How to unload swf file?

Question

I was wondering what are the codes for unloading the swf file after i hit the return button key????
I tried removeChild(); but still exits in the menu page after i hit the return button key.

Answer 1

no.  if you're not using a loader to load a swf, you can't use the unload() method.  and there is no unLoad() method.
if you want to remove everything from the stage in your main swf, you can use removeF() from the main timeline:
removeF(this);
function removeF(mc):void{
for(var i:int=0;i<mc.numChildren;i++){
    mc.removeChildAt(0);