Professional :: Showing A Progress Bar Or Percentage Value Before Loading The Main Swf?

Is there a surestarter preloader in AS3 with CS4? Meaning here, showing a progress bar or percentage value before loading the main swf, right away at the start of the  loading.I tried 3 different versions:
 
1- I used the code from a video (and accompanying files), and simply changed the content.swf to my own swf file (rename my swf content.swf), so that the original code would load my swf instead of the original content.swf. (original content.swf was too small to see anything before loading, because my loading speed is too fast).Here is the code from the original preloader (loads a small swf which then loads the main swf file):
 
var l:Loader = new Loader();l.contentLoaderInfo.addEventListener(ProgressEvent.PROGRESS, loop);l.contentLoaderInfo.addEventListener(Event.COMPLETE, done);l.load(new URLRequest("content.swf"));
function loop(e:ProgressEvent):void{ var perc:Number = e.bytesLoaded / e.bytesTotal; percent.text = Math.ceil(perc*100).toString();}[code].....