><option>python</option><option>swf</option></select></div></div>              <div class="well sidebar-nav">                <div id="nav"></div>              </div>            </div>            <div class="span9"><div class="page-header">                    <h4><small>package thx</small></h4>    <h1><small>abstract</small>            Semigroup&lt;<span class="type">A</span>&gt;(<span class="type">A</span>&nbsp;&#8209;&gt;&nbsp;<span class="type">A</span>&nbsp;&#8209;&gt;&nbsp;<span class="type">A</span>)  