var month = new Array("","Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec");
var startyear = "1950"; // Change the Starting year in your dropdown
var endyear = "2008";  // Change th ending year in the dropdown

function getDayscount(index,year)
{
	var dayCount=30;
	if(index==1 || index==3 || index==5 ||index==7 ||index==8 || index==10 || index==12)
		dayCount=31;
	if(index==2 )
		if(year%4==0 && year!=2000)
			dayCount=29;
		else
			dayCount=28;
	return dayCount;
}

function getInt(x)
{
	if((x.substring(0,1))!='0')
	return x;
	return parseInt(x.substring(1))
}

function getDayscount1(index,year)
{
	var dayCount=30;
	if(index=='01' || index=='03' || index=='05' ||index=='07' ||index=='08' || index=='10' || index=='12')
		dayCount=31;
	if(index=='02' )
		if(year%4==0 && year!=2000)
			dayCount=29;
		else
			dayCount=28;
	return dayCount;
}


function changeDays()
{
	//debugger;
	var combo=document.getElementById("month");
	var index=combo.selectedIndex+1;
	var day=document.getElementById("day").selectedIndex+1;
	var year=document.getElementById("year").options[document.getElementById("year").selectedIndex].value;
	var dayCount = getDayscount(index,year);
	drowDays(dayCount,day);	
	
}

function initDays(index,year,day)
{
	index++;
	var dayCount = getDayscount(index,year);
	drowDays(dayCount,day);	
}

function changeYearDays()
{
	var combo=document.getElementById("month");
	var index=combo.selectedIndex+1;
	if(index!=2 )
		return;
	changeDays();
}

function drowDays(dayCount,day)
{
	var daysContainer=document.getElementById("day");
	var str="";
	for(var j=1;j<=dayCount;j++)
		if(j<10)
		{
			str+="<option value=0"+j;
			if(j==day)
				str+=" selected ";
			str+=">"+j+"</option>";
		}
			else
			{
				str+="<option value="+j;
				if(j==day)
					str+=" selected ";
				str+=">"+j+"</option>";
			}
	daysContainer.innerHTML=str;
}