
var weekend = [0,6];
var weekendColor = "#e2e6ef";
var fontface = "Verdana";
var fontsize = 2;

var gNow = new Date();
var ggWinCal;
isNav = (navigator.appName.indexOf("Netscape") != -1) ? true : false;
isIE = (navigator.appName.indexOf("Microsoft") != -1) ? true : false;

Calendar.Months = ["January", "February", "March", "April", "May", "June",
"July", "August", "September", "October", "November", "December"];

// Non-Leap year Month days..
Calendar.DOMonth = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
// Leap year Month days..
Calendar.lDOMonth = [31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];

function Calendar(p_item, p_WinCal, p_month, p_year, p_format, p_item_org) {

	if ((p_month == null) && (p_year == null))	return;

	if (p_WinCal == null)
		this.gWinCal = ggWinCal;
	else
		this.gWinCal = p_WinCal;

	if (p_month == null) {
		this.gMonthName = null;
		this.gMonth = null;
		this.gYearly = true;
	} else {
		this.gMonthName = Calendar.get_month(p_month);
		this.gMonth = new Number(p_month);
		this.gYearly = false;
	}

	this.gYear = p_year;
	this.gFormat = p_format;
	this.gBGColor = "white";
	this.gFGColor = "black";
	this.gTextColor = "black";
	this.gHeaderColor = "black";
	this.gReturnItem = p_item;
}

Calendar.get_month = Calendar_get_month;
Calendar.get_daysofmonth = Calendar_get_daysofmonth;
Calendar.calc_month_year = Calendar_calc_month_year;
Calendar.print = Calendar_print;

function Calendar_get_month(monthNo) {
	return Calendar.Months[monthNo];
}

function Calendar_get_daysofmonth(monthNo, p_year) {
	/*
	Check for leap year ..
	1.Years evenly divisible by four are normally leap years, except for...
	2.Years also evenly divisible by 100 are not leap years, except for...
	3.Years also evenly divisible by 400 are leap years.
	*/
	if ((p_year % 4) == 0) {
		if ((p_year % 100) == 0 && (p_year % 400) != 0)
			return Calendar.DOMonth[monthNo];

		return Calendar.lDOMonth[monthNo];
	} else
		return Calendar.DOMonth[monthNo];
}

function Calendar_calc_month_year(p_Month, p_Year, incr) {
	/*
	Will return an 1-D array with 1st element being the calculated month
	and second being the calculated year
	after applying the month increment/decrement as specified by 'incr' parameter.
	'incr' will normally have 1/-1 to navigate thru the months.
	*/
	var ret_arr = new Array();

	if (incr == -1) {
		// B A C K W A R D
		if (p_Month == 0) {
			ret_arr[0] = 11;
			ret_arr[1] = parseInt(p_Year) - 1;
		}
		else {
			ret_arr[0] = parseInt(p_Month) - 1;
			ret_arr[1] = parseInt(p_Year);
		}
	} else if (incr == 1) {
		// F O R W A R D
		if (p_Month == 11) {
			ret_arr[0] = 0;
			ret_arr[1] = parseInt(p_Year) + 1;
		}
		else {
			ret_arr[0] = parseInt(p_Month) + 1;
			ret_arr[1] = parseInt(p_Year);
		}
	}

	return ret_arr;
}

function Calendar_print() {
	ggWinCal.print();
}

function Calendar_calc_month_year(p_Month, p_Year, incr) {
	/*
	Will return an 1-D array with 1st element being the calculated month
	and second being the calculated year
	after applying the month increment/decrement as specified by 'incr' parameter.
	'incr' will normally have 1/-1 to navigate thru the months.
	*/
	var ret_arr = new Array();

	if (incr == -1) {
		// B A C K W A R D
		if (p_Month == 0) {
			ret_arr[0] = 11;
			ret_arr[1] = parseInt(p_Year) - 1;
		}
		else {
			ret_arr[0] = parseInt(p_Month) - 1;
			ret_arr[1] = parseInt(p_Year);
		}
	} else if (incr == 1) {
		// F O R W A R D
		if (p_Month == 11) {
			ret_arr[0] = 0;
			ret_arr[1] = parseInt(p_Year) + 1;
		}
		else {
			ret_arr[0] = parseInt(p_Month) + 1;
			ret_arr[1] = parseInt(p_Year);
		}
	}

	return ret_arr;
}

// This is for compatibility with Navigator.srv 3, we have to create and discard one object before the prototype object exists.
new Calendar();

