jq za tabove

(function ($) {

    $.mx_custom_tab_mod = $.mx_custom_tab_mod || {};

    $.mx_custom_tab_mod.init = function () {

        var template = $('#tmpl-add-custom-tab').html();

        $('.custom-box-holder').sortable({
            placeholder: 'mad-custom-tab-highlight',
            handle: ".handle-area"
        });

        ({
            init: function () {
                this.listeners();
            },
            listeners: function () {
                var base = this;

                $('#meta_custom_tabs').on('click', '.add-custom-tab', function (e) {
                    e.preventDefault();

                    var rString = base.randomString(5, 'abcdefghijklmnopqrstuvwxyz'),
                        html = template.replace(/__REPLACE_SSS__/gi, rString);

                    newTemplate = $(html).appendTo('.custom-box-holder').css({ display: "none" });

                    quicktags(rString);
                    QTags._buttonsInit();

                    newTemplate.slideDown(200);

                }).on('click', '.remove-custom-tab', function (e) {
                    e.preventDefault();
                    var $this = $(this),
                        $item = $this.parents('li');
                    $item.slideUp(200, function () { $item.remove(); });
                });
            },
            randomString: function (length, chars) {
                var result = '';
                for (var i = length; i > 0; --i) result += chars[Math.round(Math.random() * (chars.length - 1))];
                return result;
            }
        }).init();
    }

    $(function() {
        $.mx_custom_tab_mod.init();
    });

})(jQuery);