(function ($) {
    $.fn.customFadeIn = function (speed, callback) {
        $(this).fadeIn(speed, function () {
            if (!$.support.opacity)
                $(this).get(0).style.removeAttribute('filter');
            if (callback != undefined)
                callback();
        });
    };
    $.fn.customFadeOut = function (speed, callback) {
        $(this).fadeOut(speed, function () {
            if (!$.support.opacity)
                $(this).get(0).style.removeAttribute('filter');
            if (callback != undefined)
                callback();
        });
    };
    $.fn.customFadeTo = function (speed, to, callback) {
        return this.animate({ opacity: to }, speed, function () {
            if (to == 1 && jQuery.browser.msie)
                this.style.removeAttribute('filter');
            if (jQuery.isFunction(callback))
                callback();
        });
    };
})(jQuery);