https://udprf.ru/sites/all/themes/udprf/js/paginator.js?swcj8p

1(function($) {
2    paginator = function () {
3        /**
4         * Private properties
5         */
6        var linkNext = null;
7        var linkPrev = null;
8
9        /**
10         * Private methods
11         */
12        var setLinks = function () {
13            linkPrev = $("ul.pagination li.pager-previous a").attr("href");
14            linkNext = $("ul.pagination li.pager-next a").attr("href");
15        };
16
17        var navigate = function (event) {
18            var href = null;
19            if (event.ctrlKey && event.keyCode == 37) href = linkPrev;
20            if (event.ctrlKey && event.keyCode == 39) href = linkNext;
21            if (href) document.location = href;
22        };
23
24        /**
25         * Public methods
26         */
27        this.__init = function () {
28            // Get next/prev hrefs
29            setLinks();
30
31            // Ctrl + arrow event handle
32            $(document).keydown( function(event) {
33                navigate(event);
34            });
35        }
36    };
37
38    $(document).ready(function(){
39        var pageNavigation = new paginator();
40        pageNavigation.__init();
41    });
42
43    /**
44     * Hide next and previous element
45     */
46    $(document).ready(function(){
47        $('ul.pagination').each(function () {
48            if ($(this).find('li:eq(1)').attr('class') == 'active') {
49                $(this).find('li:eq(0)').hide();
50            } else if ($(this).find('li:eq(-2)').attr('class') == 'active') {
51                $(this).find('li:eq(-1)').hide();
52            }
53        });
54
55    });
56})(jQuery);