(function ($) {

    $.fn.maxHeight = function () {

        var max = 0;

        this.each(function () {
            max = Math.max(max, $(this).height());
        });

        return max;
    };
})(jQuery);



(function ($) {

    $.fn.makeSameHeight = function () {

        var max = this.maxHeight();
        
        $(this).height(max);
    };
})(jQuery);