The following code shows how to toggle list items.
<!DOCTYPE html>
<html>
<head>
<script type='text/javascript'
src="http://cdnjs.cloudflare.com/ajax/libs/jquery/1.8.3/jquery.js"></script>
<script type='text/javascript'
src="http://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/2.2.2/bootstrap.min.js"></script>
<link rel="stylesheet" type="text/css"
href="http://netdna.bootstrapcdn.com/twitter-bootstrap/2.2.2/css/bootstrap-combined.min.css">
<style type='text/css'>
.row-fluid>.sidebar {
width: 280px;
position: absolute !important;
left: auto;
}<!--from ww w.ja v a2 s. c o m-->
</style>
</head>
<body>
<div class="container-fluid">
<div class="row-fluid">
<div class="sidebar">
<div class="well sidebar-nav">
<ul class="nav nav-list">
<li class="nav-header">Header</li>
<li class="divider"></li>
<li>
<a href="#" data-toggle="collapse" data-target="#toggle">Toggle</a>
</li>
<ul id="toggle" class="collapse out">
<li><a href="#">Item A</a>
<span class="label pull-right">2</span></li>
<li><a href="#">Item B</a>
<span class="label pull-right">1</span>
</li>
</ul>
</ul>
</div>
</div>
</div>
</div>
</body>
</html>