title: Wikipedia style tooltip with jQuery
body: <p>What library is used for Wikipedia's tooltip when you hover over a reference link (<code>[1]</code>)?</p>
  <p>Or maybe there's a library that mimics that functionality (allowing you to insert a lot of different HTML elements and such).</p>
  <p>The desired library needs to be able to work with jQuery/jqUI (so it can't be prototype based and such) or it could just work on its own.</p>