var parseParam = function(param) {
                var paramStr = "";
                for(k in param){
                    paramStr += "&" + k + "=" + encodeURIComponent(param[k]);
                }
                return paramStr.substr(1);
            };
            U = function(url, params){
                if(params !== undefined){
                    return "/index.php" + "/" + url + "?" + parseParam(params);
                }
                return "/index.php" + "/" + url;
            }