function setQty(key)
{

    if (document.getElementById)
    {

        var qty = document.getElementById('qty').value;
        var keynumber = key + 'quantity';
        document.getElementById(keynumber).value = qty;

    }

}

function delQty(key)
{

    if (document.getElementById)
    {
        document.getElementById('' + key + 'quantity').value = '0';
    }

}

function getQty(form)
{

    if (document.getElementById)
    {
        var key = getCheckedValue(form.discount);
        //alert(key);
        var qty = document.getElementById('qty').value;
        document.getElementById('' + key + 'quantity').value = qty;
    }

}

function getCheckedValue(radioObj) {
	if(!radioObj)
		return "";
	var radioLength = radioObj.length;
	if(radioLength == undefined)
		if(radioObj.checked)
			return radioObj.value;
		else
			return "";
	for(var i = 0; i < radioLength; i++) {
		if(radioObj[i].checked) {
			return radioObj[i].value;
		}
	}
	return "";
}