Atlas has a control called UpdateProgress. Whatever you place inside that tag will show up while the page is being refreshed. I place an animated progress bar that shows up any time Atlas is refreshing the page. Is this what you are talking about?
<atlas:UpdateProgress runat="server" ID="atlProgress" EnableViewState="false">
<ProgressTemplate>
<asp:Image ID="imgProgress" runat="server" ImageUrl="~/images/status_anim.gif" ImageAlign="Left" />
</ProgressTemplate>
</atlas:UpdateProgress>