Scrolling mc

Hello…

I’m trying to scroll a movie clip vertically using buttons. The movie clip (mc1) contains another movie clip (mc2) containing images and dynamic text boxes with externally loaded content… In mc1 I have added a mask layer to partially hide mc2. on the main timeline I have 2 buttons that I would to scroll mc2 inside the mask vertically… preferably for as long as the mouse is held down.

I have attached a screen grab of the site to illustrate what I mean.

Any help will be gratefully received!

ps this is not a **** site for sheep lovers!