Level based loading bar?

1

I’m seeking a method to create loading bar that will display a loading progress anytime something is being loaded into my empty MC “fileHolderMC” AND/OR level 1. Is this possible? Here is my current AS (which works well for the fileHolderMC):

 
onClipEvent (load) {
total = _root.fileHolderMC.getBytesTotal();
}
onClipEvent (enterFrame) {
loaded = _root.fileHolderMC.getBytesLoaded();
percent = int(loaded/total*100);
gotoAndStop(percent);
if (loaded >= 99) {
_root.progressBar._visible=false;
}
}