keydown(this._doKeyDown);
	$('body').append(this._dialogInput);
	inst = this._dialogInst = this._newInst(this._dialogInput, false);
	inst.settings = {};
	$.data(this._dialogInput[0], PROP_NAME, inst);
	}
	extendRemove(inst.settings, settings || {});
	this._dialogInput.val(dateText);
	this._pos = (pos ? (pos.length ? pos : [pos.pageX, pos.pageY]) : null);
	if (!this._pos) {
	var browserWidth = window.innerWidth || document.documentElement.clientWidth ||document.body.clientWidth;
	var browserHeight = window.innerHeight || document.documentElement.clientHeight || document.body.clientHeight;
	var scrollX = document.documentElement.scrollLeft || document.body.scrollLeft;
	var scrollY = document.documentElement.scrollTop || document.body.scrollTop;
	this._pos = // should use actual width/height below
		[(browserWidth / 2) - 100 + scrollX, (browserHeight / 2) - 150 + scrollY];
	}
	// move input on screen for focus, but hidden behind dialog
	this._dialogInput.css('left', this._pos[0] + 'px').css('top', this._pos[1] + 'px');
	inst.settings.onSelect = onSelect;
	this._inDialog = true;
	this.dpDiv.addClass(this._dialogClass);
	this._showDatepicker(this._dialogInput[0]);
	if ($.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 nodeName = target.nodeName.toLowerCase();
	var $target = $(target);
	$.removeData(target, PROP_NAME);
	if (nodeName == 'input') {
	$target.siblings('.' + this._appendClass).remove().end().
		siblings('.' + this._triggerClass).remove().end().
		removeClass(this.markerClassName).
		unbind('focus', this._showDatepicker).
		unbind('keydown', this._doKeyDown).
		unbind('keypress', this._doKeyPress);
	} 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) {
	target.disabled = false;
	$(target).siblings('button.' + this._triggerClass).each(function() { this.disabled = false; }).end().
	siblings('img.' + this._triggerClass).css({opacity: '1.0', cursor: ''});
	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) {
	target.disabled = true;
	$(target).siblings('button.' + this._triggerClass).each(function() { this.disabled = true; }).end().
	siblings('img.' + this._triggerClass).css({opacity: '0.5', cursor: 'default'});
	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;
},
/* Update 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
   @param  value   any - the new value for the setting (omit if above is an object) */
_changeDatepicker: function(target, name, value) {
	var settings = name || {};
	if (typeof name == 'string') {
	settings = {};
	settings[name] = value;
	}
	if (inst = $.data(target, PROP_NAME)) {
	extendRemove(inst.settings, settings);
	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
   @param  endDate  Date - the new end date for a range (optional) */
_setDateDatepicker: function(target, date, endDate) {
	var inst = $.data(target, PROP_NAME);
	if (inst) {
	this._setDate(inst, date, endDate);
	this._updateDatepicker(inst);
	}
},
/* Get the date(s) for the first entry in a jQuery selection.
   @param  target  element - the target input field or division or span
   @return Date - the current date or
           Date[2] - the current dates for a range */
_getDateDatepicker: function(target) {
	var inst = $.data(target, PROP_NAME);
	if (inst)
	this._setDateFromField(inst); 
	return (inst ? this._getDate(inst) : null);
},
/* Handle keystrokes. */
_doKeyDown: function(e) {
	var inst = $.data(e.target, PROP_NAME);
	var handled = true;
	if ($.datepicker._datepickerShowing)
	switch (e.keyCode) {
		case 9:  $.datepicker._hideDatepicker(null, '');
			break; // hide on tab out
		case 13: $.datepicker._selectDay(e.target, inst.selectedMonth, inst.selectedYear,
			$('td.ui-datepicker-days-cell-over', inst.dpDiv)[0]);
			return false; // don't submit the form
			break; // select the value on enter
		case 27: $.datepicker._hideDatepicker(null, $.datepicker._get(inst, 'duration'));
			break; // hide on escape
		case 33: $.datepicker._adjustDate(e.target, (e.ctrlKey ? -1 :
			-$.datepicker._get(inst, 'stepMonths')), (e.ctrlKey ? 'Y' : 'M'));
			break; // previous month/year on page up/+ ctrl
		case 34: $.datepicker._adjustDate(e.target, (e.ctrlKey ? +1 :
			+$.datepicker._get(inst, 'stepMonths')), (e.ctrlKey ? 'Y' : 'M'));
			break; // next month/year on page down/+ ctrl
		case 35: if (e.ctrlKey) $.datepicker._clearDate(e.target);
			break; // clear on ctrl+end
		case 36: if (e.ctrlKey) $.datepicker._gotoToday(e.target);
			break; // current on ctrl+home
		case 37: if (e.ctrlKey) $.datepicker._adjustDate(e.target, -1, 'D');
			break; // -1 day on ctrl+left
		case 38: if (e.ctrlKey) $.datepicker._adjustDate(e.target, -7, 'D');
			break; // -1 week on ctrl+up
		case 39: if (e.ctrlKey) $.datepicker._adjustDate(e.target, +1, 'D');
			break; // +1 day on ctrl+right
		case 40: if (e.ctrlKey) $.datepicker._adjustDate(e.target, +7, 'D');