Calendar.prototype.getMonthlyCalendarCode = function() {
	var vCode = "";
	var vHeader_Code = "";
	var vData_Code = "";

	// Begin Table Drawing code here..
	vCode = vCode + "<TABLE BORDER=0 BGCOLOR=\"" + this.gBGColor + "\">";

	vHeader_Code = this.cal_header();
	vData_Code = this.cal_data();
	vCode = vCode + vHeader_Code + vData_Code;

	vCode = vCode + "</TABLE>";

	return vCode;
}

Calendar.prototype.show = function() {
	var vCode = "";

	this.gWinCal.document.open();
	// Show navigation buttons
	var prevMMYYYY = Calendar.calc_month_year(this.gMonth, this.gYear, -1);
	var prevMM = prevMMYYYY[0];
	var prevYYYY = prevMMYYYY[1];

	var nextMMYYYY = Calendar.calc_month_year(this.gMonth, this.gYear, 1);
	var nextMM = nextMMYYYY[0];
	var nextYYYY = nextMMYYYY[1];

	// Setup the page...
	this.wwrite("<html>");
	this.wwrite("<head><title>Calendar</title>");
	this.wwrite("</head>");
	this.wwrite("<link rel='STYLESHEET' type='text/css' href='template/styles.css'>");
	this.wwrite("<body " +
		"link=\"" + this.gLinkColor + "\" " +
		"vlink=\"" + this.gLinkColor + "\" " +
		"alink=\"" + this.gLinkColor + "\" " +
		"text=\"" + this.gTextColor + "\">");

this.wwrite("<div style='position:absolute;  left:3px; top:5px; width:210px; height:120px; z-index:1;align=left;'>");
this.wwrite("<table width=100% cellspacing=0 cellpadding=0 border=0 align=center>");
this.wwrite("<tr>");
this.wwrite("<td width=100% align=right><img src='images/a.gif' width=1 height=1 border=0><input onClick=\"self.opener.setDateVal('','"+p_item_org+"');window.close();\" type=\"button\" name=\"clear\" value=\"Clear\"></td>");
this.wwrite("</tr>");
this.wwrite("<tr>");
this.wwrite("<td width=100% align=right><img src='images/a.gif' width=1 height=10 border=0></td>");
this.wwrite("</tr>");
this.wwrite("<tr class='evenrow'><td>");
	this.wwriteA("<TABLE WIDTH='100%' align=center BORDER=0 CELLSPACING=0 CELLPADDING=0><TR class=\"bluerow\"><TD ALIGN=left height=20>");
	this.wwrite("<img src='images/a.gif' width=10 height=1 border=0><A HREF=\"" +
		"javascript:window.opener.Build(" +
		"'" + this.gReturnItem + "', '" + prevMM + "', '" + prevYYYY + "', '" + this.gFormat + "'" +
		",'');" +
		"\"><img src='images/cal_aro.gif' width=13 height=12 border=0><\/A></TD><TD ALIGN=center><b>");
			this.wwriteA( this.gMonthName + "</b></TD><TD ALIGN=right>");
	this.wwrite("<A HREF=\"" +
		"javascript:window.opener.Build(" +
		"'" + this.gReturnItem + "', '" + nextMM + "', '" + nextYYYY + "', '" + this.gFormat + "'" +
		",'');" +
		"\"><img src='images/cal_aro1.gif' width=13 height=12 border=0><\/A><img src='images/a.gif' width=10 height=1 border=0>");
	this.wwriteA("</TD></TR>");



	this.wwrite("<TR class=\"bluerow\"><TD ALIGN=left height=25>");
//	this.wwrite("<img src='images/a.gif' border=0 height=1 width=50>");
	this.wwrite("<img src='images/a.gif' width=10 height=1 border=0><A HREF=\""  +
		"javascript:window.opener.Build(" +
		"'" + this.gReturnItem + "', '" + this.gMonth + "', '" + (parseInt(this.gYear)-1) + "', '" + this.gFormat + "'" +
		",'');" +
		"\" class=\"blktext1\"><img src='images/cal_aro.gif' width=13 height=12 border=0><\/A></TD>");
	this.wwrite("<TD ALIGN=center><b>" + this.gYear +"</b></td><TD ALIGN=right>");
	this.wwrite("<A HREF=\"" +
		"javascript:window.opener.Build(" +
		"'" + this.gReturnItem + "', '" + this.gMonth + "', '" + (parseInt(this.gYear)+1) + "', '" + this.gFormat + "'" +
		",'');" +
		"\"><img src='images/cal_aro1.gif' width=13 height=12 border=0><\/A><img src='images/a.gif' width=10 height=1 border=0></TD></TR></TABLE>");

