Problem with updateprogress control

Hi All,

I have the following code on my web page:

<%@ Page Title="" Language="vb" AutoEventWireup="false" MasterPageFile="~/M.Master"
    CodeBehind="UploadPDFFile.aspx.vb" Inherits="SMS.UPDSMS.WEB.UploadPDFFile" %><%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="asp" %><asp:Content ID="Content1" ContentPlaceHolderID="cphMain" runat="server"><asp:ScriptManager ID="ScriptManager1" runat="server" EnablePageMethods="true"></asp:ScriptManager><div>
        Please select a .pdf file to upload</div><div>&nbsp;</div><div><asp:FileUpload ID="FileUpload1" name="FileParsed" runat="server" /></div><div>&nbsp;</div><div><asp:UpdatePanel runat="server" ID="Panel1" UpdateMode="Conditional"><ContentTemplate><div><asp:UpdateProgress ID="UpdateProgress1" runat="server" AssociatedUpdatePanelID="Panel1"><ProgressTemplate><div id="dvProgress" runat="server" style="position: absolute; top: 300px; left: 550px;
                                text-align: center;"><asp:Image ID="Image2" runat="server" Height="46px" Width="47px" ImageUrl="../../Images/Progress.gif" /></div>
                            Please wait to retrieve data...</ProgressTemplate></asp:UpdateProgress><asp:Button ID="btnUpload" Text="Upload" runat="server" Style="height: 26px" />&nbsp;<asp:Button ID="btnViewData" Text="View Parsed Data" runat="server" />&nbsp;<asp:Button ID="btnDeletedata" Text="Delete Existing Uploaded Files" runat="server" />&nbsp;</div></ContentTemplate></asp:UpdatePanel></div><div>&nbsp;</div><div>
        Please select a Listing .xls file to upload</div><div>&nbsp;</div><div><asp:FileUpload ID="FileUpload2" name="FileParsed" runat="server" /></div><div>&nbsp;</div><div><asp:UpdatePanel runat="server" ID="Panel2"><ContentTemplate><asp:UpdateProgress ID="UpdateProgress2" runat="server" AssociatedUpdatePanelID="Panel2"><ProgressTemplate><img src="../../Images/Progress.gif" alt="Animated gif file" />Please wait...</ProgressTemplate></asp:UpdateProgress></div><div>&nbsp;</div><div><asp:Button ID="BtnExcelFile" Text="Upload" runat="server" Style="height: 26px" />&nbsp;<asp:Button ID="BtnListing" runat="server" Text="View Section Listing Data"
                    Style="height: 26px" /></div></ContentTemplate></asp:UpdatePanel></asp:Content>

I want to see the updateProgress control when I click on the btnUpload or btnViewData or btnDeletedData or any other button present on the web page but I don't see a updateProgress control at all.

any help will be appreciated.