Time out issue?

[skiflyer]

I have a page written in PHP. The page has frames (not my decision).

At one point, if a certain combination of events happens in the main frame, the top frame is changed, the php script is called again, it shells out and retrieves some data to populate the form fields and the main page reloads with the proper field populated, then the top frame is changed back.

Now, in IE this works just fine. In Opera and Mozilla however, the top frame changes, and that's the end of the story... the pages report as done. Any ideas what might be happening here?

Thanks,
Rob