Zoom out until the original size of the document

use an if-statement to check if scaling is too small

import flash.events.MouseEvent; stage.addEventListener(MouseEvent.MOUSE_WHEEL, Zoom); function Zoom(e:MouseEvent):void {        var mod:Number = 20;   kep2.scaleX += e.delta / mod;     kep2.scaleY += e.delta / mod; if(kep2.scaleX<1){ kep2.scaleX=kep2.scaleY=1; }     kep2.x = ((2 * mouseX) - (2 * (e.localX * kep2.scaleX))) / 2;   kep2.y = ((2 * mouseY) - (2 * (e.localY * kep2.scaleY))) / 2; } import flash.events.MouseEvent; this.addEventListener(MouseEvent.MOUSE_DOWN, startDragging, true); this.addEventListener(MouseEvent.MOUSE_UP, stopDragging, true); function startDragging(e:MouseEvent) { kep2.startDrag(); } function stopDragging(e:MouseEvent) { kep2.stopDrag(); }