<script>

        $("#zSalesChange").on('change', function () {
            var cat = $(this).val();
            console.log("m33",cat);
            setCookie('select', cat);

        });
        var sel = getCookie('select');
        if (sel) {
            $('#zSalesChange').val(sel).trigger('change');
        }

        function setCookie(key, value) {
            var expires = new Date();
            expires.setTime(expires.getTime() + (1 * 24 * 60 * 60 * 1000));
            document.cookie = key + '=' + value + ';expires=' + expires.toUTCString();
        }

        function getCookie(key) {
            var key = document.cookie.match('(^|;) ?' + key + '=([^;]*)(;|$)');
            return key ? key[2] : null;
        }
    </script>