There is a similar question
In you're case you want to scale the object X and Y proportional. To do so you could attach two events on the object ( MovieClip I guess ) you want. The events should be
- "mouseOver"
- "mouseOut"
The script could be something like that:
var zoomAmount:Number = 0.5;
mc.addEventListener(MouseEvent.MOUSE_OVER, zoom);
mc.addEventListener(MouseEvent.MOUSE_OUT, zoomOut);
function zoom(event:MouseEvent):void {
image1.scaleX += zoomAmount;
image1.scaleY += zoomAmount;
}
function zoomOut(event:MouseEvent):void {
image1.scaleX -= zoomAmount;
image1.scaleY -= zoomAmount;
}