           <li class="dropdown" id="charts-menu">
                            <a href="#charts" class="dropdown-toggle" data-toggle="dropdown">
                                Charts <b class="caret"></b>
                            </a>
                            <ul class="dropdown-menu">
                                <li>
                                    <a href="graph_class.html">
                                        <i class="icon-list-alt"></i>&#160;Class hierarchy diagram
                   