title: Why jQuery UI Sortable isn't working?
body: <p>i'm trying to implement on my page the jQuery UI Sortable plugin, but it isn't working.<br />
  Can anyone help me with this error? I think it might be something simple that is escaping me.</p>
  <p>the link to preview is: <a href="http://jsbin.com/ebixi3" rel="nofollow noreferrer">http://jsbin.com/ebixi3</a><br />
  the link to jsbin edit is: <a href="http://jsbin.com/ebixi3/edit" rel="nofollow noreferrer">http://jsbin.com/ebixi3/edit</a></p>
  <p>Thanks all in advance.</p>