rollOut code doesn't work for button

[Flash_Man1]

any idea why this wont work?

here is my code:

on(rollOver){
    _root.tabmenu.butt_effects.services_button.gotoAndPlay(2);
}

on(rollOut){
    _root.tabmenu.butt_effects.serv_out.gotoAndStop("services_out");
}

cheers