$(function() {
  $("table").tablesorter({ theme : 'blue' });
});

<table class="tablesorter">
  <thead>
    <tr>
      <th colspan="5">Sort All Columns</th>
    </tr>
    <tr>
      <th rowspan="2">Index</th>
      <th colspan="2">First Group</th>
      <th colspan="2">Second Group</th>
    </tr>
    <tr>
      <th>Natural Sort</th>
      <th>Numeric</th>
      <th id="test">Animals</th>
      <th>Url</th>
    </tr>
  </thead>
  <tfoot>
    <tr>
      <th>Index</th>
      <th>Natural Sort</th>
      <th>Numeric</th>
      <th id="test">Animals</th>
      <th>Url</th>
    </tr>
  </tfoot>
  <tbody>
    <tr><td>0</td><td>abc 123</td><td>10</td><td>Koala</td><td>http://www.google.com</td></tr>
    <tr><td>1</td><td>abc 1</td><td>234</td><td>Ox</td><td>http://www.yahoo.com</td></tr>
    <tr><td>2</td><td>abc 9</td><td>10</td><td>Girafee</td><td>http://www.facebook.com</td></tr>
    <tr><td>3</td><td>zyx 24</td><td>767</td><td>Bison</td><td>http://www.whitehouse.gov/</td></tr>
    <tr><td>4</td><td>abc 11</td><td>3</td><td>Chimp</td><td>http://www.ucla.edu/</td></tr>
    <tr><td>5</td><td>abc 2</td><td>56</td><td>Elephant</td><td>http://www.wikipedia.org/</td></tr>
    <tr><td>6</td><td>abc 9</td><td>155</td><td>Lion</td><td>http://www.nytimes.com/</td></tr>
    <tr><td>7</td><td>ABC 10</td><td>87</td><td>Zebra</td><td>http://www.google.com</td></tr>
    <tr><td>8</td><td>zyx 1</td><td>999</td><td>Koala</td><td>http://www.mit.edu/</td></tr>
    <tr><td>9</td><td>zyx 12</td><td>0</td><td>Llama</td><td>http://www.nasa.gov/</td></tr>
  </tbody>
</table>