The following code shows how to toggle dropdown with link.
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" type="text/css"
href="http://netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/css/bootstrap-combined.min.css">
<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>
<script type='text/javascript'>//<![CDATA[
window.onload=function(){<!-- w w w. j a v a 2 s . c om-->
$(function(){
$(".dropdown-toggle").click(function(){
$(this).dropdown('toggle');
});
});
}//]]>
</script>
</head>
<body>
<div class="dropdown">
<a href="javascript:void(0)" class="dropdown-toggle">Dropdown
<b class="caret"></b>
</a>
<ul class="dropdown-menu">
<li><a href="#">Action</a></li>
<li><a href="#">Another action</a></li>
<li><a href="#">Something here</a></li>
</ul>
</div>
</body>
</html>