Someone

_root.createEmptyMovieClip("mc", 1);
_root.mc.loadMovie("aqua.jpg");


this.onEnterFrame = function() {
	
	gL = _root.mc.getBytesLoaded();
	gT = _root.mc.getBytesTotal();
	
	if (gL>=gT && gL>4) {
		delete this.onEnterFrame;
		trace(_root.mc._width);
	}
	
};