title: Jquery and twitter bootstrap make active tab doesnt work
body: <p>In twitter bootstrap js tabs i have to add a class "active" to a li element. </p>
  
  <p>I obtain the hash from the url. I apply the class active to the tab but it doesnt get the focus.</p>
  
  <p>I want to make the second tab active when the url have a certain hash.</p>
  
  <p>Source code: 
  <a href="http://jsfiddle.net/Chumillas/dU458/#example">http://jsfiddle.net/Chumillas/dU458/#example</a></p>