function isNum(arg)
{
	var args = arg;

	if (args == "" || args == null || args.length == 0)
	{
		return false;
	}

	args = args.toString();

	for (var i = 0;  i<args.length;  i++)
	{
		if ((args.substring(i,i+1) < "0" || args.substring(i, i+1) > "9") && args.substring(i, i+1) != ".")
		{
		return false;
		}
	}
	return true;
}

function DaysInMonth(Y, M) {
    with (new Date(Y, M, 1, 12)) {
        setDate(0);
        return getDate();
    }
}

function calage()
{
	var curday = document.cir.len11.value;
	var curmon = document.cir.len12.value;
	var curyear = document.cir.len13.value;

	if(curday == "" || curmon=="" || curyear=="")
	{
		alert("please fill all the values and click go -");
	}	
	else
	{
		var curd = new Date(curyear,curmon-1,curday);
		
		var res = curd.getDay();
		var res2 = curd.getMonth();
		
		if(res2 == (curmon-1))
		{
			document.cir.val.value= "Valid";	
			
			if(res == 1)
			document.cir.val1.value= "MONDAY";
			if(res == 2)
			document.cir.val1.value= "TUESDAY";
			if(res == 3)
			document.cir.val1.value= "WEDNESDAY";
			if(res == 4)
			document.cir.val1.value= "THURSDAY";
			if(res == 5)
			document.cir.val1.value= "FRIDAY";
			if(res == 6)
			document.cir.val1.value= "SATURDAY";
			if(res == 0)
			document.cir.val1.value= "SUNDAY";	
		}
		else
		{
			//curmon = curmon-1;
			var dm = DaysInMonth(curyear,curmon);
			document.cir.val.value= curmon+"/"+curyear+" has "+dm+" days only";	
			document.cir.val1.value= "Invalid Date";	
		}
	}
}

function color(test)
{

	for(var j=2; j<4; j++)
	{
		var myI=document.getElementsByTagName("input").item(j);
		//myI.setAttribute("style",ch);
		myI.style.backgroundColor=test;
	}
}


function color1(test)
{
var myI=document.getElementsByTagName("table").item(0);
//myI.setAttribute("style",ch);
myI.style.backgroundColor=test;
}