ul#nav{float: left;width: 100%;list-style: none;
     margin: 0;padding: 0;border-bottom: 0px solid #D7D7D7; 
	 }

ul#nav li{float: left;margin: 0 0.2em 0;padding: 0}

ul#nav a{float: left;padding: 0 0 0 0.4em;
    background: url(tab.png) no-repeat top left;
    text-decoration: none;color: #222}

ul#nav span{float: left;padding: 0.4em 1em 0.4em 0.6em;
    background: url(tab.png) no-repeat top right;cursor: pointer}

ul#nav li#active a,ul#nav a:hover{
    background: url(tab2.png) no-repeat top left;
	border-bottom:1px solid white;
	}

ul#nav li#active span,ul#nav a:hover span{
    background: url(tab2.png) no-repeat top right;color: #184D8A}

#sfondo{
background-image:url(linea.jpg);
background-repeat:repeat-x;
background-position:bottom;
height:50px;
}