Load multiple external images

Question

If you load say 3 external images in AS3 and want to run a function "useImages()" only once all three images have loaded what is the best way of listening for them to complete loading.
EG;
loader1.addEventListener(Eveent.COMPLETE, incLoader)
loader2.addEventListener(Eveent.COMPLETE, incLoader)
loader2.addEventListener(Eveent.COMPLETE, incLoader)
function incLoader(event:Event)
     numLoaded ++
     if (numLoaded == 3)
               useImages()
There must be a better way than the above.
Any feedback would be much appreciated
Thanks

Answer 1

Here's a set of functions I used to load pages into a flip page magazine app.  They keep track of how many pages are supposed to load and how many actually load.  I also used an XML file that the web people can update so that it loads different images.  You can add the loader objects in the loaders Array into any DisplayObjectContainer:
var pageCount:int = 3;
var pagesLoaded:int = 0;
var loaders:Array = new Array;
public function loadPage(aPage:String):void
  var pictLdr:Loader = new Loader();
  var pictURLReq:URLRequest = new URLRequest(aPage);
  pictLdr.load(pictURLReq);
  pictLdr.contentLoaderInfo.addEventListener(Event.COMPLETE, imgLoaded);
  pictLdr.addEventListener(IOErrorEvent.IO_ERROR, pictErrorHandler);
  loaders.push(pictLdr);
  updateLoadText();
private function imgLoaded(event:Event):void
  pagesLoaded++;
  addPagesToFlipBook();
private function pictErrorHandler(event:IOErrorEvent):void
  var ldrInfo:LoaderInfo = LoaderInfo(event.target);
  loaders.splice(loaders.indexOf(ldrInfo.loader), 1);
  pageCount--;
  addPagesToFlipBook();
private function updateLoadText():void
  errorText.text = "Loading image " + (pagesLoaded + 1) + " of " + pageCount + "..."
private function addPagesToFlipBook():void
  updateLoadText();
  if (pagesLoaded == pageCount)
    ... do more stuff
*edit* How do I create a code window for code?