			break; // +1 week on ctrl+down
		default: handled = false;
	}
	else if (e.keyCode == 36 && e.ctrlKey) // display the date picker on ctrl+home
	$.datepicker._showDatepicker(this);
	else
	handled = false;
	if (handled) {
	e.preventDefault();
	e.stopPropagation();
	}
},
/* Filter entered characters - based on date format. */
_doKeyPress: function(e) {
	var inst = $.data(e.target, PROP_NAME);
	var chars = $.datepicker._possibleChars($.datepicker._get(inst, 'dateFormat'));
	var chr = String.fromCharCode(e.charCode == undefined ? e.keyCode : e.charCode);
	return e.ctrlKey || (chr < ' ' || !chars || chars.indexOf(chr) > -1);
},
/* 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 = $.data(input, PROP_NAME);
	var beforeShow = $.datepicker._get(inst, 'beforeShow');
	extendRemove(inst.settings, (beforeShow ? beforeShow.apply(input, [input, inst]) : {}));
	$.datepicker._hideDatepicker(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;
	inst.rangeStart = null;
	// determine sizing offscreen
	inst.dpDiv.css({position: 'absolute', display: 'block', top: '-1000px'});
	$.datepicker._updateDatepicker(inst);
	// fix width for dynamic number of date pickers
	inst.dpDiv.width($.datepicker._getNumberOfMonths(inst)[1] *
	$('.ui-datepicker', inst.dpDiv[0])[0].offsetWidth);
	// 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') || 'show';
	var duration = $.datepicker._get(inst, 'duration');
	var postProcess = function() {
		$.datepicker._datepickerShowing = true;
		if ($.browser.msie && parseInt($.browser.version) < 7) // fix IE < 7 select problems
		$('iframe.ui-datepicker-cover').css({width: inst.dpDiv.width() + 4,
			height: inst.dpDiv.height() + 4});
	};
	if ($.effects && $.effects[showAnim])
		inst.dpDiv.show(showAnim, $.datepicker._get(inst, 'showOptions'), duration, postProcess);
	else
		inst.dpDiv[showAnim](duration, postProcess);
	if (duration == '')
		postProcess();
	if (inst.input[0].type != 'hidden')
		inst.input[0].focus();
	$.datepicker._curInst = inst;
	}
},
/* Generate the date picker content. */
_updateDatepicker: function(inst) {
	var dims = {width: inst.dpDiv.width() + 4,
	height: inst.dpDiv.height() + 4};
	inst.dpDiv.empty().append(this._generateDatepicker(inst)).
	find('iframe.ui-datepicker-cover').
	css({width: dims.width, height: dims.height});
	var numMonths = this._getNumberOfMonths(inst);
	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.input && inst.input[0].type != 'hidden')
	$(inst.input[0]).focus();
},
/* Check positioning to remain on screen. */
_checkOffset: function(inst, offset, isFixed) {
	var pos = inst.input ? this._findPos(inst.input[0]) : null;
	var browserWidth = window.innerWidth || document.documentElement.clientWidth;
	var browserHeight = window.innerHeight || document.documentElement.clientHeight;
	var scrollX = document.documentElement.scrollLeft || document.body.scrollLeft;
	var scrollY = document.documentElement.scrollTop || document.body.scrollTop;
	// reposition date picker horizontally if outside the browser window
	if (this._get(inst, 'isRTL') || (offset.left + inst.dpDiv.width() - scrollX) > browserWidth)
	offset.left = Math.max((isFixed ? 0 : scrollX),
		pos[0] + (inst.input ? inst.input.width() : 0) - (isFixed ? scrollX : 0) - inst.dpDiv.width() -
		(isFixed && $.browser.opera ? document.documentElement.scrollLeft : 0));
	else
	offset.left -= (isFixed ? scrollX : 0);
	// reposition date picker vertically if outside the browser window
	if ((offset.top + inst.dpDiv.height() - scrollY) > browserHeight)
	offset.top = Math.max((isFixed ? 0 : scrollY),
		pos[1] - (isFixed ? scrollY : 0) - (this._inDialog ? 0 : inst.dpDiv.height()) -
		(isFixed && $.browser.opera ? document.documentElement.scrollTop : 0));
	else
	offset.top -= (isFixed ? scrollY : 0);
	return offset;
},
/* Find an object's position on the screen. */
_findPos: function(obj) {
        while (obj && (obj.type == 'hidden' || obj.nodeType != 1)) {
            obj = obj.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
   @param  duration  string - the duration over which to close the date picker */
_hideDatepicker: function(input, duration) {
	var inst = this._curInst;
	if (!inst)
	return;
	var rangeSelect = this._get(inst, 'rangeSelect');
	if (rangeSelect && this._stayOpen)
	this._selectDate('#' + inst.id, this._formatDate(inst,
		inst.currentDay, inst.currentMonth, inst.currentYear));
	this._stayOpen = false;
	if (this._datepickerShowing) {
	duration = (duration != null ? duration : this._get(inst, 'duration'));
	var showAnim = this._get(inst, 'showAnim');
	var postProcess = function() {
		$.datepicker._tidyDialog(inst);
	};
	if (duration != '' && $.effects && $.effects[showAnim])
		inst.dpDiv.hide(showAnim, $.datepicker._get(inst, 'showOptions'),
		duration, postProcess);
	else
		inst.dpDiv[(duration == '' ? 'hide' : (showAnim == 'slideDown' ? 'slideUp' :
