private var mc1:MovieClip1;

private var mc2:MovieClip2;

private var button:MyButton; 

 

public function Main() {

 

mc1 = new MovieClip1();

mc2 = new MovieClip2();

button = new MyButton();

 

mc2.gotoAndStop(1);

 

addChild(mc1);

addChild(mc2);

mc1.addChild(button);

button.addEventListener(MouseEvent.CLICK, onClick);

}

 

private function onClick(e:MouseEvent):void{

mc2.gotoAndStop(2);

}