così carichi in automatico e scarichi con un pulsante.
codice:
var loader:Loader = new Loader();
 loader.load(new URLRequest("nome.swf"))
 loader.contentLoaderInfo.addEventListener(Event.COMPLETE, onLoaded, false, 0, true)
function onLoaded(evt:Event):void{
    addChild(loader)
    evt.target.removeEventListener(Event.COMPLETE, onLoaded)
    }
    
pippo.addEventListener(MouseEvent.CLICK, onClick);

function onClick(event:MouseEvent):void {    
   
removeChild(loader)
    }