Shuffle - array?

Hi-
having trouble deciding how this problem should be solved.
I have a three item menu:

A
B
C

when the user clicks on A - i want the menu to reorder, so that A moves down to the C postion and C and B move up - and so on with the other possibilities…

Do i create an array of movie clips and .y positions? Or is this a Tell Target situation?
As you can see i am not sure how to start.

thanks in advance for any help.

cheers

Shawn