SUD.widget.DateMath = new function() {

	this.DAY = "D";

	this.WEEK = "W";

	this.YEAR = "Y";
	this.MONTH = "M";

	this.ONE_DAY_MS = 1000*60*60*24;

	this.add = function(date, field, amount) {
		var d = new Date(date.getTime());
		switch (field) {
			case this.MONTH:
				var newMonth = date.getMonth() + amount;
				var years = 0;


				if (newMonth < 0) {
					while (newMonth < 0) {
						newMonth += 12;
						years -= 1;
					}
				} else if (newMonth > 11) {
					while (newMonth > 11) {
						newMonth -= 12;
						years += 1;
					}
				}
				
				d.setMonth(newMonth);
				d.setFullYear(date.getFullYear() + years);
				break;
			case this.DAY:
				d.setDate(date.getDate() + amount);
				break;
			case this.YEAR:
				d.setFullYear(date.getFullYear() + amount);
				break;
			case this.WEEK:
				d.setDate(date.getDate() + (amount * 7));
				break;
		}
		return d;
	};
	this.subtract = function(date, field, amount) {
		return this.add(date, field, (amount*-1));
	};

	this.before = function(date, compareTo) {
		var ms = compareTo.getTime();
		if (date.getTime() < ms) {
			return true;
		} else {
			return false;
		}
	};

	this.after = function(date, compareTo) {
		var ms = compareTo.getTime();
		if (date.getTime() > ms) {
			return true;
		} else {
			return false;
		}
	};

	this.between = function(date, dateBegin, dateEnd) {
		if (this.after(date, dateBegin) && this.before(date, dateEnd)) {
			return true;
		} else {
			return false;
		}
	};
	this.getJan1 = function(calendarYear) {
		return new Date(calendarYear,0,1); 
	};

	this.getDayOffset = function(date, calendarYear) {
		var beginYear = this.getJan1(calendarYear); // Find the start of the year. This will be in week 1.
		
		var dayOffset = Math.ceil((date.getTime()-beginYear.getTime()) / this.ONE_DAY_MS);
		return dayOffset;
	};

	this.getWeekNumber = function(date, calendarYear, weekStartsOn) {
		date.setHours(12,0,0,0);

		if (! weekStartsOn) {
			weekStartsOn = 0;
		}
		if (! calendarYear) {
			calendarYear = date.getFullYear();
		}
		
		var weekNum = -1;
		
		var jan1 = this.getJan1(calendarYear);

		var jan1Offset = jan1.getDay() - weekStartsOn;
		var jan1DayOfWeek = (jan1Offset >= 0 ? jan1Offset : (7 + jan1Offset));

		var endOfWeek1 = this.add(jan1, this.DAY, (6 - jan1DayOfWeek));
		endOfWeek1.setHours(23,59,59,999);

		var month = date.getMonth();
		var day = date.getDate();
		var year = date.getFullYear();
		
		var dayOffset = this.getDayOffset(date, calendarYear); // Days since Jan 1, Calendar Year
			
		if (dayOffset < 0 || this.before(date, endOfWeek1)) {
			weekNum = 1;
		} else {
			weekNum = 2;
			var weekBegin = new Date(endOfWeek1.getTime() + 1);
			var weekEnd = this.add(weekBegin, this.WEEK, 1);

			while (! this.between(date, weekBegin, weekEnd)) {
				weekBegin = this.add(weekBegin, this.WEEK, 1);
				weekEnd = this.add(weekEnd, this.WEEK, 1);
				weekNum += 1;
			}
		}
		
		return weekNum;
	};
	this.isYearOverlapWeek = function(weekBeginDate) {
		var overlaps = false;
		var nextWeek = this.add(weekBeginDate, this.DAY, 6);
		if (nextWeek.getFullYear() != weekBeginDate.getFullYear()) {
			overlaps = true;
		}
		return overlaps;
	};
	this.isMonthOverlapWeek = function(weekBeginDate) {
		var overlaps = false;
		var nextWeek = this.add(weekBeginDate, this.DAY, 6);
		if (nextWeek.getMonth() != weekBeginDate.getMonth()) {
			overlaps = true;
		}
		return overlaps;
	};

	this.findMonthStart = function(date) {
		var start = new Date(date.getFullYear(), date.getMonth(), 1);
		return start;
	};

	this.findMonthEnd = function(date) {
		var start = this.findMonthStart(date);
		var nextMonth = this.add(start, this.MONTH, 1);
		var end = this.subtract(nextMonth, this.DAY, 1);
		return end;
	};

	this.clearTime = function(date) {
		date.setHours(0,0,0,0);
		return date;
	};
}
SUD.widget.Calendar_Core = function(id, containerId, monthyear, selected) {
	if (arguments.length > 0) {
		this.init(id, containerId, monthyear, selected);
	}
}


SUD.widget.Calendar_Core.IMG_ROOT = (window.location.href.toLowerCase().indexOf("https") == 0 );


SUD.widget.Calendar_Core.DATE = "D";


SUD.widget.Calendar_Core.MONTH_DAY = "MD";

SUD.widget.Calendar_Core.WEEKDAY = "WD";


SUD.widget.Calendar_Core.RANGE = "R";


SUD.widget.Calendar_Core.MONTH = "M";


SUD.widget.Calendar_Core.DISPLAY_DAYS = 42;


SUD.widget.Calendar_Core.STOP_RENDER = "S";

SUD.widget.Calendar_Core.prototype = {

	Config : null,


	parent : null,


	index : -1,


	cells : null,


	weekHeaderCells : null,


	weekFooterCells : null,
	

	cellDates : null,


	id : null,


	oDomContainer : null,

	today : null,

	
	renderStack : null,

	_renderStack : null,

	pageDate : null,

	_pageDate : null,
	

	minDate : null,
	
	
	maxDate : null,
	
	
	selectedDates : null,

	
	_selectedDates : null,

	table : null,

	headerCell : null
};



SUD.widget.Calendar_Core.prototype.init = function(id, containerId, monthyear, selected) {
	this.setupConfig();

	this.id = id;

	this.cellDates = new Array();
	
	this.cells = new Array();
	
	this.renderStack = new Array();
	this._renderStack = new Array();

	this.oDomContainer = document.getElementById(containerId);
	
	this.today = new Date();
	SUD.widget.DateMath.clearTime(this.today);

	var month;
	var year;

	if (monthyear) {
		var aMonthYear = monthyear.split(this.Locale.DATE_FIELD_DELIMITER);
		month = parseInt(aMonthYear[this.Locale.MY_MONTH_POSITION-1]);
		year = parseInt(aMonthYear[this.Locale.MY_YEAR_POSITION-1]);
	} else {
		month = this.today.getMonth()+1;
		year = this.today.getFullYear();
	}

	this.pageDate = new Date(year, month-1, 1);
	this._pageDate = new Date(this.pageDate.getTime());

	if (selected) {
		this.selectedDates = this._parseDates(selected);
		this._selectedDates = this.selectedDates.concat();
	} else {
		this.selectedDates = new Array();
		this._selectedDates = new Array();
	}

	this.wireDefaultEvents();
	this.wireCustomEvents();
};



