gracias
el efecto
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>efecto</title>
<script type='text/javascript' src='http://code.jquery.com/jquery-1.5.2.js'></script>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.9/jquery-ui.js"></script>
<link rel="stylesheet" type="text/css" href="/css/normalize.css">
<link rel="stylesheet" type="text/css" href="/css/result-light.css">
<style type='text/css'>
#sortable { list-style-type: none; margin: 0; padding: 0; width: 60%; }
#sortable li { margin: 0 3px 3px 3px; padding: 0.4em; padding-left: 1.5em; font-size: 1.4em; height: 18px; }
#sortable li span { position: absolute; margin-left: -1.3em; }
</style>
<script type='text/javascript'>
//<![CDATA[
$(window).load(function(){
$(function() {
$( "#sortable" ).sortable({stop:function(event,ui){
alert($( "#sortable" ).sortable('serialize'));
}});
$( "#sortable" ).disableSelection();
});
});
//]]>
</script>
</head>
<body>
<div class="demo">
<ul id="sortable">
<li id='li_1' class="ui-state-default"><span class="ui-icon ui-icon-arrowthick-2-n-s"></span>Item 1</li>
<li id='li_2' class="ui-state-default"><span class="ui-icon ui-icon-arrowthick-2-n-s"></span>Item 2</li>
<li id='li_3' class="ui-state-default"><span class="ui-icon ui-icon-arrowthick-2-n-s"></span>Item 3</li>
<li id='li_4' class="ui-state-default"><span class="ui-icon ui-icon-arrowthick-2-n-s"></span>Item 4</li>
<li id='li_5' class="ui-state-default"><span class="ui-icon ui-icon-arrowthick-2-n-s"></span>Item 5</li>
<li id='li_6' class="ui-state-default"><span class="ui-icon ui-icon-arrowthick-2-n-s"></span>Item 6</li>
<li id='li_7' class="ui-state-default"><span class="ui-icon ui-icon-arrowthick-2-n-s"></span>Item 7</li>
</ul>
</div><!-- End demo -->
</div>
</body>
</html>