How to catch an event that pressed the "DONE" button in a web clip under iOS 4.3?

Apple has changed the player behavior in WebView in iOS 4.3. When I touch the "DONE" button during playback, it simply scales and stays on the page. Previosly under iOS = 4.2 the player closed with his window.

I would like to catch this event and close the controller or view using the player. Is it possible?