$(document).ready(
  function() {    
    $('form.review-helpfulness').each(      
      function () {                
        var target = '#review-helpfulness-' + $(this).children('input[name=id]').val();
        $(this).ajaxForm({success: updateReviewHelpfulness($(this), $(target))});
      }
    );
  }
);

function updateReviewHelpfulness(form, results) {
  return function (data, status) {
    form.hide();    
    results.hide();
    results.html(data)
    results.fadeIn();    
  }  
}