SUD.widget.Calendar_Core.prototype.wireDefaultEvents = function() {

	this.doSelectCell = function(e, cal) {		
		var cell = this;
		var index = cell.index;
		var d = cal.cellDates[index];
		var date = new Date(d[0],d[1]-1,d[2]);
		
		if (! cal.isDateOOM(date) && ! SUD.util.Dom.hasClass(cell, cal.Style.CSS_CELL_RESTRICTED) && ! SUD.util.Dom.hasClass(cell, cal.Style.CSS_CELL_OOB)) {
			if (cal.Options.MULTI_SELECT) {
				var link = cell.getElementsByTagName("A")[0];
				link.blur();
				
				var cellDate = cal.cellDates[index];
				var cellDateIndex = cal._indexOfSelectedFieldArray(cellDate);
				
				if (cellDateIndex > -1) {	
					cal.deselectCell(index);
				} else {
					cal.selectCell(index);
				}	
				
			} else {
				var link = cell.getElementsByTagName("A")[0];
				link.blur()
				cal.selectCell(index);
			}
		}
	}

	this.doCellMouseOver = function(e, cal) {
		var cell = this;
		var index = cell.index;
		var d = cal.cellDates[index];
		var date = new Date(d[0],d[1]-1,d[2]);

		if (! cal.isDateOOM(date) && ! SUD.util.Dom.hasClass(cell, cal.Style.CSS_CELL_RESTRICTED) && ! SUD.util.Dom.hasClass(cell, cal.Style.CSS_CELL_OOB)) {
			SUD.util.Dom.addClass(cell, cal.Style.CSS_CELL_HOVER);
		}
	}


	this.doCellMouseOut = function(e, cal) {
		SUD.util.Dom.removeClass(this, cal.Style.CSS_CELL_HOVER);
	}
	

	this.doNextMonth = function(e, cal) {
		cal.nextMonth();
	}

	
	this.doPreviousMonth = function(e, cal) {
		cal.previousMonth();
	}
}


SUD.widget.Calendar_Core.prototype.wireCustomEvents = function() { }


SUD.widget.Calendar_Core.prototype.setupConfig = function() {
	
	this.Config = new Object();
	
	this.Config.Style = {
		// Style variables
		CSS_ROW_HEADER: "calrowhead",
		CSS_ROW_FOOTER: "calrowfoot",
		CSS_CELL : "calcell",
		CSS_CELL_SELECTED : "selected",
		CSS_CELL_RESTRICTED : "restricted",
		CSS_CELL_TODAY : "today",
		CSS_CELL_OOM : "oom",
		CSS_CELL_OOB : "previous",
		CSS_HEADER : "calheader",
		CSS_HEADER_TEXT : "calhead",
		CSS_WEEKDAY_CELL : "calweekdaycell",
		CSS_WEEKDAY_ROW : "calweekdayrow",
		CSS_FOOTER : "calfoot",
		CSS_CALENDAR : "sud-calendar",
		CSS_CONTAINER : "sud-calcontainer",
		CSS_2UPWRAPPER : "sud-cal2upwrapper", 
		CSS_NAV_LEFT : "calnavleft",
		CSS_NAV_RIGHT : "calnavright",
		CSS_CELL_TOP : "calcelltop",
		CSS_CELL_LEFT : "calcellleft",
		CSS_CELL_RIGHT : "calcellright",
		CSS_CELL_BOTTOM : "calcellbottom",
		CSS_CELL_HOVER : "calcellhover",
		CSS_CELL_HIGHLIGHT1 : "highlight1",
		CSS_CELL_HIGHLIGHT2 : "highlight2",
		CSS_CELL_HIGHLIGHT3 : "highlight3",
		CSS_CELL_HIGHLIGHT4 : "highlight4"
	};

	this.Style = this.Config.Style;

	this.Config.Locale = {
		// Locale definition
		MONTHS_SHORT : ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"],
		MONTHS_LONG : ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"],
		WEEKDAYS_1CHAR : ["S", "M", "T", "W", "T", "F", "S"],
		WEEKDAYS_SHORT : ["Su", "Mo", "Tu", "We", "Th", "Fr", "Sa"],
		WEEKDAYS_MEDIUM : ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"],
		WEEKDAYS_LONG : ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"],
		DATE_DELIMITER : ",",
		DATE_FIELD_DELIMITER : "/",
		DATE_RANGE_DELIMITER : "-",
		MY_MONTH_POSITION : 1,
		MY_YEAR_POSITION : 2,
		MD_MONTH_POSITION : 1,
		MD_DAY_POSITION : 2,
		MDY_MONTH_POSITION : 1,
		MDY_DAY_POSITION : 2,
		MDY_YEAR_POSITION : 3
	};

	this.Locale = this.Config.Locale;

	this.Config.Options = {
		// Configuration variables
		MULTI_SELECT : false,
		SHOW_WEEKDAYS : true,
		START_WEEKDAY : 0,
		SHOW_WEEK_HEADER : false,
		SHOW_WEEK_FOOTER : false,
		HIDE_BLANK_WEEKS : false,
		NAV_ARROW_LEFT : "images/callt.gif",
		NAV_ARROW_RIGHT : "images/calrt.gif"
	};

	this.Options = this.Config.Options;

	this.customConfig();

	if (! this.Options.LOCALE_MONTHS) {
		this.Options.LOCALE_MONTHS=this.Locale.MONTHS_LONG;
	}
	if (! this.Options.LOCALE_WEEKDAYS) {
		this.Options.LOCALE_WEEKDAYS=this.Locale.WEEKDAYS_SHORT;
	}

	// If true, reconfigure weekday arrays to place Mondays first
	if (this.Options.START_WEEKDAY > 0) {
		for (var w=0;w<this.Options.START_WEEKDAY;++w) {
			this.Locale.WEEKDAYS_SHORT.push(this.Locale.WEEKDAYS_SHORT.shift());
			this.Locale.WEEKDAYS_MEDIUM.push(this.Locale.WEEKDAYS_MEDIUM.shift());
			this.Locale.WEEKDAYS_LONG.push(this.Locale.WEEKDAYS_LONG.shift());		
		}
	}
};


SUD.widget.Calendar_Core.prototype.customConfig = function() { };


SUD.widget.Calendar_Core.prototype.buildMonthLabel = function() {
	var text = this.Options.LOCALE_MONTHS[this.pageDate.getMonth()] + " " + this.pageDate.getFullYear();
	return text;
};

SUD.widget.Calendar_Core.prototype.buildDayLabel = function(workingDate) {
	var day = workingDate.getDate();
	return day;
};




SUD.widget.Calendar_Core.prototype.buildShell = function() {
	
	this.table = document.createElement("TABLE");
	this.table.cellSpacing = 0;	
	SUD.widget.Calendar_Core.setCssClasses(this.table, [this.Style.CSS_CALENDAR]);

	this.table.id = this.id;
	
	this.buildShellHeader();
	this.buildShellBody();
	this.buildShellFooter();
	
	SUD.util.Event.addListener(window, "unload", this._unload, this);
};


SUD.widget.Calendar_Core.prototype.buildShellHeader = function() {
	var head = document.createElement("THEAD");
	var headRow = document.createElement("TR");

	var headerCell = document.createElement("TH");
	
	var colSpan = 7;
	if (this.Config.Options.SHOW_WEEK_HEADER) {
		this.weekHeaderCells = new Array();
		colSpan += 1;
	}
	if (this.Config.Options.SHOW_WEEK_FOOTER) {
		this.weekFooterCells = new Array();
		colSpan += 1;
	}	
	
	headerCell.colSpan = colSpan;
	
	SUD.widget.Calendar_Core.setCssClasses(headerCell,[this.Style.CSS_HEADER_TEXT]);

	this.headerCell = headerCell;

	headRow.appendChild(headerCell);
	head.appendChild(headRow);

	if (this.Options.SHOW_WEEKDAYS) {
		var row = document.createElement("TR");
		var fillerCell;

