(function($){
    
	$.fn.extend({

		renderCalendar  :   function(s)
		{
			var dc = function(a)
			{
				return document.createElement(a);
			};

			s = $.extend({}, $.fn.datePicker.defaults, s);
			
			if (s.showHeader != $.dpConst.SHOW_HEADER_NONE) {
				var headRow = $(dc('tr'));
				for (var i=Date.firstDayOfWeek; i<Date.firstDayOfWeek+7; i++) {
					var weekday = i%7;
					var day = Date.dayNames[weekday];
					headRow.append(
						jQuery(dc('th')).attr({'scope':'col', 'abbr':day, 'title':day, 'class':(weekday == 0 || weekday == 6 ? 'weekend' : 'weekday')}).html(s.showHeader == $.dpConst.SHOW_HEADER_SHORT ? day.substr(0, 1) : day)
					);
				}
			};
			
			var calendarTable = $(dc('table'))
									.attr(
										{
											'cellspacing':2
										}
									)
									.addClass('jCalendar')
									.append(
										(s.showHeader != $.dpConst.SHOW_HEADER_NONE ? 
											$(dc('thead'))
												.append(headRow)
											:
											dc('thead')
										)
									);
			var tbody = $(dc('tbody'));
			
			var today = (new Date()).zeroTime();
			
			var month = s.month == undefined ? today.getMonth() : s.month;
			var year = s.year || today.getFullYear();
			
			var currentDate = new Date(year, month, 1);
			
			
			var firstDayOffset = Date.firstDayOfWeek - currentDate.getDay() + 1;
			if (firstDayOffset > 1) firstDayOffset -= 7;
			var weeksToDraw = Math.ceil(( (-1*firstDayOffset+1) + currentDate.getDaysInMonth() ) /7);
			currentDate.addDays(firstDayOffset-1);
			
			var doHover = function(firstDayInBounds)
			{
				return function()
				{
					if (s.hoverClass) {
						var $this = $(this);
						if (!s.selectWeek) {
							$this.addClass(s.hoverClass);
						} else if (firstDayInBounds && !$this.is('.disabled')) {
							$this.parent().addClass('activeWeekHover');
						}
					}
				}
			};
			var unHover = function()
			{
				if (s.hoverClass) {
					var $this = $(this);
					$this.removeClass(s.hoverClass);
					$this.parent().removeClass('activeWeekHover');
				}
			};

			var w = 0;
			while (w++<weeksToDraw) {
				var r = jQuery(dc('tr'));
				var firstDayInBounds = s.dpController ? currentDate > s.dpController.startDate : false;
				for (var i=0; i<7; i++) {
					var thisMonth = currentDate.getMonth() == month;
					var d = $(dc('td'))
								.text(currentDate.getDate() + '')
								.addClass((thisMonth ? 'current-month ' : 'other-month ') +
													(currentDate.isWeekend() ? 'weekend ' : 'weekday ') +
													(thisMonth && currentDate.getTime() == today.getTime() ? 'today ' : '')
								)
								.data('datePickerDate', currentDate.asString())
								.hover(doHover(firstDayInBounds), unHover)
							;
					r.append(d);
					if (s.renderCallback) {
						s.renderCallback(d, currentDate, month, year);
					}
					// addDays(1) fails in some locales due to daylight savings. See issue 39.
					//currentDate.addDays(1);
					currentDate = new Date(currentDate.getFullYear(), currentDate.getMonth(), currentDate.getDate()+1);
				}
				tbody.append(r);
			}
			calendarTable.append(tbody);
			
			return this.each(
				function()
				{
					$(this).empty().append(calendarTable);
				}
			);
		},
/**
 * Create a datePicker associated with each of the matched elements.

