anchor.diff:    </tr>
   </table>
   
  -<div id="treemap-display" style="height: 500px;">
  -</div>    
  -
   <div style="margin-top: 14px;">
  -  <input id="go_to_parent" type="button" class="button" value="Go to Parent" />
  +  <input id="go_to_parent" type="button" class="button" value="Back" />
   </div>
   
   <script type="text/javascript">
  
positive.code:     injectInto: 'treemap-display',
      levelsToShow: 1,
      titleHeight: 32,
      animate: false, // animate
      offset: 0,
      cushion: useGradients,
      duration: 1000,
      Label: {
        type: "HTML", // labelType,
        size: 14,
        family: "Ubuntu"
      },
  
negative.code:   <div id="ajax_working">Loading heat map...</div>
  </div>
  
  <div id="treemap-display" style="height: 500px; border: 1px solid #C0C0C0;">
  </div>    
  
  <table width="100%" style="margin-top: 2px; border-spacing: 0; height: 4px;">
    <tr>
      <% HeatMapColorSupport.color_table.each do |color| %>
        <td style="background-color: <%= color.to_s %>"></td>
  