Update all existent callback panels on a page.
For example, you can use the next lines:
Client-side update
ob_post.UpdateAllPanels();
Server-side update
UpdateAllPanels();
<!-- CallbackPanel1-->
<oajax:CallbackPanel runat="server" ID="callbackPanel1">
<content style="border: gray 1px solid;">
<span style="color:red">
<asp:Literal id="serverMillisecond" Runat="server"></asp:Literal>
</span>
</content>
</oajax:CallbackPanel>
<!-- CallbackPanel2-->
<oajax:CallbackPanel runat="server" ID="callbackpanel2">
<content style="border: gray 1px solid;">
<asp:Literal id="serverTime" Runat="server"></asp:Literal>
</content>
</oajax:CallbackPanel>
See also live
UpdateAllPanels Example.
For more information about CallbackPanel see
How It Works page.