function addcart(url, prod_id, act){
	var s = url + "&prod_id=" + prod_id + "&act=" + act + "&sel=" + document.frm.selection.value;
	window.location.href = s;
	return false;
}

function checkValidQty(evt)
{
	var charCode = (evt.which) ? evt.which : event.keyCode
	if (charCode > 31 && (charCode < 48 || charCode > 57))
		return false;
	return true;
}

function formatCurrency(amount){
	var i = parseFloat(amount);
	if(isNaN(i)) { i = 0.00; }
	var minus = '';
	if(i < 0) { minus = '-'; }
	i = Math.abs(i);
	i = parseInt((i + .005) * 100);
	i = i / 100;
	s = new String(i);
	if(s.indexOf('.') < 0) { s += '.00'; }
	if(s.indexOf('.') == (s.length - 2)) { s += '0'; }
	s = minus + s;
	return s;
}

function calTotal(bymode){
    var discount;
    var gst = 1.00;  //0% GST
	
    switch (bymode) {
        case "paypal":
            discount = 0.0;
            break;
        case "banktransfer":
            //discount = 8.0;
			discount = 0.0;
            break;
        case "cod":
            //discount = 5.0;
			discount = 0.0;
            break;
        default:
            discount = 0.0;
    }
    document.getElementById("checkout_discount").innerHTML = discount + "%";
	document.getElementById("checkout_total").innerHTML = "$ " + formatCurrency(document.getElementById("hidTotal").value * (1 - (discount/100)));
}