[derhab]

вариант для 10-ки

function isContentLoaded(event : Event):void
{
        var tempClip: MovieClip = imageLoader.content as MovieClip;
        tempClip.stop();
	tempClip.addEventListener(Event.EXIT_FRAME, checkChildrenInFrame);
 
}
 
function checkChildrenInFrame(e:Event):void
{
         var tempClip:MovieClip = e.target as MovieClip;
 
         trace('------ current frame = ' + tempClip.currentFrame + ' ------');
         var l:int = tempClip.numChildren;
	 for(var i:int = 0; i < l; i++){
	    trace(tempClip.getChildAt(i));
	 }
 
	if(tempClip.currentFrame == tempClip.totalFrames)
	tempClip.removeEventListener(Event.EXIT_FRAME, checkChildren);
	else
	tempClip.nextFrame();
 
}