
var weekend = [0,6];
var fontsize = 2;
var weekendColor = "#e0e0e0"; 


var gNow = new Date();
var vNowDay = gNow.getDate();
var vNowMonth = gNow.getMonth();
var vNowYear = gNow.getFullYear();
var p_day;

var ggWinCal;
isNav = (navigator.appName.indexOf("Netscape") != -1) ? true : false;
isIE = (navigator.appName.indexOf("Microsoft") != -1) ? true : false;

Calendar.First_Year=2010;
Calendar.Last_Year=2011;

// 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;
	}
	switch(p_year.length)
	{
	case 1: p_year = "200"+p_year;break;
	case 2: p_year = "20"+p_year;break;
	case 3: p_year = "2"+p_year;break;
	}
	this.gYear = p_year;
	this.gFormat = p_format;
	this.gBGColor = "white";
	this.gReturnItem = p_item;
}

Calendar.get_month = Calendar_get_month;
Calendar.get_daysofmonth = Calendar_get_daysofmonth;
Calendar.calc_month_year = Calendar_calc_month_year;

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;
}

Calendar.prototype.getMonthlyCalendarCode = function() 
{
	var vCode = "";
	var vHeader_Code = "";
	var vData_Code = "";
	
	// Begin Table Drawing code here..
	vCode = vCode + "<TABLE width=200 align=center BORDER=1 cellpadding=2 cellspacing=0 bgcolor='"+this.gBGColor+"' >";
	
	vHeader_Code = this.cal_header();
	vData_Code = this.cal_data();
	vCode = vCode + vHeader_Code + vData_Code;
	
	vCode = vCode + "</tr></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("<link href='../visuel/css.css' rel='stylesheet' type='text/css'>")
	// have to redefine the body, there is a background image in the default
	this.wwrite("<style type='text/css'>\n");
	this.wwrite("body { margin-left: 0px;\nmargin-top: 0px;\nmargin-right: 0px;\nmargin-bottom: 0px;\nfont-family: Verdana, Arial, Helvetica, sans-serif; }");
	this.wwrite(".i_calendar { font-size: 11px; font-weight: bold; color: #46477A }");
	this.wwrite(".i_cday { font-size: 11px; font-weight: bold; color: #FF0000 }\n");
	this.wwrite(".i_sday { font-size: 11px; font-weight: bold; color: #00FF00 }\n");
	this.wwrite(".i_dow { font-size: 11px; font-weight: bold; color: #46477A }");
	this.wwrite(".i_select { font-size: 12px; color: #46477A;}");
	this.wwrite("</style>\n");

	this.wwrite("<script language='javascript'>");
	this.wwrite("function ch(v){");
	this.wwrite("self.opener.document.getElementById('"+this.gReturnItem+"').value=v;\n");	
	this.wwrite("self.opener.DateChanged('"+this.gReturnItem+"');"); 
	this.wwrite("window.close();}"); 
	this.wwrite("</script>");
	this.wwrite("</head>");
	this.wwrite("<body>");
	this.wwrite("<TABLE width=200 border=0 cellspacing=0 cellpadding=0 align=center>");
	this.wwrite("<tr height=8><td></td></tr>\n");
	// show drop downs with month and year
	// navigation buttons infos.
	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("<tr bgcolor=white>");
	this.wwrite("<td align=left>");
	this.wwrite("<A HREF=\"" +
		"javascript:window.opener.Build(" + 
		"'" + this.gReturnItem + "', '" + prevMM + "', '" + prevYYYY + "', '" + this.gFormat + "'" +
		");" +
		"\"><img src='../images/arrow-left.gif' border=no alt='previous month'><\/A>");
	this.wwrite("<select name='smonth' class='i_select' onchange=\"window.opener.Build("+
			"'" + this.gReturnItem + "',this.value , '" + this.gYear + "', '" + this.gFormat + "'" +	
			");\">");
	for(i=0;i<Calendar.Months.length;i++)
	{
		if(i != this.gMonth)
			this.wwrite("<option value="+i+">"+Calendar.Months[i]);
		else
			this.wwrite("<option value="+i+" selected>"+Calendar.Months[i]);
	}
	this.wwrite("</select>");
	this.wwrite("<A HREF=\"" +
		"javascript:window.opener.Build(" + 
		"'" + this.gReturnItem + "', '" + nextMM + "', '" + nextYYYY + "', '" + this.gFormat + "'" +
		");" +
		"\"><img src='../images/arrow-right.gif' border=no alt='next month'><\/A></TD>");
	this.wwrite("<td align=right>\n");
	this.wwrite("<select name='syear' class='i_select' onchange=\"window.opener.Build("+
	"'" + this.gReturnItem + "', '" + this.gMonth + "', this.value , '" + this.gFormat + "'" +	
		");\">");
	for(i=Calendar.First_Year;i<=Calendar.Last_Year;i++)
	{
		if(i != this.gYear)
			this.wwrite("<option value="+i+">"+i);
		else
			this.wwrite("<option value="+i+" selected>"+i);
	}
	this.wwrite("</select></td>");
	this.wwrite("</tr>\n");
	this.wwrite("<tr height=5><td></td></tr>\n");
	
