<!-- This formats the currency in the Payment Form -->
<!-- Original:  Cyanide_7 (leo7278@hotmail.com) -->
<!-- This script and many more are available free online at -->
<!-- The JavaScript Source!! http://javascript.internet.com -->

function formatCurrency(num) {
num = num.toString().replace(/\Ł|\,/g,'');
if(isNaN(num))
num = "0";
sign = (num == (num = Math.abs(num)));
num = Math.floor(num*100+0.50000000001);
pence = num%100;
num = Math.floor(num/100).toString();
if(pence<10)
pence = "0" + pence;
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 + '.' + pence);
}