使用ajax做右下角弹出提示

Ajax.Utility.RegisterTypeForAjax(GetType(index)) 

<Ajax.AjaxMethod()> Public Function GetdealMessageShow(ByVal v As String) As String 
Dim userid As Integer 
Try 
userid = CType(v, Integer) REM v为个人ID信息 
Catch ex As Exception 
Exit Function 
End Try 
Dim value As String = datacls.Email_TopDealinfo(userid) REM 数据处理放在datacls中 
Return value 
End Function 

function CheckIsNewSystemInfo() 
{ 
var v=document.getElementById('Hiddenuserid').innerHTML ; 
index.GetdealMessageShow(v,GetdealMessageShow_callback); 
//index与后台的RegisterTypeForAjax类型一致. 
} 
function GetdealMessageShow_callback(res) 
{ 
var s=res.value; 
if(s!='' && s!=null) 
{ 
var strTmp=s.split("|"); 
document.getElementById('PopupWin1titleEl').innerHTML ='::::::系统提示::::::'; document.getElementById('PopupWin1aCnt').innerHTML='<span id=popupwin1_emailid>'+strTmp[0]+'</span>'+strTmp[1]; 
//strTmp[0]为ID,主要是用于关闭提示窗时去掉已提醒的信息,strTmp[1]为内容 
PopupWin1espopup_winLoad(); 
} 
} 

window.setInterval("CheckIsNewSystemInfo()",5000);