<div class="btn-group dropdown-default">
<a class="btn dropdown-toggle" data-toggle="dropdown" href="#"> Dropdown <span class="caret"></span> </a>
<ul class="dropdown-menu ">
<li><a href="#">Arial</a>
<li><a href="#">Helvetica</a>
<li><a href="#">SegeoUI</a>
<div class="btn-group dropdown-default dropup">
<a class="btn dropdown-toggle" data-toggle="dropdown" href="#"> Dropdown <span class="caret"></span> </a>
<ul class="dropdown-menu ">
<li><a href="#">Arial</a>
<li><a href="#">Helvetica</a>
<li><a href="#">SegeoUI</a>