var loader:Loader = new Loader();

loader.load(new URLRequest("some_image.jpg"));

loader.contentLoaderInfo.addEventListener(Event.COMPLETE, _onImageLoaded);

 

function _onImageLoaded(e:Event):void{

   var img:DisplayObject = e.target.content as DisplayObject;

   addChild(img);

   img.width *= 2;

}

var PhotoLoader:Loader = new Loader();

addChild(PhotoLoader);

PhotoLoader.load(new URLRequest("www......jpg"));

PhotoLoader.width = 50;