AS3 – One slider for any Child MovieClip

programming flash
1

I have a parent (container) movie clip on my main stage into which I load different child movie clips. Have been trying to figure out for a while now and checked different forums, how to get a slider (also placed on the main stage) to work for any movieclip loaded into the container. So far I have only managed to assign the slider to one movie clip at a time by specifying the values etc of that particular movie clip. However, I have hundreds of different movie clips that are loaded in to the container (one is visible at any time) depending on other selections made in my interface. Could anyone help me (or point me to a tutorial) to make the slider more universal so that it can be used for any movie clip loaded into the container?

Here is the code I used for the slider to work with movie clip cross_f1:

sl.width = 500; 
sl.move(150, 450);
trace(cross_f1.totalFrames);
sl.maximum = cross_f1.totalFrames;
sl.liveDragging = true;
sl.minimum = 1;
sl.liveDragging = true;
sl.addEventListener(Event.CHANGE, moveAlong);
sl.addEventListener(Event.CHANGE,mcHandler);

function mcHandler(e:Event){
	trace("aSlider.value: "+sl.value);
	cross_f1.gotoAndStop(sl.value);
	cross_f1.gotoAndStop(sl.value);
}
function moveAlong(evt:Event):void {
	cross_f1.gotoAndStop(sl.value);
	cross_f1.gotoAndStop(sl.value);
}
addEventListener('enterFrame',enterFrame); 
function enterFrame(evt){ 
sl.value = cross_f1.currentFrame; 
}