anchor.diff:          border-right-style:none;
           border-left-style:none;
           border-top-style:none;
  -        margin-right:7px;
  +        margin-right:12px;
           color: white;
           position: relative;
           left: 10px;
  
positive.code:          background-color: #ffffff;
           font-size: 1px;
           color: #ffffff;
           padding-right:4px;
       }
  
       .toggle
  
negative.code:           <!-- <img src="images/tree_${structure}.png" align="top" height="16" width="15"/> -->
            <span class="tree_${structure}">
              <span class="ver"></span>
              <span class="hor">-</span>
            </span>
  
          </c:forEach>
  