<link href="//netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/css/bootstrap-combined.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<div class="container">
<div class="row">
<div id="left" class="span3">
<ul id="menu-group-1" class="nav menu">
<li class="item-1 deeper parent active">
<a class="" href="#">
<span data-toggle="collapse" data-parent="#menu-group-1" href="#sub-item-1" class="sign"><i class="icon-plus icon-white"></i></span>
<span class="lbl">Menu Group i</span>
</a>
<ul class="children nav-child unstyled small collapse" id="sub-item-1">
<li class="item-2 deeper parent active">
<a class="" href="#">
<span data-toggle="collapse" data-parent="#menu-group-1" href="#sub-item-2" class="sign"><i class="icon-plus icon-white"></i></span>
<span class="lbl">Menu 1</span>
</a>
<ul class="children nav-child unstyled small collapse" id="sub-item-2">
<li class="item-3 current active">
<a class="" href="#">
<span class="sign"><i class="icon-play"></i></span>
<span class="lbl">Menu 1.1</span> (current menu)
</a>
</li>
<li class="item-4">
<a class="" href="#">
<span class="sign"><i class="icon-play"></i></span>
<span class="lbl">Menu 1.2</span>
</a>
</li>
</ul>
</li>
<li class="item-5 deeper parent">
<a class="" href="#">