	// Get the complete calendar code for the month..
	vCode = this.getMonthlyCalendarCode();
	this.wwrite(vCode);

this.wwrite("</td></tr>");
this.wwrite("</table>");
this.wwrite("</div>");
this.wwrite("</body></html>");
	this.gWinCal.document.close();
}

Calendar.prototype.showY = function() {
	var vCode = "";
	var i;
	var vr, vc, vx, vy;		// Row, Column, X-coord, Y-coord
	var vxf = 285;			// X-Factor
	var vyf = 200;			// Y-Factor
	var vxm = 10;			// X-margin
	var vym;				// Y-margin
	if (isIE)	vym = 75;
	else if (isNav)	vym = 25;

	this.gWinCal.document.open();

	this.wwrite("<html>");
	this.wwrite("<head><title>Calendar</title>");
	this.wwrite("<style type='text/css'>\n<!--");
	for (i=0; i<12; i++) {
		vc = i % 3;
		if (i>=0 && i<= 2)	vr = 0;
		if (i>=3 && i<= 5)	vr = 1;
		if (i>=6 && i<= 8)	vr = 2;
		if (i>=9 && i<= 11)	vr = 3;

		vx = parseInt(vxf * vc) + vxm;
		vy = parseInt(vyf * vr) + vym;

		this.wwrite(".lclass" + i + " {position:absolute;top:" + vy + ";left:" + vx + ";}");
	}
	this.wwrite("-->\n</style>");
	this.wwrite("</head>");

	this.wwrite("<body " +
		"link=\"" + this.gLinkColor + "\" " +
		"vlink=\"" + this.gLinkColor + "\" " +
		"alink=\"" + this.gLinkColor + "\" " +
		"text=\"" + this.gTextColor + "\">");
	this.wwrite("<FONT FACE='" + fontface + "' SIZE=2><B>");
	this.wwrite("Year : " + this.gYear);
	this.wwrite("</B>");

	// Show navigation buttons
	var prevYYYY = parseInt(this.gYear) - 1;
	var nextYYYY = parseInt(this.gYear) + 1;

	this.wwrite("<TABLE WIDTH='100%' BORDER=0 CELLSPACING=1 CELLPADDING=1><TR class='evenrow'><TD ALIGN=center>");
	this.wwrite("[<A HREF=\"" +
		"javascript:window.opener.Build(" +
		"'" + this.gReturnItem + "', null, '" + prevYYYY + "', '" + this.gFormat + "'" +
		",'');" +
		"\" alt='Prev Year'><<<\/A>]</TD><TD ALIGN=center>");
	this.wwrite("[<A HREF=\"javascript:window.print();\">Print</A>]</TD><TD ALIGN=center>");
	this.wwrite("[<A HREF=\"" +
		"javascript:window.opener.Build(" +
		"'" + this.gReturnItem + "', null, '" + nextYYYY + "', '" + this.gFormat + "'" +
		",'');" +
		"\">>><\/A>]</TD></TR></TABLE>");

	// Get the complete calendar code for each month..
	var j;
	for (i=11; i>=0; i--) {
		if (isIE)
			this.wwrite("<DIV ID=\"layer" + i + "\" CLASS=\"lclass" + i + "\">");
		else if (isNav)
			this.wwrite("<LAYER ID=\"layer" + i + "\" CLASS=\"lclass" + i + "\">");

		this.gMonth = i;
		this.gMonthName = Calendar.get_month(this.gMonth);
		vCode = this.getMonthlyCalendarCode();
		this.wwrite(this.gMonthName + "/" + this.gYear + "<BR>");
		this.wwrite(vCode);

		if (isIE)
			this.wwrite("</DIV>");
		else if (isNav)
			this.wwrite("</LAYER>");
	}

	this.wwrite("</font><BR></body></html>");
	this.gWinCal.document.close();
}

Calendar.prototype.wwrite = function(wtext) {
	this.gWinCal.document.writeln(wtext);
}