		(showAnim == 'fadeIn' ? 'fadeOut' : 'hide')))](duration, postProcess);
	if (duration == '')
		this._tidyDialog(inst);
	var onClose = this._get(inst, 'onClose');
	if (onClose)
		onClose.apply((inst.input ? inst.input[0] : null),
		[this._getDate(inst), inst]);  // trigger custom callback
	this._datepickerShowing = false;
	this._lastInput = null;
	inst.settings.prompt = null;
	if (this._inDialog) {
		this._dialogInput.css({ position: 'absolute', left: '0', top: '-100px' });
		if ($.blockUI) {
		$.unblockUI();
		$('body').append(this.dpDiv);
		}
	}
	this._inDialog = false;
	}
	this._curInst = null;
},
/* Tidy up after a dialog display. */
_tidyDialog: function(inst) {
	inst.dpDiv.removeClass(this._dialogClass).unbind('.ui-datepicker');
	$('.' + this._promptClass, inst.dpDiv).remove();
},
/* Close date picker if clicked elsewhere. */
_checkExternalClick: function(event) {
	if (!$.datepicker._curInst)
	return;
	var $target = $(event.target);
	if (($target.parents('#' + $.datepicker._mainDivId).length == 0) &&
		!$target.hasClass($.datepicker.markerClassName) &&
		!$target.hasClass($.datepicker._triggerClass) &&
		$.datepicker._datepickerShowing && !($.datepicker._inDialog && $.blockUI))
	$.datepicker._hideDatepicker(null, '');
},
/* Adjust one of the date sub-fields. */
_adjustDate: function(id, offset, period) {
	var target = $(id);
	var inst = $.data(target[0], PROP_NAME);
	this._adjustInstDate(inst, offset, period);
	this._updateDatepicker(inst);
},
/* Action for current link. */
_gotoToday: function(id) {
	var target = $(id);
	var inst = $.data(target[0], PROP_NAME);
	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._adjustDate(target);
	this._notifyChange(inst);
},
/* Action for selecting a new month/year. */
_selectMonthYear: function(id, select, period) {
	var target = $(id);
	var inst = $.data(target[0], PROP_NAME);
	inst._selectingMonthYear = false;
	inst[period == 'M' ? 'drawMonth' : 'drawYear'] =
	select.options[select.selectedIndex].value - 0;
	this._adjustDate(target);
	this._notifyChange(inst);
},
/* Restore input focus after not changing month/year. */
_clickMonthYear: function(id) {
	var target = $(id);
	var inst = $.data(target[0], PROP_NAME);
	if (inst.input && inst._selectingMonthYear && !$.browser.msie)
	inst.input[0].focus();
	inst._selectingMonthYear = !inst._selectingMonthYear;
},
/* Action for changing the first week day. */
_changeFirstDay: function(id, day) {
	var target = $(id);
	var inst = $.data(target[0], PROP_NAME);
	inst.settings.firstDay = day;
	this._updateDatepicker(inst);
},
/* Action for selecting a day. */
_selectDay: function(id, month, year, td) {
	if ($(td).hasClass(this._unselectableClass))
	return;
	var target = $(id);
	var inst = $.data(target[0], PROP_NAME);
	var rangeSelect = this._get(inst, 'rangeSelect');
	if (rangeSelect) {
	this._stayOpen = !this._stayOpen;
	if (this._stayOpen) {
		$('.ui-datepicker td').removeClass(this._currentClass);
		$(td).addClass(this._currentClass);
	} 
	}
	inst.selectedDay = inst.currentDay = $('a', td).html();
	inst.selectedMonth = inst.currentMonth = month;
	inst.selectedYear = inst.currentYear = year;
	if (this._stayOpen) {
	inst.endDay = inst.endMonth = inst.endYear = null;
	}
	else if (rangeSelect) {
	inst.endDay = inst.currentDay;
	inst.endMonth = inst.currentMonth;
	inst.endYear = inst.currentYear;
	}
	this._selectDate(id, this._formatDate(inst,
	inst.currentDay, inst.currentMonth, inst.currentYear));
	if (this._stayOpen) {
	inst.rangeStart = new Date(inst.currentYear, inst.currentMonth, inst.currentDay);
	this._updateDatepicker(inst);
	}
	else if (rangeSelect) {
	inst.selectedDay = inst.currentDay = inst.rangeStart.getDate();
	inst.selectedMonth = inst.currentMonth = inst.rangeStart.getMonth();
	inst.selectedYear = inst.currentYear = inst.rangeStart.getFullYear();
	inst.rangeStart = null;
	if (inst.inline)
		this._updateDatepicker(inst);
	}
},
/* Erase the input field and hide the date picker. */
_clearDate: function(id) {
	var target = $(id);
	var inst = $.data(target[0], PROP_NAME);
	if (this._get(inst, 'mandatory'))
	return;
	this._stayOpen = false;
	inst.endDay = inst.endMonth = inst.endYear = inst.rangeStart = null;
	this._selectDate(target, '');
},
/* Update the input field with the selected date. */
_selectDate: function(id, dateStr) {
	var target = $(id);
	var inst = $.data(target[0], PROP_NAME);
	dateStr = (dateStr != null ? dateStr : this._formatDate(inst));
	if (this._get(inst, 'rangeSelect') && dateStr)
	dateStr = (inst.rangeStart ? this._formatDate(inst, inst.rangeStart) :
		dateStr) + this._get(inst, 'rangeSeparator') + dateStr;
	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 if (!this._stayOpen) {
	this._hideDatepicker(null, this._get(inst, 'duration'));
	this._lastInput = inst.input[0];
	if (typeof(inst.input[0]) != 'object')
