<asp:UpdatePanel ID="updgvProd" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<asp:UpdateProgress ID="UpdateProgress3" runat="server" AssociatedUpdatePanelID="updgvProd">
<ProgressTemplate>
<div id="Background">
</div>
<div id="Progress">
<img src="../Image/loading.gif" alt="progress" style="vertical-align: middle" />
</div>
</ProgressTemplate>
</asp:UpdateProgress>
</ContentTemplate>
</asp:UpdatePanel>