Help with AS3-Movieclips & buttons

Hi, I was wondering if anyone can help me out to this. I'm new to AS3 and would like some input on a scripting issue I've been having. It's fairly simple and I have a movieclip that's nested in my Flash file that automatically plays and is like an intro to a website. The nested movieclip loops as the menu bar appears on the screen. I would like the movieclip to still keep looping and then stop once the user clicks on one of the buttons on the menu bar. Right now when you click on one of the buttons it goes to another frame, which I've told it to do so in the script, but it still plays the movieclip, which I don't want it to do. Can anyone help with this?

thanks!