		SUD.widget.Calendar_Core.setCssClasses(row,[this.Style.CSS_WEEKDAY_ROW]);
		
		if (this.Config.Options.SHOW_WEEK_HEADER) {
			fillerCell = document.createElement("TH");
			SUD.widget.Calendar_Core.setCssClasses(fillerCell,[this.Style.CSS_WEEKDAY_CELL]);
			row.appendChild(fillerCell);
		}
		
		for(var i=0;i<this.Options.LOCALE_WEEKDAYS.length;++i) {
			var cell = document.createElement("TH");
			SUD.widget.Calendar_Core.setCssClasses(cell,[this.Style.CSS_WEEKDAY_CELL]);
			cell.innerHTML=this.Options.LOCALE_WEEKDAYS[i];
			row.appendChild(cell);
		}

		if (this.Config.Options.SHOW_WEEK_FOOTER) {
			fillerCell = document.createElement("TH");
			SUD.widget.Calendar_Core.setCssClasses(fillerCell,[this.Style.CSS_WEEKDAY_CELL]);
			row.appendChild(fillerCell);
		}
				
		head.appendChild(row);
	}

	this.table.appendChild(head);
};

SUD.widget.Calendar_Core.prototype.buildShellBody = function() {
	// This should only get executed once
	this.tbody = document.createElement("TBODY");

	for (var r=0;r<6;++r) {
		var row = document.createElement("TR");
		
		for (var c=0;c<this.headerCell.colSpan;++c) {
			var cell;
			if (this.Config.Options.SHOW_WEEK_HEADER && c===0) { // Row header
				cell = document.createElement("TH");
				this.weekHeaderCells[this.weekHeaderCells.length] = cell;
			} else if (this.Config.Options.SHOW_WEEK_FOOTER && c==(this.headerCell.colSpan-1)){ // Row footer
				cell = document.createElement("TH");
				this.weekFooterCells[this.weekFooterCells.length] = cell;
			} else {
				cell = document.createElement("TD");
				this.cells[this.cells.length] = cell;
				SUD.widget.Calendar_Core.setCssClasses(cell, [this.Style.CSS_CELL]);
				SUD.util.Event.addListener(cell, "click", this.doSelectCell, this);

				SUD.util.Event.addListener(cell, "mouseover", this.doCellMouseOver, this);
				SUD.util.Event.addListener(cell, "mouseout", this.doCellMouseOut, this);
			}
			row.appendChild(cell);
		}
		this.tbody.appendChild(row);
	}
	
	this.table.appendChild(this.tbody);
};


SUD.widget.Calendar_Core.prototype.buildShellFooter = function() { };


SUD.widget.Calendar_Core.prototype.renderShell = function() {
	this.oDomContainer.appendChild(this.table);
	this.shellRendered = true;
};

SUD.widget.Calendar_Core.prototype.render = function() {
	if (! this.shellRendered) {
		this.buildShell();
		this.renderShell();
	}

	this.resetRenderers();

	this.cellDates.length = 0;

	var workingDate = SUD.widget.DateMath.findMonthStart(this.pageDate);

	this.renderHeader();
	this.renderBody(workingDate);
	this.renderFooter();

	this.onRender();
};


SUD.widget.Calendar_Core.prototype.renderHeader = function() {
	this.headerCell.innerHTML = "";
	
	var headerContainer = document.createElement("DIV");
	headerContainer.className = this.Style.CSS_HEADER;
	
	headerContainer.appendChild(document.createTextNode(this.buildMonthLabel()));
	
	this.headerCell.appendChild(headerContainer);
};
SUD.widget.Calendar_Core.prototype.renderBody = function(workingDate) {

	this.preMonthDays = workingDate.getDay();
	if (this.Options.START_WEEKDAY > 0) {
		this.preMonthDays -= this.Options.START_WEEKDAY;
	}
	if (this.preMonthDays < 0) {
		this.preMonthDays += 7;
	}
	
	this.monthDays = SUD.widget.DateMath.findMonthEnd(workingDate).getDate();
	this.postMonthDays = SUD.widget.Calendar_Core.DISPLAY_DAYS-this.preMonthDays-this.monthDays;
	
	workingDate = SUD.widget.DateMath.subtract(workingDate, SUD.widget.DateMath.DAY, this.preMonthDays);
	
	var weekRowIndex = 0;
	
	for (var c=0;c<this.cells.length;++c) {
		var cellRenderers = new Array();
		
		var cell = this.cells[c];
		this.clearElement(cell);

		cell.index = c;
		cell.id = this.id + "_cell" + c;
		
		this.cellDates[this.cellDates.length]=[workingDate.getFullYear(),workingDate.getMonth()+1,workingDate.getDate()];

		if (workingDate.getDay() == this.Options.START_WEEKDAY) {
			var rowHeaderCell = null;
			var rowFooterCell = null;
			
			if (this.Options.SHOW_WEEK_HEADER) {
				rowHeaderCell = this.weekHeaderCells[weekRowIndex];
				this.clearElement(rowHeaderCell);
			}
			
			if (this.Options.SHOW_WEEK_FOOTER) {
				rowFooterCell = this.weekFooterCells[weekRowIndex];
				this.clearElement(rowFooterCell);
			}			
			
			if (this.Options.HIDE_BLANK_WEEKS && this.isDateOOM(workingDate) && ! SUD.widget.DateMath.isMonthOverlapWeek(workingDate)) {
				// The first day of the week is not in this month, and it's not an overlap week
				continue;
			} else {
				if (rowHeaderCell) {
					this.renderRowHeader(workingDate, rowHeaderCell);
				}
				if (rowFooterCell) {
					this.renderRowFooter(workingDate, rowFooterCell);
				}	
			}
		}

		

		var renderer = null;
		
		if (workingDate.getFullYear()	== this.today.getFullYear() &&
			workingDate.getMonth()		== this.today.getMonth() &&
			workingDate.getDate()		== this.today.getDate()) {
			cellRenderers[cellRenderers.length]=this.renderCellStyleToday;
		}
		
		if (this.isDateOOM(workingDate)) {
			cellRenderers[cellRenderers.length]=this.renderCellNotThisMonth;
		} else {
			for (var r=0;r<this.renderStack.length;++r) {
				var rArray = this.renderStack[r];
				var type = rArray[0];
				
				var month;
				var day;
				var year;

				switch (type) {
					case SUD.widget.Calendar_Core.DATE:
						month = rArray[1][1];
						day = rArray[1][2];
						year = rArray[1][0];

						if (workingDate.getMonth()+1 == month && workingDate.getDate() == day && workingDate.getFullYear() == year) {
							renderer = rArray[2];
							this.renderStack.splice(r,1);
						}
						break;
					case SUD.widget.Calendar_Core.MONTH_DAY:
						month = rArray[1][0];
						day = rArray[1][1];
						
						if (workingDate.getMonth()+1 == month && workingDate.getDate() == day) {
							renderer = rArray[2];
							this.renderStack.splice(r,1);
						}
						break;
					case SUD.widget.Calendar_Core.RANGE:
						var date1 = rArray[1][0];
						var date2 = rArray[1][1];

						var d1month = date1[1];
						var d1day = date1[2];
						var d1year = date1[0];
						
						var d1 = new Date(d1year, d1month-1, d1day);

						var d2month = date2[1];
						var d2day = date2[2];
						var d2year = date2[0];

						var d2 = new Date(d2year, d2month-1, d2day);