 **/
		datePicker : function(s)
		{			
			if (!$.event._dpCache) $.event._dpCache = [];
			
			// initialise the date picker controller with the relevant settings...
			s = $.extend({}, $.fn.datePicker.defaults, s);
			
			return this.each(
				function()
				{
					var $this = $(this);
					var alreadyExists = true;
					
					if (!this._dpId) {
						this._dpId = $.event.guid++;
						$.event._dpCache[this._dpId] = new DatePicker(this);
						alreadyExists = false;
					}
					
					if (s.inline) {
						s.createButton = false;
						s.displayClose = false;
						s.closeOnSelect = false;
						$this.empty();
					}
					
					var controller = $.event._dpCache[this._dpId];
					
					controller.init(s);
					
					if (!alreadyExists && s.createButton) {
						// create it!
						controller.button = $('<a href="#" class="dp-choose-date" title="' + $.dpText.TEXT_CHOOSE_DATE + '">' + $.dpText.TEXT_CHOOSE_DATE + '</a>')
								.bind(
									'click',
									function()
									{
										$this.dpDisplay(this);
										this.blur();
										return false;
									}
								);
						$this.after(controller.button);
					}
					
					if (!alreadyExists && $this.is(':text')) {
						$this
							.bind(
								'dateSelected',
								function(e, selectedDate, $td)
								{
									this.value = selectedDate.asString();
								}
							).bind(
								'change',
								function()
								{
									if (this.value == '') {
										controller.clearSelected();
									} else {
										var d = Date.fromString(this.value);
										if (d) {
											controller.setSelected(d, true, true);
										}
									}
								}
							);
						if (s.clickInput) {
							$this.bind(
								'click',
								function()
								{
									// The change event doesn't happen until the input loses focus so we need to manually trigger it...
									$this.trigger('change');
									$this.dpDisplay();
								}
							);
						}
						var d = Date.fromString(this.value);
						if (this.value != '' && d) {
							controller.setSelected(d, true, true);
						}
					}
					
					$this.addClass('dp-applied');
					
				}
			)
		},
/**
 * Disables or enables this date picker
 **/
		dpSetStartDate : function(d)
		{
			return _w.call(this, 'setStartDate', d);
		},
/**
 * Updates the last selectable date for any date pickers on any matched elements.
 **/
		dpSetEndDate : function(d)
		{
			return _w.call(this, 'setEndDate', d);
		},
/**
 * Gets a list of Dates currently selected by this datePicker. This will be an empty array if no dates are currently selected or NULL if there is no datePicker associated with the matched element.
 **/
		dpGetSelected : function()
		{
			var c = _getController(this[0]);
			if (c) {
				return c.getSelected();
			}
			return null;
		},
/**
 * Selects or deselects a date on any matched element's date pickers. Deselcting is only useful on date pickers where selectMultiple==true. Selecting will only work if the passed date is within the startDate and endDate boundries for a given date picker.
 **/
		dpSetSelected : function(d, v, m, e)
		{
			if (v == undefined) v=true;
			if (m == undefined) m=true;
			if (e == undefined) e=true;
			return _w.call(this, 'setSelected', Date.fromString(d), v, m, e);
		},
/**
 * Sets the month that will be displayed when the date picker is next opened. If the passed month is before startDate then the month containing startDate will be displayed instead. If the passed month is after endDate then the month containing the endDate will be displayed instead.
 **/
		dpSetDisplayedMonth : function(m, y)
		{
			return _w.call(this, 'setDisplayedMonth', Number(m), Number(y), true);
		},
/**
 * Displays the date picker associated with the matched elements. Since only one date picker can be displayed at once then the date picker associated with the last matched element will be the one that is displayed.
 **/
		dpDisplay : function(e)
		{
			return _w.call(this, 'display', e);
		},
/**
 * Sets a function or array of functions that is called when each TD of the date picker popup is rendered to the page
 **/
		dpSetRenderCallback : function(a)
		{
			return _w.call(this, 'setRenderCallback', a);
		},
/**
 * Sets the position that the datePicker will pop up (relative to it's associated element)
 **/
		dpSetPosition : function(v, h)
		{
			return _w.call(this, 'setPosition', v, h);
		},
/**
 * Sets the offset that the popped up date picker will have from it's default position relative to it's associated element (as set by dpSetPosition)
 **/
		dpSetOffset : function(v, h)
		{
			return _w.call(this, 'setOffset', v, h);
		},
/**
 * Closes the open date picker associated with this element.
 **/
		dpClose : function()
		{
			return _w.call(this, '_closeCalendar', false, this[0]);
		},
		// private function called on unload to clean up any expandos etc and prevent memory links...
		_dpDestroy : function()
		{
			// TODO - implement this?
		}
	});
	
