title: jQuery - how to select a tr that contains th's?
body: <p>Title pretty much says it all.<br>
  Given a table like</p>
  
  <pre><code>&lt;table&gt;
    &lt;tr&gt;
      &lt;th&gt;Header 1&lt;/td&gt;
      &lt;th&gt;Header 2&lt;/td&gt;
    &lt;/tr&gt;
    &lt;tr&gt;
      &lt;td&gt;Datum 1&lt;/td&gt;
      &lt;td&gt; Datum 2&lt;/td&gt;
    &lt;/tr&gt;
    &lt;tr&gt;
      &lt;td&gt;Datum 1&lt;/td&gt;
      &lt;td&gt; Datum 2&lt;/td&gt;
    &lt;/tr&gt;
  &lt;/table&gt;
  </code></pre>
  
  <p>How to select the row which contains the th headers and no other?</p>