title: tweetboard effect sliding frame
body: <p>When you visit this link
  <a href="http://tweetboard.com/alpha/" rel="nofollow noreferrer">http://tweetboard.com/alpha/</a></p>
  
  <p>you will see a Tweets label on the left. When you click this tweets label, another site loads inside this panel/iframe.  Can you please help me understand how this feature is created?  It seems that I should be able to create this effect using standard HTML and jQuery.  </p>
  
  <p>If you can point me to the right resources to generate this kind of UI, that will be great.</p>
  
  <p>Thanks in advance.</p>