anchor.diff:          </table>
       </body>
       <script>
  -        function viewData(id) {
  +        function showData(id) {
               var tr = document.getElementById("row:" + id);
               var nodes = tr.childNodes;
               var length = nodes.length;
  
positive.code:                     <td>email</td>
                      <td>phone number</td>
                      <td>salary</td>
                      <td>overview</td>
                  </tr>
              </thead>
              <tbody>
  
negative.code:                     <td><%= resultSet.getString("phone_number")%></td>
                      <td><%= resultSet.getDouble("salary")%></td>
                      <td>
                          <a href="#" onclick="showData(<%= resultSet.getInt("employee_id")%>); return false;">show data</a>
                      </td>
                  <tr/>
                  <%
  