	// private internal function to cut down on the amount of code needed where we forward
	// dp* methods on the jQuery object on to the relevant DatePicker controllers...
	var _w = function(f, a1, a2, a3, a4)
	{
		return this.each(
			function()
			{
				var c = _getController(this);
				if (c) {
					c[f](a1, a2, a3, a4);
				}
			}
		);
	};
	
	function DatePicker(ele)
	{
		this.ele = ele;
		
		// initial values...
		this.displayedMonth		=	null;
		this.displayedYear		=	null;
		this.startDate			=	null;
		this.endDate			=	null;
		this.showYearNavigation	=	null;
		this.closeOnSelect		=	null;
		this.displayClose		=	null;
		this.rememberViewedMonth=	null;
		this.selectMultiple		=	null;
		this.numSelectable		=	null;
		this.numSelected		=	null;
		this.verticalPosition	=	null;
		this.horizontalPosition	=	null;
		this.verticalOffset		=	null;
		this.horizontalOffset	=	null;
		this.button				=	null;
		this.renderCallback		=	[];
		this.selectedDates		=	{};
		this.inline				=	null;
		this.context			=	'#dp-popup';
		this.settings			=	{};
	};
	$.extend(
		DatePicker.prototype,
		{	
			init : function(s)
			{
				this.setStartDate(s.startDate);
				this.setEndDate(s.endDate);
				this.setDisplayedMonth(Number(s.month), Number(s.year));
				this.setRenderCallback(s.renderCallback);
				this.showYearNavigation = s.showYearNavigation;
				this.closeOnSelect = s.closeOnSelect;
				this.displayClose = s.displayClose;
				this.rememberViewedMonth =	s.rememberViewedMonth;
				this.selectMultiple = s.selectMultiple;
				this.numSelectable = s.selectMultiple ? s.numSelectable : 1;
				this.numSelected = 0;
				this.verticalPosition = s.verticalPosition;
				this.horizontalPosition = s.horizontalPosition;
				this.hoverClass = s.hoverClass;
				this.setOffset(s.verticalOffset, s.horizontalOffset);
				this.inline = s.inline;
				this.settings = s;
				if (this.inline) {
					this.context = this.ele;
					this.display();
				}
			},
			setStartDate : function(d)
			{
				if (d) {
					this.startDate = Date.fromString(d);
				}
				if (!this.startDate) {
					this.startDate = (new Date()).zeroTime();
				}
				this.setDisplayedMonth(this.displayedMonth, this.displayedYear);
			},
			setEndDate : function(d)
			{
				if (d) {
					this.endDate = Date.fromString(d);
				}
				if (!this.endDate) {
					this.endDate = (new Date('12/31/2999')); // using the JS Date.parse function which expects mm/dd/yyyy
				}
				if (this.endDate.getTime() < this.startDate.getTime()) {
					this.endDate = this.startDate;
				}
				this.setDisplayedMonth(this.displayedMonth, this.displayedYear);
			},
			setPosition : function(v, h)
			{
				this.verticalPosition = v;
				this.horizontalPosition = h;
			},
			setOffset : function(v, h)
			{
				this.verticalOffset = parseInt(v) || 0;
				this.horizontalOffset = parseInt(h) || 0;
			},
			setDisabled : function(s)
			{
				$e = $(this.ele);
				$e[s ? 'addClass' : 'removeClass']('dp-disabled');
				if (this.button) {
					$but = $(this.button);
					$but[s ? 'addClass' : 'removeClass']('dp-disabled');
					$but.attr('title', s ? '' : $.dpText.TEXT_CHOOSE_DATE);
				}
				if ($e.is(':text')) {
					$e.attr('disabled', s ? 'disabled' : '');
				}
			},
			setDisplayedMonth : function(m, y, rerender)
			{
				if (this.startDate == undefined || this.endDate == undefined) {
					return;
				}
				var s = new Date(this.startDate.getTime());
				s.setDate(1);
				var e = new Date(this.endDate.getTime());
				e.setDate(1);
				
