fade speed not working

fade speed not working


I just started using jQuery and am having trouble getting the fade
speed to work. It seems to always fade fast even if I set it to 'slow'
or '999999999'. I have reprod in IE, Firefox, and Chrome. I am using
jQuery v1.3.1 just downloaded today. Any ideas?
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://
www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<script src="js/jquery-1.3.1.js" type="text/javascript"></script>
<script type="text/javascript">
function fadeout(id) {
$('#' + id).fadeOut
('99999999999999999999999999999999999999999999');
}
</script>
</head>
<body>
<div>
<img id="testimg" src="error.jpg" onclick="javascript:fadeout
(this.id);" />
</div>
</body>
</html>