onUnload / onLoad question with code

programming flash
1

Why doesn’t this work?


staticGraphic_mc._visible = false;
contents_mc.loadMovie("main.swf");
main_btn.onRelease = function() {
	contents_mc.play();
	contents_mc.onEnterFrame = function() {
		if (contents_mc._currentframe == contents_mc._totalframes) {
			contents_mc.unloadMovie();
			contents_mc.onUnload = function() {
				trace("asdf");
				staticGraphic_mc._visible = true;
				this.loadMovie("main.swf");
			};
		}
		contents_mc.onLoad = function() {
			trace("fdsa");
			staticGraphic_mc._visible = false;
		};
	};
};

Where it traces “asdf” it works fine but where it doesn’t trace “fdsa”. I don’t know whats wron’g