Flash email form - Enter Key?

Hey

I used this tutoiral - http://www.kirupa.com/developer/actionscript/flash_php_email.htm

I modified it so it just has one text box and the send button, it works fine, I get the email. (I’m using it so people can subscribe to a mailing list, so I just want their email address)

But when using the text box - pressing enter on the keyboard does nothing. This isn’t very user friendly, Any ideas?

the code on the text box looks like this:

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

and the code on the send button looks like this:
on (release) {
// send variables in form movieclip (the textfields)
// to email PHP page which will send the mail
form.loadVariables(“email.php”, “POST”);
}