	this.wwrite("</TR></TABLE>");
	/**/
	// Get the complete calendar code for the month..
	vCode = this.getMonthlyCalendarCode();
	this.wwrite(vCode);

	this.wwrite("</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>";
	for(i=0;i<7;i++)
		vCode = vCode + "<TD class='i_dow'>" + Calendar.Days[i] + "</TD>\n";
	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>\n";
	for (i=0; i<vFirstDay; i++) 
	{
		vCode = vCode + "<TD align=center" + this.write_weekend_string(i) + ">&nbsp;</TD>\n";
	}

	// Write rest of the 1st week
	for (j=vFirstDay; j<7; j++) 
	{
		vCode = vCode + "<TD align=center" + this.write_weekend_string(j) + ">" + 
			"<A class='i_calendar' HREF='#' " + 
				"onClick=\"ch('"+this.format_data(vDay) + 
				"');\">" + 
				this.format_day(vDay) + 
			"</A>" + 
			"</TD>\n";
		vDay=vDay + 1;
	}
	vCode = vCode + "</TR>";

	// Write the rest of the weeks
	for (k=2; k<7; k++) 
	{
		vCode = vCode + "<TR class='i_calendar'>\n";

		for (j=0; j<7; j++) 
		{
			vCode = vCode + "<TD align=center" + this.write_weekend_string(j) + ">" + 
				"<A class='i_calendar' HREF='#' " + 
					"onClick=\"ch('" + 
					this.format_data(vDay) + 
					"');\">" + 
				this.format_day(vDay) + 
				"</A>" + 
				"</TD>\n";
			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) + 
			">&nbsp;</TD>\n";
		else
			vCode = vCode + "<TD align=center" + this.write_weekend_string(j+m) + 
			">" + m + "</TD>\n";
	}
	
	return vCode;
}

Calendar.prototype.format_day = function(vday) 
{
	if (vday == vNowDay && this.gMonth == vNowMonth && this.gYear == vNowYear)
		return ("<span class='i_cday'>" + vday + "</span>");
	else if (vday == p_day && this.gMonth == p_month && this.gYear == p_year)
		return ("<span class='i_sday'>" + vday + "</span>");
	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).toUpperCase();
	var vFMon = Calendar.get_month(this.gMonth).toUpperCase();
	var vY4 = new String(this.gYear);
	/*
	switch(vY4.length)
	{
	case 1:	vY4 = "200"+vY4;break;
	case 2:	vY4 = "20"+vY4;break;
	case 3:	vY4 = "2"+vY4;break;
	}
	*/
	var vY2 = new String(vY4.substr(2,2));
	//alert("vY4="+vY4+"vY2="+vY2);
	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) 
{
	//alert(p_year);
	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.show();
}


function show_calendar() 
{
	/* 
		current : current date (DD/MM/YYYY)
		p_format: Date format (mm/dd/yyyy, dd/mm/yy, ...)
		p_item	: Return Item.
	*/
	p_item = arguments[0];
	d = document.getElementById(p_item).value;
	if (d == null || d == "" || d == "0" || d == "00-00-0000")
	{
		yy = gNow.getFullYear();
		if(yy < Calendar.First_Year)
		{
			p_year = new String("" + Calendar.First_Year);
			p_month = new String("0");
		}
		else
		{
			p_month = new String(gNow.getMonth());
			p_year = new String(yy.toString());
		}
	}
	else 
	{
		mm = d.substring(0,2);
		if(mm.indexOf("0") == 0)
			mm = mm.substring(1);
		p_day = parseInt(mm);
		mm = d.substring(3,5);
		if(mm.indexOf("0") == 0)
			mm = mm.substring(1);
		p_month = parseInt(mm)-1;
		p_year = d.substring(6);
	}
	//alert("year="+p_year);
	p_format = (arguments[2] == null)? "DD-MM-YYYY":arguments[2];

	vWinCal = window.open("", "Calendar", 
		"width=220,height=182,status=no,resizable=no,scrollbars=no,top=200,left=200");
	vWinCal.opener = self;
	ggWinCal = vWinCal;

	Build(p_item, p_month, p_year, p_format);
	vWinCal.focus();
}

// useful functions
function y2k(year){ return (year < 2000)? 1900+year:year;}

// get date from DD-MM-YYYY format
function toDate(s)
{
    mm = s.substring(0,2);
    if(mm.indexOf("0") == 0)
            mm = mm.substring(1);
    day = parseInt(mm);
    mm = s.substring(3,5);
    if(mm.indexOf("0") == 0)
            mm = mm.substring(1);
    month = parseInt(mm)-1;
    year = parseInt(s.substring(6));
    return new Date(year,month,day);
}