using ajax control in share point web part.

Hi,
our team has converted asp.net 3.5 c# project to 2010 share point application.
In our share point application we are using webparts.
we have controls inside update panel.
  <script src="js/jquery-1.3.2.min.js" type="text/javascript"></script>  
    <script src="js/test.js" type="text/javascript"></script>
  <asp:UpdatePanel  runat="server" UpdateMode="Conditional"  >
  <ContentTemplate>    
   
    <asp:Button ID="Button1" runat="server"  OnClientClick="return test();"
          Text="Button" onclick="Button1_Click" />
   <asp:HiddenField runat="server" ID="hdnlbl" />
  </ContentTemp ...