diff --git a/app/views/admin/ad_images/_jplayer.html.erb b/app/views/admin/ad_images/_jplayer.html.erb
index 3a7e797..cb86575 100644
--- a/app/views/admin/ad_images/_jplayer.html.erb
+++ b/app/views/admin/ad_images/_jplayer.html.erb
@@ -177,9 +177,9 @@
     <% end %>
   }
   function jplayer_center_video_front(ele){
-    $(ele).css('margin-left',($(ele).parent().width()-$(ele).width())/2);
+    $(ele).css('margin-left',-Math.abs($(ele).parent().width()-$(ele).width())/2);
     if($(ele).parents('.w-ba-banner').length>0){
-      $(ele).css('margin-top',($(ele).parents('.w-ba-banner').eq(-1).height()-$(ele).height())/2);
+      $(ele).css('margin-top',-Math.abs($(ele).parents('.w-ba-banner').eq(-1).height()-$(ele).height())/2);
     }
     $(ele).css('transform','unset');
   }