jQuery.fn.fader = function(options) {
    if (!options.slideClass || options.slideClass == "") {
        var error = new Error();
        error.message = "No slide class has been supplied";
    }

    if (!options.slideDuration || !parseInt(options.slideDuration)) {
        options.slideDuration = 4000;
    }

    if (!options.fadeOutDuration || !parseInt(options.fadeOutDuration)) {
        options.fadeOutDuration = 4000;
    }


    if (!options.fadeInDuration || !parseInt(options.fadeInDuration)) {
        options.fadeInDuration = 4000;
    }

    return this.each(function() {
        $(options.slideClass, this).hide();
        $(options.slideClass + ":eq(0)", this).show();
        var currentIndex = 0;
        var obj = this;
        var t = setInterval(function() {
        $(options.slideClass + ":eq(" + currentIndex + ")", obj).fadeOut(options.fadeOutDuration, function() {
                currentIndex++;
                if (currentIndex > $(options.slideClass, obj).size() - 1)
                    currentIndex = 0;
                $(options.slideClass + ":eq(" + currentIndex + ")", obj).fadeIn(options.fadeInDuration);
            });
        }, options.slideDuration);
    });
};