anchor.diff:  <% if all_assignments_marked? %>
     <% @heading_buttons.push(
     {
  -   link_text: t('browse_submissions.download_groupings_files'),
  -   link_path: download_groupings_files_assignment_submissions_path(
  -              groupings: @groupings)
  +    link_text: t('browse_submissions.download_groupings_files'),
  +    link_path: download_groupings_files_assignment_submissions_path(
  +               groupings: @groupings)
     }) %>
   <% else %>
     <% @heading_buttons.push(
     {
  -       link_text: t('browse_submissions.download_groupings_files'),
  -       link_path: download_groupings_files_assignment_submissions_path(
  -                  groupings: @groupings),
  +    link_text: t('browse_submissions.download_groupings_files'),
  +    link_path: download_groupings_files_assignment_submissions_path(
  +               groupings: @groupings),
       html_options: {confirm: t('collect_submissions.marking_incomplete_warning')}
     }) %>
   <% end %>
  
positive.code:       @groupings.all? {|grouping| grouping.get_ta_names.size == 1} %>
    <% @heading_buttons.push(
      {
           link_text: t('collect_submissions.collect_ta'),
           link_path: collect_ta_submissions_assignment_submissions_path(@assignment),
        html_options: { confirm: t('collect_submissions.results_loss_warning') }
     }) %>
    <span class='menu_bar'></span>
  <% elsif @current_user.ta? and @assignment.past_collection_date? %>
    <% @heading_buttons.push(
    {
         link_text: t('collect_submissions.collect_ta'),
         link_path: '#',
      html_options: {   id: 'disable',
                     title: t('collect_submissions.disable_collect')
                    }
    }) %>
  <% end %>
  
negative.code:   <% if @current_user.ta? %>
      <span class='menu_bar'></span>
      <%= t('browse_submissions.how_many_marked',
            num_marked: @current_user.get_num_marked(@assignment),
            num_assigned: @current_user.get_num_assigned(@assignment)) %>
    <% end %>
  <% end %>
  