function navlayers() { //v9.0
  var i,p,v,obj,args=navlayers.arguments;
  for (i=0; i<(args.length-2); i+=3) 
  with (document) if (getElementById && ((obj=getElementById(args[i]))!=null)) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
    obj.visibility=v; }
}

function navHover(id) {
	document.getElementById(id).className += ' hoverOn';
}
function navHoverOut(id) {
	document.getElementById(id).className = document.getElementById(id).className.replace('hoverOn', '');
}