title: class not listening to events
body: <p>I have this javascript-code:</p>
  
  <pre><code>$('.get_summary').click(function(ev){
      alert("get_summary");
  });
  </code></pre>
  
  <p>html-buttons with that class are created dynamically in javascript. 
  With firebug I can see that the button got the class "get_summary".
  However, when I click on the button nothing happens. Neither any error in the console are written.</p>
  
  <p>Looking at "Events"-panel in chrome I see that the button is actually not listening to any event. Why?
  I put an alert in the file where the class got bind to a function. And the alert shows up. I really dont know where I should look to understand why the class is not listening to the function. </p>