/***********************************************
 Fool-Proof Date Input Script with DHTML Calendar
 by Jason Moon - http://calendar.moonscript.com/dateinput.cfm
 ************************************************/

// Customizable variables
var DefaultDateFormat = 'MM/DD/YYYY'; // If no date format is supplied, this will be used instead
var HideWait = 3; // Number of seconds before the calendar will disappear
var Y2kPivotPoint = 76; // 2-digit years before this point will be created in the 21st century
var UnselectedMonthText = ''; // Text to display in the 1st month list item when the date isn't required
var CellWidth = 18;
var CellHeight = 16;

var CalBGColor = 'white';
var DayBGColor = 'lightgrey';

// Global variables
var ZCounter = 100;
var Today = new Date();
var WeekDays = new Array('S','M','T','W','T','F','S');
var MonthDays = new Array(31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);
var MonthNames = new Array('January','February','March','April','May','June','July','August','September','October','November','December');

// Only allows certain keys to be used in the date field
function YearDigitsOnly(e) {
   var KeyCode = (e.keyCode) ? e.keyCode : e.which;
   return ((KeyCode == 8) // backspace
        || (KeyCode == 9) // tab
        || (KeyCode == 37) // left arrow
        || (KeyCode == 39) // right arrow
        || (KeyCode == 46) // delete
        || ((KeyCode > 47) && (KeyCode < 58)) // 0 - 9
   );
}

// Gets the absolute pixel position of the supplied element
function GetTagPixels(StartTag, Direction) {
   var PixelAmt = (Direction == 'LEFT') ? StartTag.offsetLeft : StartTag.offsetTop;
   while ((StartTag.tagName != 'BODY') && (StartTag.tagName != 'HTML')) {
      StartTag = StartTag.offsetParent;
      PixelAmt += (Direction == 'LEFT') ? StartTag.offsetLeft : StartTag.offsetTop;
   }
   return PixelAmt;
}

// Is the specified select-list behind the calendar?
function BehindCal(SelectList, CalLeftX, CalRightX, CalTopY, CalBottomY, ListTopY) {
   var ListLeftX = GetTagPixels(SelectList, 'LEFT');
   var ListRightX = ListLeftX + SelectList.offsetWidth;
   var ListBottomY = ListTopY + SelectList.offsetHeight;
   return (((ListTopY < CalBottomY) && (ListBottomY > CalTopY)) && ((ListLeftX < CalRightX) && (ListRightX > CalLeftX)));
}

// For IE, hides any select-lists that are behind the calendar
function FixSelectLists(Over) {

   if (navigator.appName == 'Microsoft Internet Explorer') {
      var CalDiv = this.getCalendar();
      var CalLeftX = CalDiv.offsetLeft;
      var CalRightX = CalLeftX + CalDiv.offsetWidth;
      var CalTopY = CalDiv.offsetTop;
      var CalBottomY = CalTopY + (CellHeight * 9);
      var FoundCalInput = false;
      formLoop :
      for (var j=this.formNumber;j<document.forms.length;j++) 
      {
         for (var i=0;i<document.forms[j].elements.length;i++) 
         {
            if (typeof document.forms[j].elements[i].type == 'string') 
            {
            	
			  if (document.forms[j].elements[i].type.substr(0,6) == 'text') 
			  {
			  	
				 ListTopY = GetTagPixels(document.forms[j].elements[i], 'TOP');
				 if (ListTopY < CalBottomY) 
				 {
					if (BehindCal(document.forms[j].elements[i], CalLeftX, CalRightX, CalTopY, CalBottomY, ListTopY)) 
					{
					   document.forms[j].elements[i].style.visibility = (Over) ? 'hidden' : 'visible';
					}
				 }
				 else break formLoop;
			  }
            }
         }
      }
   }
}

// Displays a message in the status bar when hovering over the calendar days
function DayCellHover(Cell, Over, HoveredDay) {
   if (Over) {
      if ((this.yearValue == Today.getFullYear()) && (this.monthIndex == Today.getMonth()) && (HoveredDay == Today.getDate())) self.status = 'Click to select today';
      else {
         var Suffix = HoveredDay.toString();
         switch (Suffix.substr(Suffix.length - 1, 1)) {
            case '1' : Suffix += (HoveredDay == 11) ? 'th' : 'st'; break;
            case '2' : Suffix += (HoveredDay == 12) ? 'th' : 'nd'; break;
            case '3' : Suffix += (HoveredDay == 13) ? 'th' : 'rd'; break;
            default : Suffix += 'th'; break;
         }
         self.status = 'Click to select ' + this.monthName + ' ' + Suffix;
      }
   }
   else self.status = '';
   return true;
}

