the buttons within my submenue movie clip don't work. the one's not within a submenu work fine.
my code validates and i'm not getting any errors
any idea on what else i should be checking?

///this one doesn't work////    
aboutSub.bio.addEventListener(MouseEvent.CLICK, goBio);
function goBio(evtObj:MouseEvent) {
    gotoAndStop("bio");
}


/// this one works////    
home.addEventListener(MouseEvent.CLICK, gohome);
function gohome(evtObj:MouseEvent) {
    gotoAndStop("home");
}