problem with AdRotator in

hi.
I have used an adrotator control for showing advertisement that stored in my db in my asp.net web site according to bellow code:
<div>  <asp:UpdatePanel id="UpdatePanel1" runat="server">
                
                                          <ContentTemplate>
  <asp:Timer ID="Timer1" runat="server" Interval="2000" ontick="Timer1_Tick" >
 </asp:Timer>
                ...