						if (workingDate.getTime() >= d1.getTime() && workingDate.getTime() <= d2.getTime()) {
							renderer = rArray[2];

							if (workingDate.getTime()==d2.getTime()) { 
								this.renderStack.splice(r,1);
							}
						}
						break;
					case SUD.widget.Calendar_Core.WEEKDAY:
						
						var weekday = rArray[1][0];
						if (workingDate.getDay()+1 == weekday) {
							renderer = rArray[2];
						}
						break;
					case SUD.widget.Calendar_Core.MONTH:
						
						month = rArray[1][0];
						if (workingDate.getMonth()+1 == month) {
							renderer = rArray[2];
						}
						break;
				}
				
				if (renderer) {
					cellRenderers[cellRenderers.length]=renderer;
				}
			}

		}

		if (this._indexOfSelectedFieldArray([workingDate.getFullYear(),workingDate.getMonth()+1,workingDate.getDate()]) > -1) {
			cellRenderers[cellRenderers.length]=this.renderCellStyleSelected; 
		}

		if (this.minDate) {
			this.minDate = SUD.widget.DateMath.clearTime(this.minDate);
		}
		if (this.maxDate) {
			this.maxDate = SUD.widget.DateMath.clearTime(this.maxDate);
		}

		if (
			(this.minDate && (workingDate.getTime() < this.minDate.getTime())) ||
			(this.maxDate && (workingDate.getTime() > this.maxDate.getTime()))
		) {
			cellRenderers[cellRenderers.length]=this.renderOutOfBoundsDate;
		} else {
			cellRenderers[cellRenderers.length]=this.renderCellDefault;	
		}
		
		for (var x=0;x<cellRenderers.length;++x) {
			var ren = cellRenderers[x];
			if (ren.call(this,workingDate,cell) == SUD.widget.Calendar_Core.STOP_RENDER) {
				break;
			}
		}
		
		workingDate = SUD.widget.DateMath.add(workingDate, SUD.widget.DateMath.DAY, 1); // Go to the next day
		if (workingDate.getDay() == this.Options.START_WEEKDAY) {
			weekRowIndex += 1;
		}

		SUD.util.Dom.addClass(cell, this.Style.CSS_CELL);

		if (c >= 0 && c <= 6) {
			SUD.util.Dom.addClass(cell, this.Style.CSS_CELL_TOP);
		}
		if ((c % 7) == 0) {
			SUD.util.Dom.addClass(cell, this.Style.CSS_CELL_LEFT);
		}
		if (((c+1) % 7) == 0) {
			SUD.util.Dom.addClass(cell, this.Style.CSS_CELL_RIGHT);
		}
		
		var postDays = this.postMonthDays; 
		if (postDays >= 7 && this.Options.HIDE_BLANK_WEEKS) {
			var blankWeeks = Math.floor(postDays/7);
			for (var p=0;p<blankWeeks;++p) {
				postDays -= 7;
			}
		}
		
		if (c >= ((this.preMonthDays+postDays+this.monthDays)-7)) {
			SUD.util.Dom.addClass(cell, this.Style.CSS_CELL_BOTTOM);
		}
	}
		
};

/**
* Appends the contents of the calendar widget footer into the shell. By default, 
* the calendar does not contain a footer, and this method must be implemented by 
* subclassing the widget.
*/
SUD.widget.Calendar_Core.prototype.renderFooter = function() { };

/**
* @private
*/
SUD.widget.Calendar_Core.prototype._unload = function(e, cal) {
	for (var c in cal.cells) {
		c = null;
	}
	
	cal.cells = null;
	
	cal.tbody = null;
	cal.oDomContainer = null;
	cal.table = null;
	cal.headerCell = null;
	
	cal = null;
};
												  
												  
/****************** BEGIN BUILT-IN TABLE CELL RENDERERS ************************************/

SUD.widget.Calendar_Core.prototype.renderOutOfBoundsDate = function(workingDate, cell) {
	SUD.util.Dom.addClass(cell, this.Style.CSS_CELL_OOB);
	cell.innerHTML = workingDate.getDate();
	return SUD.widget.Calendar_Core.STOP_RENDER;
}

/**
* Renders the row header for a week. The date passed in should be
* the first date of the given week.
* @param {Date}					workingDate		The current working Date object (beginning of the week) being used to generate the calendar
* @param {HTMLTableCellElement}	cell			The current working cell in the calendar
*/
SUD.widget.Calendar_Core.prototype.renderRowHeader = function(workingDate, cell) {
	SUD.util.Dom.addClass(cell, this.Style.CSS_ROW_HEADER);
	
	var useYear = this.pageDate.getFullYear();
	
	if (! SUD.widget.DateMath.isYearOverlapWeek(workingDate)) {
		useYear = workingDate.getFullYear();
	}
	
	var weekNum = SUD.widget.DateMath.getWeekNumber(workingDate, useYear, this.Options.START_WEEKDAY);
	cell.innerHTML = weekNum;
	
	if (this.isDateOOM(workingDate) && ! SUD.widget.DateMath.isMonthOverlapWeek(workingDate)) {
		SUD.util.Dom.addClass(cell, this.Style.CSS_CELL_OOM);	
	}
};

SUD.widget.Calendar_Core.prototype.renderRowFooter = function(workingDate, cell) {
	SUD.util.Dom.addClass(cell, this.Style.CSS_ROW_FOOTER);
	
	if (this.isDateOOM(workingDate) && ! SUD.widget.DateMath.isMonthOverlapWeek(workingDate)) {
		SUD.util.Dom.addClass(cell, this.Style.CSS_CELL_OOM);	
	}
};


SUD.widget.Calendar_Core.prototype.renderCellDefault = function(workingDate, cell) {
	cell.innerHTML = "";
	var link = document.createElement("a");

	link.href="javascript:void(null);";
	link.name=this.id+"__"+workingDate.getFullYear()+"_"+(workingDate.getMonth()+1)+"_"+workingDate.getDate();

	link.appendChild(document.createTextNode(this.buildDayLabel(workingDate)));
	cell.appendChild(link);
};


SUD.widget.Calendar_Core.prototype.renderCellStyleHighlight1 = function(workingDate, cell) {
	SUD.util.Dom.addClass(cell, this.Style.CSS_CELL_HIGHLIGHT1);
};


SUD.widget.Calendar_Core.prototype.renderCellStyleHighlight2 = function(workingDate, cell) {
	SUD.util.Dom.addClass(cell, this.Style.CSS_CELL_HIGHLIGHT2);
};


SUD.widget.Calendar_Core.prototype.renderCellStyleHighlight3 = function(workingDate, cell) {
	SUD.util.Dom.addClass(cell, this.Style.CSS_CELL_HIGHLIGHT3);
};


SUD.widget.Calendar_Core.prototype.renderCellStyleHighlight4 = function(workingDate, cell) {
	SUD.util.Dom.addClass(cell, this.Style.CSS_CELL_HIGHLIGHT4);
};


SUD.widget.Calendar_Core.prototype.renderCellStyleToday = function(workingDate, cell) {
	SUD.util.Dom.addClass(cell, this.Style.CSS_CELL_TODAY);
};


SUD.widget.Calendar_Core.prototype.renderCellStyleSelected = function(workingDate, cell) {
	SUD.util.Dom.addClass(cell, this.Style.CSS_CELL_SELECTED);
};


SUD.widget.Calendar_Core.prototype.renderCellNotThisMonth = function(workingDate, cell) {
	SUD.util.Dom.addClass(cell, this.Style.CSS_CELL_OOM);
	cell.innerHTML=workingDate.getDate();
	return SUD.widget.Calendar_Core.STOP_RENDER;
};

