a:hover funciona en los browsers nombrados aparte de IE
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>a:hover en Firefox, Opera y Safari</title>
<style type="text/css">
.menu a {
display:inline-block; width:140px; color:#00FF00; background-color:#444444; text-align:center; text-decoration:none; outline:none; float:left;
font-family:Arial, Helvetica, sans-serif; font-size:16px; line-height:22px; font-weight:bold; }
.menu a:hover {
background-color:#0000FF; color:#FFFF00; text-decoration:none; outline:none }
</style>
</head>
<body>
<div class="menu">
<a>si que funciona</a>
</div>
</body>
</html>
Usuarios: 
