Btns within roll over mc

I have a simple roll on roll off movie clip using this code

stop(); // stop the movie clip from playing (stop button from growing, we want that when the mouse rolls over only
                                             
this.onEnterFrame = function(){
    if(rewind == true){   //if rewind switch is set to true play backwards
        prevFrame();        // play backwards
    }
}

this.onRollOver = function(){
    rewind = false; //set variable (or switch) that decides wether ot not to play backwards...
    play();    // play this movie clip.. (grow the button(tween));
}

this.onRollOut = function(){
    rewind = true;    //set or rewind switch to true so it will play backwards...
}

the problem is, any btns that i place inside it dont work. DOes anyone have a good work around for this, or a better piece of code for the roll over action…

Many thanks

Greg