Mouse enter and leave a movieclip using the Point object

Detect mouse entering and exiting a movieclip. Using this will allow rollover/out fuctionality without messing up mouse interaction of nested clips.

slideshow_mc.arrowsHotspots_mc.addEventListener(Event.ENTER_FRAME, watchForMouseEntry);
var point1:Point=new Point(0,0);
var mouseAlreadyInside:Boolean=false;
function watchForMouseEntry(e:Event):void {
 point1.x=mouseX;
 point1.y=mouseY;
 var hs:Object=e.target;
 
 if (hs.hitTestPoint(point1.x,point1.y,true)) {
  if (mouseAlreadyInside==false) {
   mouseAlreadyInside=true;
   showControls()
  }
 } else {
  if (mouseAlreadyInside==true) {
   mouseAlreadyInside=false;
   hideControls()
  }
 }
}