diff --git a/app/views/attachments/update_file_dense.js.erb b/app/views/attachments/update_file_dense.js.erb
index 110d3fc7c..747024dec 100644
--- a/app/views/attachments/update_file_dense.js.erb
+++ b/app/views/attachments/update_file_dense.js.erb
@@ -1,5 +1,10 @@
+<% if @attachment.container_type == 'Course' %>
 $("#is_public_<%= @attachment.id %>").html("<%= escape_javascript(link_to (@attachment.is_public? ? "设为私有":"设为公开"), update_file_dense_attachments_path(:attachmentid=>@attachment.id,:newtype=>(@attachment.is_public? ? 0:1)),
                                                               :remote=>true,:class=>"postOptionLink",:method => :post) %>");
+<%else%>
+$("#is_public_<%= @attachment.id %>").html("<%= escape_javascript(link_to (@attachment.is_public? ? "公开":"私有"), update_file_dense_attachments_path(:attachmentid=>@attachment.id,:newtype=>(@attachment.is_public? ? 0:1)),
+                                                              :remote=>true,:class=>"f_l re_open",:method => :post) %>");
+<%end %>
 <%if @attachment.is_public? %>
     $("#image_private_<%= @attachment.id%>").html('')
 <%else%>