orbit4-5/app/templates/orbit_bootstrap/home/menu.html.erb

<ul class="nav navbar-nav" data-menu-level="0">
  <li class="dropdown">
    <a href="#" class="dropdown-toggle" data-menu-link="true">{{link_name}}</a>
    <ul class="dropdown-menu" data-menu-level="1">
      <li>
        <a href="index.html" data-menu-link="true">{{link_name}}</a>
        <ul data-menu-level="2">
          <li>
            <a href="index.html" data-menu-link="true">{{link_name}}</a>
          </li>
        </ul>
      </li>
    </ul>
  </li>
</ul>