title: Fade a class in?
body: <p>I've got a <code>&lt;td&gt;</code>. It has a class applied which specifies a background color. Can I fade-in to a different class, which just has a different background color? Something like:</p>
  
  <pre><code>// css
  .class1 {
    background-color: red;
  }
  
  .class2 {
    background-color: green;
  }
  
  $('#mytd').addClass('green'); // &lt;- animate this?
  </code></pre>
  
  <p>Thanks</p>