Accessing functions on the root timeline

What I have is a movieclip that is nested within a movieclip on my main stage.

My question is, is there a way that I can access a function that is written on my root stage from within that movieclip?

In AS2 all you had to do was something like

_root.myFunction();

And that was it. Not the case in 3.0??

Is there a quick solution?

-Carmire