title: Getting child element of a child element of a parent with ID
body: <p>I need to get to the child of the child of the child of an element with an id = "part1" with javascript. So essentially, I want to get to the 3rd row of the 3rd table of the span element but I can't seem to get it to work :(</p>
  
  <pre><code>&lt;span id = "part1"&gt;
  &lt;table&gt; &lt;/table&gt;
  &lt;table&gt; &lt;/table&gt;
  &lt;table&gt;
      &lt;tr&gt; ... &lt;/tr&gt; 
      &lt;tr&gt; ... &lt;/tr&gt; 
      &lt;tr&gt; ... &lt;/tr&gt; (get this row)
  &lt;/table&gt;
  &lt;/span&gt;
  </code></pre>