Calendar.prototype.wwriteA = function(wtext) {
	this.gWinCal.document.write(wtext);
}

Calendar.prototype.cal_header = function() {
	var vCode = "";

	vCode = vCode + "<TABLE WIDTH='100%' BORDER=1 bordercolor='darkblue' CELLSPACING=0 CELLPADDING=0><TR class='weekdays'>";
	vCode = vCode + "<TD ALIGN=CENTER WIDTH='15%'>Su</TD>";
	vCode = vCode + "<TD ALIGN=CENTER WIDTH='14%'>Mo</TD>";
	vCode = vCode + "<TD ALIGN=CENTER WIDTH='14%'>Tu</TD>";
	vCode = vCode + "<TD ALIGN=CENTER WIDTH='14%'>We</TD>";
	vCode = vCode + "<TD ALIGN=CENTER WIDTH='14%'>Th</TD>";
	vCode = vCode + "<TD ALIGN=CENTER WIDTH='14%'>Fr</TD>";
	vCode = vCode + "<TD ALIGN=CENTER WIDTH='15%'>Sa</TD>";
	vCode = vCode + "</TR>";

	return vCode;
}

Calendar.prototype.cal_data = function() {

	var vDate = new Date();
	vDate.setDate(1);
	vDate.setMonth(this.gMonth);
	vDate.setFullYear(this.gYear);

	var vFirstDay=vDate.getDay();
	var vDay=1;
	var vLastDay=Calendar.get_daysofmonth(this.gMonth, this.gYear);
	var vOnLastDay=0;
	var vCode = "";

	/*
	Get day for the 1st of the requested month/year..
	Place as many blank cells before the 1st day of the month as necessary.
	*/

	vCode = vCode + "<TR>";
	for (i=0; i<vFirstDay; i++) {
		vCode = vCode + "<TD ALIGN=CENTER" + this.write_weekend_string(i) + "><FONT SIZE='2' FACE='" + fontface + "'>&nbsp;</FONT></TD>";
	}

	// Write rest of the 1st week
	for (j=vFirstDay; j<7; j++) {
		vCode = vCode + "<TD ALIGN=CENTER" + this.write_weekend_string(j) + "><FONT SIZE='2' FACE='" + fontface + "'>" +
			"<A HREF='#' " +
				"onClick=\"self.opener.setDateVal('" + this.format_data(vDay) + "','"+p_item_org+"');window.close();\">" +
				this.format_day(vDay) +
			"</A>" +
			"</FONT></TD>";
		vDay=vDay + 1;
	}
	vCode = vCode + "</TR>";

	// Write the rest of the weeks
	for (k=2; k<7; k++) {
		vCode = vCode + "<TR>";

		for (j=0; j<7; j++) {
			vCode = vCode + "<TD ALIGN=CENTER" + this.write_weekend_string(j) + "><FONT SIZE='2' FACE='" + fontface + "'>" +
				"<A HREF='#' " +
					"onClick=\"self.opener.setDateVal('"+this.format_data(vDay) + "','"+p_item_org+"');window.close();\">" +
				this.format_day(vDay) +
				"</A>" +
				"</FONT></TD>";
			vDay=vDay + 1;

			if (vDay > vLastDay) {
				vOnLastDay = 1;
				break;
			}
		}

		if (j == 6)
			vCode = vCode + "</TR>";
		if (vOnLastDay == 1)
			break;
	}

	// Fill up the rest of last week with proper blanks, so that we get proper square blocks
	for (m=1; m<(7-j); m++) {
		if (this.gYearly)
			vCode = vCode + "<TD ALIGN=CENTER" + this.write_weekend_string(j+m) +
			"><FONT SIZE='2' FACE='" + fontface + "' COLOR='gray'> </FONT></TD>";
		else
			vCode = vCode + "<TD ALIGN=CENTER" + this.write_weekend_string(j+m) +
			"><FONT SIZE='2' FACE='" + fontface + "' COLOR='gray'>&nbsp;</FONT></TD>";
	}

	return vCode;
}

Calendar.prototype.format_day = function(vday) {
	var vNowDay = gNow.getDate();
	var vNowMonth = gNow.getMonth();
	var vNowYear = gNow.getFullYear();

	if (vday == vNowDay && this.gMonth == vNowMonth && this.gYear == vNowYear)
		return ("<FONT COLOR=\"RED\"><B>" + vday + "</B></FONT>");
	else
		return (vday);
}

