function _scrollimage() {
  this.StartScroll = StartScroll;

  var scrollamount = 39;
  var scroll = 1;

  function StartScroll() {
    scroll--;
    $('#imagescroller').css('margin-top', scroll + 'px');

    if (scroll > -scrollamount * 8) {
      if (scroll % scrollamount != 0)
        setTimeout(StartScroll, 100)
      else
        setTimeout(StartScroll, 4000);
    } else {
      scroll = 1;
      setTimeout(StartScroll, 100);
    }
  }
}

scrollimage = new _scrollimage();
StartScroll = scrollimage.StartScroll;