NOTE! Set the emptyTo selector below:

Demo

Set emptyTo option:
*Account #
First Name
Last Name
Age
Total
Discount
Diff
A43 Peter Parker 28 20.3% +3
A255 Hood 19.99 25.1% -7
Clark 18 15.89 44.2% -15
A1 Bruce Almighty 45 153.19 +19
A102 Bruce Evans 56 153.19 23%
A109 Larry Stevens 56 153.19 23% 0
A99 John Smithy 56 156 22%
A119 Mike Rowe 55 -53.99 13% 0
* Note: The "Account #" column has the "empty-top" class name set which over-rides the emptyTo option (see the order of priority note above).

Javascript

$(function() {
  // call the tablesorter plugin
  $("table").tablesorter({
    theme : 'blue',

    // default "emptyTo"
    emptyTo: 'bottom'
  });
});

HTML

<table class="tablesorter">
  <thead>
    <tr>
      <th class="empty-top">*Account #</th> <!-- empty-top class has higher priority than the "emptyTo" option -->
      <th>First Name</th>
      <th>Last Name</th>
      <th>Age</th>
      <th>Total</th>
      <th>Discount</th>
      <th>Diff</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>A43</td>
      <td>Peter</td>
      <td>Parker</td>
      <td>28</td>
      <td></td>
      <td>20.3%</td>
      <td>+3</td>
    </tr>
    <tr>
      <td>A255</td>
      <td></td>
      <td>Hood</td>
      <td></td>
      <td>19.99</td>
      <td>25.1%</td>
      <td>-7</td>
    </tr>
    <tr>
      <td></td>
      <td>Clark</td>
      <td></td>
      <td>18</td>
      <td>15.89</td>
      <td>44.2%</td>
      <td>-15</td>
    </tr>
    <tr>
      <td>A1</td>
      <td>Bruce</td>
      <td>Almighty</td>
      <td>45</td>
      <td>153.19</td>
      <td></td>
      <td>+19</td>
    </tr>
    <tr>
      <td>A102</td>
      <td>Bruce</td>
      <td>Evans</td>
      <td>56</td>
      <td>153.19</td>
      <td>23%</td>
      <td></td>
    </tr>
    <tr>
      <td>A109</td>
      <td>Larry</td>
      <td>Stevens</td>
      <td>56</td>
      <td>153.19</td>
      <td>23%</td>
      <td>0</td>
    </tr>
    <tr>
      <td>A99</td>
      <td>John</td>
      <td>Smithy</td>
      <td>56</td>
      <td>156</td>
      <td>22%</td>
      <td></td>
    </tr>
    <tr>
      <td>A119</td>
      <td>Mike</td>
      <td>Rowe</td>
      <td>55</td>
      <td>-53.99</td>
      <td>13%</td>
      <td>0</td>
    </tr>
  </tbody>
</table>

Next up: Change the default multi-sorting key ››