anchor.diff:  								<li><a href="#">supports this</a></li>
   								<li><a href="#">weakens this</a></li>
   								<li><a href="#">proves this</a></li>
  -								<li><a href="#">refutes this</a></li>
  +								<li class="last"><a href="#">refutes this</a></li>
   							</ul>
   						</li>
   						<li>
   							<a href="#">topics
   						</li>
  -						<li>
  +						<li class="last">
   							someone who
   							<ul>
   								<li><a href="#">should participate</a></li>
  
positive.code: 				top: 0;
  				display: block;
  			}
  			.context li {
  				position: relative;
  				white-space: nowrap;
  				padding: 5px 10px;
  				cursor: pointer;
  				font-family: "Helvetica", Arial, sans-serif;
  				font-size: 9pt;
  
negative.code: 						</li>
  					</ul>
  				</li>
  				<li class="last">
  					I want
  					<ul>
  						<li>
  							<a href="#">to know about</a>
  						</li>
  						<li class="last">
  							<a href="#">ask/tell someone about</a>
  						</li>
  					</ul>
  