asp:UpdateProgress and dirtypage is not working

[nixan286]

I have asp:UpdateProgress on my webform and trying to use dirtyforms jquery which is not working. any help would be greatly appreciated

    $(document).ready(function () {
        $('form').dirtyForms();
    });

<asp:UpdateProgress ID="UpdateProgress1" runat="server" AssociatedUpdatePanelID="Main">

</asp:UpdateProgress>

<asp:UpdatePanel ID="Main" runat="server">

<asp:AsyncPostBackTrigger ControlID="btnBack" EventName="Click" />

<
controls defined here

</asp:UpdatePanel>