// Sets the form elements after a day has been picked from the calendar
function PickDisplayDay(ClickedDay, DateName, DateFormat) {
   this.show();
   //alert(DateName);
   var field = document.getElementById(DateName);

   this.setPicked(this.displayed.yearValue, this.displayed.monthIndex, ClickedDay, DateName, DateFormat);
   // Change the year, if necessary
   field.value = '' + (this.displayed.monthIndex + 1) + '/' + ClickedDay + '/' + this.picked.yearPad;
}

// Builds the HTML for the calendar days
function BuildCalendarDays(DateName, DateFormat) {
	
	
	
	
	var Rows = 5;
	if (((this.displayed.dayCount == 31) && (this.displayed.firstDay > 4)) || ((this.displayed.dayCount == 30) && (this.displayed.firstDay == 6))) 
		Rows = 6;
	else if ((this.displayed.dayCount == 28) && (this.displayed.firstDay == 0)) 
		Rows = 4;


	styleOnClass = 'cal_changeMonth_on';
	styleOffClass = 'cal_changeMonth_off';
	styleDisClass = 'cal_changeMonth_dis';

	pastOverStyleScript = ' ';
	pastOutStyleScript = ' ';
	pastClassStyleScript = ' '; 
	pastClick = '';

	if ((this.displayed.yearValue < Today.getFullYear()) ||
		(this.displayed.yearValue == Today.getFullYear() &&
		 this.displayed.monthIndex <= Today.getMonth()))
	{
		pastOverStyleScript = ' className=\'' + styleDisClass + '\'; ';
		pastOutStyleScript = ' className=\'' + styleDisClass + '\'; ';
		pastClassStyleScript = ' class="' + styleDisClass + '" ';  
		pastClick = ' ';
	}
	else
	{
		pastOverStyleScript = ' className=\'' + styleOnClass + '\'; ';
		pastOutStyleScript = ' className=\'' + styleOffClass + '\'; ';	
		pastClassStyleScript = ' class="' + styleOffClass + '" ';   
		pastClick = ' onClick="' + DateName + '_Object.previous.go()" ';
	}


	if (this.displayed.yearValue - Today.getFullYear() == 0)
	{
		monthsAfter = this.displayed.monthIndex - Today.getMonth();
	}
	else
	{
		monthsAfter = (this.displayed.yearValue - Today.getFullYear() - 1) * 12 + this.displayed.monthIndex - Today.getMonth();
	}
	
	

	if (monthsAfter > 5)
	{
		futureOverStyleScript = ' className=\'' + styleDisClass + '\'; ';
		futureOutStyleScript = ' className=\'' + styleDisClass + '\'; ';
		futureClassStyleScript = ' class="' + styleDisClass + '" ';   
		futureClick = '  ';
	}
	else
	{
		futureOverStyleScript = ' className=\'' + styleOnClass + '\'; ';
		futureOutStyleScript = ' className=\'' + styleOffClass + '\'; ';
		futureClassStyleScript = ' class="' + styleOffClass + '" ';   
		futureClick = ' onClick="' + DateName + '_Object.next.go()" ';
	}

	// Define the current date if it wasn't set already
	if (!CurrentDate) 
		var CurrentDate = new storedMonthObject(DateFormat, Today.getFullYear(), Today.getMonth(), Today.getDate());


	var HTML = ''

