anchor.diff:                    <%= f.fields_for :registrant_choices, found_rc do |ec| %>
                       <%= ec.hidden_field :event_choice_id %>
                       <% if ec.object.event_choice.cell_type == "boolean" %>
  -                      <%= ec.check_box :value %>
  +                      <%= ec.check_box :value, :class => (primary ? "primary_checkbox" : "") %>
                         <% if choice.label.blank? %>
                           <%= ec.label :value, choice.event %>
                         <% else %>
  
positive.code:   $(function() {
      $( "#tabs" ).tabs({ heightStyle: "auto"});
    });
  </script>
  
negative.code:                 <span class="event_choice">
                    <% 
                      found_rc = nil
                      primary = false
                      if event.primary_choice == choice
                        primary = true
                      end
  
                      rc = @registrant.registrant_choices.each do |rc|
                      if rc.event_choice_id == choice.id
                        found_rc = rc
  