Here's a complete working example based on your testing. Compare it to what you have currently to figure out where you are going wrong.
<html>
<head>
<title>Untitled Document</title>
<script type="text/javascript" src="http://code.jquery.com/jquery-latest.js"></script>
<script type="text/javascript">
$(document).ready( function() {
$('#deletesuccess').delay(1000).fadeOut();
});
</script>
</head>
<body>
<div id=deletesuccess > hiiiiiiiiiii </div>
</body>
</html>
与恶龙缠斗过久,自身亦成为恶龙；凝视深渊过久,深渊将回以凝视…
