function GetUrlParam(paraName) {
      var url = document.location.toString();     var arrObj = url.split("?");     if (arrObj.length > 1) {
          var arrPara = arrObj[1].split("&");         var arr;         for (var i = 0; i < arrPara.length; i++) {
              arr = arrPara[i].split("=");             if (arr != null && arr[0] == paraName) {
                  return arr[1];             }         }         return "";     }     else {
          return "";     } } var paraName= GetUrlParam("paraName");