/* IMAGE REPLACEMENTS */
.ir {
	height: 0; 
	overflow: hidden;
	display: block;
}

.nav dt {	position: absolute; left: -200em; }
.nav dd{ margin: 0;}

/* MAIN NAVIGATION */	

#mainnav a.ir
{
	background:url(/!includes/!images/int/ahc_sara_int_nav_static_2010.gif) no-repeat;
	position:absolute;
	padding-top:22px;
}
	#about a.ir{background-position:0 0; width:140px;top:0px;}
	#visit a.ir{background-position:0 -22px; width:140px;top:22px;}
	/*#research a.ir{background-position:0 -44px; width:140px;top:44px;}*/
	#news a.ir{background-position:0 -44px; width:140px;top:44px;}
	#friend a.ir{background-position:0 -66px; width:140px;top:66px;}
	#home a.ir{background-position:0 -88px; width:140px;top:88px; padding-top:30px;}
	#ark-ives a.ir{background-position:0 -110px; width:140px;top:110px; padding-top:20px;}
	#carat a.ir{background-position:0 -150px; width:110px;top:150px; padding-top:20px;}

#mainnav dd.IEhover a.ir, #mainnav dd:hover a.ir,
#mainnav a.ir:focus, #mainnav a.ir:hover, #mainnav a.ir:active { background: transparent none; }