title: Cannot set duration for carouFredSel Slider
body: <p>I am using <code>carouFredSel</code> to make Slider, but duration cannot be set. It may run default.</p>
  
  <p>I set like :</p>
  
  <pre><code>$("#foo6").carouFredSel({
      auto: true,
      responsive: true,
      duration: 2000,
      prev: "#prev6",
      next: "#next6",
      scroll: 1,
      pagination: "#pager6",
      mousewheel: true,
      items: {
          visible: 1,
          width: 200
      }
  });
  </code></pre>
  
  <p>Say me solution for my issue.</p>