title: Limit Checkbox amount
body: <p>I have 20 Checkboxes. I need to disable 16 Checkboxes, if 4 checkboxes are selected. </p>
  
  <p>I tryed this begann with this jquery code</p>
  
  <pre><code>    $("input[type=checkbox][name=cate]:checked").each(
  
      function()
      {
      }
  
  );
  </code></pre>
  
  <p>What i need is if a user selects 4 checkboxes then all other checkboxes should be disabled.</p>