				var t;
				if ((!m && !y) || (isNaN(m) && isNaN(y))) {
					// no month or year passed - default to current month
					t = new Date().zeroTime();
					t.setDate(1);
				} else if (isNaN(m)) {
					// just year passed in - presume we want the displayedMonth
					t = new Date(y, this.displayedMonth, 1);
				} else if (isNaN(y)) {
					// just month passed in - presume we want the displayedYear
					t = new Date(this.displayedYear, m, 1);
				} else {
					// year and month passed in - that's the date we want!
					t = new Date(y, m, 1)
				}
				// check if the desired date is within the range of our defined startDate and endDate
				if (t.getTime() < s.getTime()) {
					t = s;
				} else if (t.getTime() > e.getTime()) {
					t = e;
				}
				var oldMonth = this.displayedMonth;
				var oldYear = this.displayedYear;
				this.displayedMonth = t.getMonth();
				this.displayedYear = t.getFullYear();

				if (rerender && (this.displayedMonth != oldMonth || this.displayedYear != oldYear))
				{
					this._rerenderCalendar();
					$(this.ele).trigger('dpMonthChanged', [this.displayedMonth, this.displayedYear]);
				}
			},
			setSelected : function(d, v, moveToMonth, dispatchEvents)
			{
				if (d < this.startDate || d > this.endDate) {
					// Don't allow people to select dates outside range...
					return;
				}
				var s = this.settings;
				if (s.selectWeek)
				{
					d = d.addDays(- (d.getDay() - Date.firstDayOfWeek + 7) % 7);
					if (d < this.startDate) // The first day of this week is before the start date so is unselectable...
					{
						return;
					}
				}
				if (v == this.isSelected(d)) // this date is already un/selected
				{
					return;
				}
				if (this.selectMultiple == false) {
					this.clearSelected();
				} else if (v && this.numSelected == this.numSelectable) {
					// can't select any more dates...
					return;
				}
				if (moveToMonth && (this.displayedMonth != d.getMonth() || this.displayedYear != d.getFullYear())) {
					this.setDisplayedMonth(d.getMonth(), d.getFullYear(), true);
				}
				this.selectedDates[d.toString()] = v;
				this.numSelected += v ? 1 : -1;
				var selectorString = 'td.' +( d.getMonth() == this.displayedMonth ? 'current-month' : 'other-month');
				var $td;
				$(selectorString, this.context).each(
					function()
					{
						if ($(this).data('datePickerDate') == d.asString()) {
							$td = $(this);
							if (s.selectWeek)
							{
								$td.parent()[v ? 'addClass' : 'removeClass']('selectedWeek');
							}
							$td[v ? 'addClass' : 'removeClass']('selected'); 
						}
					}
				);
				$('td', this.context).not('.selected')[this.selectMultiple &&  this.numSelected == this.numSelectable ? 'addClass' : 'removeClass']('unselectable');
				
				if (dispatchEvents)
				{
					var s = this.isSelected(d);
					$e = $(this.ele);
					var dClone = Date.fromString(d.asString());
					$e.trigger('dateSelected', [dClone, $td, s]);
					$e.trigger('change');
				}
			},
			isSelected : function(d)
			{
				return this.selectedDates[d.toString()];
			},
			getSelected : function()
			{
				var r = [];
				for(s in this.selectedDates) {
					if (this.selectedDates[s] == true) {
						r.push(Date.parse(s));
					}
				}
				return r;
			},
			clearSelected : function()
			{
				this.selectedDates = {};
				this.numSelected = 0;
				$('td.selected', this.context).removeClass('selected').parent().removeClass('selectedWeek');
			},
			display : function(eleAlignTo)
			{
				if ($(this.ele).is('.dp-disabled')) return;
				
				eleAlignTo = eleAlignTo || this.ele;
				var c = this;
				var $ele = $(eleAlignTo);
				var eleOffset = $ele.offset();
				
				var $createIn;
				var attrs;
				var attrsCalendarHolder;
				var cssRules;
				
				if (c.inline) {
					$createIn = $(this.ele);
					attrs = {
						'id'		:	'calendar-' + this.ele._dpId,
						'class'	:	'dp-popup dp-popup-inline'
					};

