example1-3.as

function click(frame:Number) {
    return function(e:MouseEvent) {
        if(e.target.currentFrame == 1) {
            e.target.gotoAndStop(frame);
        } else {
            e.target.gotoAndStop(1);
        }
    }
}
button1.addEventListener(MouseEvent.CLICK,click(2));
button2.addEventListener(MouseEvent.CLICK,click(2));
button3.addEventListener(MouseEvent.CLICK,click(3));