/* main structure */ 
body {
margin: 0;
padding: 0;
background: url(images/bg_petri.gif) repeat-x;
}

a				{ color:#666666; text-decoration:none; }
a:hover			{ color:#ff0000; }

a.Home			{ color:#FFFFFF; text-decoration:none; }
a.Home:hover	{ color:#ff0000; }

a.Gruppo		{ color:#000000; text-decoration:none; }