function addcart(idtong,tong,divid,idpro)
{
	//document.getElementById(divid).innerHTML = "<img src = '"+base_url+"public/template/images/ajax-loader.gif'>";
	http.open("get","payment/addcart/"+idpro,true);
	http.onreadystatechange=function(){
			if(http.readyState==4 && http.status==200){
				var kq = http.responseText;
				if(kq == 0){
					document.getElementById(divid).innerHTML = "Error";
				}else{
					//alert("Sản phẩm đã được đưa vào giỏ hàng");
					//document.getElementById(divid).innerHTML = "";
					//tong = (parseInt(tong) + 1);
					//document.getElementById(idtong).innerHTML = tong;
					window.location = base_url+"payment/showcart/gio-hang.htm";
				}
			}
		};
	http.send("null");
}	

// chuyen tiep den trang xoa gio hang
function xoagiohang()
{
	window.location = "/payment/delcart/all/xoa-gio-hang.htm";
}

//chuyen tiep dan trang san pham
function tieptucmuahang()
{
	window.location = "/product/list/1/san-pham.htm";
}

//sua thong tin lien lac
function suattll()
{
	window.location = "/payment/info-customer.htm";
}

//dat hang
function dathang()
{
	window.location = "/payment/order/dat-hang.htm";
}