ASP.Net AJAX UpdateProgress not working with BootStrap

I have used Twitter bootstrap on my website

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I followed your this article for progress bar. My progress bar works fine in webform(without master) but it doesnt work with content page (associted with mster page).

 Content page code

<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="Server">
   <asp:UpdatePanel ID="UpdatePanel1" runat="server">
                <ContentTemplate>
                    <div align="center">
                        <h1>Click the button to see the UpdateProgress!</h1>
                        <asp:Button ID="Button1" Text="Submit" runat="server" OnClick="Button1_Click" />
                    </div>
                    <asp:UpdateProgress ID="UpdateProgress1" runat="server" AssociatedUpdatePanelID="UpdatePanel1">
                        <ProgressTemplate>
                            <div class="modal">
                                <div class="center">
                                    <img alt="" src="Images/Loading.gif" />
                                </div>
                            </div>
                        </ProgressTemplate>
                    </asp:UpdateProgress>
                </ContentTemplate>
            </asp:UpdatePanel>
</asp:Content>

Master page code(just included jquery and format of master page)

 <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css">
    <!-- Optional theme -->
    <!-- HTML5 shim and Respond.js for IE8 support of HTML5 elements and media queries -->
    <!--[if lt IE 9]>
      <script src="https://oss.maxcdn.com/html5shiv/3.7.2/html5shiv.min.js"></script>
      <script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
    <![endif]-->
    <!-- Latest compiled and minified JavaScript -->
    <link href="Dashboard.css" rel="stylesheet" type="text/css" />
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.min.js"></script>
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>

<asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager>

                <asp:ContentPlaceHolder ID="ContentPlaceHolder1" runat="server">
                </asp:ContentPlaceHolder>