[jQuery] Problems with sortable()

[René]

Can someone tell me why serialize returns nothing?


<ul id="sort">
<li id="1">123</li>
<li id="2">abc </li>
<li id="3">456</li>
<li id="4">xyz</li>
</ul>

<script type="text/javascript" src="http://ajax.googleapis.com/ajax/
libs/jquery/1.2.6/jquery.min.js"></script>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/
libs/jqueryui/1.5.2/jquery-ui.js"></script>

<script type="text/javascript">

$('#sort').sortable({
    cursor:     'move',
    axis:       'y',
    update: function() {
        sorted = $(this).sortable("serialize", 'id');
        alert (sorted);
    }
});

</script>