Cross-clip actionscript

Hi all,

Is it possible to have the actionscript in one movieclip control a seperate movieclip in an HTML page?

or…

To have a CSS list menu that can control a movieclip in the html page that they are in?

What I want is to have a small menu on the far left of the page with a rollover/hover state that will play a movieclip that is elsewhere on the page.

Is that possible?