Modal Popup with asynchronous postback

Does anyone know how to call an modal popup and get it to "show" when an asynchronous postback begins and "hide" when the asynchronous postback is complete. I am basically tring to do what I see on codeplex when you login or do a search. I have tried this a few differnet ways following articles on web perform a similar (but not exact) situation, but I can't seem to get it to work.

Hi Audley9,

To make a ModalPopupExtender shown when sending a asynchronous postback and make it hidden when the asynchronous postback finished, please add these code to your page.

 <script type="text/javascript" language="javascript">Sys.WebForms.PageRequestManager.getInstance().add_beginRequest(BeginRequestHandler); Sys.WebForms.PageRequestManager.getInstance().add_endRequest(EndRequestHandler); function BeginRequestHandler(sender, args){ $find("ModalPopupExtender.BehaviorID").show(); } function EndRequestHandler(sender, args){ $find("ModalPopupExtender.BehaviorID").hide(); } </script>

I hope this help.

Best regards,

Jonathan