		inst.input[0].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');
	var date = this._getDate(inst);
	dateStr = (isArray(date) ? (!date[0] && !date[1] ? '' :
		this.formatDate(altFormat, date[0], this._getFormatConfig(inst)) +
		this._get(inst, 'rangeSeparator') + this.formatDate(
		altFormat, date[1] || date[0], this._getFormatConfig(inst))) :
		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.getFullYear(), date.getMonth(), date.getDate(), (date.getTimezoneOffset() / -60));
	var firstMon = new Date(checkDate.getFullYear(), 1 - 1, 4); // First week always contains 4 Jan
	var firstDay = firstMon.getDay() || 7; // Day of week: Mon = 1, ..., Sun = 7
	firstMon.setDate(firstMon.getDate() + 1 - firstDay); // Preceding Monday
	if (firstDay < 4 && checkDate < firstMon) { // Adjust first three days in year if necessary
	checkDate.setDate(checkDate.getDate() - 3); // Generate for previous year
	return $.datepicker.iso8601Week(checkDate);
	} else if (checkDate > new Date(checkDate.getFullYear(), 12 - 1, 28)) { // Check last three days in year
	firstDay = new Date(checkDate.getFullYear() + 1, 1 - 1, 4).getDay() || 7;
	if (firstDay > 4 && (checkDate.getDay() || 7) < firstDay - 3) { // Adjust if necessary
		checkDate.setDate(checkDate.getDate() + 3); // Generate for next year
		return $.datepicker.iso8601Week(checkDate);
	}
	}
	return Math.floor(((checkDate - firstMon) / 86400000) / 7) + 1; // Weeks to given date
},
/* Provide status text for a particular date.
   @param  date  the date to get the status for
   @param  inst  the current datepicker instance
   @return  the status display text for this date */
dateStatus: function(date, inst) {
	return $.datepicker.formatDate($.datepicker._get(inst, 'dateStatus'),
	date, $.datepicker._getFormatConfig(inst));
},
/* 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 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 origSize = (match == '@' ? 14 : (match == 'y' ? 4 : 2));
	var size = origSize;
	var num = 0;
	while (size > 0 && iValue < value.length &&
		value.charAt(iValue) >= '0' && value.charAt(iValue) <= '9') {
		num = num * 10 + (value.charAt(iValue++) - 0);
		size--;
	}
	if (size == origSize)
		throw 'Missing number at position ' + iValue;
	return num;
	};
	// Extract a name from the string value and convert to an index
	var getName = function(match, shortNames, longNames) {
	var names = (lookAhead(match) ? longNames : shortNames);
	var size = 0;
	for (var j = 0; j < names.length; j++)
		size = Math.max(size, names[j].length);
	var name = '';
	var iInit = iValue;
	while (size > 0 && iValue < value.length) {
		name += value.charAt(iValue++);
		for (var i = 0; i < names.length; i++)
		if (name == names[i])
			return i + 1;
		size--;
	}
	throw 'Unknown name at position ' + iInit;
	};
	// 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 '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 "'":
			if (lookAhead("'"))
			checkLiteral();
			else
			literal = true;
			break;
		default:
			checkLiteral();
		}
	}
	if (year < 100)
	year += new Date().getFullYear() - new Date().getFullYear() % 100 +
		(year <= shortYearCutoff ? 0 : -100);
	var date = 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
TIMESTAMP: '@',
W3C: 'yy-mm-dd', // ISO 8601
/* 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)
   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)
   '...' - 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) {
	return (lookAhead(match) && value < 10 ? '0' : '') + value;
	};
	// 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()); 
			break;
			case 'D': 
			output += formatName('D', date.getDay(), dayNamesShort, dayNames);
			break;
			case 'm': 
			output += formatNumber('m', date.getMonth() + 1); 
			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 "'":
			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;
	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) {
	var dateFormat = this._get(inst, 'dateFormat');
	var dates = inst.input ? inst.input.val().split(this._get(inst, 'rangeSeparator')) : null; 
	inst.endDay = inst.endMonth = inst.endYear = null;
	var date = defaultDate = this._getDefaultDate(inst);
	if (dates.length > 0) {
	var settings = this._getFormatConfig(inst);
	if (dates.length > 1) {
		date = this.parseDate(dateFormat, dates[1], settings) || defaultDate;
		inst.endDay = date.getDate();
		inst.endMonth = date.getMonth();
		inst.endYear = date.getFullYear();
	}
	try {
		date = this.parseDate(dateFormat, dates[0], settings) || defaultDate;
	} catch (e) {
		this.log(e);
		date = defaultDate;
	}
	}
	inst.selectedDay = date.getDate();
	inst.drawMonth = inst.selectedMonth = date.getMonth();
	inst.drawYear = inst.selectedYear = date.getFullYear();
	inst.currentDay = (dates[0] ? date.getDate() : 0);
	inst.currentMonth = (dates[0] ? date.getMonth() : 0);
	inst.currentYear = (dates[0] ? date.getFullYear() : 0);
