window.addEvent('domready', function() {
    new Rokmoomenu($E('ul.nav'), {
	    bgiframe: false,
	    delay: 500,
	    animate: {
    		props: ['opacity', 'width', 'height'],
		    opts: {
    			duration:400,
	   			fps: 100,
			    transition: Fx.Transitions.Cubic.easeOut
		    }
	    }
    });
});