sfHover = function() {
	var sfEls = document.getElementById("nav").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);

function flipdisplay(strobj) {
	for(i=0;i,i<arguments.length;i++){
		try {
			var objflip=document.getElementById(arguments[i]);
			var strDisplay
			if(document.defaultView){strDisplay = document.defaultView.getComputedStyle(objflip,null).getPropertyValue("display")}
			else (strDisplay = objflip.currentStyle.display)
			if (strDisplay == "none"){objflip.style.display="block"}
			else {objflip.style.display="none"};
		}
		catch(e){}
	}
}