火狐浏览器下课程作业的回复无法自动刷新

app/controllers/words_controller.rb

@@ -272,6 +272,7 @@ class WordsController < ApplicationController
             format.js{
               @user_activity_id = params[:user_activity_id]
               @is_in_course = params[:is_in_course]
+              @course_activity = params[:course_activity]
               @homework_common_id = params[:homework_common_id]
             }
           end

app/views/users/_course_homework.html.erb

@@ -167,6 +167,7 @@
         <div nhname='new_message_<%= user_activity_id%>' style="display:none;">
           <%= form_for('new_form',:url =>  {:controller => 'words', :action => 'leave_homework_message', :id => activity.id},:method => "post", :remote => true) do |f|%>
               <%= hidden_field_tag 'user_activity_id',params[:user_activity_id],:value =>user_activity_id %>
+              <%= hidden_field_tag 'course_activity',params[:course_activity],:value =>course_activity %>
               <textarea placeholder="有问题或有建议，请直接给我留言吧！" style="display: none" nhname='new_message_textarea_<%= user_activity_id%>' name="homework_message"></textarea>
               <div nhname='toolbar_container_<%= user_activity_id%>' style="float:left;padding-top:3px; margin-left: 5px;"></div>
               <a id="new_message_submit_btn_<%= user_activity_id%>" href="javascript:void(0)" class="blue_n_btn fr" style="display:none;margin-top:6px;">发送</a>

app/views/words/leave_homework_message.js.erb

@@ -1,5 +1,5 @@
 <% if @user_activity_id %>
-    $("#user_activity_<%= @user_activity_id%>").replaceWith("<%= escape_javascript(render :partial => 'users/course_homework', :locals => {:activity => @homework_common,:user_activity_id =>@user_activity_id}) %>");
+    $("#user_activity_<%= @user_activity_id%>").replaceWith("<%= escape_javascript(render :partial => 'users/course_homework', :locals => {:activity => @homework_common,:user_activity_id =>@user_activity_id,:course_activity => @course_activity}) %>");
     init_activity_KindEditor_data(<%= @user_activity_id%>,"","87%");
 <% elsif @homework_common_id && @is_in_course %>
     $("#homework_common_<%= @homework_common_id %>").replaceWith("<%= escape_javascript(render :partial => 'users/user_homework_detail', :locals => {:homework_common => @homework_common,:is_in_course => @is_in_course}) %>");