anchor.diff:              <option value="WORDNET">WordNet</option>
               <option value="RANDOMHOUSE">RandomHouse</option>
       <%
  -    } else if ("WEBSTER".equals(WordLinker.dictionary)) {
  +    } else if (Dictionary.WEBSTER==WordLinker.getValidDictionary(request.getParameter("dict"))) {
       %>
               <option value="ICIBA">爱词霸</option>
               <option value="YOUDAO">有道</option>
  
positive.code: 
  <%@ page contentType="text/html;charset=UTF-8" language="java" %>
  <%@ page import="org.apdplat.superword.tools.WordLinker" %>
  
          <select name="dict" id="dict">
      <%
          if ("ICIBA".equals(WordLinker.dictionary)) {
      %>
              <option value="ICIBA" selected="selected">爱词霸</option>
              <option value="YOUDAO">有道</option>
  
negative.code:             <option value="WORDNET" selected="selected">WordNet</option>
              <option value="RANDOMHOUSE">RandomHouse</option>
      <%
      } else if (Dictionary.RANDOMHOUSE==WordLinker.getValidDictionary(request.getParameter("dict"))) {
      %>
              <option value="ICIBA">爱词霸</option>
              <option value="YOUDAO">有道</option>
  