<asp:UpdateProgress ID="TaskUpdateProgress" runat="server" DynamicLayout="False" AssociatedUpdatePanelID="upnFileUpload" DisplayAfter="0">
<ProgressTemplate>
    <div id="blur">&nbsp;</div>
    <div id="processMessage">
        <div class="center_text">
            <asp:Image ID="imgProcessing" runat="server" ImageUrl="~/App_Themes/Default/Images/Telerik/Loading.gif" AlternateText="Processing" CssClass="center_me" />
        </div>
    </div>
</ProgressTemplate>