	HTML += '<table class="cal_table" cellspacing="0" cellpadding="1">';
	HTML += '<tr>';
		HTML += '<td colspan="7" class="cal_close_off" onMouseOver="className=\'cal_close_on\'" onMouseOut="className=\'cal_close_off\'" onClick="' + DateName + '_Object.show()" >Close</td>';
	HTML += '</tr>';
	HTML += '<tr>';
		HTML += '<td ' + pastClassStyleScript + ' id="' + DateName + '_Previous_ID" style="height:' + CellHeight + '" ' + pastClick + ' onMouseDown="VirtualButton(this,true)" onMouseUp="VirtualButton(this,false)" onMouseOver="' + pastOverStyleScript + 'return ' + DateName + '_Object.previous.hover(this,true)" onMouseOut="' + pastOutStyleScript + 'return ' + DateName + '_Object.previous.hover(this,false)" title="' + eval(DateName + '_Object.previous.monthName') + '">&lt;</td>';
		HTML += '<td class="cal_header" id="' + DateName + '_Current_ID" align="center" class="calendarDateInput" style="height:' + CellHeight + '" colspan="5">' + eval(DateName + '_Object.displayed.fullName') + '</td>';
		HTML += '<td ' + futureClassStyleScript + ' id="' + DateName + '_Next_ID" style="height:' + CellHeight + '" ' + futureClick + ' onMouseDown="VirtualButton(this,true)" onMouseUp="VirtualButton(this,false)" onMouseOver="' + futureOverStyleScript + 'return ' + DateName + '_Object.next.hover(this,true)" onMouseOut="' + futureOutStyleScript + 'return ' + DateName + '_Object.next.hover(this,false)" title="' + eval(DateName + '_Object.next.monthName') + '">&gt;</td>';
	HTML += '</tr>';
	HTML += '<tr>';
		for (var w=0;w<7;w++) 
			HTML += '<td width="14%" class="cal_day" width="' + CellWidth + '"  style="height:' + CellHeight + ';">' + WeekDays[w] + '</td>';
	HTML += '</tr>';
	HTML += '</table>';


	
	
	

	
	HTML += '<table class="cal_table" width="' + (CellWidth * 7) + '" cellspacing="0" cellpadding="1" style="cursor:default">';






	
	for (var j=0;j<Rows;j++) 
	{
		HTML += '<tr>';
		for (var i=1;i<=7;i++) 
		{
			Day = (j * 7) + (i - this.displayed.firstDay);
	
			if ((Day >= 1) && (Day <= this.displayed.dayCount)) 
			{
				onClickScript = 'onClick="' + this.objName + '.pickDay(' + Day + ',\''+ DateName + '\', \''+ DateFormat + '\');" ';
			
				if ((this.displayed.yearValue == this.picked.yearValue) && 
					(this.displayed.monthIndex == this.picked.monthIndex) && 
					(Day == this.picked.day)) 
				{
					styleOnClass = 'cal_datePicked_on';
					styleOffClass = 'cal_datePicked_off';
				}
				else if (
					(this.displayed.yearValue < Today.getFullYear()) ||
					(this.displayed.yearValue == Today.getFullYear() &&
					 this.displayed.monthIndex < Today.getMonth()) ||
					(this.displayed.yearValue == Today.getFullYear() && 
					 this.displayed.monthIndex == Today.getMonth() &&
					 Day < Today.getDate())
					)
				{
					styleOnClass = 'cal_datePast';
					styleOffClass = 'cal_datePast';
					onClickScript = '';
				}
				else 
				{
					styleOnClass = 'cal_date_on';
					styleOffClass = 'cal_date_off';
				}
				
				if (
					(this.displayed.yearValue == Today.getFullYear()) && 
					(this.displayed.monthIndex == Today.getMonth()) && 
					(Day == Today.getDate()))
				{
					styleOnClass = 'cal_dateCurrent_on';
					styleOffClass = 'cal_dateCurrent_off';
				}
				dayText = Day;
				
				overStyleScript = ' className=\'' + styleOnClass + '\'; ';
				outStyleScript = ' className=\'' + styleOffClass + '\'; ';
				classStyleScript = ' class="' + styleOffClass + '" ';
				
				
				HTML += '<td width="14%"';
					HTML += classStyleScript
					HTML += 'style="height:' + CellHeight + ';"';
					HTML += onClickScript;
					HTML += 'onMouseOver="' + overStyleScript + 'return ' + this.objName + '.displayed.dayHover(this,true,' + Day + ');" ';
					HTML += 'onMouseOut="' + outStyleScript + 'return ' + this.objName + '.displayed.dayHover(this,false);">';
							HTML += dayText;
				HTML += '</td>';
			}
			else
			{
				styleOnClass = 'cal_dateNull';
				styleOffClass = 'cal_dateNull';
				dayText = '&nbsp;'
				HTML += '<td width="14%" class="' + styleOffClass + '" style="height:' + CellHeight + '">' + dayText + '</td>';
			}
			
