var xmlhttp;
    
    function viewCategory()
    {
        document.getElementById("divlist").innerText="正在加载论坛列表，请稍候......";
        
        xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
        
        xmlhttp.onreadystatechange=stateChange;
        
        xmlhttp.open("POST","CategoryListServer.aspx",true);
        
        xmlhttp.send(null);
    }
    
    //判断请求的状态
    function stateChange()
    {
        if(xmlhttp.readystate==4)
        {
            if(xmlhttp.status==200)
            {
                document.getElementById("divlist").innerHTML=xmlhttp.responseText;
            }
        }
    }