diff --git a/app/controllers/homework_common_controller.rb b/app/controllers/homework_common_controller.rb
index 091e2b86b..e52b8434b 100644
--- a/app/controllers/homework_common_controller.rb
+++ b/app/controllers/homework_common_controller.rb
@@ -17,9 +17,11 @@ class HomeworkCommonController < ApplicationController
     @page = params[:page] ? params[:page].to_i + 1 : 0
     @is_teacher = User.current.logged? && (User.current.admin? || User.current.allowed_to?(:as_teacher,@course))
     if @is_teacher
-      @homeworks = @course.homework_commons.order("created_at desc").limit(10).offset(@page * 10)
+      @homeworks = @course.homework_commons.order("updated_at desc").limit(10).offset(@page * 10)
+      @homework_commons = @course.homework_commons.order("created_at desc").limit(10).offset(@page * 10)
     else
-      @homeworks = @course.homework_commons.where("publish_time <= '#{Date.today}'").order("created_at desc").limit(10).offset(@page * 10)
+      @homeworks = @course.homework_commons.where("publish_time <= '#{Date.today}'").order("updated_at desc").limit(10).offset(@page * 10)
+      @homework_commons = @course.homework_commons.where("publish_time <= '#{Date.today}'").order("created_at desc").limit(10).offset(@page * 10)
     end
     @is_student = User.current.logged? && (User.current.admin? || (User.current.member_of_course?(@course) && !@is_teacher))
     @is_new = params[:is_new]
diff --git a/app/views/homework_common/index.html.erb b/app/views/homework_common/index.html.erb
index ac4ac9853..6a3528e51 100644
--- a/app/views/homework_common/index.html.erb
+++ b/app/views/homework_common/index.html.erb
@@ -39,7 +39,21 @@
 
 <div class="homepageRight mt0 ml10">
   <div class="homepageRightBanner mb10">
-    <div class="NewsBannerName">作业</div>
+    <!--<div class="NewsBannerName">作业</div>-->
+    <div id="menu_r" class="NewsBannerName" style="margin-bottom: -10px;">
+      <ul class="menu_r b_w" style="padding-left: 0px; margin-top: -5px;">
+        <li>
+          <a href="javascript:void(0);" class="parent" style="font-size:16px; color:#4b4b4b; font-weight: normal; padding-left: 0px;">作业</a>
+          <ul>
+            <% @homework_commons.each_with_index do |homework_common,index |%>
+                <li class="pr10">
+                  <%= link_to "作业#{@homework_commons.count - index}：#{homework_common.name}",student_work_index_path(:homework => homework_common.id)%>
+                </li>
+            <% end%>
+          </ul>
+        </li>
+      </ul>
+    </div>
     <div id="search_div" class="fr mr10">
       <%= render :partial =>  'homework_search_form',:locals => {:course=>@course} %>
     </div>
diff --git a/public/stylesheets/public.css b/public/stylesheets/public.css
index 9d37dc1cb..e48e9fad2 100644
--- a/public/stylesheets/public.css
+++ b/public/stylesheets/public.css
@@ -225,7 +225,7 @@ a.c_green{ color:#28be6c;}
 .c_dblue{ color:#09658c;}
 .b_blue{background:#64bdd9;}
 .b_green{background:#28be6c;}
-.b_w{ background:#fff;}
+.b_w{ background:#fff !important;}
 
 /*add by Tim*/
 .fontGrey {color:#cecece;}