function shoping() {
var url = "products.php?";
	for(i=0; i<document.forms[0].elements.length; i++){
	var el = document.forms[0].elements[i].name;
		if (el.indexOf("product")!=-1){
		product = document.forms[0].elements[i].value;
		url += product;
		}
		if (el.indexOf("quantity")!=-1){
		quantity = document.forms[0].elements[i].value;
		url += "=";
		url += quantity;
		url += "&";
		}
	}
var length = url.length;
length = length - 1;
url = url.substr(0,length);
document.products.action = url;
document.products.submit();
}