Zoom in Effect

here's one way to do it:

you might want to try using EnterFrame first and only use timer if the scaleing isn't smooth enough.

the output of the code is here:  http://www.cybermountainwebservices.com/client0/dragdrop/ look for the arrows under scale XY

function scaleUp(event:MouseEvent):void {
    timer.addEventListener(TimerEvent.TIMER, timerListener);
    timer.start();
}

function timerListener(e:TimerEvent):void {
    if (lastTarget) {
        lastTarget.width*=1.01;
        lastTarget.height*=1.01;
        e.updateAfterEvent();
        if (lastTarget.width>320) {
            scaleOff();
        }
    }
}

function stopScale(event:MouseEvent):void {
    scaleOff();
}

function scaleOff() {
    timer.stop();
    timer.removeEventListener(TimerEvent.TIMER, timerListener);
    timer.removeEventListener(TimerEvent.TIMER, timerListenerDown);
}

function scaleDown(event:MouseEvent):void {
    scaleOff();
    timer.addEventListener(TimerEvent.TIMER, timerListenerDown);
    timer.start();
}

function timerListenerDown(e:TimerEvent):void {
    if (lastTarget) {
        lastTarget.scaleX*=.99;
        lastTarget.scaleY*=.99;
        e.updateAfterEvent();
        // if I reduce to 2.01 it won't scale back up
        if (lastTarget.width<3.01) {
            scaleOff();
        }
    }