var weekend = [0];
var weekendColor = "#e0e0e0";
var fontface = "Verdana";
var fontsize = 2;

var DateArray= new Array(); 
var yforArray= new Array(); 

var gNow = new Date();
var ggWinCal;
var gTime = "";
var gDate= "";

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) {
	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 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=1 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();
   
	// Setup the page...
	this.wwrite("<html>");
	this.wwrite("<head><title>Calendar</title>");
	this.wwrite("</head>");

	this.wwrite("<body bgcolor=\"#D6D2C7\" " + 
		"link=\"" + this.gLinkColor + "\" " + 
		"vlink=\"" + this.gLinkColor + "\" " +
		"alink=\"" + this.gLinkColor + "\" " +
		"text=\"" + this.gTextColor + "\">");
	this.wwriteA("<FONT FACE='" + fontface + "' SIZE=2><B>");
	this.wwriteA(this.gMonthName + " " + this.gYear);
	this.wwriteA("</B><BR>");

	// 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];
	
	
	this.wwrite("<TABLE WIDTH='100%' BORDER=1 CELLSPACING=0 CELLPADDING=0 BGCOLOR='#e0e0e0'><TR><TD ALIGN=center>");
	this.wwrite("<font size=\"1\"><A HREF=\"" +
		"javascript:window.opener.Build(" + 
		"'" + this.gReturnItem + "', '" + this.gMonth + "', '" + (parseInt(this.gYear)-1) + "', '" + this.gFormat + "'" +
		");" +
		"\"><B>Prev Yr</B><\/A></font></TD><TD ALIGN=center>");
	this.wwrite("<font size=\"1\"><A HREF=\"" +
		"javascript:window.opener.Build(" + 
		"'" + this.gReturnItem + "', '" + prevMM + "', '" + prevYYYY + "', '" + this.gFormat + "'" +
		");" +
		"\"><B>Prev Mth</B><\/A></font></TD><TD ALIGN=center>");
	//this.wwrite("[<A HREF=\"javascript:window.print();\">Print</A>]</TD><TD ALIGN=center>");
	this.wwrite("<font size=\"1\"><A HREF=\"" +
		"javascript:window.opener.Build(" + 
		"'" + this.gReturnItem + "', '" + nextMM + "', '" + nextYYYY + "', '" + this.gFormat + "'" +
		");" +
		"\"><B>Next Mth</B><\/A></font></TD><TD ALIGN=center>");
	this.wwrite("<font size=\"1\"><A HREF=\"" +
		"javascript:window.opener.Build(" + 
		"'" + this.gReturnItem + "', '" + this.gMonth + "', '" + (parseInt(this.gYear)+1) + "', '" + this.gFormat + "'" +
		");" +
		"\"><B>Next Yr</B><\/A></font></TD></TR></TABLE><BR>");
	// Get the complete calendar code for the month..
	 
	vCode = this.getMonthlyCalendarCode();
	
	this.wwrite(vCode);
	 
	//Changed by Madhup on 05/03/2007 to handle timestamp.Start
	//this.wwrite("</font></body></html>");
	var date = new Date()
	var hour = (date.getHours() <= 9)?("0"+date.getHours()):date.getHours();
	var minutes = date.getMinutes() <= 9?("0"+date.getMinutes()):date.getMinutes();
	var seconds = date.getSeconds() <=9?("0"+date.getSeconds()):date.getSeconds()
	
	this.wwrite("<script> var prevSelTd =null;function setSelectionTd( obj ){	if( obj.className != 'selectedDate' )	{		obj.className = 'selectedDate';obj.childNodes.item(0).firstChild.className  = 'selectedDate'	}	if( prevSelTd != null && prevSelTd != obj )	{		prevSelTd.className = 'deSelectedDate'; prevSelTd.childNodes.item(0).firstChild.className  = 'deSelectedDate'	}	prevSelTd = obj;} </script>");
	this.wwrite("<style>.selectedDate{color: #FFFFFF; background-color: darkblue;} .deSelectedDate{color:black;background-color: #FFFFFF;} </style>");
	
	this.wwrite("</font>");

	this.wwrite("</body></html>");
	
	//Changed by Madhup on 05/03/2007 to handle timestamp.End
	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><BR>");

	// Show navigation buttons
	var prevYYYY = parseInt(this.gYear) - 1;
	var nextYYYY = parseInt(this.gYear) + 1;
	
	this.wwrite("<TABLE WIDTH='100%' BORDER=1 CELLSPACING=0 CELLPADDING=0 BGCOLOR='#e0e0e0'><TR><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><BR>");