	this._adjustInstDate(inst);
},
/* Retrieve the default date shown on opening. */
_getDefaultDate: function(inst) {
	var date = this._determineDate(this._get(inst, 'defaultDate'), new Date());
	var minDate = this._getMinMaxDate(inst, 'min', true);
	var maxDate = this._getMinMaxDate(inst, 'max');
	date = (minDate && date < minDate ? minDate : date);
	date = (maxDate && date > maxDate ? maxDate : date);
	return date;
},
/* A date may be specified as an exact value or a relative one. */
_determineDate: function(date, defaultDate) {
	var offsetNumeric = function(offset) {
	var date = new Date();
	date.setUTCDate(date.getUTCDate() + offset);
	return date;
	};
	var offsetString = function(offset, getDaysInMonth) {
	var date = 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 += (matches[1] - 0); break;
		case 'w' : case 'W' :
			day += (matches[1] * 7); break;
		case 'm' : case 'M' :
			month += (matches[1] - 0); 
			day = Math.min(day, getDaysInMonth(year, month));
			break;
		case 'y': case 'Y' :
			year += (matches[1] - 0);
			day = Math.min(day, getDaysInMonth(year, month));
			break;
		}
		matches = pattern.exec(offset);
	}
	return new Date(year, month, day);
	};
	return (date == null ? defaultDate :
	(typeof date == 'string' ? offsetString(date, this._getDaysInMonth) :
	(typeof date == 'number' ? offsetNumeric(date) : date)));
},
/* Set the date(s) directly. */
_setDate: function(inst, date, endDate) {
	var clear = !(date);
	date = this._determineDate(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 (this._get(inst, 'rangeSelect')) {
	if (endDate) {
		endDate = this._determineDate(endDate, null);
		inst.endDay = endDate.getDate();
		inst.endMonth = endDate.getMonth();
		inst.endYear = endDate.getFullYear();
	} else {
		inst.endDay = inst.currentDay;
		inst.endMonth = inst.currentMonth;
		inst.endYear = inst.currentYear;
	}
	}
	this._adjustInstDate(inst);
	if (inst.input)
	inst.input.val(clear ? '' : this._formatDate(inst) +
		(!this._get(inst, 'rangeSelect') ? '' : this._get(inst, 'rangeSeparator') +
		this._formatDate(inst, inst.endDay, inst.endMonth, inst.endYear)));
},
/* Retrieve the date(s) directly. */
_getDate: function(inst) {
	var startDate = (!inst.currentYear || (inst.input && inst.input.val() == '') ? null :
	new Date(inst.currentYear, inst.currentMonth, inst.currentDay));
	if (this._get(inst, 'rangeSelect')) {
	return [inst.rangeStart || startDate, (!inst.endYear ? null :
		new Date(inst.endYear, inst.endMonth, inst.endDay))];
	} else
	return startDate;
},
/* Generate the HTML for the current state of the date picker. */
_generateDatepicker: function(inst) {
	var today = new Date();
	today = new Date(today.getFullYear(), today.getMonth(), today.getDate()); // clear time
	var showStatus = this._get(inst, 'showStatus');
	var isRTL = this._get(inst, 'isRTL');
	// build the date picker HTML
	var clear = (this._get(inst, 'mandatory') ? '' :
	'<div class="ui-datepicker-clear"><a onclick="jQuery.datepicker._clearDate(\'#' + inst.id + '\');"' +
	(showStatus ? this._addStatus(inst, this._get(inst, 'clearStatus') || '&#xa0;') : '') + '>' +
	this._get(inst, 'clearText') + '</a></div>');
	var controls = '<div class="ui-datepicker-control">' + (isRTL ? '' : clear) +
	'<div class="ui-datepicker-close"><a onclick="jQuery.datepicker._hideDatepicker();"' +
	(showStatus ? this._addStatus(inst, this._get(inst, 'closeStatus') || '&#xa0;') : '') + '>' +
	this._get(inst, 'closeText') + '</a></div>' + (isRTL ? clear : '')  + '</div>';
	var prompt = this._get(inst, 'prompt');
	var closeAtTop = this._get(inst, 'closeAtTop');
	var hideIfNoPrevNext = this._get(inst, 'hideIfNoPrevNext');
	var navigationAsDateFormat = this._get(inst, 'navigationAsDateFormat');
	var numMonths = this._getNumberOfMonths(inst);
	var stepMonths = this._get(inst, 'stepMonths');
	var isMultiMonth = (numMonths[0] != 1 || numMonths[1] != 1);
	var currentDate = (!inst.currentDay ? new Date(9999, 9, 9) :
	new Date(inst.currentYear, inst.currentMonth, inst.currentDay));
	var minDate = this._getMinMaxDate(inst, 'min', true);
	var maxDate = this._getMinMaxDate(inst, 'max');
	var drawMonth = inst.drawMonth;
	var drawYear = inst.drawYear;
	if (maxDate) {
	var maxDraw = new Date(maxDate.getFullYear(),
		maxDate.getMonth() - numMonths[1] + 1, maxDate.getDate());
	maxDraw = (minDate && maxDraw < minDate ? minDate : maxDraw);
	while (new Date(drawYear, drawMonth, 1) > maxDraw) {
		drawMonth--;
		if (drawMonth < 0) {
		drawMonth = 11;
		drawYear--;
		}
	}
	}
	// controls and links
	var prevText = this._get(inst, 'prevText');
	prevText = (!navigationAsDateFormat ? prevText : this.formatDate(
	prevText, new Date(drawYear, drawMonth - stepMonths, 1), this._getFormatConfig(inst)));
	var prev = '<div class="ui-datepicker-prev">' + (this._canAdjustMonth(inst, -1, drawYear, drawMonth) ? 