Calendar.prototype.write_weekend_string = function(vday) {
	var i;

	// Return special formatting for the weekend day.
	for (i=0; i<weekend.length; i++) {
		if (vday == weekend[i])
			return (" BGCOLOR=\"" + weekendColor + "\"");
	}

	return "";
}

Calendar.prototype.format_data = function(p_day) {
	var vData;
	var vMonth = 1 + this.gMonth;
	vMonth = (vMonth.toString().length < 2) ? "0" + vMonth : vMonth;
	var vMon = Calendar.get_month(this.gMonth).substr(0,3);
	var vFMon = Calendar.get_month(this.gMonth);
	var vY4 = new String(this.gYear);
	var vY2 = new String(this.gYear.substr(2,2));
	var vDD = (p_day.toString().length < 2) ? "0" + p_day : p_day;

	switch (this.gFormat) {
		case "MM\/DD\/YYYY" :
			vData = vMonth + "\/" + vDD + "\/" + vY4;
			break;
		case "MM\/DD\/YY" :
			vData = vMonth + "\/" + vDD + "\/" + vY2;
			break;
		case "MM-DD-YYYY" :
			vData = vMonth + "-" + vDD + "-" + vY4;
			break;
		case "MM-DD-YY" :
			vData = vMonth + "-" + vDD + "-" + vY2;
			break;

		case "DD\/MON\/YYYY" :
			vData = vDD + "\/" + vMon + "\/" + vY4;
			break;

		case "DD\/MON\/YY" :
			vData = vDD + "\/" + vMon + "\/" + vY2;
			break;
		case "DD-MON-YYYY" :
			vData = vDD + "-" + vMon + "-" + vY4;
			break;
		case "DD-MON-YY" :
			vData = vDD + "-" + vMon + "-" + vY2;
			break;

		case "DD\/MONTH\/YYYY" :
			vData = vDD + "\/" + vFMon + "\/" + vY4;
			break;
		case "DD\/MONTH\/YY" :
			vData = vDD + "\/" + vFMon + "\/" + vY2;
			break;
		case "DD-MONTH-YYYY" :
			vData = vDD + "-" + vFMon + "-" + vY4;
			break;
		case "DD-MONTH-YY" :
			vData = vDD + "-" + vFMon + "-" + vY2;
			break;

		case "DD\/MM\/YYYY" :
			vData = vDD + "\/" + vMonth + "\/" + vY4;
			break;
		case "DD\/MM\/YY" :
			vData = vDD + "\/" + vMonth + "\/" + vY2;
			break;
		case "DD-MM-YYYY" :
			vData = vDD + "-" + vMonth + "-" + vY4;
			break;
		case "DD-MM-YY" :
			vData = vDD + "-" + vMonth + "-" + vY2;
			break;

		default :
			vData = vMonth + "\/" + vDD + "\/" + vY4;
	}

	return vData;
}

function Build(p_item, p_month, p_year, p_format,p_item_org) {
	var p_WinCal = ggWinCal;
	gCal = new Calendar(p_item, p_WinCal, p_month, p_year, p_format,p_item_org);

	// Customize your Calendar here..
	gCal.gBGColor="white";
	gCal.gLinkColor="blue";
	gCal.gTextColor="blue";
	gCal.gHeaderColor="blue";

	// Choose appropriate show function
	if (gCal.gYearly)	gCal.showY();
	else	gCal.show();
}

function show_calendar() {
	/*
		p_month : 0-11 for Jan-Dec; 12 for All Months.
		p_year	: 4-digit year
		p_format: Date format (mm/dd/yyyy, dd/mm/yy, ...)
		p_item	: Return Item.
	*/
	fieldname = arguments[0];
	p_item_org = fieldname
	p_item = fieldname.substring(fieldname.indexOf(".") + 1, fieldname.length);
	if (arguments[1] == null)
		p_month = new String(gNow.getMonth());
	else
		p_month = arguments[1];
	if (arguments[2] == "" || arguments[2] == null)
		p_year = new String(gNow.getFullYear().toString());
	else
		p_year = arguments[2];
	if (arguments[3] == null)
		p_format = "DD-MON-YYYY";
		//p_format = "DD/MM/YYYY";
		//p_format = "MM/DD/YYYY";
	else
		p_format = arguments[3];


