title: jquery.validate.js javascript error
body: <p>Trying to run following validation code but jquery.validate.js fails. Did anyone experianced this? I'm using jquery 1.7.2. on Firefox 12.0. After further investigation of the problem I learned that the problem arises only when there are tinymce elements in the form.</p>
  
  <pre><code>&lt;script&gt;
  $(document).ready(function() {
      $('#simple_form').validate();
  });
  &lt;/script&gt;
  </code></pre>
  
  <p>Here's the error.</p>
  
  <pre><code>classes.split is not a function
  classes &amp;&amp; $.each(classes.split(' '), function() {
  </code></pre>