diff --git a/app/views/admin/ad_images/_jplayer.html.erb b/app/views/admin/ad_images/_jplayer.html.erb
index a5716b4..3a7e797 100644
--- a/app/views/admin/ad_images/_jplayer.html.erb
+++ b/app/views/admin/ad_images/_jplayer.html.erb
@@ -179,7 +179,7 @@
   function jplayer_center_video_front(ele){
     $(ele).css('margin-left',($(ele).parent().width()-$(ele).width())/2);
     if($(ele).parents('.w-ba-banner').length>0){
-      $(ele).css('margin-top',($(ele).height()-$(ele).parents('.w-ba-banner').eq(-1).height())/2);
+      $(ele).css('margin-top',($(ele).parents('.w-ba-banner').eq(-1).height()-$(ele).height())/2);
     }
     $(ele).css('transform','unset');
   }