title: jquery Tablesorter pager not disabling the buttons
body: <p>I am newly using jquery tablesorter with pager add on. It works fine with sorting. When i go for pagination, it's not adding disabled class to the buttons when it reaches the extreme pages. FYI, my pagerOption is</p>
  
  <pre><code>     {
              container: $('#pager'),
              size: 2,
              positionFixed: false,
              updateArrows: true,
              cssNext: '.next',
              cssPrev: '.prev',
              cssFirst: '.first',
              cssLast: '.last',
              cssPageDisplay: '.pagedisplay',
              cssPageSize: '.pagesize',
              cssDisabled: 'disabled',             
              cssErrorRow: 'tablesorter-errorRow',
        }
  </code></pre>
  
  <p>And one more thing, i'm using div and form elements. I think it is not the cause, other pager functions works fine except this. Kindly help.</p>