	'<a onclick="jQuery.datepicker._adjustDate(\'#' + inst.id + '\', -' + stepMonths + ', \'M\');"' +
	(showStatus ? this._addStatus(inst, this._get(inst, 'prevStatus') || '&#xa0;') : '') + '>' + prevText + '</a>' :
	(hideIfNoPrevNext ? '' : '<label>' + prevText + '</label>')) + '</div>';
	var nextText = this._get(inst, 'nextText');
	nextText = (!navigationAsDateFormat ? nextText : this.formatDate(
	nextText, new Date(drawYear, drawMonth + stepMonths, 1), this._getFormatConfig(inst)));
	var next = '<div class="ui-datepicker-next">' + (this._canAdjustMonth(inst, +1, drawYear, drawMonth) ?
	'<a onclick="jQuery.datepicker._adjustDate(\'#' + inst.id + '\', +' + stepMonths + ', \'M\');"' +
	(showStatus ? this._addStatus(inst, this._get(inst, 'nextStatus') || '&#xa0;') : '') + '>' + nextText + '</a>' :
	(hideIfNoPrevNext ? '' : '<label>' + nextText + '</label>')) + '</div>';
	var currentText = this._get(inst, 'currentText');
	currentText = (!navigationAsDateFormat ? currentText: this.formatDate(
	currentText, today, this._getFormatConfig(inst)));
	var html = (prompt ? '<div class="' + this._promptClass + '">' + prompt + '</div>' : '') +
	(closeAtTop && !inst.inline ? controls : '') +
	'<div class="ui-datepicker-links">' + (isRTL ? next : prev) +
	(this._isInRange(inst, (this._get(inst, 'gotoCurrent') && inst.currentDay ?
	currentDate : today)) ? '<div class="ui-datepicker-current">' +
	'<a onclick="jQuery.datepicker._gotoToday(\'#' + inst.id + '\');"' +
	(showStatus ? this._addStatus(inst, this._get(inst, 'currentStatus') || '&#xa0;') : '') + '>' +
	currentText + '</a></div>' : '') + (isRTL ? prev : next) + '</div>';
	var firstDay = this._get(inst, 'firstDay');
	var changeFirstDay = this._get(inst, 'changeFirstDay');
	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 beforeShowDay = this._get(inst, 'beforeShowDay');
	var highlightWeek = this._get(inst, 'highlightWeek');
	var showOtherMonths = this._get(inst, 'showOtherMonths');
	var showWeeks = this._get(inst, 'showWeeks');
	var calculateWeek = this._get(inst, 'calculateWeek') || this.iso8601Week;
	var status = (showStatus ? this._get(inst, 'dayStatus') || '&#xa0;' : '');
	var dateStatus = this._get(inst, 'statusForDate') || this.dateStatus;
	var endDate = inst.endDay ? new Date(inst.endYear, inst.endMonth, inst.endDay) : currentDate;
	for (var row = 0; row < numMonths[0]; row++)
	for (var col = 0; col < numMonths[1]; col++) {
		var selectedDate = new Date(drawYear, drawMonth, inst.selectedDay);
		html += '<div class="ui-datepicker-one-month' + (col == 0 ? ' ui-datepicker-new-row' : '') + '">' +
		this._generateMonthYearHeader(inst, drawMonth, drawYear, minDate, maxDate,
		selectedDate, row > 0 || col > 0, showStatus, monthNames) + // draw month headers
		'<table class="ui-datepicker" cellpadding="0" cellspacing="0"><thead>' + 
		'<tr class="ui-datepicker-title-row">' +
		(showWeeks ? '<td>' + this._get(inst, 'weekHeader') + '</td>' : '');
		for (var dow = 0; dow < 7; dow++) { // days of the week
		var day = (dow + firstDay) % 7;
		var dayStatus = (status.indexOf('DD') > -1 ? status.replace(/DD/, dayNames[day]) :
			status.replace(/D/, dayNamesShort[day]));
		html += '<td' + ((dow + firstDay + 6) % 7 >= 5 ? ' class="ui-datepicker-week-end-cell"' : '') + '>' +
			(!changeFirstDay ? '<span' :
			'<a onclick="jQuery.datepicker._changeFirstDay(\'#' + inst.id + '\', ' + day + ');"') + 
