How to pause a rotating object?

Hi all,
I’m a totally newbie to flash, and I’m here to search anyone who can help on this. I’m doing a rotating object which inner part can be clicked, but now what I need is to pause it when I mouse over the clickable’s location, and to play again when the mouse roll out the location. But for now I only can make the rotating object stop totally by using the action scripts. Can anyone tell me how to do this? What I want is to pause the rotating object only not stop and play again… I appreciate any help…Thanks.:}