function u(id, img){
	document.getElementById(id).src = 'images/'+img;
}


function h(section, state){
	if (section == 'about-us'){
		document.getElementById('navaboutus').style.display='block';
	} else {
		if (state == 'over') document.getElementById('navaboutus').style.display='none';
	}
	u('header', 'menubar-'+section+'.png');
}
function i(){document.getElementById('navaboutus').style.display='none';}
function popwin(winurl){
	window.open(winurl,'','width=687,height=575');
}



sfHover = function() {
	var sfEls = document.getElementById("header").getElementsByTagName("LI");
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmouseover=function() {
			this.className+=" sfhover";
		}
		sfEls[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
		}
	}
}
if (window.attachEvent) window.attachEvent("onload", sfHover);