Hierarchy of targeting..?

I have my main swf file which is the layout of the site in which I have loaded into a container an external swf which is my contact.swf. The problem is that when this file is loaded you cannot see any of the input boxes etc and the php file is not processed I’ve tried various targetting etc but still no result.

AS on the first frame

true_btn.onRelease = function(){
// send variables in form movieclip (the textfields)
// to email PHP page which will send the mail
form.loadVariables(“email.php”, “POST”);
}
stop();

AS on the second frame

back.onRelease = function(){
prevFrame();
}

And the AS on the form movieclip

onClipEvent(data){
// show welcome screen
_parent.nextFrame();
}

Thank you for everyone’s time.