function changeImage(image, start, end, current) {
  if (current == end) {
    current = start;
  }
  else {
    current++;
  }

  imageObject = eval(image);
  imageObject.src = "index_files/rotate" + current + ".jpg";
  return current;
}

function rotateImages(image, current, delay) {
  current = changeImage(image, 1, 14, current);
  call = "rotateImages('" + image + "', " + current + ", 10000);";
  window.setTimeout(call, delay);
}