window.addEvent("domready", function(){

    var opacity = $$('.opacity');

    opacity.each(function(element){
            var fx = new Fx.Styles(element, {
                    duration: 500,
                    wait: false
            });

            element.addEvent('mouseenter', function(){
                    fx.start({
                            'opacity': '0.6'
                    })
            });
            element.addEvent('mouseleave', function(){
                    fx.start({
                            'opacity': '1.0'
                    })
            })
    });

    Shadowbox.init();

});