title: Detecting "enter" keyup event on checkbox
body: <p>I've got a checkbox called 'beveiligdj'.
  It looks like this:</p>
  
  <pre><code>&lt;label&gt;&lt;input type="checkbox" id="beveiligdj" name="beveiligdj" value="j"&gt;Ja&lt;/label&gt;
  </code></pre>
  
  <p>When you select it (by keyboard) and then press enter, it should go to the <code>#beveiligdn</code> input (also a checkbox) But it does not!</p>
  
  <pre><code>   $('#beveiligdj').keyup(function(event) {
  
      if(event.keyCode == 13) {
          checked = $('#beveiligdj').is(':checked');
  
          if(checked) {
              $('#beveiligdn').focus();
          }
      }
  
     });
  </code></pre>
  
  <p>It just goes to the following field. 
  How can I fix that?</p>