switching from AS3 & AS2 between .swfs

I'm trying to get my navigation to work correctly (Just going back and forth between two swfs).  The swf that i start in is using AS3.  I have a button that opens the next swf which is in AS2.  that button works fine, but i can not get the button in the AS2 file to go back to the original AS3 file. Is there something that i'm missing to make this work?

The code i have applied to the button in the AS2 file is:

on (release) {

    stopAllSounds();

    function(){

loadMovieNum ("slide hub.swf", 0);

}

}

-= Sondax =-