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