Max Grim

<option class="sort" data-sort="" value="">По умолчанию</option>

$(document).ready(function() {
                    $(document).on('change', '#mse2_sort', function() {
                        var selected = $(this).find('option:selected');
                        var sort = selected.data('sort');
                        if(sort!=""){
                            sort += mse2Config.method_delimeter + selected.val();
                        }else{
                            sort = '';
                        }
                        mse2Config.sort =  sort;
                        mSearch2.submit();
                    });

});