Using on rollover to scroll, and keep scrolling

Hi,

Cap in hand again. I’m trying to achieve a certain effect within a site, and I was wondering if it was even possible.

I have a mask set to the stage size that moves over a movieclip significantly larger than the stage. I would like to set the control buttons so that when the mouse was over them, the clip continued to move, without clicking, and when the mouse rolled off them, or it hits the edge of the movie clip it stops scrolling.

I’d be really grateful if someone could give me an indication as to whether this is possible, and if so, a heads up as to where to start (tutorials that might apply).

Thanks in advance.