title: add event on month week and day button of full calender 2.0.3
body: <p>I am using full calendar v2.0.3 of jquery. I want to add some function on month, week and day button. For that I used on() method like -</p>
  
  <pre><code>$(".fc-agendaWeek-button").on( "click", function() {
    alert( "Goodbye!" ); 
  });
  </code></pre>
  
  <p>But this is not working. I don't know why.
  Please share your ideas. Thanks in advance.</p>