（推荐一个超好的JS函数库）S.Sams Lifexperience ScriptClassLib

743                    break;
744                }
745                catch(e){
746                }
747            }
748         }          
749        if (objXMLHttp.readyState == null){
750            objXMLHttp.readyState = 0;
751            objXMLHttp.addEventListener("load", function (){
752                    objXMLHttp.readyState = 4;
753                    if (typeof objXMLHttp.onreadystatechange == "function"){
754                        objXMLHttp.onreadystatechange();
755                    }
756                },  false);
757        }
758        return objXMLHttp;
759    },
760
761    /// 开始发送请求
762    SendRequest : function (method, url, data, callback,funparam,funparam2){
763        var objXMLHttp = this._getInstance();
764        with(objXMLHttp){
765            try{
766                if (url.indexOf("?") > 0){
767                    url += "&randnum=" + Math.random();
768                }
769                else{
770                    url += "?randnum=" + Math.random();