Controlling movie clips

Hi there,

I am struggling (new to programming). I have created a website on the time line. There is actionscipt contolling which frame to play via a button. Within this button is a movieclip with a fade in using alpha on its own timeline with a stop(); at the end.

The problem is I only want it to play when you first see it from moving to that page from the main timeline. Currently if i move over the button it plays the movie again which i dont want to happen. I do however want to retain the over states etc for the button.

Hope that makes sense

Thanks for any help!