		}
		HTML += '</tr>';
	}
	
	HTML += '</table>';
	return HTML;
}

// Determines which century to use (20th or 21st) when dealing with 2-digit years
function GetGoodYear(YearDigits) {
   if (YearDigits.length == 4) return YearDigits;
   else {
      var Millennium = (YearDigits < Y2kPivotPoint) ? 2000 : 1900;
      return Millennium + parseInt(YearDigits,10);
   }
}

// Returns the number of days in a month (handles leap-years)
function GetDayCount(SomeYear, SomeMonth) {
   return ((SomeMonth == 1) && ((SomeYear % 400 == 0) || ((SomeYear % 4 == 0) && (SomeYear % 100 != 0)))) ? 29 : MonthDays[SomeMonth];
}

// Highlights the buttons
function VirtualButton(Cell, ButtonDown) {
	return;
   if (ButtonDown) {
      Cell.style.borderLeft = 'buttonshadow 1px solid';
      Cell.style.borderTop = 'buttonshadow 1px solid';
      Cell.style.borderBottom = 'buttonhighlight 1px solid';
      Cell.style.borderRight = 'buttonhighlight 1px solid';
   }
   else {
      Cell.style.borderLeft = 'buttonhighlight 1px solid';
      Cell.style.borderTop = 'buttonhighlight 1px solid';
      Cell.style.borderBottom = 'buttonshadow 1px solid';
      Cell.style.borderRight = 'buttonshadow 1px solid';
   }
}

// Mouse-over for the previous/next month buttons
function NeighborHover(Cell, Over, DateObj) {
   if (Over) {
      VirtualButton(Cell, false);
      self.status = 'Click to view ' + DateObj.fullName;
   }
   else {
      //Cell.style.border = 'buttonface 1px solid';
      self.status = '';
   }
   return true;
}

// Adds/removes days from the day list, depending on the month/year
function FixDayList(DayList, NewDays) {
   var DayPick = DayList.selectedIndex + 1;
   if (NewDays != DayList.length) {
      var OldSize = DayList.length;
      for (var k=Math.min(NewDays,OldSize);k<Math.max(NewDays,OldSize);k++) {
         (k >= NewDays) ? DayList.options[NewDays] = null : DayList.options[k] = new Option(k+1, k+1);
      }
      DayPick = Math.min(DayPick, NewDays);
      DayList.options[DayPick-1].selected = true;
   }
   return DayPick;
}

// Resets the year to its previous valid value when something invalid is entered
function FixYearInput(YearField) {
   var YearRE = new RegExp('\\d{' + YearField.defaultValue.length + '}');
   if (!YearRE.test(YearField.value)) YearField.value = YearField.defaultValue;
}

// Displays a message in the status bar when hovering over the calendar icon
function CalIconHover(Over) {
   var Message = (this.isShowing()) ? 'hide' : 'show';
   self.status = (Over) ? 'Click to ' + Message + ' the calendar' : '';
   return true;
}

// Starts the timer over from scratch
function CalTimerReset() {
   eval('clearTimeout(' + this.timerID + ')');
   eval(this.timerID + '=setTimeout(\'' + this.objName + '.timeShow()\',' + (HideWait * 1000) + ')');
}

// The timer for the calendar
function DoTimer(CancelTimer) {
   if (CancelTimer) eval('clearTimeout(' + this.timerID + ')');
   else {
      eval(this.timerID + '=null');
      this.resetTimer();
   }
}

function TimeShowCalendar()
{
	if (this.isShowing())
	{
		this.show();
	}
}

// Show or hide the calendar
function ShowCalendar() {
   if (this.isShowing()) {
      var StopTimer = true;
      this.getCalendar().style.zIndex = --ZCounter;
      this.getCalendar().style.visibility = 'hidden';
      this.fixSelects(false);
   }
   else {
      var StopTimer = false;
      this.fixSelects(true);
      this.getCalendar().style.zIndex = ++ZCounter;
      this.getCalendar().style.visibility = 'visible';
   }
   this.handleTimer(StopTimer);
   self.status = '';
}

// Hides the input elements when the "blank" month is selected
function SetElementStatus(Hide) {
   this.getDayList().style.visibility = (Hide) ? 'hidden' : 'visible';
   this.getYearField().style.visibility = (Hide) ? 'hidden' : 'visible';
   this.getCalendarLink().style.visibility = (Hide) ? 'hidden' : 'visible';
}