SUD.widget.Calendar_Core.prototype.renderBodyCellRestricted = function(workingDate, cell) {
	SUD.widget.Calendar_Core.setCssClasses(cell, [this.Style.CSS_CELL,this.Style.CSS_CELL_RESTRICTED]);
	cell.innerHTML=workingDate.getDate();
	return SUD.widget.Calendar_Core.STOP_RENDER;
};

SUD.widget.Calendar_Core.prototype.addMonths = function(count) {
	this.pageDate = SUD.widget.DateMath.add(this.pageDate, SUD.widget.DateMath.MONTH, count);
	this.resetRenderers();
	this.onChangePage();
};


SUD.widget.Calendar_Core.prototype.subtractMonths = function(count) {
	this.pageDate = SUD.widget.DateMath.subtract(this.pageDate, SUD.widget.DateMath.MONTH, count);
	this.resetRenderers();
	this.onChangePage();
};


SUD.widget.Calendar_Core.prototype.addYears = function(count) {
	this.pageDate = SUD.widget.DateMath.add(this.pageDate, SUD.widget.DateMath.YEAR, count);
	this.resetRenderers();
	this.onChangePage();
};


SUD.widget.Calendar_Core.prototype.subtractYears = function(count) {
	this.pageDate = SUD.widget.DateMath.subtract(this.pageDate, SUD.widget.DateMath.YEAR, count);
	this.resetRenderers();
	this.onChangePage();
};


SUD.widget.Calendar_Core.prototype.nextMonth = function() {
	this.addMonths(1);
};


SUD.widget.Calendar_Core.prototype.previousMonth = function() {
	this.subtractMonths(1);
};


SUD.widget.Calendar_Core.prototype.nextYear = function() {
	this.addYears(1);
};


SUD.widget.Calendar_Core.prototype.previousYear = function() {
	this.subtractYears(1);
};


SUD.widget.Calendar_Core.prototype.reset = function() {
	this.selectedDates.length = 0;
	this.selectedDates = this._selectedDates.concat();

	this.pageDate = new Date(this._pageDate.getTime());
	this.onReset();
};


SUD.widget.Calendar_Core.prototype.clear = function() {
	this.selectedDates.length = 0;
	this.pageDate = new Date(this.today.getTime());
	this.onClear();
};


SUD.widget.Calendar_Core.prototype.select = function(date) {
	this.onBeforeSelect();

	var aToBeSelected = this._toFieldArray(date);

	for (var a=0;a<aToBeSelected.length;++a) {
		var toSelect = aToBeSelected[a]; // For each date item in the list of dates we're trying to select
		if (this._indexOfSelectedFieldArray(toSelect) == -1) { // not already selected?
			this.selectedDates[this.selectedDates.length]=toSelect;
		}
	}
	
	if (this.parent) {
		this.parent.sync(this);
	}

	this.onSelect();

	return this.getSelectedDates();
};


SUD.widget.Calendar_Core.prototype.selectCell = function(cellIndex) {
	this.onBeforeSelect();

	this.cells = this.tbody.getElementsByTagName("TD");

	var cell = this.cells[cellIndex];
	var cellDate = this.cellDates[cellIndex];

	var dCellDate = this._toDate(cellDate);

	var selectDate = cellDate.concat();

	this.selectedDates.push(selectDate);
	
	if (this.parent) {
		this.parent.sync(this);
	}

	this.renderCellStyleSelected(dCellDate,cell);

	this.onSelect();
	this.doCellMouseOut.call(cell, null, this);

	return this.getSelectedDates();
};


SUD.widget.Calendar_Core.prototype.deselect = function(date) {
	this.onBeforeDeselect();

	var aToBeSelected = this._toFieldArray(date);

	for (var a=0;a<aToBeSelected.length;++a) {
		var toSelect = aToBeSelected[a]; // For each date item in the list of dates we're trying to select
		var index = this._indexOfSelectedFieldArray(toSelect);
	
		if (index != -1) {	
			this.selectedDates.splice(index,1);
		}
	}

	if (this.parent) {
		this.parent.sync(this);
	} 

	this.onDeselect();
	return this.getSelectedDates();
};


SUD.widget.Calendar_Core.prototype.deselectCell = function(i) {
	this.onBeforeDeselect();
	this.cells = this.tbody.getElementsByTagName("TD");

	var cell = this.cells[i];
	var cellDate = this.cellDates[i];
	var cellDateIndex = this._indexOfSelectedFieldArray(cellDate);

	var dCellDate = this._toDate(cellDate);

	var selectDate = cellDate.concat();

	if (cellDateIndex > -1) {
		if (this.pageDate.getMonth() == dCellDate.getMonth() &&
			this.pageDate.getFullYear() == dCellDate.getFullYear()) {
			SUD.util.Dom.removeClass(cell, this.Style.CSS_CELL_SELECTED);
		}

		this.selectedDates.splice(cellDateIndex, 1);
	}


	if (this.parent) {
		this.parent.sync(this);
	}

	this.onDeselect();
	return this.getSelectedDates();
};


SUD.widget.Calendar_Core.prototype.deselectAll = function() {
	this.onBeforeDeselect();
	var count = this.selectedDates.length;
	this.selectedDates.length = 0;

	if (this.parent) {
		this.parent.sync(this);
	}
	
	if (count > 0) {
		this.onDeselect();
	}

	return this.getSelectedDates();
};

SUD.widget.Calendar_Core.prototype._toFieldArray = function(date) {
	var returnDate = new Array();

	if (date instanceof Date) {
		returnDate = [[date.getFullYear(), date.getMonth()+1, date.getDate()]];
	} else if (typeof date == 'string') {
		returnDate = this._parseDates(date);
	} else if (date instanceof Array) {
		for (var i=0;i<date.length;++i) {
			var d = date[i];
			returnDate[returnDate.length] = [d.getFullYear(),d.getMonth()+1,d.getDate()];
		}
	}
	
	return returnDate;
};


SUD.widget.Calendar_Core.prototype._toDate = function(dateFieldArray) {
	if (dateFieldArray instanceof Date) {
		return dateFieldArray;
	} else {
		return new Date(dateFieldArray[0],dateFieldArray[1]-1,dateFieldArray[2]);
	}
};

SUD.widget.Calendar_Core.prototype._fieldArraysAreEqual = function(array1, array2) {
	var match = false;

	if (array1[0]==array2[0]&&array1[1]==array2[1]&&array1[2]==array2[2]) {
		match=true;	
	}

	return match;
};


SUD.widget.Calendar_Core.prototype._indexOfSelectedFieldArray = function(find) {
	var selected = -1;

	for (var s=0;s<this.selectedDates.length;++s) {
		var sArray = this.selectedDates[s];
		if (find[0]==sArray[0]&&find[1]==sArray[1]&&find[2]==sArray[2]) {
			selected = s;
			break;
		}
	}

	return selected;
};


SUD.widget.Calendar_Core.prototype.isDateOOM = function(date) {
	var isOOM = false;
	if (date.getMonth() != this.pageDate.getMonth()) {
		isOOM = true;
	}
	return isOOM;
};


SUD.widget.Calendar_Core.prototype.onBeforeSelect = function() {
	if (! this.Options.MULTI_SELECT) {
		this.clearAllBodyCellStyles(this.Style.CSS_CELL_SELECTED);
		this.deselectAll();
	}
};


SUD.widget.Calendar_Core.prototype.onSelect = function() { };