					$('.dp-popup', $createIn).remove();
					cssRules = {
					};
				} else {
					$createIn = $('body');
					attrs = {
						'id'		:	'dp-popup',
						'class'	:	'dp-popup'
					};
					cssRules = {
						'top'	:	eleOffset.top + c.verticalOffset,
						'left'	:	eleOffset.left + c.horizontalOffset
					};
					
					var _checkMouse = function(e)
					{
						var el = e.target;
						var cal = $('#dp-popup')[0];
						
						while (true){
							if (el == cal) {
								return true;
							} else if (el == document) {
								c._closeCalendar();
								return false;
							} else {
								el = $(el).parent()[0];
							}
						}
					};
					this._checkMouse = _checkMouse;
					
					c._closeCalendar(true);
					$(document).bind(
						'keydown.datepicker', 
						function(event)
						{
							if (event.keyCode == 27) {
								c._closeCalendar();
							}
						}
					);
				}
				
				if (!c.rememberViewedMonth)
				{
					var selectedDate = this.getSelected()[0];
					if (selectedDate) {
						selectedDate = new Date(selectedDate);
						this.setDisplayedMonth(selectedDate.getMonth(), selectedDate.getFullYear(), false);
					}
				}
				
				$createIn
					.append(
						$('<div></div>')
							.attr(attrs)
							.css(cssRules)
							.append(
//								$('<a href="#" class="selecteee">aaa</a>'),
								$('<h2></h2>'),
								$('<div class="dp-nav-prev"></div>')
									.append(
										$('<a class="dp-nav-prev-year" href="#" title="' + $.dpText.TEXT_PREV_YEAR + '">&lt;&lt;</a>')
											.bind(
												'click',
												function()
												{
													return c._displayNewMonth.call(c, this, 0, -1);
												}
											),
										$('<a class="dp-nav-prev-month" href="#" title="' + $.dpText.TEXT_PREV_MONTH + '">&lt;</a>')
											.bind(
												'click',
												function()
												{
													return c._displayNewMonth.call(c, this, -1, 0);
												}
											)
									),
								$('<div class="dp-nav-next"></div>')
									.append(
										$('<a class="dp-nav-next-year" href="#" title="' + $.dpText.TEXT_NEXT_YEAR + '">&gt;&gt;</a>')
											.bind(
												'click',
												function()
												{
													return c._displayNewMonth.call(c, this, 0, 1);
												}
											),
										$('<a class="dp-nav-next-month" href="#" title="' + $.dpText.TEXT_NEXT_MONTH + '">&gt;</a>')
											.bind(
												'click',
												function()
												{
													return c._displayNewMonth.call(c, this, 1, 0);
												}
											)
									),
								$('<div class="dp-calendar"></div>')
							)
							.bgIframe()
						);
					
				var $pop = this.inline ? $('.dp-popup', this.context) : $('#dp-popup');
				
				if (this.showYearNavigation == false) {
					$('.dp-nav-prev-year, .dp-nav-next-year', c.context).css('display', 'none');
				}
				if (this.displayClose) {
					$pop.append(
						$('<a href="#" id="dp-close">' + $.dpText.TEXT_CLOSE + '</a>')
							.bind(
								'click',
								function()
								{
									c._closeCalendar();
									return false;
								}
							)
					);
				}
				c._renderCalendar();

				$(this.ele).trigger('dpDisplayed', $pop);
				
				if (!c.inline) {
					if (this.verticalPosition == $.dpConst.POS_BOTTOM) {
						$pop.css('top', eleOffset.top + $ele.height() - $pop.height() + c.verticalOffset);
					}
					if (this.horizontalPosition == $.dpConst.POS_RIGHT) {
						$pop.css('left', eleOffset.left + $ele.width() - $pop.width() + c.horizontalOffset);
					}
//					$('.selectee', this.context).focus();
					$(document).bind('mousedown.datepicker', this._checkMouse);
				}
				
			},
			setRenderCallback : function(a)
			{
				if (a == null) return;
				if (a && typeof(a) == 'function') {
					a = [a];
				}
				this.renderCallback = this.renderCallback.concat(a);
			},
			cellRender : function ($td, thisDate, month, year) {
				var c = this.dpController;
				var d = new Date(thisDate.getTime());
				
				// add our click handlers to deal with it when the days are clicked...
				
