$(document).ready
(
    function()
    {
        $('.bag').hover
        (
            function()
            {
                $('.bag').stop().animate
                (
                    { opacity:0.5 },
                    { queue: false, duration: 250 }
                );
                $(this).animate
                (
                    { opacity:1.0 },
                    { queue: false, duration: 250 }
                );
            },
            function()
            {
                $(this).animate
                (
                    { opacity:0.5 },
                    { queue: false, duration: 500 }
                )
            }
        );
});