var req:URLRequest = new URLRequest("sample.swf");

var loader:Loader = new Loader();

 

function fileLoaded(event:Event):void

{

        addChild(loader);

        removeChild(loading_mc);

        removeChild(percent_txt);

}

 

function preload(event:ProgressEvent):void

{

        loading_mc.play();

        var percent:Number = Math.round(event.bytesLoaded / event.bytesTotal * 100);

        percent_txt.text = String(percent)+ "%";

}

 

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

loader.contentLoaderInfo.addEventListener(ProgressEvent.PROGRESS, preload);

loader.load(req);