window.addEvent('domready', function(){
        $$($('nav').getElements('.parent').addEvent('click', function() {
            this.fireEvent('open');
        }).getNext('ul > li')).set('reveal', {
            transitionOpacity: false,
            link: 'cancel'
        }).hide();

        $$('#nav .menu-item a', '#nav .parent').addEvents({
            'verde': function() {this.getParents('li.menu-item').fireEvent('verde');},
            'bege': function() {this.getParents('li.menu-item').fireEvent('bege');},
            'open': function() {
                var todos = $('nav').getElements('ul.submenu');
                var filho = this.getNext('ul.submenu');
                var pais = $$(this.getParents('ul.submenu'));
                var manter = $$([pais, filho].flatten());

                $$($('nav').getElements('a.active').fireEvent('bege').getParents('li.menu-item')).fireEvent('bege');
                
                todos.filter(function (el) {
                    var flg = true;
                    manter.each(function (m) {
                        if (m == el) {
                            flg = false;
                            manter.erase(m);
                        }
                    });
                    return flg && el.isVisible();
                }).dissolve();

                pais.reveal();

                if (filho)
                    filho.isVisible() ? filho.dissolve() : filho.reveal();
                
                this.fireEvent('verde');
            }
        });
        
        $$('#nav .menu-item a', '#nav .parent').addEvents({
            'verde': function() {
                if (!this.hasClass('verde'))
                    this.morph('.verde').swapClass('bege', 'verde');
            },
            'bege': function() {
                if (!this.hasClass('bege'))
                    this.morph('.bege').swapClass('verde', 'bege');
            },
            'mouseover': function() {this.fireEvent('verde');},
            'mouseout': function() {this.fireEvent('bege');}
        });
        
   
        $('nav').getElements('li .active').fireEvent('open');
    
});