Before using AMF, you’ve to add css / javascript for JQuery Mobile

<link rel="stylesheet" href="http://code.jquery.com/mobile/1.0b2/jquery.mobile-1.0b2.min.css" />
<script type="text/javascript" src="http://code.jquery.com/jquery-1.6.2.min.js"></script>
<script type="text/javascript" src="http://code.jquery.com/mobile/1.0b2/jquery.mobile-1.0b2.min.js"></script>