var months = new Array("January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December");
var daysInMonth = new Array(31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);
var days = new Array("S", "M", "T", "W", "T", "F", "S");

today = new getToday();
var element_id;

function getDays(month, year)
{
	// Test for leap year when February is selected.
	if (1 == month)
		return ((0 == year % 4) && (0 != (year % 100))) ||
			(0 == year % 400) ? 29 : 28;
	else
		return daysInMonth[month];
}

function getToday()
{
	// Generate today's date.
	this.now = new Date();
	this.year = this.now.getFullYear() ; // Returned year XXXX
	this.month = this.now.getMonth();
	this.day = this.now.getDate();
}


function newCalendar()
{
	var parseYear = parseInt(document.all.year  [document.all.year.selectedIndex].text);

	var newCal = new Date(parseYear , document.all.month.selectedIndex, 1);
	var day = -1;
	var startDay = newCal.getDay();
	var daily = 0;

	today = new getToday(); // 1st call
	if ((today.year == newCal.getFullYear() ) &&   (today.month == newCal.getMonth()))
	   day = today.day;
	// Cache the calendar table's tBody section, dayList.
	var tableCal = document.all.calendar.tBodies.dayList;

	var intDaysInMonth = getDays(newCal.getMonth(), newCal.getFullYear() );

	for (var intWeek = 0; intWeek < tableCal.rows.length;  intWeek++)
		for (var intDay = 0;  intDay < tableCal.rows[intWeek].cells.length;  intDay++)
	 	{
		  	var cell = tableCal.rows[intWeek].cells[intDay];
		  	cell.style.cursor='hand';

		  	// Start counting days.
		  	if ((intDay == startDay) && (0 == daily))
				daily = 1;

		  	// Highlight the current day.
		  	cell.style.color = (day == daily) ? "red" : "";
		  
		  	if(day == daily)
		  	{
				document.all.todayday.innerText= "Today: " +  day + "/" + (newCal.getMonth()+1) + "/" + newCal.getFullYear() ;
		  	}
		  
		  	// Output the day number into the cell.
		  	if ((daily > 0) && (daily <= intDaysInMonth))
			 	cell.innerText = daily++;
		  	else
			 	cell.innerText = "";
	   }

}

	 function getTodayDay()
	 {
			    document.all[element_id].value = today.day + "/" + (today.month+1) +
					"/" + today.year;
		        //document.all.calendar.style.visibility="hidden";
				document.all.calendar.style.display="none";
				document.all.year.selectedIndex =100;
	            document.all.month.selectedIndex = today.month;
	 }

         function getDate()
			 {
	            // This code executes when the user clicks on a day
	            // in the calendar.
	            if ("TD" == event.srcElement.tagName)
	               // Test whether day is valid.
	               if ("" != event.srcElement.innerText)
				   {
					 var mn = document.all.month.selectedIndex+1;
	    			 var Year = document.all.year [document.all.year.selectedIndex].text;
	    			 
	    			 var mydate = new Date();
	                 mydate.setFullYear(Year, mn-1, event.srcElement.innerText);
	//    			
	    			////alert(mydate);
	      			var sDay = days[mydate.getDay()];
	      			
	      			if (sDay == "S")
	      			{
	      			    //alert("Your holiday cannot start or end on a weekend!");
	      			    return;
	      			}      			
	      			
	      			document.all[element_id].value=event.srcElement.innerText+"/"+mn +"/"  +Year;
					 
					 //document.all.calendar.style.visibility="hidden";
					document.all.calendar.style.display="none";
				 }
		 }

function GetBodyOffsetX(el_name, shift)
{
	var x;
	var y;
	x = 0;
	y = 0;

	var elem = document.all[el_name];
	do
	{
		x += elem.offsetLeft;
		y += elem.offsetTop;
		if (elem.tagName == "BODY")
			break;
		elem = elem.offsetParent;
	} while  (1 > 0);
    
    shift[0] = x;
	shift[1] = y;
	return  x;
}

function SetCalendarOnElement(el_name)
{
	//alert(el_name);
	if (el_name=="")
	el_name = element_id;
	var shift = new Array(2);
	GetBodyOffsetX(el_name, shift);
	document.all.calendar.style.pixelLeft  = shift[0]; //  - document.all.calendar.offsetLeft;
	document.all.calendar.style.pixelTop = shift[1] + 25 ;
}



function ShowCalendar(elem_name)
{
		//alert(elem_name);
		if (elem_name=="")
		    elem_name = element_id;

		element_id	= elem_name; // element_id is global variable
		
		//alert("1");
		newCalendar();
		//alert("2");
		document.all.calendar.style.display="inline";
		SetCalendarOnElement(element_id);
		//alert("3");
		//document.all.calendar.style.visibility = "visible";
		document.all.calendar.style.display="inline";
		//alert("4");
}

function HideCalendar()
{
	//document.all.calendar.style.visibility="hidden";
	document.all.calendar.style.display="none";
}

function toggleCalendar(elem_name)
{
	//alert(elem_name);//if (document.all.calendar.style.visibility == "hidden")
	if(document.all.calendar.style.display=="none")
		ShowCalendar(elem_name);
	else
		HideCalendar();
	//alert("jj");
}