Start Over after idle

2

just have sumthing like

 
timer = 0;
function timing() {
 timer++;
 if (timer == 1800) {
  timer = 0;
  gotoAndPlay(1);
 }
}
if (timer=0) {
 timing();
}

off the top of my head, sorri i cant check it. im not at my house atm.