#nav_main a#portada {width: 89px;}
#nav_main a#who {width: 114px;}
#nav_main a#centres {width: 141px;}
#nav_main a#professionals {width: 141px;}
#nav_main a#investigacio {width: 112px;}
#nav_main a#visita {width: 97px;}
#nav_main a#consells {width: 137px;}
#nav_main a#contact {width: 91px;}
	#nav_main span {
		background: url("img/nav_main_es.jpg") no-repeat scroll 0 0 transparent;
	}

	#nav_main a#portada span {background-position: 0 0;}
	#nav_main a#who span {background-position: -95px 0;}
	#nav_main a#centres span {background-position: -208px 0;}
	#nav_main a#professionals span {background-position: -348px 0;}
	#nav_main a#investigacio span {background-position: -488px 0;}
	#nav_main a#visita span {background-position: -599px 0;}
	#nav_main a#consells span {background-position: -695px 0;}
	#nav_main a#contact span {background-position: -831px 0;}

	#nav_main a#portada:hover span,#nav_main a#portada:focus span {background-position: 0 -51px;}
	#nav_main a#who:hover span,#nav_main a#who:focus span {background-position: -95px -51px;}
	#nav_main a#centres:hover span,#nav_main a#centres:focus span {background-position: -208px -51px;}
	#nav_main a#professionals:hover span,#nav_main a#professionals:focus span {background-position: -348px -51px;}
	#nav_main a#investigacio:hover span,#nav_main a#investigacio:focus span {background-position: -488px -51px;}
	#nav_main a#visita:hover span,#nav_main a#visita:focus span {background-position: -599px -51px;}
	#nav_main a#consells:hover span,#nav_main a#consells:focus span {background-position: -695px -51px;}
	#nav_main a#contact:hover span,#nav_main a#contact:focus span {background-position: -831px -51px;}

	#nav_main a#portada:active span,#nav_main .current a#portada span {background-position: 0 -102px;}
	#nav_main a#who:active span,#nav_main .current a#who span {background-position: -95px -102px;}
	#nav_main a#centres:active span,#nav_main .current a#centres span {background-position: -208px -102px;}
	#nav_main a#professionals:active span,#nav_main .current a#professionals span {background-position: -348px -102px;}
	#nav_main a#investigacio:active span,#nav_main .current a#investigacio span {background-position: -488px -102px;}
	#nav_main a#visita:active span,#nav_main .current a#visita span {background-position: -599px -102px;}
	#nav_main a#consells:active span,#nav_main .current a#consells span {background-position: -695px -102px;}
	#nav_main a#contact:active span,#nav_main .current a#contact span {background-position: -831px -102px;}

	#nav_main li:hover ul,
		#nav_main li.sfHover ul {
			left: 348px;
			top: 10.10em;
			z-index: 1;
		}