Movie clip as button

[freedomn]

I want to do a movie clip as a button. And when you roll over the mc, there`s an effect. But when i do this animation reverse(from the end to the start) in frame "bitek1out", and I leave the button, it doesn`t work (actually nothing happens-it returns to look as when you don`t roll over). Where`s the error?

import  flash.display.MovieClip; 
import  flash.events.MouseEvent; 

bitek1.addEventListener(MouseEvent.ROLL_OVER, onRollOverHandler);
bitek1.addEventListener(MouseEvent.ROLL_OUT, onRollOutHandler);
bitek1.addEventListener(MouseEvent.CLICK, onClickHandler);
bitek1.addEventListener(MouseEvent.MOUSE_DOWN, onPressHandler);
bitek1.addEventListener(MouseEvent.MOUSE_UP, onReleaseHandler);
bitek1.buttonMode = true;
bitek1.useHandCursor = true;

function onRollOverHandler(myEvent:MouseEvent){
bitek1.gotoAndPlay("bitek1over");
}

function onRollOutHandler(myEvent:MouseEvent){
bitek1.gotoAndPlay("bitek1out");
}
function onClickHandler(myEvent:MouseEvent){
bitek1.gotoAndPlay("bitek1click");
}
function onPressHandler(myEvent:MouseEvent)
{ 
bitek1.gotoAndPlay("bitek1mousedown");
} 
function onReleaseHandler(myEvent:MouseEvent)
{ 
bitek1.gotoAndPlay("bitek1mouseup");
}