Arrays, Classes, AHH!

I am currently working on an art project in Flash, in which an image made of small movieclips is deconstructed through mouseclicks. I have it so that when a movieclip is clicked, its y value increases until it reaches y=750.

I want to integrate another image made of small movieclips that whose alpha would increase as soon as the final movieclip from the first image reached y=750.

Then, the second image would be deconstructed the same way, and then the whole movie would loop. I’m not so experienced with actionscript and am having some trouble devising a method of execution.

Does anyone have any suggestions?

Thank you in advance!