package { import flash.display.*; import flash.events.*; import flash.net.*; import flash.system.*; public class Main extends Sprite { public function Main() { var loader:Loader = new Loader(); loader.contentLoaderInfo.addEventListener(Event.COMPLETE, onLoaderComplete); var ctx:LoaderContext = new LoaderContext(false, ApplicationDomain.currentDomain); loader.load(new URLRequest('library.swf'), ctx); } private function onLoaderComplete(event:Event):void { addChild(new MyPNG()); } } }