#home, #home:visited {
	background-image:url(../_graphics/navBtn_home.gif);
}
#about, #about:visited {
	background-image:url(../_graphics/navBtn_about.gif);
}
#Principle, #Principle:visited {
	background-image:url(../_graphics/navBtn_principle.gif);
}
#market, #market:visited {
	background-image:url(../_graphics/navBtn_market.gif);
}
#publications, #publications:visited {
	background-image:url(../_graphics/navBtn_publications_on.gif);
}
#news, #news:visited {
	background-image:url(../_graphics/navBtn_news.gif);
}



.rollover span.alt {
	display:none;
	padding-left: 0px;
	margin-left: 0px;
}
.rollover img {
	border:none;
	padding-left: 0px;
	margin-left: 0px;
}
:root .rollover img {
	display:block;
	padding-left: 0px;
	margin-left: 0px;
}

.rollover, .rollover:visited {
	background-color:transparent !important; /* needed for Opera5/6 */
	background-repeat:no-repeat;
	background-position:0 0;
	padding-left: 0px;
	margin-left: 0px;
}
.rollover:hover, .rollover:focus, .rollover:active, .rollover.MMO, .rollover.MMO:visited {
	background-position:0 -30px;
	padding-left: 0px;
	margin-left: 0px;
}