title: Select innerHTML from First <td> of Last <tr> -- jQuery
body: <p>I have some rows in a table like this: <code>&lt;tr class="problem_display_work&gt;</code> which have two <code>&lt;td&gt;</code>s each.</p>
  
  <p>I'm trying to select/alert the innerHTML like this: <code>alert($('tr.problem_display_work td:first-child').innerHTML);</code> but it's not working.</p>
  
  <p>What am I missing here?</p>