data-autodividers help

data-autodividers help

I'm using 1.2.0 and am not able to get the autodividers to group my data correctly. Instead of alpha dividers for all A, B, C, etc., each item in my listview has a divider.
 
My code for displaying dynamic data in last name, first name order:
  <tr id="row<%=(i+1)%>" >
  <ul data-role="listview" data-inset="true" data-autodividers="true"> 
   <li><a href="/members/mobile-member.asp?member=<%=aMembers(0,i)%>"><%=aMembers(2,i)%>,&nbsp;
    <%=aMembers(1,i)%></a></li><!-- last name, fist name -->
   </ul>
 </tr>




 
My html --
 
<link rel="stylesheet" href=" http://code.jquery.com/mobile/1.2.0-alpha.1/jquery.mobile-1.2.0-alpha.1.min.css" />
<script src="http://code.jquery.com/jquery-1.7.1.min.js"></script>
<script src="/js/jquery.mobile-1.2.0-alpha.1.min.js"></script>
</head>
<body>