How to halt asp UpdateProgress on error?

[Ibredd]

I have an update progress with a spinner in it. On click of a search button, the spinner shows, and when it gets it's response the spinner goes away. This is all automated by the listview and asp update progress controls.However, I have found that if an error occurs on the server side during this async postback, or the postback takes too longer, than the spinner will just keep spinning indefinitely.Is there a way to recognize if an error has happened or if a request has timed out and then unload the updateprogress? I was on the trail of maybe recognizing an error through the scriptmanager, but got lost.