SUD.widget.Calendar_Core.prototype.onBeforeDeselect = function() { };


SUD.widget.Calendar_Core.prototype.onDeselect = function() { };


SUD.widget.Calendar_Core.prototype.onChangePage = function() {
		var me = this;

		this.renderHeader();
		if (this.renderProcId) {
			clearTimeout(this.renderProcId);
		}
		this.renderProcId = setTimeout(function() {
											me.render();
											me.renderProcId = null;
										}, 1);
};


SUD.widget.Calendar_Core.prototype.onRender = function() { };


SUD.widget.Calendar_Core.prototype.onReset = function() { this.render(); };


SUD.widget.Calendar_Core.prototype.onClear = function() { this.render(); };


SUD.widget.Calendar_Core.prototype.validate = function() { return true; };


SUD.widget.Calendar_Core.prototype._parseDate = function(sDate) {
	var aDate = sDate.split(this.Locale.DATE_FIELD_DELIMITER);
	var rArray;

	if (aDate.length == 2) {
		rArray = [aDate[this.Locale.MD_MONTH_POSITION-1],aDate[this.Locale.MD_DAY_POSITION-1]];
		rArray.type = SUD.widget.Calendar_Core.MONTH_DAY;
	} else {
		rArray = [aDate[this.Locale.MDY_YEAR_POSITION-1],aDate[this.Locale.MDY_MONTH_POSITION-1],aDate[this.Locale.MDY_DAY_POSITION-1]];
		rArray.type = SUD.widget.Calendar_Core.DATE;
	}
	return rArray;
};


SUD.widget.Calendar_Core.prototype._parseDates = function(sDates) {
	var aReturn = new Array();

	var aDates = sDates.split(this.Locale.DATE_DELIMITER);
	
	for (var d=0;d<aDates.length;++d) {
		var sDate = aDates[d];

		if (sDate.indexOf(this.Locale.DATE_RANGE_DELIMITER) != -1) {
			// This is a range
			var aRange = sDate.split(this.Locale.DATE_RANGE_DELIMITER);

			var dateStart = this._parseDate(aRange[0]);
			var dateEnd = this._parseDate(aRange[1]);

			var fullRange = this._parseRange(dateStart, dateEnd);
			aReturn = aReturn.concat(fullRange);
		} else {
			// This is not a range
			var aDate = this._parseDate(sDate);
			aReturn.push(aDate);
		}
	}
	return aReturn;
};


SUD.widget.Calendar_Core.prototype._parseRange = function(startDate, endDate) {
	var dStart   = new Date(startDate[0],startDate[1]-1,startDate[2]);
	var dCurrent = SUD.widget.DateMath.add(new Date(startDate[0],startDate[1]-1,startDate[2]),SUD.widget.DateMath.DAY,1);
	var dEnd     = new Date(endDate[0],  endDate[1]-1,  endDate[2]);

	var results = new Array();
	results.push(startDate);
	while (dCurrent.getTime() <= dEnd.getTime()) {
		results.push([dCurrent.getFullYear(),dCurrent.getMonth()+1,dCurrent.getDate()]);
		dCurrent = SUD.widget.DateMath.add(dCurrent,SUD.widget.DateMath.DAY,1);
	}
	return results;
};


SUD.widget.Calendar_Core.prototype.resetRenderers = function() {
	this.renderStack = this._renderStack.concat();
};

 
SUD.widget.Calendar_Core.prototype.clearElement = function(cell) {
	cell.innerHTML = "&nbsp;";
	cell.className="";
};


SUD.widget.Calendar_Core.prototype.addRenderer = function(sDates, fnRender) {
	var aDates = this._parseDates(sDates);
	for (var i=0;i<aDates.length;++i) {
		var aDate = aDates[i];
	
		if (aDate.length == 2) { // this is either a range or a month/day combo
			if (aDate[0] instanceof Array) { // this is a range
				this._addRenderer(SUD.widget.Calendar_Core.RANGE,aDate,fnRender);
			} else { // this is a month/day combo
				this._addRenderer(SUD.widget.Calendar_Core.MONTH_DAY,aDate,fnRender);
			}
		} else if (aDate.length == 3) {
			this._addRenderer(SUD.widget.Calendar_Core.DATE,aDate,fnRender);
		}
	}
};


SUD.widget.Calendar_Core.prototype._addRenderer = function(type, aDates, fnRender) {
	var add = [type,aDates,fnRender];
	this.renderStack.unshift(add);	
	
	this._renderStack = this.renderStack.concat();
};


SUD.widget.Calendar_Core.prototype.addMonthRenderer = function(month, fnRender) {
	this._addRenderer(SUD.widget.Calendar_Core.MONTH,[month],fnRender);
};


SUD.widget.Calendar_Core.prototype.addWeekdayRenderer = function(weekday, fnRender) {
	this._addRenderer(SUD.widget.Calendar_Core.WEEKDAY,[weekday],fnRender);
};

SUD.widget.Calendar_Core.setCssClasses = function(element, aStyles) {
	element.className = "";
	var className = aStyles.join(" ");
	element.className = className;
};


SUD.widget.Calendar_Core.prototype.clearAllBodyCellStyles = function(style) {
	for (var c=0;c<this.cells.length;++c) {
		SUD.util.Dom.removeClass(this.cells[c],style);
	}
};


SUD.widget.Calendar_Core.prototype.setMonth = function(month) {
	this.pageDate.setMonth(month);
};


SUD.widget.Calendar_Core.prototype.setYear = function(year) {
	this.pageDate.setFullYear(year);
};


SUD.widget.Calendar_Core.prototype.getSelectedDates = function() {
	var returnDates = new Array();

	for (var d=0;d<this.selectedDates.length;++d) {
		var dateArray = this.selectedDates[d];

		var date = new Date(dateArray[0],dateArray[1]-1,dateArray[2]);
		returnDates.push(date);
	}

	returnDates.sort();
	return returnDates;
};


SUD.widget.Calendar_Core._getBrowser = function() {

  var ua = navigator.userAgent.toLowerCase();
  
  if (ua.indexOf('opera')!=-1) // Opera (check first in case of spoof)
	 return 'opera';
  else if (ua.indexOf('msie')!=-1) // IE
	 return 'ie';
  else if (ua.indexOf('safari')!=-1) // Safari (check before Gecko because it includes "like Gecko")
	 return 'safari';
  else if (ua.indexOf('gecko') != -1) // Gecko
	 return 'gecko';
 else
  return false;
}


SUD.widget.Calendar_Core.prototype.toString = function() {
	return "Calendar_Core " + this.id;
}

SUD.widget.Cal_Core = SUD.widget.Calendar_Core;
SUD.widget.Calendar = function(id, containerId, monthyear, selected) {
	if (arguments.length > 0) {
		this.init(id, containerId, monthyear, selected);
	}
}

SUD.widget.Calendar.prototype = new SUD.widget.Calendar_Core();

SUD.widget.Calendar.prototype.buildShell = function() {
	this.border = document.createElement("DIV");
	this.border.className =  this.Style.CSS_CONTAINER;
	
	this.table = document.createElement("TABLE");
	this.table.cellSpacing = 0;	
	
	SUD.widget.Calendar_Core.setCssClasses(this.table, [this.Style.CSS_CALENDAR]);

	this.border.id = this.id;
	
	this.buildShellHeader();
	this.buildShellBody();
	this.buildShellFooter();
};

SUD.widget.Calendar.prototype.renderShell = function() {
	this.border.appendChild(this.table);
	this.oDomContainer.appendChild(this.border);
	this.shellRendered = true;
};

