if (userid != null) {
jq.ajax({
"url" : "ShowShoppingCarServlet",
"type" : "post",
async : false,
"data" : "userid=" + userid,
"dataType" : "JSON",
"success" : function(data4) {
var car = "";
var str="";
for (var m = 0; m < data4.length; m++) {
car += "