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=utf-8" />
<title>Documento senza titolo</title>

<style type="text/css">

div:hover {
	background-image: url(grafica2.png);
}
div {
	background-image: url(grafica.png);
	width: 109px;
	height: 38px;
}
</style>
</head>

<body>
<div>&amp;nbsp;</div>
</body>
</html