// Sets the date, based on the month selected
function CheckMonthChange(MonthList, DateName, DateFormat) {
   var DayList = this.getDayList();
   if (MonthList.options[MonthList.selectedIndex].value == '') {
      DayList.selectedIndex = 0;
      this.hideElements(true);
      this.setHidden('');
   }
   else {
      this.hideElements(false);
      if (this.isShowing()) {
         this.resetTimer(); // Gives the user more time to view the calendar with the newly-selected month
         this.getCalendar().style.zIndex = ++ZCounter; // Make sure this calendar is on top of any other calendars
      }
      var DayPick = FixDayList(DayList, GetDayCount(this.picked.yearValue, MonthList.options[MonthList.selectedIndex].value));
      this.setPicked(this.picked.yearValue, MonthList.options[MonthList.selectedIndex].value, DayPick, DateName, DateFormat);
   }
}

// Sets the date, based on the day selected
function CheckDayChange(DayList, DateName) {
   if (this.isShowing()) this.show();
   this.setPicked(this.picked.yearValue, this.picked.monthIndex, DayList.selectedIndex+1, DateName);
}

// Changes the date when a valid year has been entered
function CheckYearInput(YearField) {
   if ((YearField.value.length == YearField.defaultValue.length) && (YearField.defaultValue != YearField.value)) {
      if (this.isShowing()) {
         this.resetTimer(); // Gives the user more time to view the calendar with the newly-entered year
         this.getCalendar().style.zIndex = ++ZCounter; // Make sure this calendar is on top of any other calendars
      }
      var NewYear = GetGoodYear(YearField.value);
      var MonthList = this.getMonthList();
      var NewDay = FixDayList(this.getDayList(), GetDayCount(NewYear, this.picked.monthIndex));
      this.setPicked(NewYear, this.picked.monthIndex, NewDay, DateName);
      YearField.defaultValue = YearField.value;
   }
}

// Holds characteristics about a date
function dateObject() {
   if (Function.call) { // Used when 'call' method of the Function object is supported
      var ParentObject = this;
      var ArgumentStart = 0;
   }
   else { // Used with 'call' method of the Function object is NOT supported
      var ParentObject = arguments[0];
      var ArgumentStart = 1;
   }
   ParentObject.date = (arguments.length == (ArgumentStart+1)) ? new Date(arguments[ArgumentStart+0]) : new Date(arguments[ArgumentStart+0], arguments[ArgumentStart+1], arguments[ArgumentStart+2]);
   ParentObject.yearValue = ParentObject.date.getFullYear();
   ParentObject.monthIndex = ParentObject.date.getMonth();
   ParentObject.monthName = MonthNames[ParentObject.monthIndex];
   ParentObject.fullName = ParentObject.monthName + ' ' + ParentObject.yearValue;
   ParentObject.day = ParentObject.date.getDate();
   ParentObject.dayCount = GetDayCount(ParentObject.yearValue, ParentObject.monthIndex);
   var FirstDate = new Date(ParentObject.yearValue, ParentObject.monthIndex, 1);
   ParentObject.firstDay = FirstDate.getDay();
}

// Keeps track of the date that goes into the hidden field
function storedMonthObject(DateFormat, DateYear, DateMonth, DateDay) {
   (Function.call) ? dateObject.call(this, DateYear, DateMonth, DateDay) : dateObject(this, DateYear, DateMonth, DateDay);
   this.yearPad = this.yearValue.toString();
   this.monthPad = (this.monthIndex < 9) ? '0' + String(this.monthIndex + 1) : this.monthIndex + 1;
   this.dayPad = (this.day < 10) ? '0' + this.day.toString() : this.day;
   this.monthShort = this.monthName.substr(0,3).toUpperCase();
   // Formats the year with 2 digits instead of 4
   if (DateFormat.indexOf('YYYY') == -1) this.yearPad = this.yearPad.substr(2);
   // Define the date-part delimiter
   if (DateFormat.indexOf('/') >= 0) var Delimiter = '/';
   else if (DateFormat.indexOf('-') >= 0) var Delimiter = '-';
   else var Delimiter = '';
   // Determine the order of the months and days
   if (/DD?.?((MON)|(MM?M?))/.test(DateFormat)) {
      this.formatted = this.dayPad + Delimiter;
      this.formatted += (RegExp.$1.length == 3) ? this.monthShort : this.monthPad;
   }
   else if (/((MON)|(MM?M?))?.?DD?/.test(DateFormat)) {
      this.formatted = (RegExp.$1.length == 3) ? this.monthShort : this.monthPad;
      this.formatted += Delimiter + this.dayPad;
   }
   // Either prepend or append the year to the formatted date
   this.formatted = (DateFormat.substr(0,2) == 'YY') ? this.yearPad + Delimiter + this.formatted : this.formatted + Delimiter + this.yearPad;
}

