<th><input type="checkbox" id="ckSelectAll"></th>     

<td><input type="checkbox" name="uid" value="${user.id}"></td>

<script type="text/javascript" src="<%=basePath%>/js/jquery.min.js"></script>
<script type="text/javascript">
   $(function(){

       $("#ckSelectAll").click(function(){
           
           $("input[name=uid][type=checkbox]").each(function(){
                          
                  $(this).prop("checked",$("#ckSelectAll").prop("checked"));
                  
               });  
       });       
 });
  
</script>