The following code shows how to create accordion group.
<!DOCTYPE html>
<html>
<head>
<script type='text/javascript'
src='http://code.jquery.com/jquery-1.9.1.js'></script>
<link rel="stylesheet" type="text/css"
href="http://netdna.bootstrapcdn.com/twitter-bootstrap/2.3.1/css/bootstrap-combined.min.css">
<script type='text/javascript'
src="http://netdna.bootstrapcdn.com/twitter-bootstrap/2.3.1/js/bootstrap.min.js"></script>
</head><!--from w w w . j a va 2s . c o m-->
<body style='margin:30px'>
<div class="accordion" id="monogram-acc">
<div class="accordion-group">
<div class="accordion-heading">
<div class="accordion-toggle" data-toggle="collapse"
data-parent="monogram-acc" href="#Animals">Animals</div>
</div>
<div class="accordion-body collapse" id="Animals"> content</div>
</div>
<div class="accordion-group">
<div class="accordion-heading">
<div class="accordion-toggle" data-toggle="collapse"
data-parent="monogram-acc" href="#Food">Food</div>
</div>
<div class="accordion-body collapse" id="Food"> content</div>
</div>
</div>
</body>
</html>