				$td.bind(
					'click',
					function()
					{
						var $this = $(this);
						if (!$this.is('.disabled')) {
							c.setSelected(d, !$this.is('.selected') || !c.selectMultiple, false, true);
							if (c.closeOnSelect) {
								c._closeCalendar();
							}
							// TODO: Instead of this which doesn't work in IE anyway we should find the next focusable element in the document
							// and pass the focus onto that. That would allow the user to continue on the form as expected...
							if (!$.browser.msie)
							{
								$(c.ele).trigger('focus', [$.dpConst.DP_INTERNAL_FOCUS]);
							}
						}
					}
				);
				
				if (c.isSelected(d)) {
					$td.addClass('selected');
					if (c.settings.selectWeek)
					{
						$td.parent().addClass('selectedWeek');
					}
				} else  if (c.selectMultiple && c.numSelected == c.numSelectable) {
					$td.addClass('unselectable');
				}
				
			},
			_applyRenderCallbacks : function()
			{
				var c = this;
				$('td', this.context).each(
					function()
					{
						for (var i=0; i<c.renderCallback.length; i++) {
							$td = $(this);
							c.renderCallback[i].apply(this, [$td, Date.fromString($td.data('datePickerDate')), c.displayedMonth, c.displayedYear]);
						}
					}
				);
				return;
			},
			// ele is the clicked button - only proceed if it doesn't have the class disabled...
			// m and y are -1, 0 or 1 depending which direction we want to go in...
			_displayNewMonth : function(ele, m, y) 
			{
				if (!$(ele).is('.disabled')) {
					this.setDisplayedMonth(this.displayedMonth + m, this.displayedYear + y, true);
				}
				ele.blur();
				return false;
			},
			_rerenderCalendar : function()
			{
				this._clearCalendar();
				this._renderCalendar();
			},
			_renderCalendar : function()
			{
				// set the title...
				$('h2', this.context).html((new Date(this.displayedYear, this.displayedMonth, 1)).asString($.dpText.HEADER_FORMAT));
				
				// render the calendar...
				$('.dp-calendar', this.context).renderCalendar(
					$.extend(
						{},
						this.settings, 
						{
							month			: this.displayedMonth,
							year			: this.displayedYear,
							renderCallback	: this.cellRender,
							dpController	: this,
							hoverClass		: this.hoverClass
						})
				);
				
				// update the status of the control buttons and disable dates before startDate or after endDate...
				// TODO: When should the year buttons be disabled? When you can't go forward a whole year from where you are or is that annoying?
				if (this.displayedYear == this.startDate.getFullYear() && this.displayedMonth == this.startDate.getMonth()) {
					$('.dp-nav-prev-year', this.context).addClass('disabled');
					$('.dp-nav-prev-month', this.context).addClass('disabled');
					$('.dp-calendar td.other-month', this.context).each(
						function()
						{
							var $this = $(this);
							if (Number($this.text()) > 20) {
								$this.addClass('disabled');
							}
						}
					);
					var d = this.startDate.getDate();
					$('.dp-calendar td.current-month', this.context).each(
						function()
						{
							var $this = $(this);
							if (Number($this.text()) < d) {
								$this.addClass('disabled');
							}
						}
					);
				} else {
					$('.dp-nav-prev-year', this.context).removeClass('disabled');
					$('.dp-nav-prev-month', this.context).removeClass('disabled');
					var d = this.startDate.getDate();
					if (d > 20) {
						// check if the startDate is last month as we might need to add some disabled classes...
						var st = this.startDate.getTime();
						var sd = new Date(st);
						sd.addMonths(1);
						if (this.displayedYear == sd.getFullYear() && this.displayedMonth == sd.getMonth()) {
							$('.dp-calendar td.other-month', this.context).each(
								function()
								{
									var $this = $(this);
									if (Date.fromString($this.data('datePickerDate')).getTime() < st) {
										$this.addClass('disabled');
									}
								}
							);
						}
					}
				}
				if (this.displayedYear == this.endDate.getFullYear() && this.displayedMonth == this.endDate.getMonth()) {
					$('.dp-nav-next-year', this.context).addClass('disabled');
					$('.dp-nav-next-month', this.context).addClass('disabled');
					$('.dp-calendar td.other-month', this.context).each(
						function()
						{
							var $this = $(this);
							if (Number($this.text()) < 14) {
								$this.addClass('disabled');
							}
						}
					);
					var d = this.endDate.getDate();
					$('.dp-calendar td.current-month', this.context).each(
						function()
						{
							var $this = $(this);
							if (Number($this.text()) > d) {
								$this.addClass('disabled');
							}
						}
					);
				} else {
					$('.dp-nav-next-year', this.context).removeClass('disabled');
					$('.dp-nav-next-month', this.context).removeClass('disabled');
					var d = this.endDate.getDate();
					if (d < 13) {
						// check if the endDate is next month as we might need to add some disabled classes...
						var ed = new Date(this.endDate.getTime());
						ed.addMonths(-1);
						if (this.displayedYear == ed.getFullYear() && this.displayedMonth == ed.getMonth()) {
							$('.dp-calendar td.other-month', this.context).each(
								function()
								{
									var $this = $(this);
									if (Number($this.text()) > d) {
										$this.addClass('disabled');
									}
								}
							);
						}
					}
				}
				this._applyRenderCallbacks();
			},
			_closeCalendar : function(programatic, ele)
			{
				if (!ele || ele == this.ele)
				{
					$(document).unbind('mousedown.datepicker');
					$(document).unbind('keydown.datepicker');
					this._clearCalendar();
					$('#dp-popup a').unbind();
					$('#dp-popup').empty().remove();
					if (!programatic) {
						$(this.ele).trigger('dpClosed', [this.getSelected()]);
					}
				}
			},
			// empties the current dp-calendar div and makes sure that all events are unbound
			// and expandos removed to avoid memory leaks...
			_clearCalendar : function()
			{
				// TODO.
				$('.dp-calendar td', this.context).unbind();
				$('.dp-calendar', this.context).empty();
			}
		}
	);
	
