//获取通过地址传递的参数
    function GetRequest() {
      var url = location.search; //获取url中"?"符后的字串
       var theRequest = new Object();
       if (url.indexOf("?") != -1) {
          var str = url.substr(1);
          strs = str.split("&");
          for(var i = 0; i < strs.length; i ++) {
             theRequest[strs[i].split("=")[0]]=(strs[i].split("=")[1]);
          }
       }
       return theRequest;//参数对象
    }