datepicker 사용자 정의 버튼 추가하기

$( "#startDt, #endDt" ).datepicker({

                 dateFormat: 'yy-mm-dd'

               , changeMonth: true

               , changeYear: true

               , nextText: '다음 달'

               , prevText: '이전 달'

               , showButtonPanel: true

               , beforeShow: function (input) {

                     setTimeout(function() {

                            var nextYearBtn = $("<button>이후 년</button>");

                                 nextYearBtn.unbind("click").bind("click", function() {

                             $.datepicker._adjustDate($(input), +1, 'Y');

                                 });

                                 var preYearBtn = $("<button>이전 년</button>");

                                 preYearBtn.unbind("click").bind("click", function() {

                             $.datepicker._adjustDate($(input), -1, 'Y');

                                 });

                                

                        $(".ui-datepicker-buttonpane")

                           .html('')

                           .append(nextYearBtn)

                           .append(preYearBtn);

                       }, 1);

               }

                    , onChangeMonthYear:function(y, m, i){                               

                           setTimeout(function() {

                                 var nextYearBtn = $("<button>이후 년</button>");

                                 nextYearBtn.unbind("click").bind("click", function() {

                             $.datepicker._adjustDate($(i.input), +1, 'Y');

                                 });

                                

                                 var preYearBtn = $("<button>이전 년</button>");

                                 preYearBtn.unbind("click").bind("click", function() {

                             $.datepicker._adjustDate($(i.input), -1, 'Y');

                                 });

                                

                        $(".ui-datepicker-buttonpane")

                           .html('')

                           .append(nextYearBtn)

                           .append(preYearBtn);

                       }, 1);

                 }

             });//.val(getFormatDate(new Date())) defaultDate : $(this).val()