function menuFix() {
	var sfEls = document.getElementById("nav").getElementsByTagName("LI");
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmouseover=function() {
		this.className+=(this.className.length>0? " ": "") + "sfhover";
		}
		// event added to keep menu items from disappearing
		sfEls[i].onMouseDown=function() {
		this.className+=(this.className.length>0? " ": "") + "sfhover";
		}
		// event added to keep menu items from disappearing
		sfEls[i].onMouseUp=function() {
		this.className+=(this.className.length>0? " ": "") + "sfhover";
		}
		sfEls[i].onmouseout=function() {
		this.className=this.className.replace(new RegExp("( ?|^)sfhover\\b"), "");
		}
	}
}
// general popup window function
function open_popup(url,w,h,statusbar) {
	if(statusbar==null) statusbar=0;
	if(w==null) w=400;
	if(h==null) h=200;
	x = screen.width/2 - w/2;
	y = screen.height/2 - h/2;
	pWindow = window.open(url,"popup",'toolbar=0,location=0,directories=0,status='+statusbar+',menubar=0,width='+w+',height='+h+',scrollbars');	
	pWindow.moveTo(x,y);
	pWindow.focus();
}