SUD.widget.Calendar.prototype.renderHeader = function() {
	this.headerCell.innerHTML = "";
	
	var headerContainer = document.createElement("DIV");
	headerContainer.className = this.Style.CSS_HEADER;
	
	if (this.linkLeft) {
		SUD.util.Event.removeListener(this.linkLeft, "mousedown", this.previousMonth);
	}
	this.linkLeft = document.createElement("A");
	this.linkLeft.innerHTML = "&nbsp;";
	SUD.util.Event.addListener(this.linkLeft, "mousedown", this.previousMonth, this, true);
	this.linkLeft.style.backgroundImage =  "url(" + this.Options.NAV_ARROW_LEFT + ")";
	this.linkLeft.className = this.Style.CSS_NAV_LEFT;
	
	if (this.linkRight) {
		SUD.util.Event.removeListener(this.linkRight, "mousedown", this.nextMonth);
	}
	this.linkRight = document.createElement("A");
	this.linkRight.innerHTML = "&nbsp;";
	SUD.util.Event.addListener(this.linkRight, "mousedown", this.nextMonth, this, true);
	this.linkRight.style.backgroundImage = "url(" + this.Options.NAV_ARROW_RIGHT + ")";
	this.linkRight.className = this.Style.CSS_NAV_RIGHT;
	
	headerContainer.appendChild(this.linkLeft);
	headerContainer.appendChild(document.createTextNode(this.buildMonthLabel()));
	headerContainer.appendChild(this.linkRight);
	
	this.headerCell.appendChild(headerContainer);
};

SUD.widget.Cal = SUD.widget.Calendar;
SUD.widget.CalendarGroup = function(pageCount, id, containerId, monthyear, selected) {
	if (arguments.length > 0) {
		this.init(pageCount, id, containerId, monthyear, selected);
	}
}


SUD.widget.CalendarGroup.prototype.init = function(pageCount, id, containerId, monthyear, selected) {
	this.id = id;
	this.selectedDates = new Array();
	this.containerId = containerId;
	
	this.pageCount = pageCount;

	this.pages = new Array();

	for (var p=0;p<pageCount;++p) {
		var cal = this.constructChild(id + "_" + p, this.containerId + "_" + p , monthyear, selected);
				
		cal.parent = this;
		
		cal.index = p;

		cal.pageDate.setMonth(cal.pageDate.getMonth()+p);
		cal._pageDate = new Date(cal.pageDate.getFullYear(),cal.pageDate.getMonth(),cal.pageDate.getDate());
		this.pages.push(cal);
	}
	
	this.doNextMonth = function(e, calGroup) {
		calGroup.nextMonth();
	};
	
	this.doPreviousMonth = function(e, calGroup) {
		calGroup.previousMonth();
	};
};


SUD.widget.CalendarGroup.prototype.setChildFunction = function(fnName, fn) {
	for (var p=0;p<this.pageCount;++p) {
		this.pages[p][fnName] = fn;
	}
}


SUD.widget.CalendarGroup.prototype.callChildFunction = function(fnName, args) {
	for (var p=0;p<this.pageCount;++p) {
		var page = this.pages[p];
		if (page[fnName]) {
			var fn = page[fnName];
			fn.call(page, args);
		}
	}	
}


SUD.widget.CalendarGroup.prototype.constructChild = function(id,containerId,monthyear,selected) {
	return new SUD.widget.Calendar_Core(id,containerId,monthyear,selected);
};



SUD.widget.CalendarGroup.prototype.setMonth = function(month) {
	for (var p=0;p<this.pages.length;++p)
	{
		var cal = this.pages[p];
		cal.setMonth(month+p);
	}
};


SUD.widget.CalendarGroup.prototype.setYear = function(year) {
	for (var p=0;p<this.pages.length;++p)
	{
		var cal = this.pages[p];
		if ((cal.pageDate.getMonth()+1) == 1 && p>0)
		{
			year+=1;
		}
		cal.setYear(year);
	}
};


SUD.widget.CalendarGroup.prototype.render = function() {
	for (var p=0;p<this.pages.length;++p)
	{
		var cal = this.pages[p];
		cal.render();
	}
};


SUD.widget.CalendarGroup.prototype.select = function(date) {
	var ret;
	for (var p=0;p<this.pages.length;++p)
	{
		var cal = this.pages[p];
		ret = cal.select(date);
	}
	return ret;
};


SUD.widget.CalendarGroup.prototype.selectCell = function(cellIndex) {
	var ret;
	for (var p=0;p<this.pages.length;++p)
	{
		var cal = this.pages[p];
		ret = cal.selectCell(cellIndex);
	}
	return ret;
};

SUD.widget.CalendarGroup.prototype.deselect = function(date) {
	var ret;
	for (var p=0;p<this.pages.length;++p)
	{
		var cal = this.pages[p];
		ret = cal.deselect(date);
	}
	return ret;
};

SUD.widget.CalendarGroup.prototype.deselectAll = function() {
	var ret;
	for (var p=0;p<this.pages.length;++p)
	{
		var cal = this.pages[p];
		ret = cal.deselectAll();
	}
	return ret;
};

SUD.widget.CalendarGroup.prototype.deselectCell = function(cellIndex) {
	for (var p=0;p<this.pages.length;++p)
	{
		var cal = this.pages[p];
		cal.deselectCell(cellIndex);
	}
	return this.getSelectedDates();
};

SUD.widget.CalendarGroup.prototype.reset = function() {
	for (var p=0;p<this.pages.length;++p)
	{
		var cal = this.pages[p];
		cal.reset();
	}
};

SUD.widget.CalendarGroup.prototype.clear = function() {
	for (var p=0;p<this.pages.length;++p)
	{
		var cal = this.pages[p];
		cal.clear();
	}
};

SUD.widget.CalendarGroup.prototype.nextMonth = function() {
	for (var p=0;p<this.pages.length;++p)
	{
		var cal = this.pages[p];
		cal.nextMonth();
	}
};

SUD.widget.CalendarGroup.prototype.previousMonth = function() {
	for (var p=this.pages.length-1;p>=0;--p)
	{
		var cal = this.pages[p];
		cal.previousMonth();
	}
};

SUD.widget.CalendarGroup.prototype.nextYear = function() {
	for (var p=0;p<this.pages.length;++p)
	{
		var cal = this.pages[p];
		cal.nextYear();
	}
};

SUD.widget.CalendarGroup.prototype.previousYear = function() {
	for (var p=0;p<this.pages.length;++p)
	{
		var cal = this.pages[p];
		cal.previousYear();
	}
};

SUD.widget.CalendarGroup.prototype.sync = function(caller) {
	var calendar;

	if (caller)
	{
		this.selectedDates = caller.selectedDates.concat();
	} else {
		var hash = new Object();
		var combinedDates = new Array();

		for (var p=0;p<this.pages.length;++p)
		{
			calendar = this.pages[p];

			var values = calendar.selectedDates;

			for (var v=0;v<values.length;++v)
			{
				var valueArray = values[v];
				hash[valueArray.toString()] = valueArray;
			}
		}

		for (var val in hash)
		{
			combinedDates[combinedDates.length]=hash[val];
		}
		
		this.selectedDates = combinedDates.concat();
	}

	// Set all the values into the children
	for (p=0;p<this.pages.length;++p)
	{
		calendar = this.pages[p];
		if (! calendar.Options.MULTI_SELECT) {
			calendar.clearAllBodyCellStyles(calendar.Config.Style.CSS_CELL_SELECTED);
		}
		calendar.selectedDates = this.selectedDates.concat();
		