// Object for the current displayed month
function displayMonthObject(ParentObject, DateYear, DateMonth, DateDay, DateName, DateFormat) {
	//alert("display month object: " + DateName);
   (Function.call) ? dateObject.call(this, DateYear, DateMonth, DateDay) : dateObject(this, DateYear, DateMonth, DateDay);
   this.displayID = ParentObject.hiddenFieldName + '_Current_ID';
   this.getDisplay = new Function('return document.getElementById(this.displayID)');
   this.dayHover = DayCellHover;
   this.goCurrent = new Function(ParentObject.objName + '.getCalendar().style.zIndex=++ZCounter;' + ParentObject.objName + '.setDisplayed(Today.getFullYear(),Today.getMonth(),\'' + DateName + '\', \'' + DateFormat + '\');');
   if (ParentObject.formNumber >= 0) this.getDisplay().innerHTML = this.fullName;
}

// Object for the previous/next buttons
function neighborMonthObject(ParentObject, IDText, DateMS, DateName, DateFormat) {
   (Function.call) ? dateObject.call(this, DateMS) : dateObject(this, DateMS);
   this.buttonID = ParentObject.hiddenFieldName + '_' + IDText + '_ID';
   this.hover = new Function('C','O','NeighborHover(C,O,this)');
   this.getButton = new Function('return document.getElementById(this.buttonID)');
   this.go = new Function(ParentObject.objName + '.getCalendar().style.zIndex=++ZCounter;' + ParentObject.objName + '.setDisplayed(this.yearValue,this.monthIndex,\'' + DateName + '\', \'' + DateFormat + '\');');
   if (ParentObject.formNumber >= 0) this.getButton().title = this.monthName;
}

// Sets the currently-displayed month object
function SetDisplayedMonth(DispYear, DispMonth, DateName, DateFormat) {
	//alert("SetDisplayedMonth: " + DateName);
   this.displayed = new displayMonthObject(this, DispYear, DispMonth, 1, DateName, DateFormat);
   // Creates the previous and next month objects
   this.previous = new neighborMonthObject(this, 'Previous', this.displayed.date.getTime() - 86400000, DateName, DateFormat);
   this.next = new neighborMonthObject(this, 'Next', this.displayed.date.getTime() + (86400000 * (this.displayed.dayCount + 1)), DateName, DateFormat);
   // Creates the HTML for the calendar
   if (this.formNumber >= 0) this.getDayTable().innerHTML = this.buildCalendar(DateName, DateFormat);
}

// Sets the current selected date
function SetPickedMonth(PickedYear, PickedMonth, PickedDay, DateName, DateFormat) {
   this.picked = new storedMonthObject(DateFormat, PickedYear, PickedMonth, PickedDay);
   this.setHidden(this.picked.formatted);
   //alert(this.getHiddenField().value);
   this.setDisplayed(PickedYear, PickedMonth, DateName, DateFormat);
}

// The calendar object
function calendarObject(DateName, DateFormat, DefaultDate) {

   /* Properties */
   this.hiddenFieldName = DateName;
   this.hiddenFieldId = DateName + "_Hidden_ID";
   this.monthListID = DateName + '_Month_ID';
   this.dayListID = DateName + '_Day_ID';
   this.yearFieldID = DateName + '_Year_ID';
   this.monthDisplayID = DateName + '_Current_ID';
   this.calendarID = DateName + '_ID';
   this.focusID = DateName + '_Focus_ID';
   this.dayTableID = DateName + '_DayTable_ID';
   this.calendarLinkID = this.calendarID + '_Link';
   this.timerID = this.calendarID + '_Timer';
   this.objName = DateName + '_Object';
   this.format = DateFormat;
   this.formNumber = -1;
   this.picked = null;
   this.displayed = null;
   this.previous = null;
   this.next = null;