	// 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 + "<TR>";
	vCode = vCode + "<TD WIDTH='14%'><FONT SIZE='2' FACE='" + fontface + "' COLOR='" + this.gHeaderColor + "'><B>Sun</B></FONT></TD>";
	vCode = vCode + "<TD WIDTH='14%'><FONT SIZE='2' FACE='" + fontface + "' COLOR='" + this.gHeaderColor + "'><B>Mon</B></FONT></TD>";
	vCode = vCode + "<TD WIDTH='14%'><FONT SIZE='2' FACE='" + fontface + "' COLOR='" + this.gHeaderColor + "'><B>Tue</B></FONT></TD>";
	vCode = vCode + "<TD WIDTH='14%'><FONT SIZE='2' FACE='" + fontface + "' COLOR='" + this.gHeaderColor + "'><B>Wed</B></FONT></TD>";
	vCode = vCode + "<TD WIDTH='14%'><FONT SIZE='2' FACE='" + fontface + "' COLOR='" + this.gHeaderColor + "'><B>Thu</B></FONT></TD>";
	vCode = vCode + "<TD WIDTH='14%'><FONT SIZE='2' FACE='" + fontface + "' COLOR='" + this.gHeaderColor + "'><B>Fri</B></FONT></TD>";
	vCode = vCode + "<TD WIDTH='16%'><FONT SIZE='2' FACE='" + fontface + "' COLOR='" + this.gHeaderColor + "'><B>Sat</B></FONT></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 WIDTH='14%'" + this.write_weekend_string(i) + "><FONT SIZE='2' FACE='" + fontface + "'> </FONT></TD>";
	}
	
	for (j=vFirstDay; j<7; j++) {
		//@Vidhya on 28/10/09[for Mozilla compatibility] Start
		//vCode = vCode + "<TD onClick ='window.opener.gDate=this.id;setSelectionTd(this);' class ='' id ='"+this.format_data(vDay)+"' WIDTH='14%'" + this.write_weekend_string(j) + "><FONT SIZE='2' FACE='" + fontface + "'>" + 
			//"<A HREF='#' class =''" + 
		vCode = vCode + "<TD class ='' id ='"+this.format_data(vDay)+"' WIDTH='14%'" + this.write_weekend_string(j) + "><FONT SIZE='2' FACE='" + fontface + "'>" + 
			"<A HREF='javascript:void(0)' class =''" + 
					"onDblClick=\"window.opener.assignDate('"+this.format_data(vDay)+"');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++) {
		//@Vidhya on 28/10/09[for mozilla compatibility] Start
		//vCode = vCode + "<TD onClick ='window.opener.gDate=this.id;setSelectionTd(this);' class ='' id ='"+this.format_data(vDay)+"' WIDTH='14%'" + this.write_weekend_string(j) + "><FONT SIZE='2' FACE='" + fontface + "'>" + 
			//"<A HREF='#' class =''" + 
		vCode = vCode + "<TD class ='' id ='"+this.format_data(vDay)+"' WIDTH='14%'" + this.write_weekend_string(j) + "><FONT SIZE='2' FACE='" + fontface + "'>" + 
			"<A HREF='javascript:void(0)' class =''" + 
					"onDblClick=\"window.opener.assignDate('"+this.format_data(vDay)+"');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 WIDTH='14%'" + this.write_weekend_string(j+m) + 
			"><FONT SIZE='2' FACE='" + fontface + "' COLOR='gray'> </FONT></TD>";
		else
			vCode = vCode + "<TD WIDTH='14%'" + this.write_weekend_string(j+m) + 
			"><FONT SIZE='2' FACE='" + fontface + "' COLOR='gray'>" + m + "</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).toUpperCase();
	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-MMM-yyyy" :
			this.gFormat = "DD-MON-YYYY";
		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;
		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) {
	var p_WinCal = ggWinCal;
	gCal = new Calendar(p_item, p_WinCal, p_month, p_year, p_format);

	// Customize your Calendar here..
	gCal.gBGColor="white";
	gCal.gLinkColor="black";
	gCal.gTextColor="black";
	gCal.gHeaderColor="darkgreen";
	gDate = gCal.format_data( new Date().getDate() );

	// 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.
	*/
	p_item = arguments[0]; // text box which will contain date
	if (arguments[1] == "" || 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] == "" || arguments[3] == null)
		p_format = "DD/MM/YY";
	else
		p_format = arguments[3];
	vWinCal = window.open("", "Calendar", 
		"width=250,height=220,status=no,resizable=no,top="+calendertop+",left="+calenderleft);

	global_date_type = arguments[4];

	vWinCal.opener = self;
	ggWinCal = vWinCal;


	Build(p_item, p_month, p_year, p_format);
	return false ;
}
/*
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 = "DD-MON-YYYY";

	var vWinCal = window.open("", "Calendar", "scrollbars=yes");
	vWinCal.opener = self;
	ggWinCal = vWinCal;

	Build(p_item, null, p_year, p_format);
}