public function TheLoader() {

 loader = new Loader();

 loader.load(new URLRequest("ToLoad.swf"));

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

}

 

private function loaded(e:Event):void {

 e.target.removeEventListener(Event.COMPLETE, loaded);

 

 var LoadedClass:Class = loader.content.loaderInfo.applicationDomain.getDefinition("ToLoad") as Class;

 var newVar:ToLoad = new LoadedClass() as ToLoad;

 addChild(newVar);

 trace(newVar.toTrace);

}