   /* Methods */
   this.setPicked = SetPickedMonth;
   this.setDisplayed = SetDisplayedMonth;
   this.checkYear = CheckYearInput;
   this.fixYear = FixYearInput;
   this.changeMonth = CheckMonthChange;
   this.changeDay = CheckDayChange;
   this.resetTimer = CalTimerReset;
   this.hideElements = SetElementStatus;
   this.show = ShowCalendar;
   this.timeShow = TimeShowCalendar;
   this.handleTimer = DoTimer;
   this.iconHover = CalIconHover;
   this.buildCalendar = BuildCalendarDays;
   this.pickDay = PickDisplayDay;
   this.fixSelects = FixSelectLists;
   this.setHidden = new Function('D',' if (this.formNumber >= 0){ this.getHiddenField().value=D;} ');
   // Returns a reference to these elements
   this.getHiddenField = new Function('return document.getElementById(this.hiddenFieldId)');
   this.getMonthList = new Function('return document.getElementById(this.monthListID)');
   this.getDayList = new Function('return document.getElementById(this.dayListID)');
   this.getYearField = new Function('return document.getElementById(this.yearFieldID)');
   this.getCalendar = new Function('return document.getElementById(this.calendarID)');
   this.getFocus = new Function('return document.getElementById(this.focusID)');
   this.getDayTable = new Function('return document.getElementById(this.dayTableID)');
   this.getCalendarLink = new Function('return document.getElementById(this.calendarLinkID)');
   this.getMonthDisplay = new Function('return document.getElementById(this.monthDisplayID)');
   this.isShowing = new Function('return !(this.getCalendar().style.visibility != \'visible\')');

   /* Constructor */
   // Functions used only by the constructor
   function getMonthIndex(MonthAbbr) { // Returns the index (0-11) of the supplied month abbreviation
      for (var MonPos=0;MonPos<MonthNames.length;MonPos++) {
         if (MonthNames[MonPos].substr(0,3).toUpperCase() == MonthAbbr.toUpperCase()) break;
      }
      return MonPos;
   }
   function SetGoodDate(CalObj, Notify, DateName, DateFormat) { // Notifies the user about their bad default date, and sets the current system date
      CalObj.setPicked(Today.getFullYear(), Today.getMonth(), Today.getDate(), DateName, DateFormat);
      if (Notify) alert('WARNING: The supplied date is not in valid \'' + DateFormat + '\' format: ' + DefaultDate + '.\nTherefore, the current system date will be used instead: ' + CalObj.picked.formatted);
   }
   // Main part of the constructor
   if (DefaultDate != '') {
      if ((this.format == 'YYYYMMDD') && (/^(\d{4})(\d{2})(\d{2})$/.test(DefaultDate))) this.setPicked(RegExp.$1, parseInt(RegExp.$2,10)-1, RegExp.$3, DateFormat);
      else {
         // Get the year
         if ((this.format.substr(0,2) == 'YY') && (/^(\d{2,4})(-|\/)/.test(DefaultDate))) { // Year is at the beginning
            var YearPart = GetGoodYear(RegExp.$1);
            // Determine the order of the months and days
            if (/(-|\/)(\w{1,3})(-|\/)(\w{1,3})$/.test(DefaultDate)) {
               var MidPart = RegExp.$2;
               var EndPart = RegExp.$4;
               if (/D$/.test(this.format)) { // Ends with days
                  var DayPart = EndPart;
                  var MonthPart = MidPart;
               }
               else {
                  var DayPart = MidPart;
                  var MonthPart = EndPart;
               }
               MonthPart = (/\d{1,2}/i.test(MonthPart)) ? parseInt(MonthPart,10)-1 : getMonthIndex(MonthPart);
               this.setPicked(YearPart, MonthPart, DayPart, DateName, DateFormat);
            }
            else SetGoodDate(this, true, DateName, DateFormat);
         }
         else if (/(-|\/)(\d{2,4})$/.test(DefaultDate)) { // Year is at the end
            var YearPart = GetGoodYear(RegExp.$2);
            // Determine the order of the months and days
            if (/^(\w{1,3})(-|\/)(\w{1,3})(-|\/)/.test(DefaultDate)) {
               if (this.format.substr(0,1) == 'D') { // Starts with days
                  var DayPart = RegExp.$1;
                  var MonthPart = RegExp.$3;
               }
               else { // Starts with months
                  var MonthPart = RegExp.$1;
                  var DayPart = RegExp.$3;
               }
               MonthPart = (/\d{1,2}/i.test(MonthPart)) ? parseInt(MonthPart,10)-1 : getMonthIndex(MonthPart);
               this.setPicked(YearPart, MonthPart, DayPart, DateName, DateFormat);
            }
            else SetGoodDate(this, true, DateName, DateFormat);
         }
         else SetGoodDate(this, true, DateName, DateFormat);
      }
   }
}

