var startAmt = 56515923;
var Totalamount = 0;

function timedMsg()
{
	var t = setInterval("amtcount()",500);
}

function amtcount()
{
	if (Totalamount == 0)
	{
		Totalamount = startAmt + 4.31;
		//alert('first');
	} else
	{
		Totalamount = Totalamount + 4.31;
		//alert('Else');
	}
	document.getElementById('count4').value = formatCurrency(Totalamount);
}

function formatCurrency(num) {
num = num.toString().replace(/\$|\,/g,'');
if(isNaN(num))
num = "0";
sign = (num == (num = Math.abs(num)));
num = Math.floor(num*100+0.50000000001);
cents = num%100;
num = Math.floor(num/100).toString();
if(cents<10)
cents = "0" + cents;
for (var i = 0; i < Math.floor((num.length-(1+i))/3); i++)
num = num.substring(0,num.length-(4*i+3))+','+
num.substring(num.length-(4*i+3));
return (((sign)?'':'-') + num + '.' + cents);
}

timedMsg()