var imgs = new Array(); var imgcnt = 0; var thisimg = 0;
imgs[imgcnt++] = 'images\/news\/smoke_detector.jpg';
imgs[imgcnt++] = 'images\/news\/smoke_detector2.jpg';

 
function rotate() {
if (document.images) {
  thisimg++;
  if (thisimg >= imgcnt) thisimg = 0;
  document.rollimg.src = imgs[thisimg];
  setTimeout("rotate();",1500);
}
}
setTimeout("rotate();",10000);