anchor.diff:  
           <!-- Iterate over all hashes and display the version and link
                corresponding to each hash -->
  -        <% @version_fileId_map.each do |each_version, review_file_id| %>
  +        <% @version_fileId_map.sort.each do |each_version, review_file_id| %>
               <% if each_version.to_s == @current_review_file.version_number.to_s %>
                   <td class="version_number current_version" >
                     <%= link_to each_version, :controller => 'review_files',
  
positive.code:           padding: 6px;
            z-index:3;
            color: black;
            background-color: rgba(206, 212, 211, 0.93);
            border:1px solid black;
            border-radius:5px;
            -moz-border-radius:5px;
  
negative.code:       tr.highlight :hover { font-weight: bold;  }
  
        td.version_number {
            background-color: #faee7f;
            border-left: thin solid gray;
            border-right: thin solid gray;
            border-top: thin solid gray;
  