anchor.diff:    </tr>
   </table>
   
  -
   <div class="hidden">
  -
     <!-- When run-tests is clicked the javascript preRunTests() function copies  -->
     <!-- the contents of each editArea tab back to its hidden textarea (below)   -->
     <!-- before submitting the form. On the server rails grabs the file contents -->
     <!-- from these hidden textareas and not from the tabbed_files editArea.     -->
  -  <% @manifest[:visible_files].each do |filename,file| -%>
  -    <!-- This outer div is needed for run_tests_outcome from run_tests.js.rjs -->
  -    <div id="<%=filename-%>_div">
  -      <textarea id="<%=filename-%>" 
  -                name="<%=filename-%>"><%= h file[:content] -%></textarea> 
  -      <% file.delete :content -%>
  -    </div>
  -  <% end -%>
  +  <div id="visible_files_container">
  +    <% @manifest[:visible_files].each do |filename,file| -%>
  +      <!-- This outer div is needed for run_tests_outcome from run_tests.js.rjs -->
  +      <div id="<%=filename-%>_div">
  +        <textarea id="<%=filename-%>" 
  +                  name="<%=filename-%>"><%= h file[:content] -%></textarea> 
  +        <% file.delete :content -%>
  +      </div>
  +    <% end -%>
  +  </div>
   
     <div id="manifest.rb_div">
         <textarea id="manifest.rb_div" 
  
positive.code:           </tr>
  		<% end -%>
  	  </table>
  
      </td>
      <td>
        <!-- EditArea turns this textarea into a tabbed edtitor. Each -->
        <!-- visible file has a tab in this editor. Javascript copies -->
        <!-- the contents of each individual hidden textarea (below)  -->
        <!-- into this tabbed editor. -->
        <table cellpadding="7" 
               id="tabbed_files_border" 
               class="<%=@outcome-%>">
  
negative.code: 
  <table cellpadding="0" 
         cellpadding="0">
    <tr valign="top">
      <td class="file-manager panel">
        <table>
          <tr>
            <td>
             <div id="shown_increment_number">
               <span class="increment-box" 
                     title="current increment"-%>
                 <%= @shown_increment_number -%>
               </span>
             </div>
  