ActionScript 3.0 :: Dynamically Creating MovieClip From Library With External Class

I am making a Thumbnail class which is part of my Photo Gallery Package that I am building with the intent of automatically generating my thumbnails. I do not want to limit myself to just AS3 animations, I would also like the ability to use timeline animations. I have a system using "in" and "out" for frame labels which I find very efficient and I get stuff done quickly. So I created the thumbnails holder MovieClip with the animations and have it linked in my Library, however, when I try to pass it to my Thumbnail Class, I only get one instance and I need to create several instances.

Document Class
ActionScript Code:
var thumbCont:mcThumb = new mcThumb();
thumbNails = new Thumbnails(thumbCont);

Thumbnails Class
ActionScript Code:
var thumbContainer:MovieClip;
public function Thumbnails(thumbCont:MovieClip,) {
thumbContainer = thumbCont;
}private function createThumbs():void {
for (var i:int = 0; i < aThumbs.length; i++) {
[Code] .....

I eliminated most of the additional stuff. What this does is that it doesn't create several thumbContainers, rather it just uses the one. So how would I be able to generate several of them? I can obviously create an Array with them and create them in my document class, but if I can avoid that and have my thumbnail class do it by itself, that would be perfect.