window.addEvent('domready', function() {
	var navs = $$('#nav li a');
	navs.setOpacity(.01);
	navs.each(function(nav, i) {
		var navFx = new Fx.Tween(nav, {property: 'opacity', duration: 200});
		nav.addEvents({
			'mouseenter': function() {
				navs.each(function(navi, j) {
					var naviFx = new Fx.Tween(navi, {property: 'opacity', duration: 200});
					if (i != j) {
						naviFx.start(0.1);
					}
				});
				navFx.start(0.3);
			},
			'mouseleave': function() {
				navFx.start(0.01);
			}
		});
	});
});