setInterval Loop

Hey all,
I’ve got a question/problem. I’ve got a flashmovie and I want it to play every 15 seconds…so 15 seconds pause. I tried to make it work it with following code:


stop();

setInterval(this,"startMC",15000); 

function startMC() {
    _root.gotoAndPlay(1);
}

And it does work, but after a while it just keeps looping, without the pause of 15 seconds… I think there’s a bug or something. Any of you guys know what to do?

thanks,
mane.