buttonDropdowns don't work

[xuqingxin]

I'm using Grails 2.3.6 and KickstartWithBootstrap 1.1.0.

I added the following sample buttonDropdown code from getbootstrap.com into the gsp view. The button and caret display correctly, but no dropdown menu displays when caret is clicked.

<div class="btn-group">
<button type="button" class="btn btn-danger">Action</button>
<button type="button" class="btn btn-danger dropdown-toggle" data-toggle="dropdown">
<span class="caret"></span>
<span class="sr-only">Toggle Dropdown</span>
</button>
<ul class="dropdown-menu" role="menu">
<li><a href="#">Action</li>
<li><a href="#">Another action</a></li>
<li><a href="#">Something else here</a></li>
<li class="divider"></li>
<li><a href="#">Separated link</a></li>
</ul>
</div>