var exchRate = 43.15;var exchRateUS=42.75;var rateOn='2007-nov-22';var servFee = 12;

function decimal_round(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);
}