anchor.diff:                  t("assignment.display_grader_names_to_students") ) %>&nbsp;&nbsp;
       <%= raw( f.radio_button :display_grader_names_to_students,
                          true,
  -                       :checked => @assignment.display_grader_names_to_students ) %>
  +                       :checked => @assignment.display_grader_names_to_students ,
  +                       :onchange => "set_onbeforeunload(true);" ) %>
       <%= raw( f.label :display_grader_names_to_students_true,
                   t("answer_yes"),
                   :class => "radio_label" ) %>&nbsp;&nbsp;
       <%= raw( f.radio_button :display_grader_names_to_students,
                          false,
  -                       :checked => !@assignment.display_grader_names_to_students ) %>
  +                       :checked => !@assignment.display_grader_names_to_students, 
  +                       :onchange => "set_onbeforeunload(true);" ) %>
       <%= raw( f.label :display_grader_names_to_students_false,
                   t("answer_no"),
                   :class => "radio_label" ) %>
  
positive.code:                                 :after_close => "check_due_date(
                                                      $F('remark_due_date'))",
                                  :year_range => 0.years.ago..1.years.from_now,
                                  :id => "remark_due_date"} ) %>
      <%= observe_field "remark_due_date",
                        :function => "check_due_date($F('remark_due_date'));" %>
      <%=t(:iso_due_date_format_example)%><br />
      <%= raw( f.label("remark_message",
                  I18n.t("assignment.remark.message"),
                  :class => "textbox_label") ) %>
      <%= raw( f.text_area :remark_message, :rows => 8, :cols => 65 ) %>
    </p>
  </fieldset>
  
  <%= f.submit t(:submit) %>
  <% end %>
  
  </div>
  
negative.code:   <legend><%= t("assignment.properties") %></legend>
      <%= raw( f.label :short_identifier, t(:short_identifier) ) %>
      <% if @assignment.id.nil? %>
        <%=raw( f.text_field :short_identifier ,
                         :onchange =>  "set_onbeforeunload(true);
                         $('assignment_repository_folder').setValue($(this).getValue())" )%><br />
      <% else %>
        <%= raw( f.text_field :short_identifier ,
                              :onchange =>  "set_onbeforeunload(true);" ) %><br />
      <% end %>
  
      <%= raw( f.label :description, t(:name) ) %>
      <%= raw( f.text_field :description,
                            :onchange => "set_onbeforeunload(true);" ) %><br />
      <%= raw( f.label :message ) %>
      <%= raw( f.text_area  :message, 
                            :rows => 8, :cols => 65,
                            :onchange => "set_onbeforeunload(true);" ) %><br />
  
      <% if !@sections.empty? %>
        <div id="section_due_dates_type_form_right" class="information">
  