function UpdateQty(item) 
{
itemId = item.name;
newQty = item.options[item.selectedIndex].text;
document.location.href = 'cart.php?action=update_item&id='+itemId+'&qty='+newQty;
}
 
                
function UpdateAddress(item)
{
itemId = item.name;
zone = item.options[item.selectedIndex].value;
document.location.href = 'checkout.php?zone_id='+zone;
}