title: JQuery plugin to animate overlay
body: <p>I'm looking for a JQuery plugin to animate the appearance and disappearance of an overlay div.    Something like what Rackspace has here:</p>
  
  <p><a href="http://www.rackspacecloud.com/" rel="nofollow noreferrer">http://www.rackspacecloud.com/</a></p>
  
  <p>After staring at the page for 30 seconds or so, a div comes sliding down from the top asking you whether you want to chat with a rep.  If you ignore the div for a period of time it slides back up.</p>
  
  <p>I know I could hand code all this using timers and animate() and such, but hoping someone has done it for us already.</p>
  
  <p>Any ideas?</p>