Blocking stage form loaded content

[COLOR=black][FONT=Arial]I would like to know it it’s possible to hide the stage form in loaded content that tries to put DisplayObjects on it or modify the frame rate. As I know the stage is always accessible when an object becomes visible I would like to prevent this.[/FONT][/COLOR]
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[COLOR=black][FONT=Arial]I have another question so I’ll just write that here too.[/FONT][/COLOR]
[COLOR=black][FONT=Arial]Is it possible to execute code before the code on a loaded swf file is executed but still get access to the content of the loader.[/FONT][/COLOR]
[COLOR=black][FONT=Arial]As I remember onLoadComplete done this in As2 but the Event.COMPLETE and Event.INIT fires after the loaded code.[/FONT][/COLOR]
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[COLOR=black][FONT=Arial]Thanks for any help.[/FONT][/COLOR]