Javascript Source: Format number to currency format
Javascript function used to format number in currency format, for example: format 1000.25 as $1,000.25
function formatCurrency(num)
{
num = num.toString().replace(/\$|\,/g,'');
if(isNaN(num)) num = "0";
sign = (num == (num = Math.abs(num)));
num = Math.floor(num*100+0.50000000001);
cents = num%100;
num = Math.floor(num/100).toString();
if(cents<10)
cents = "0" + cents;
for (var i = 0; i < Math.floor((num.length-(1+i))/3); i++)
num = num.substring(0,num.length-(4*i+3))+','+
num.substring(num.length-(4*i+3));
return (((sign)?'':'-') + '$' + num + '.' + cents);
}