	}
	
	return this.getSelectedDates();
};


SUD.widget.CalendarGroup.prototype.getSelectedDates = function() { 
	var returnDates = new Array();

	for (var d=0;d<this.selectedDates.length;++d)
	{
		var dateArray = this.selectedDates[d];

		var date = new Date(dateArray[0],dateArray[1]-1,dateArray[2]);
		returnDates.push(date);
	}

	returnDates.sort();
	return returnDates;
};


SUD.widget.CalendarGroup.prototype.addRenderer = function(sDates, fnRender) {
	for (var p=0;p<this.pages.length;++p)
	{
		var cal = this.pages[p];
		cal.addRenderer(sDates, fnRender);
	}
};


SUD.widget.CalendarGroup.prototype.addMonthRenderer = function(month, fnRender) {
	for (var p=0;p<this.pages.length;++p)
	{
		var cal = this.pages[p];
		cal.addMonthRenderer(month, fnRender);
	}
};

/**
* Calls the addWeekdayRenderer function of all child calendars within the group.
*/
SUD.widget.CalendarGroup.prototype.addWeekdayRenderer = function(weekday, fnRender) {
	for (var p=0;p<this.pages.length;++p)
	{
		var cal = this.pages[p];
		cal.addWeekdayRenderer(weekday, fnRender);
	}
};


SUD.widget.CalendarGroup.prototype.wireEvent = function(eventName, fn) {
	for (var p=0;p<this.pages.length;++p)
	{
		var cal = this.pages[p];
		cal[eventName] = fn;
	}
};

/**
* Returns a string representation of the object.
* @type string
*/ 
SUD.widget.CalendarGroup.prototype.toString = function() {
	return "CalendarGroup " + this.id;
}

SUD.widget.CalGrp = SUD.widget.CalendarGroup;
SUD.widget.Calendar2up_Cal = function(id, containerId, monthyear, selected) {
	if (arguments.length > 0)
	{
		this.init(id, containerId, monthyear, selected);
	}
}

SUD.widget.Calendar2up_Cal.prototype = new SUD.widget.Calendar_Core();

SUD.widget.Calendar2up_Cal.prototype.renderHeader = function() {
	this.headerCell.innerHTML = "";
	
	var headerContainer = document.createElement("DIV");
	headerContainer.className = this.Style.CSS_HEADER;
	
	if (this.index == 0) {

		if (this.linkLeft) {
			SUD.util.Event.removeListener(this.linkLeft, "mousedown", this.parent.doPreviousMonth);
		}
		this.linkLeft = document.createElement("A");
		this.linkLeft.innerHTML = "&nbsp;";
		this.linkLeft.style.backgroundImage =  "url(" + this.Options.NAV_ARROW_LEFT + ")";
		this.linkLeft.className = this.Style.CSS_NAV_LEFT;
		
		SUD.util.Event.addListener(this.linkLeft, "mousedown", this.parent.doPreviousMonth, this.parent);
		headerContainer.appendChild(this.linkLeft);
	}
	
	headerContainer.appendChild(document.createTextNode(this.buildMonthLabel()));
	
	if (this.index == 1) {

		if (this.linkRight) {
			SUD.util.Event.removeListener(this.linkRight, "mousedown", this.parent.doNextMonth);
		}
		this.linkRight = document.createElement("A");
		this.linkRight.innerHTML = "&nbsp;";
		this.linkRight.style.backgroundImage = "url(" + this.Options.NAV_ARROW_RIGHT + ")";
		this.linkRight.className = this.Style.CSS_NAV_RIGHT;

		SUD.util.Event.addListener(this.linkRight, "mousedown", this.parent.doNextMonth, this.parent);
		headerContainer.appendChild(this.linkRight);
	}
	
	this.headerCell.appendChild(headerContainer);
};





SUD.widget.Calendar2up = function(id, containerId, monthyear, selected) {
	if (arguments.length > 0)
	{	
		this.buildWrapper(containerId);
		this.init(2, id, containerId, monthyear, selected);
	}
}

SUD.widget.Calendar2up.prototype = new SUD.widget.CalendarGroup();


SUD.widget.Calendar2up.CSS_2UPWRAPPER = "sud-cal2upwrapper";

SUD.widget.Calendar2up.CSS_CONTAINER = "sud-calcontainer";


SUD.widget.Calendar2up.CSS_2UPCONTAINER = "cal2up";


SUD.widget.Calendar2up.CSS_2UPTITLE = "title";


SUD.widget.Calendar2up.CSS_2UPCLOSE = "close-icon";


SUD.widget.Calendar2up.prototype.constructChild = function(id,containerId,monthyear,selected) {
	var cal = new SUD.widget.Calendar2up_Cal(id,containerId,monthyear,selected);
	return cal;
};


SUD.widget.Calendar2up.prototype.buildWrapper = function(containerId) {
	var outerContainer = document.getElementById(containerId);
	
	outerContainer.className = SUD.widget.Calendar2up.CSS_2UPWRAPPER;
	
	var innerContainer = document.createElement("DIV");
	innerContainer.className = SUD.widget.Calendar2up.CSS_CONTAINER;
	innerContainer.id = containerId + "_inner";
	
	var cal1Container = document.createElement("DIV");
	cal1Container.id = containerId + "_0";
	cal1Container.className = SUD.widget.Calendar2up.CSS_2UPCONTAINER;
	cal1Container.style.marginRight = "10px";
	
	var cal2Container = document.createElement("DIV");
	cal2Container.id = containerId + "_1"; 
	cal2Container.className = SUD.widget.Calendar2up.CSS_2UPCONTAINER;
	
	outerContainer.appendChild(innerContainer);
	innerContainer.appendChild(cal1Container);
	innerContainer.appendChild(cal2Container);
	
	this.innerContainer = innerContainer;
	this.outerContainer = outerContainer;
}


SUD.widget.Calendar2up.prototype.render = function() {
	this.renderHeader();
	SUD.widget.CalendarGroup.prototype.render.call(this);
	this.renderFooter();
};


SUD.widget.Calendar2up.prototype.renderHeader = function() {
	if (! this.title) {
		this.title = "";
	}
	if (! this.titleDiv)
	{
		this.titleDiv = document.createElement("DIV");
		if (this.title == "")
		{
			this.titleDiv.style.display="none";
		}
	}

	this.titleDiv.className = SUD.widget.Calendar2up.CSS_2UPTITLE;
	this.titleDiv.innerHTML = this.title;

//	if (this.outerContainer.style.position == "absolute")
//	{
		var linkClose = document.createElement("A");
		linkClose.href = "javascript:void(null)";
		SUD.util.Event.addListener(linkClose, "click", this.hide, this);

		var imgClose = document.createElement("IMG");
		imgClose.src = "images/calx.gif";
		imgClose.className = SUD.widget.Calendar2up.CSS_2UPCLOSE;

		linkClose.appendChild(imgClose);

		this.linkClose = linkClose;

		this.titleDiv.appendChild(linkClose);
//	}

	this.innerContainer.insertBefore(this.titleDiv, this.innerContainer.firstChild);
}


SUD.widget.Calendar2up.prototype.hide = function(e, cal) {
	if (! cal)
	{
		cal = this;
	}
	cal.outerContainer.style.display = "none";
}


SUD.widget.Calendar2up.prototype.renderFooter = function() {}

SUD.widget.Cal2up = SUD.widget.Calendar2up;