收藏 不显示删除回复显示所有回复显示星级回复显示得分回复 Session失效用Div弹出登录信息[问题点数:20分，结帖人:gxzhangyizhong]

window.setInterval("judgeSession()",50);
function judgeSession()
{
   var request = new ActiveXObject("MSXML2.XMLHTTP.3.0");
   try
   {
         var sRequest="judge.aspx";   //在这个页面里后台程序里判断是否session timeout              
         request .open("GET",sRequest,true);
         request.onreadystatechange = function()
         {
               if(request.readyState == 4)
               {
                    if(request.status == 200)
                    {
                        if(request.responseText == '1')   //返回1表示session timeout
                        {
                               /*在这弹出你的那个div窗口*/
                         }
                    }
               }
          }         

         request.send(null);
   }
   catch(e)
   {}
}