			(showStatus ? this._addStatus(inst, dayStatus) : '') + ' title="' + dayNames[day] + '">' +
			dayNamesMin[day] + (changeFirstDay ? '</a>' : '</span>') + '</td>';
		}
		html += '</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 printDate = new Date(drawYear, drawMonth, 1 - leadDays);
		var numRows = (isMultiMonth ? 6 : Math.ceil((leadDays + daysInMonth) / 7)); // calculate the number of rows to generate
		for (var dRow = 0; dRow < numRows; dRow++) { // create date picker rows
		html += '<tr class="ui-datepicker-days-row">' +
			(showWeeks ? '<td class="ui-datepicker-week-col">' + 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 || !daySettings[0] ||
			(minDate && printDate < minDate) || (maxDate && printDate > maxDate);
			html += '<td class="ui-datepicker-days-cell' +
			((dow + firstDay + 6) % 7 >= 5 ? ' ui-datepicker-week-end-cell' : '') + // highlight weekends
			(otherMonth ? ' ui-datepicker-otherMonth' : '') + // highlight days from other months
			(printDate.getTime() == selectedDate.getTime() && drawMonth == inst.selectedMonth ?
			' ui-datepicker-days-cell-over' : '') + // highlight selected day
			(unselectable ? ' ' + this._unselectableClass : '') +  // highlight unselectable days
			(otherMonth && !showOtherMonths ? '' : ' ' + daySettings[1] + // highlight custom dates
			(printDate.getTime() >= currentDate.getTime() && printDate.getTime() <= endDate.getTime() ?  // in current range
			' ' + 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 ? (highlightWeek ? ' onmouseover="jQuery(this).parent().addClass(\'ui-datepicker-week-over\');"' + // highlight selection week
			' onmouseout="jQuery(this).parent().removeClass(\'ui-datepicker-week-over\');"' : '') : // unhighlight selection week
			' onmouseover="jQuery(this).addClass(\'ui-datepicker-days-cell-over\')' + // highlight selection
			(highlightWeek ? '.parent().addClass(\'ui-datepicker-week-over\')' : '') + ';' + // highlight selection week
			(!showStatus || (otherMonth && !showOtherMonths) ? '' : 'jQuery(\'#ui-datepicker-status-' +
			inst.id + '\').html(\'' + (dateStatus.apply((inst.input ? inst.input[0] : null),
			[printDate, inst]) || '&#xa0;') +'\');') + '"' +
			' onmouseout="jQuery(this).removeClass(\'ui-datepicker-days-cell-over\')' + // unhighlight selection
			(highlightWeek ? '.parent().removeClass(\'ui-datepicker-week-over\')' : '') + ';' + // unhighlight selection week
			(!showStatus || (otherMonth && !showOtherMonths) ? '' : 'jQuery(\'#ui-datepicker-status-' +
			inst.id + '\').html(\'&#xa0;\');') + '" onclick="jQuery.datepicker._selectDay(\'#' +
			inst.id + '\',' + drawMonth + ',' + drawYear + ', this);"') + '>' + // actions
			(otherMonth ? (showOtherMonths ? printDate.getDate() : '&#xa0;') : // display for other months
			(unselectable ? printDate.getDate() : '<a>' + printDate.getDate() + '</a>')) + '</td>'; // display for this month
			printDate.setUTCDate(printDate.getUTCDate() + 1);
		}
		html += '</tr>';
		}
		drawMonth++;
		if (drawMonth > 11) {
		drawMonth = 0;
		drawYear++;
		}
		html += '</tbody></table></div>';
	}
	html += (showStatus ? '<div style="clear: both;"></div><div id="ui-datepicker-status-' + inst.id + 
	'" class="ui-datepicker-status">' + (this._get(inst, 'initStatus') || '&#xa0;') + '</div>' : '') +
	(!closeAtTop && !inst.inline ? controls : '') +
	'<div style="clear: both;"></div>' + 
	($.browser.msie && parseInt($.browser.version) < 7 && !inst.inline ? 
