title: Checking if element change state from hidden to visible
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/4948323/jquery-event-handler-div-becomes-visible-hidden">jquery event handler: div becomes visible/hidden</a>  </p>
  </blockquote>
  
  
  
  <p>Can I set an event to trigger after some element is hidden and then is set to visible by js?</p>
  
  <p>And also can I detect if js has added class to element?</p>
  
  <p>I'm working with jQuery</p>