title: triggering a function after Fullcalendar eventAfterAllRender
body: <p>I have my fullcalendar script in a separate file and it already has "eventAfterAllRender" set.</p>
  
  <p>Now in another js file, I try to trigger clicking on a button on the page on the load, where there is a fullcalendat on the same page too.</p>
  
  <p>So, when i run the code, on the load, the events are not rendered. what i want is to have something like</p>
  
  <pre><code>$("calendar").fullCalendar({
      eventAfterAllRender: function() {$("#button").click();}
  })
  </code></pre>
  
  <p>but what happens is that it overwrites the already existing default function in eventAfterAllRender for my fullCalendar. </p>
  
  <p>What I want is to extend <code>eventAfterAllRender</code> option in my <code>fullcalendar</code> and
   <code>$("#button).click()</code> after the default function in eventAfterAllRender is executed.</p>
  
  <p>How is it possible? :)</p>