$(function(){
  scrollerHeight = $('div#scroller').height();
  $('div#scroller').css('overflow', 'hidden').wrapInner('<div style="overflow: hidden; margin-top: ' + scrollerHeight + 'px;" />').wrapInner('<div style="overflow: hidden; height: ' + scrollerHeight + 'px;" />');
});
$(window).load(function () {
  scrollerHeight = $('div#scroller').height();
  scrollHeight = $('div#scroller div:first div:first').height();
  scrollDuration = scrollHeight * 1000 / scrollerHeight * 10;
  function runScroller (noReset) {
    if (!noReset) {
      $('div#scroller div:first div:first').css('margin-top', scrollerHeight);
    }
    $('div#scroller div:first div:first').animate({'margin-top' : scrollHeight * -1}, scrollDuration, 'linear', runScroller);
  }
  runScroller();
  $('div#scroller').hover(
    function () {
      $('div#scroller div:first div:first').stop();
    },
    function () {
      runScroller(true);
    }
  );
});