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);}