	//var x = parseInt(document.forms[1].MouseX.value);
	//var y = parseInt(document.forms[1].MouseY.value);
	var x = 300;
	var y = 100;
	vWinCal = window.open("", "Calendar", "width=215,height=220,status=no,resizable=no, top=200,left=350");

/*	if (y > 400)
	{
		if(x < 770)
		{
			vWinCal = window.open("", "Calendar", "width=210,height=192,status=no,resizable=no, top=" + eval((parseInt(y)-125)) + ", left= " + eval(x) );
		}
		else
		{
			vWinCal = window.open("", "Calendar", "width=210,height=192,status=no,resizable=no, top=" + eval((parseInt(y)-125)) + ", left= " + eval((parseInt(x)-225)) );
		}
	}
	else
	{
		if(x < 770)
		{
			vWinCal = window.open("", "Calendar", "width=210,height=192,status=no,resizable=no, top=" + eval((parseInt(y)+100)) + ", left= " + eval(x) );
		}
		else
		{
			vWinCal = window.open("", "Calendar", "width=210,height=192,status=no,resizable=no, top=" + eval((parseInt(y)+100)) + ", left= " + eval((parseInt(x)-225)) );
		}
	}

	vWinCal = window.open("", "Calendar", "width=210,height=192,status=no,resizable=no, top=" + eval((parseInt(y)-125)) + ", left= " + eval((parseInt(x)-225)) );*/
	vWinCal.opener = self;
	ggWinCal = vWinCal;

	Build(p_item, p_month, p_year, p_format,p_item_org);
}

/*
Yearly Calendar Code Starts here
*/
function show_yearly_calendar(p_item, p_year, p_format) {
	// Load the defaults..
	if (p_year == null || p_year == "")
		p_year = new String(gNow.getFullYear().toString());
	if (p_format == null || p_format == "")
		p_format = "MM-DD-YYYY";

	var vWinCal = window.open("", "Calendar", "scrollbars=yes");
	vWinCal.opener = self;
	ggWinCal = vWinCal;

	Build(p_item, null, p_year, p_format,null);
}



// Detect if the browser is IE or not.
// If it is not IE, we assume that the browser is NS.
var IE = document.all?true:false

// If NS -- that is, !IE -- then set up for mouse capture
if (!IE) document.captureEvents(Event.MOUSEMOVE)

// Set-up to use getMouseXY function onMouseMove
//document.onmousemove = getMouseXY;

// Temporary variables to hold mouse x-y pos.s
var tempX = 0
var tempY = 0

// Main function to retrieve mouse x-y pos.s

/*function getMouseXY(e) {
  if (IE) { // grab the x-y pos.s if browser is IE
    tempX = event.clientX + document.body.scrollLeft
    tempY = event.clientY + document.body.scrollTop
  } else {  // grab the x-y pos.s if browser is NS
    tempX = e.pageX
    tempY = e.pageY
  }
  // catch possible negative values in NS4
  if (tempX < 0){tempX = 0}
  if (tempY < 0){tempY = 0}
  // show the position values in the form named Show
  // in the text fields named MouseX and MouseY

  document.forms[1].MouseX.value = tempX
  document.forms[1].MouseY.value = tempY

  return true
}

*/


	function isDate (psDate, psFormat)
	{
        // for now just return true when empty value
		if ( psDate == null  ||  psDate.length == 0 ) {
			return true;
		}

		return ( parseDate( psDate, psFormat ) != null );
	}

	function parseDate (psDate, psFormat)
	{
        // The pattern codes used in the format are case-sensitive:
        // d = day
        // M = month
        // Y = year

