(function ($) {
    //光亮透明度函数 例：jQuery(".becool_light").becoolLight();
    $.fn.lighter = function () {
        this.each(function (e) {
            var light = parseFloat($(this).attr("light")) || 0.5;
            var a = (1.0 - Math.abs(light));

            if (light > 0)
                $(this).css("background", "#ffffff");
            else
                $(this).css("background", "#000000");

            $(this).find("img").hover(function () {
                $(this).fadeTo(800, a);

            }, function () {
                $(this).fadeTo(500, 1.0);
            });
        });
    };
})(jQuery);

$(function () {
    $(".becool_light").lighter();
});