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<!DOCTYPE HTML>
<html>
<head>
<title></title>
</head>
<body>
<script src="http://code.jquery.com/jquery-latest.js"></script>
<div class="ui-dialog ui-widget ui-widget-content ui-corner-all ui-front 36 ui-draggable ui-resizable"></div>
<script type="text/javascript">
alert($("div").attr("class").replace(/\D+/g, ""));
</script>
</body>
</html>