		// only one one-character delimiter allowed

		psDate = trim( psDate );
		psFormat = trim( psFormat );

		if ( psDate.length > psFormat.length ) {
			return null;
		}

		var liYearStart, liYearEnd;
		var liMonthStart, liMonthEnd;
		var liDayStart, liDayEnd;
		var lcDelimiter;

		for (var i=0; i<psFormat.length; i++) {
			if ( psFormat.charAt(i) == 'Y' ) {
				if ( liYearStart == null ) {
					liYearStart = i;
				}
				else {
					liYearEnd = i;
				}
			}
			else if ( psFormat.charAt(i) == 'M' ) {
				if ( liMonthStart == null ) {
					liMonthStart = i;
				}
				else {
					liMonthEnd = i;
				}
			}
			else if ( psFormat.charAt(i) == 'd' ) {
				if ( liDayStart == null ) {
					liDayStart = i;
				}
				else {
					liDayEnd = i;
				}
			}
			else {
				lcDelimiter = psFormat.charAt(i);
			}
		}

		// allow YY or YYYY
		if ( liYearEnd - liYearStart != 1  &&  liYearEnd - liYearStart != 3 ) {
			return null;
		}
		// allow M, MM or MMM
		if ( liMonthEnd - liMonthStart != 1  &&  liMonthEnd - liMonthStart != 2  &&  liMonthEnd - liMonthStart != 0 ) {
			return null;
		}
		// allow d or dd
		if ( liDayEnd - liDayStart != 1  &&  liDayEnd - liDayStart != 0 ) {
			return null;
		}

		var lsPiece;
		var liIndex;
		var lDate = new Date();
		var liYear, liMonth, liDay;

		var lsDay, lsMonth, lsYear;
		var liDelta;

		if ( liDayStart < liMonthStart  &&  liDayStart < liYearStart ) {
			// day first
			lsDay = processDay( psDate, liDayStart, liDayEnd );
			liDelta = (liDayEnd - liDayStart + 1) - lsDay.length;
			if ( liDelta > 0 ) {
				liMonthStart -= liDelta;
				liMonthEnd -= liDelta;
				liYearStart -= liDelta;
				liYearEnd -= liDelta;
			}

			if ( liMonthStart < liYearStart ) {
				// month second
				lsMonth = processMonth( psDate, liMonthStart, liMonthEnd );
				liDelta = (liMonthEnd - liMonthStart + 1) - lsMonth.length;
				if ( liDelta > 0 ) {
					liYearStart -= liDelta;
					liYearEnd -= liDelta;
				}

				// year third
				lsYear = processYear( psDate, liYearStart, liYearEnd );
				liDelta = (liYearEnd - liYearStart + 1) - lsYear.length;
				if ( liDelta > 0 ) {
					// year must match format size exactly
					return null;
				}
			}
			else {
				// year second
				lsYear = processYear( psDate, liYearStart, liYearEnd );
				liDelta = (liYearEnd - liYearStart + 1) - lsYear.length;
				if ( liDelta > 0 ) {
					// year must match format size exactly
					return null;
				}

				// month third
				lsMonth = processMonth( psDate, liMonthStart, liMonthEnd );
			}
		}
		else if ( liMonthStart < liDayStart  &&  liMonthStart < liYearStart ) {
			// month first
			lsMonth = processMonth( psDate, liMonthStart, liMonthEnd );
			liDelta = (liMonthEnd - liMonthStart + 1) - lsMonth.length;
			if ( liDelta > 0 ) {
				liDayStart -= liDelta;
				liDayEnd -= liDelta;
				liYearStart -= liDelta;
				liYearEnd -= liDelta;
			}

			if ( liDayStart < liYearStart ) {
				// day second
				lsDay = processDay( psDate, liDayStart, liDayEnd );
				liDelta = (liDayEnd - liDayStart + 1) - lsDay.length;
				if ( liDelta > 0 ) {
					liYearStart -= liDelta;
					liYearEnd -= liDelta;
				}

				// year third
				lsYear = processYear( psDate, liYearStart, liYearEnd );
				liDelta = (liYearEnd - liYearStart + 1) - lsYear.length;
				if ( liDelta > 0 ) {
					// year must match format size exactly
					return null;
				}
			}
			else {
				// year second
				lsYear = processYear( psDate, liYearStart, liYearEnd );
				liDelta = (liYearEnd - liYearStart + 1) - lsYear.length;
				if ( liDelta > 0 ) {
					// year must match format size exactly
					return null;
				}

