var menu = {
    current: false,
    toggle: function(o, e) {
        if (!compono.hasClassName("menu-openup", o)) {
            compono.appendClassName("menu-openup", o);
            if (!this.current) this.current = o;
            compono.Event.add("mouseout", this.blur, o);
        }
    },
    blur: function(e) {
        compono.removeClassName("menu-openup", menu.current);
        compono.Event.remove("mouseout", this.blur, menu.current);
    }
}