function callback() {
            document.getElementById("container").innerHTML = "正在读取数据...";
            $$.ajax({                           //$$为自定义命名空间
                calltype: "post",
                url: "/test.aspx",
                sendData: "yangfan=ddd&yangfan=aaa",
                callback: function (data) {
                    document.getElementById("container").innerHTML = data;         //data为服务端响应的内容。这难道是读缓存?
                }
            });
            return false;
        }