				// day third
				lsDay = processDay( psDate, liDayStart, liDayEnd );
			}
		}
		else {
			// year first
			lsYear = processYear( psDate, liYearStart, liYearEnd );
			liDelta = (liYearEnd - liYearStart + 1) - lsYear.length;
			if ( liDelta > 0 ) {
				// year must match format size exactly
				return null;
			}

			if ( liDayStart < liMonthStart ) {
				// day second
				lsDay = processDay( psDate, liDayStart, liDayEnd );
				liDelta = (liDayEnd - liDayStart + 1) - lsDay.length;
				if ( liDelta > 0 ) {
					liMonthStart -= liDelta;
					liMonthEnd -= liDelta;
				}

				// month third
				lsMonth = processMonth( psDate, liMonthStart, liMonthEnd );
				liDelta = (liMonthEnd - liMonthStart + 1) - lsMonth.length;
				if ( liDelta > 0 ) {
					// year must match format size exactly
					return null;
				}
			}
			else {
				// month second
				lsMonth = processMonth( psDate, liMonthStart, liMonthEnd );
				liDelta = (liMonthEnd - liMonthStart + 1) - lsMonth.length;
				if ( liDelta > 0 ) {
					liDayStart -= liDelta;
					liDayEnd -= liDelta;
				}

				// day third
				lsDay = processDay( psDate, liDayStart, liDayEnd );
			}
		}

		// set Year
		liYear = parseInt( trimLeadingZeros( lsYear ) );
		lDate.setYear( liYear );

		// set Month
		if ( lsMonth.length == 3 ) {
			liMonth = monthStringToInt( lsMonth );
		}
		else {
			liMonth = parseInt( trimLeadingZeros( lsMonth ) ) - 1;
		}

		lDate.setMonth( liMonth );

		// process Day
		liDay = parseInt( trimLeadingZeros( lsDay ) );
		lDate.setDate( liDay );

		// this verifies that Date() didn't wrap around a big number
		if ( liYear >= 100  &&  lDate.getFullYear() != liYear ) {
			return null;
		}
		else if ( liYear < 100  &&  lDate.getYear() != liYear ) {
			return null;
		}
		if ( lDate.getMonth() != liMonth ) {
			return null;
		}
		if ( lDate.getDate() != liDay ) {
			return null;
		}

		return lDate;
	}

	function processDay (psDate, piStart, piEnd)
	{
		for (var i=piStart; i<=piEnd; i++) {
			if ( psDate.charAt(i) < '0' || psDate.charAt(i) > '9' ) {
				return psDate.substring( piStart, i );
			}
		}

		return psDate.substring( piStart, piEnd + 1 );
	}

	function processMonth (psDate, piStart, piEnd)
	{
		if ( piEnd - piStart != 2 ) {
			for (var i=piStart; i<=piEnd; i++) {
				if ( psDate.charAt(i) < '0' || psDate.charAt(i) > '9' ) {
					return psDate.substring( piStart, i );
				}
			}
		}

		return psDate.substring( piStart, piEnd + 1 );
	}

	function processYear (psDate, piStart, piEnd)
	{
		for (var i=piStart; i<=piEnd; i++) {
			if ( psDate.charAt(i) < '0' || psDate.charAt(i) > '9' ) {
				return psDate.substring( piStart, i );
			}
		}

		return psDate.substring( piStart, piEnd + 1 );
	}

	function monthStringToInt (psMonth)
	{
		psMonth = psMonth.toLowerCase();

		if ( psMonth == "jan" ) {
			return 0;
		}
		else if ( psMonth == "feb" ) {
			return 1;
		}
		else if ( psMonth == "mar" ) {
			return 2;
		}
		else if ( psMonth == "apr" ) {
			return 3;
		}
		else if ( psMonth == "may" ) {
			return 4;
		}
		else if ( psMonth == "jun" ) {
			return 5;
		}
		else if ( psMonth == "jul" ) {
			return 6;
		}
		else if ( psMonth == "aug" ) {
			return 7;
		}
		else if ( psMonth == "sep" ) {
			return 8;
		}
		else if ( psMonth == "oct" ) {
			return 9;
		}
		else if ( psMonth == "nov" ) {
			return 10;
		}
		else if ( psMonth == "dec" ) {
			return 11;
		}

		return null;
	}



