if($j('#pinButton').length)
{
   var oldPinHref = $j('#pinButton').attr('href');
   var postDescription = $j('#content em').first().parent().text();
   if(postDescription.length <= 500)
      $j('#pinButton').attr('href', oldPinHref.substring(0,
          oldPinHref.indexOf('&description=')) +
          '&description=' + encodeURIComponent(postDescription));
   $j.getScript('http://assets.pinterest.com/js/pinit.js');
}