function showHideLayers() { //v9.0
  var i,p,v,obj,args=showHideLayers.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;
  }
}