diff --git a/assets/javascripts/app.js b/assets/javascripts/app.js
index c327560..2cab8e2 100644
--- a/assets/javascripts/app.js
+++ b/assets/javascripts/app.js
@@ -56,25 +56,30 @@
         window.temp_scrollY = document.documentElement.scrollTop;
         window.temp_scrollX = document.documentElement.scrollLeft;
     }
+    if ($('.header-banner').html().trim() == "") {
+      $('.downIcon').css('display','none')
+    }
     // if (location.href.search('editmode') == -1 && document.getElementsByClassName('asideright').length != 0) {
-    if ( $('.header-banner').length != 0 ) {
+    if ( $('.header-banner').length != 0) {
       $('.layout-header').css('height', '');
       var scrollTop = $(window).scrollTop();
-      if (!window.has_topest_banner){
-        $('.kenjohn').removeClass('navRel').addClass('navFixed'); /* 正常選單固定效果 */
-      }else if (scrollTop>5) {          /* 要滑動到選單的距離 */
+      var scrollBottom = $('html').height() - $(window).height() - $('.kenjohn').height();
+      if (scrollTop>5 && scrollBottom>0)  {          /* 要滑動到選單的距離 */
         if (parseInt($('.layout-content').css('margin-top'))==0 && $('.layout-content.topcontent').length != 0 && $('.layout-content.topcontent').offset().top<400){
           $('.layout-content').css('margin-top',$('.kenjohn').height()-$('#orbit-bar').height());
         }
         $('.kenjohn').addClass('navFixed').removeClass('navRel');   /* 幫選單加上固定效果 */
       } else {
-        $('.kenjohn').removeClass('navRel').removeClass('navFixed'); /* 移除選單固定效果 */
+        if ($('.header-banner').html().trim() == "") {
+          $('.kenjohn').removeClass('navFixed').addClass('navRel');
+        }else{
+          $('.kenjohn').removeClass('navRel').removeClass('navFixed'); /* 移除選單固定效果 */
+        }
         $('.layout-content').css('margin-top','');
       }
     }
     var navFixed = $('.kenjohn.navFixed');
     window.top_barrier_height = (navFixed.length ? navFixed.height() : 0) + $('#orbit-bar').height();
-    fix_first_element();
   }
   // 初始函數: 把所有的程式碼都包在init裡面，方便在之後的jQuery ready 函數裡一次呼叫
   function init() {
diff --git a/assets/stylesheets/template/modules/ad_banner.scss b/assets/stylesheets/template/modules/ad_banner.scss
index cc56cfa..b96ec1b 100644
--- a/assets/stylesheets/template/modules/ad_banner.scss
+++ b/assets/stylesheets/template/modules/ad_banner.scss
@@ -510,21 +510,24 @@ ul.button-mid{
             height: 1290px;
           }
           @media(min-width:1601px)and (max-width:1920px){
-            height: 895px;
+            height: 1040px;
           }
-          @media screen and (min-width:1441px) and (max-width:1600px){
-                height: 725px;
+          @media screen and (min-width:1540px) and (max-width:1600px){
+                height: 860px;
+          }
+          @media screen and (min-width:1440px) and (max-width:1540px){
+                height: 700px;
           }
           @media screen and (min-width:1440px) and (max-width:1441px){
-                height: 764px;
+                height: 860px;
           }
           @media screen and (min-width:1281px) and (max-width:1439px){
-                height: 595px;
+                height: 730px;
           }
           @media screen and (min-width:1025px) and (max-width:1280px){
-                height: 545px;
+                height: 680px;
           }
-          @media (max-width:1280px){
+          @media (max-width:1279px){
                 width:100%;
                 height: auto;
                 max-width: fit-content;