// Main function that creates the form elements
function DateInput(DateName, Required, DateFormat, DefaultDate) 
{
		if (arguments.length == 0) 
			document.writeln('<span style="color:red;font-size:' + FontSize + 'px;font-family:' + FontFamily + ';">ERROR: Missing required parameter in call to \'DateInput\': [name of hidden date field].</span>');
		else 
		{
			// Handle DateFormat
			if (arguments.length < 3) 
			{ // The format wasn't passed in, so use default
				DateFormat = DefaultDateFormat;
				if (arguments.length < 2) 
					Required = false;
			}
			else if (/^(Y{2,4}(-|\/)?)?((MON)|(MM?M?)|(DD?))(-|\/)?((MON)|(MM?M?)|(DD?))((-|\/)Y{2,4})?$/i.test(DateFormat)) 
				DateFormat = DateFormat.toUpperCase();
			else 
			{ // Passed-in DateFormat was invalid, use default format instead
				var AlertMessage = 'WARNING: The supplied date format for the \'' + DateName + '\' field is not valid: ' + DateFormat + '\nTherefore, the default date format will be used instead: ' + DefaultDateFormat;
				DateFormat = DefaultDateFormat;
				if (arguments.length == 4) 
				{ // DefaultDate was passed in with an invalid date format
					var CurrentDate = new storedMonthObject(DateFormat, Today.getFullYear(), Today.getMonth(), Today.getDate());
					AlertMessage += '\n\nThe supplied date (' + DefaultDate + ') cannot be interpreted with the invalid format.\nTherefore, the current system date will be used instead: ' + CurrentDate.formatted;
					DefaultDate = CurrentDate.formatted;
				}
				alert(AlertMessage);
			}
		
			// Define the current date if it wasn't set already
			if (!CurrentDate) 
				var CurrentDate = new storedMonthObject(DateFormat, Today.getFullYear(), Today.getMonth(), Today.getDate());
			
			// Handle DefaultDate
			if (arguments.length < 4) 
			{ // The date wasn't passed in
				DefaultDate = (Required) ? CurrentDate.formatted : ''; // If required, use today's date
			}
		
			// Creates the calendar object!
			eval(DateName + '_Object=new calendarObject(\'' + DateName + '\',\'' + DateFormat + '\',\'' + DefaultDate + '\')');
		
			// Determine initial viewable state of day, year, and calendar icon
			if ((Required) || (arguments.length == 4)) 
			{
				var InitialDate = eval(DateName + '_Object.picked.formatted');
			}
			else 
			{
				var InitialDate = '';
				eval(DateName + '_Object.setPicked(' + Today.getFullYear() + ',' + Today.getMonth() + ',' + Today.getDate() + ',\'' + DateName + '\', \'' + DateFormat + '\')');
			}
			
			// Create the form elements
			with (document) 
			{
				writeln('<input type="hidden" id="' + DateName + '_Hidden_ID" name="' + DateName + '" value="' + InitialDate + '">');
			// Find this form number
			for (var f=0;f<forms.length;f++) 
			{
				for (var e=0;e<forms[f].elements.length;e++) 
				{
					if (typeof forms[f].elements[e].type == 'string') 
					{
						if ((forms[f].elements[e].type == 'hidden') && (forms[f].elements[e].name == DateName)) 
						{
							eval(DateName + '_Object.formNumber='+f);
							break;
						}
					}
				}
			}
			
			writeln('<table cellpadding="0" cellspacing="2">');
				writeln('<tr>');
					writeln('<td valign="middle">');
						writeln('<span id="' + DateName + '_ID" style="position:absolute;visibility:hidden;" onMouseOver="' + DateName + '_Object.handleTimer(true)" onMouseOut="' + DateName + '_Object.handleTimer(false)">');
							writeln('<span id="' + DateName + '_DayTable_ID">');
								writeln(eval(DateName + '_Object.buildCalendar(\'' + DateName + '\', \'' + DateFormat + '\')'));
							writeln('</span>');
						writeln('</span>');
					writeln('</td>');
				writeln('</tr>');
			writeln('</table>');
		}
	}
}