The following code shows how to put form inside Accordion.
<!DOCTYPE html>
<html>
<head>
<script type='text/javascript'
src="http://code.jquery.com/jquery-1.10.1.min.js"></script>
<script type='text/javascript'
src="http://netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/js/bootstrap.min.js"></script>
<link rel="stylesheet" type="text/css"
href="http://netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/css/bootstrap-combined.min.css">
<!--from www . j ava 2 s.c om-->
</head>
<body>
<div class="container">
<div class="accordion" id="searchAccordion">
<div class="accordion-group">
<div class="accordion-heading">
<a class="accordion-toggle" data-toggle="collapse"
data-parent="#searchAccordion" href="#collapseOne">Search</a>
</div>
<div id="collapseOne" class="accordion-body collapse in">
<div class="accordion-inner">
<form class="form-inline">
<div class="row-fluid">
<div class="span4">
<label>Postcode</label> <input class="input-medium" type="text" />
</div>
<div class="span4">
<label>ID</label> <input class="input-medium" type="text" />
</div>
<div class="span4">
<label>Region</label> <input class="input-medium typeahead"
id="taRegion" type="text" data-provide="typeahead"
autocomplete="off" />
</div>
</div>
<div class="row-fluid">
<div class="span3 offset1">
<label class="checkbox"> <input type="checkbox" />Include
completed?
</label>
</div>
<div class="span3">
<label class="checkbox"> <input type="checkbox" />Include
cancelled?
</label>
</div>
</div>
</form>
</div>
</div>
</div>
<div class="accordion-group">
<div class="accordion-heading">
<a class="accordion-toggle" data-toggle="collapse"
data-parent="#searchAccordion" href="#collapseTwo">Advanced
Options</a>
</div>
<div id="collapseTwo" class="accordion-body collapse">
<div class="accordion-inner">
<form class="form-inline">
<div class="row-fluid">
<div class="span4">
<label>Address</label> <input class="input-large" type="text" />
</div>
<div class="span4">
<label>Assessor</label> <input class="input-medium typeahead"
id="taAssessor" type="text" data-provide="typeahead"
autocomplete="off" />
</div>
<div class="span4">
<label>Client</label> <input class="input-large typeahead"
id="taClient" type="text" data-provide="typeahead"
autocomplete="off" />
</div>
</div>
<div class="row-fluid">
<div class="span4">
<label>Status</label> <input class="input-medium typeahead"
id="taStatus" type="text" data-provide="typeahead"
autocomplete="off" />
</div>
<div class="span4">
<label>Type</label> <input class="input-large typeahead"
id="taType" type="text" data-provide="typeahead"
autocomplete="off" />
</div>
<div class="span4">
<label>Department</label> <input class="input-medium typeahead"
id="taDepartment" type="text" data-provide="typeahead"
autocomplete="off" />
</div>
</div>
<div class="row-fluid">
<div class="span3">
<label>Client Ref</label> <input class="input-small"
type="text" />
</div>
<div class="span3">
<label>PO Number</label> <input class="input-small" type="text" />
</div>
</div>
</form>
</div>
</div>
</div>
</div>
</div>
</body>
</html>