title: Undefined value after using .parentElement
body: <p>I don't know why but when I use <code>.parentElement</code> I get undefined but in Chrome debbuger I see that there is form, where is the bug?</p>
  
  <pre><code>$('.ZamIlosc').each(function () {
                  var tdstan = $(this).parentElement; 
     // ...forward code
  </code></pre>