title: show/hide div with slide left\right animation
body: <p>I tried this here: <a href="http://jsfiddle.net/92HXT/1/" rel="noreferrer">http://jsfiddle.net/92HXT/1/</a> but it does not work.
  It only works if I use <code>show("slow")</code>/<code>hide("slow")</code>.</p>
  
  <p>Thanks.</p>