	// static constants
	$.dpConst = {
		SHOW_HEADER_NONE	:	0,
		SHOW_HEADER_SHORT	:	1,
		SHOW_HEADER_LONG	:	2,
		POS_TOP				:	0,
		POS_BOTTOM			:	1,
		POS_LEFT			:	0,
		POS_RIGHT			:	1,
		DP_INTERNAL_FOCUS	:	'dpInternalFocusTrigger'
	};
	// localisable text
	$.dpText = {
		TEXT_PREV_YEAR		:	'Previous year',
		TEXT_PREV_MONTH		:	'Previous month',
		TEXT_NEXT_YEAR		:	'Next year',
		TEXT_NEXT_MONTH		:	'Next month',
		TEXT_CLOSE			:	'Close',
		TEXT_CHOOSE_DATE	:	'',
		HEADER_FORMAT		:	'mmmm yyyy'
	};
	// version
	$.dpVersion = '$Id: jquery.datePicker.js 70 2009-04-05 19:25:15Z kelvin.luck $';

	$.fn.datePicker.defaults = {
		month				: undefined,
		year				: undefined,
		showHeader			: $.dpConst.SHOW_HEADER_SHORT,
		startDate			: undefined,
		endDate				: undefined,
		inline				: false,
		renderCallback		: null,
		createButton		: true,
		showYearNavigation	: true,
		closeOnSelect		: true,
		displayClose		: false,
		selectMultiple		: false,
		numSelectable		: Number.MAX_VALUE,
		clickInput			: false,
		rememberViewedMonth	: true,
		selectWeek			: false,
		verticalPosition	: $.dpConst.POS_TOP,
		horizontalPosition	: $.dpConst.POS_LEFT,
		verticalOffset		: 0,
		horizontalOffset	: 0,
		hoverClass			: 'dp-hover'
	};

	function _getController(ele)
	{
		if (ele._dpId) return $.event._dpCache[ele._dpId];
		return false;
	};
	
	// make it so that no error is thrown if bgIframe plugin isn't included (allows you to use conditional
	// comments to only include bgIframe where it is needed in IE without breaking this plugin).
	if ($.fn.bgIframe == undefined) {
		$.fn.bgIframe = function() {return this; };
	};


	// clean-up
	$(window)
		.bind('unload', function() {
			var els = $.event._dpCache || [];
			for (var i in els) {
				$(els[i].ele)._dpDestroy();
			}
		});
		
	
})(jQuery);