Object Oriented Question

Hey guys, I realize this puts me totally in the realm of freak but here goes.

I am dynamically creating a movieclip, say, a ball.

I want to apply a movement to each new ball created.

I have created a movement function and now I need to know how to use this function as a method on each newly created ball.

Would I do something like this:

ball.moveThis();

or

moveThis(ball);

Please let me know if you need me to explain further.