<ul class="dropdown-menu" role="menu">
<li><a href="#" id="theme_slate">Gunmetal gray</a>
<li><a href="#" id="theme_cyborg">Black</a>
<ul class="dropdown-menu" role="menu">
<li><a href="#" id="theme_slate">Gunmetal gray</a>
<li><a href="#" id="theme_cyborg">Black</a>