onLoadComplete

var loadListener:Object = new Object();

loadListener.onLoadComplete = function(target_mc:MovieClip, httpStatus:Number):Void {
trace(">> loadListener.onLoadComplete()");
}

loadListener.onLoadInit = function(target_mc:MovieClip):Void {
trace(">> loadListener.onLoadInit()");
}

var mcLoader:MovieClipLoader = new MovieClipLoader();
mcLoader.addListener(loadListener);

var mc:MovieClip = this.createEmptyMovieClip("mc", this.getNextHighestDepth());
mcLoader.loadClip("http://www.w3.org/Icons/w3c_main.png", mc);