[CrazyFlasher]

var alreadyRolled:Boolean = false;

mov.onMouseMove = function(){
	if(mov.hitTest(_xmouse, _ymouse)){
		if(alreadyRolled == false){
			alreadyRolled = true;
			trace("mov");
		}
	}else{
		alreadyRolled = false;
	}
}

mov.btn.onRollOver = function(){
	trace("btn");
}

на сцене: мувик "mov" и в нём кнопка "btn"