Stopping a 'wait x seconds' action


At the first frame in my movie, I have a movieclip that has the below actionscript to make it continually fade between the latest news images (just plays, then I have a ‘stop’ on the next frame, and the same wait actionscript again). But it keeps going every 9 seconds even when i’m in a different part of the timeline that doesn’t even have the movieclip within it.

*var interval = setInterval(playFrame,9000,1);
function playFrame(frame) {
} *

How do I make it ONLY effect what is inside the movie clip, and not the main timeline?

Thanks so much.