anchor.diff:  
   <%@ page import="java.util.Vector"%>
   <%@ page import="org.LexGrid.concepts.Concept" %>
  +<%@ page import="gov.nih.nci.evs.browser.utils.HTTPUtils" %>
   
   <script type="text/javascript" src="<%= request.getContextPath() %>/js/yui/yahoo-min.js" ></script>
   <script type="text/javascript" src="<%= request.getContextPath() %>/js/yui/event-min.js" ></script>
  
positive.code:           <div id="treecontainer"></div>
            <form id="pg_form">
              <%
                String ontology_node_id = (String) request.getParameter("code");
              %>
              <input type="hidden" id="ontology_node_id" name="ontology_node_id" value="<%=ontology_node_id%>" />
              <%
                String ontology_display_name = (String) request.getParameter("dictionary");
              %>
              <input type="hidden" id="ontology_display_name" name="ontology_display_name" value="<%=ontology_display_name%>" />
            </form>
  
negative.code: <%
    String basePath = request.getContextPath();
  %>
  
  <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
  <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
    <head>
  