non riesco ad usare le immagini per il punto elenco, dove sbaglio?

codice:
<!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>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Documento senza titolo</title>
<style type="text/css">
<!--
.Stile1 {
	font-size: 14px;
	list-style-position: outset;
	list-style-image: url(img/arrow.gif);
}
-->
</style>
</head>

<body>
<ul>[*]abc[*]def[*]ghi[/list]
</body>
</html>