title: jquery do something at the begin and end of animation
body: <p>I have the following JQuery code</p>
  
  <pre><code>        $("#classparent").click(function () {
              $(".classsubitems").slideToggle('slow', function () {
              });
          });
  </code></pre>
  
  <p>I need to let JQuery run some code at begin and end of animation.</p>
  
  <p>Is this possible?</p>
  
  <p>Thank you</p>