	'<iframe src="javascript:false;" class="ui-datepicker-cover"></iframe>' : '');
	return html;
},
/* Generate the month and year header. */
_generateMonthYearHeader: function(inst, drawMonth, drawYear, minDate, maxDate,
	selectedDate, secondary, showStatus, monthNames) {
	minDate = (inst.rangeStart && minDate && selectedDate < minDate ? selectedDate : minDate);
	var html = '<div class="ui-datepicker-header">';
	// month selection
	if (secondary || !this._get(inst, 'changeMonth'))
	html += monthNames[drawMonth] + '&#xa0;';
	else {
	var inMinYear = (minDate && minDate.getFullYear() == drawYear);
	var inMaxYear = (maxDate && maxDate.getFullYear() == drawYear);
	html += '<select class="ui-datepicker-new-month" ' +
		'onchange="jQuery.datepicker._selectMonthYear(\'#' + inst.id + '\', this, \'M\');" ' +
		'onclick="jQuery.datepicker._clickMonthYear(\'#' + inst.id + '\');"' +
		(showStatus ? this._addStatus(inst, this._get(inst, 'monthStatus') || '&#xa0;') : '') + '>';
	for (var month = 0; month < 12; month++) {
		if ((!inMinYear || month >= minDate.getMonth()) &&
			(!inMaxYear || month <= maxDate.getMonth()))
		html += '<option value="' + month + '"' +
			(month == drawMonth ? ' selected="selected"' : '') +
			'>' + monthNames[month] + '</option>';
	}
	html += '</select>';
	}
	// year selection
	if (secondary || !this._get(inst, 'changeYear'))
	html += drawYear;
	else {
	// determine range of years to display
	var years = this._get(inst, 'yearRange').split(':');
	var year = 0;
	var endYear = 0;
	if (years.length != 2) {
		year = drawYear - 10;
		endYear = drawYear + 10;
	} else if (years[0].charAt(0) == '+' || years[0].charAt(0) == '-') {
		year = endYear = new Date().getFullYear();
		year += parseInt(years[0], 10);
		endYear += parseInt(years[1], 10);
	} else {
		year = parseInt(years[0], 10);
		endYear = parseInt(years[1], 10);
	}
	year = (minDate ? Math.max(year, minDate.getFullYear()) : year);
	endYear = (maxDate ? Math.min(endYear, maxDate.getFullYear()) : endYear);
	html += '<select class="ui-datepicker-new-year" ' +
		'onchange="jQuery.datepicker._selectMonthYear(\'#' + inst.id + '\', this, \'Y\');" ' +
		'onclick="jQuery.datepicker._clickMonthYear(\'#' + inst.id + '\');"' +
		(showStatus ? this._addStatus(inst, this._get(inst, 'yearStatus') || '&#xa0;') : '') + '>';
	for (; year <= endYear; year++) {
		html += '<option value="' + year + '"' +
		(year == drawYear ? ' selected="selected"' : '') +
		'>' + year + '</option>';
	}
	html += '</select>';
	}
	html += '</div>'; // Close datepicker_header
	return html;
},
/* Provide code to set and clear the status panel. */
_addStatus: function(inst, text) {
	return ' onmouseover="jQuery(\'#ui-datepicker-status-' + inst.id + '\').html(\'' + text + '\');" ' +
	'onmouseout="jQuery(\'#ui-datepicker-status-' + inst.id + '\').html(\'&#xa0;\');"';
},
/* 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 = new Date(year, month, day);
	// ensure it is within the bounds set
	var minDate = this._getMinMaxDate(inst, 'min', true);
	var maxDate = this._getMinMaxDate(inst, 'max');
	date = (minDate && date < minDate ? minDate : date);
	date = (maxDate && date > maxDate ? maxDate : date);
	inst.selectedDay = date.getDate();
	inst.drawMonth = inst.selectedMonth = date.getMonth();
	inst.drawYear = inst.selectedYear = date.getFullYear();
	if (period == 'M' || period == 'Y')
	this._notifyChange(inst);
},
/* Notify change of month/year. */
_notifyChange: function(inst) {
	var onChange = this._get(inst, 'onChangeMonthYear');
	if (onChange)
	onChange.apply((inst.input ? inst.input[0] : null),
		[new Date(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 - may be overridden for a range. */
_getMinMaxDate: function(inst, minMax, checkRange) {
	var date = this._determineDate(this._get(inst, minMax + 'Date'), null);
	if (date) {
	date.setHours(0);
	date.setMinutes(0);
	date.setSeconds(0);
	date.setMilliseconds(0);
	}
	return (!checkRange || !inst.rangeStart ? date :
	(!date || inst.rangeStart > date ? inst.rangeStart : date));
},
/* 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 = new Date(curYear, curMonth + (offset < 0 ? offset : 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) {
	// during range selection, use minimum of selected date and range start
	var newMinDate = (!inst.rangeStart ? null :
	new Date(inst.selectedYear, inst.selectedMonth, inst.selectedDay));
	newMinDate = (newMinDate && inst.rangeStart < newMinDate ? inst.rangeStart : newMinDate);
	var minDate = newMinDate || this._getMinMaxDate(inst, 'min');
	var maxDate = this._getMinMaxDate(inst, 'max');
	return ((!minDate || date >= minDate) && (!maxDate || date <= maxDate));
},
/* 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 : new Date(year, month, day)) :
	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){
var otherArgs = Array.prototype.slice.call(arguments, 1);
if (typeof options == 'string' && (options == 'isDisabled' || options == 'getDate'))
	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
/* Initialise the date picker. */
$(document).ready(function() {
$(document.body).append($.datepicker.dpDiv).
	mousedown($.datepicker._checkExternalClick);
});
})(jQuery);