anchor.diff:            </td>
             <td><%= pf.hidden_field :amount, "data-cents" => pf.object.amount * 100 %><span class="fee"><%= fcost(pf.object.amount) %></span></td>
             <td><%= pf.check_box :_destroy, :class => "delete_payment_item", :style => "display: none" %></td>
  -          <td><%= check_box_tag :anon, nil, :checked => "checked" %></td>
  +          <td><%= check_box_tag :anon, nil, true, :class => "anon" %></td>
           </tr>
         <% end %>
       </tbody>
  
positive.code:       });
        return (total_cents / 100).toFixed(2);
      }
      $(document).ready(function() {
        $("#anon").live("change", function() {
          var el = $(this);
          var del = findDeleteCheck(el);
          del.attr('checked', !el.attr('checked'));
          $("#total_field").html(calculateTotal());
        });
        // calculate initially
        $("#total_field").html(calculateTotal());
      });
  
negative.code:       all_values.each(function() {
          var el = $(this);
          var not_included = findDeleteCheck(el);
          if (not_included.prop('checked')) {
          }
          else
          {
  