readding a callback?

[ef_arf]

Hope my questions are not lame..

My application via Ext JS calls __flash__removeCallback (automatically when switching tabs). Is there a way to readd the call back functions? (I tried removing the attribute that was set to null). I do not want to override __flash__removeCallback.

Is there a way to get a list of all the callback function that are available to an object?

Thanks!