AS3 full screen mode

Heres a function to toggle full screen mode using AS3. Note that in fullscreen mode that only the "non-printing" keys work (arrows, shift, etc).

function toggleFullScreenMode(e:MouseEvent):void {
 if (viewingFullScreen==false) {
  viewingFullScreen=true;
  navsNorthMultiPage_mc.tween_mc.eastButtons_mc.fullScreenAnim_mc.gotoAndPlay("full");
  navsSouthMultiPage_mc.tween_mc.eastButtons_mc.fullScreenAnim_mc.gotoAndPlay("full");
  stage.displayState="fullScreen";
 } else {
  viewingFullScreen=false;
  navsNorthMultiPage_mc.tween_mc.eastButtons_mc.fullScreenAnim_mc.gotoAndPlay("out");
  navsSouthMultiPage_mc.tween_mc.eastButtons_mc.fullScreenAnim_mc.gotoAndPlay("out");
  stage.displayState="normal";
 }
}