diff --git a/app/controllers/boards_controller.rb b/app/controllers/boards_controller.rb
index 2d1d0bba7..dc4ccbc67 100644
--- a/app/controllers/boards_controller.rb
+++ b/app/controllers/boards_controller.rb
@@ -30,13 +30,15 @@ class BoardsController < ApplicationController
   def index
     @boards = @project.boards.includes(:last_message => :author).all
     # show the board if there is only one
+    unless @project.project_type == 1
     if @boards.size == 1
       @board = @boards.first
       show
     end
+    end
     if @project.project_type == 1
-      render :layout => 'base_courses'
-      else
+     render :layout => 'base_courses'
+    else
      render :layout => false if request.xhr?
     end
   end
@@ -85,12 +87,10 @@ class BoardsController < ApplicationController
     end
   end
 
-  def create
+  def create    
     @board = @project.boards.build
     @board.safe_attributes = params[:board]
-     if @project.project_type == 1
-      render :layout => 'base_courses'
-    end
+    
     if @board.save
       flash[:notice] = l(:notice_successful_create)
       #Modified by young
diff --git a/app/views/bids/_homework_list.html.erb b/app/views/bids/_homework_list.html.erb
index 0a40e3d0e..ba6faa650 100644
--- a/app/views/bids/_homework_list.html.erb
+++ b/app/views/bids/_homework_list.html.erb
@@ -31,11 +31,13 @@
 
 					<tr>
 						<td colspan="2" width="580px" >
+					<% unless User.current.logged? && (!Member.where('user_id = ? and project_id = ?', User.current.id, @bid.courses.first.id).first.nil? && (Member.where('user_id = ? and project_id = ?', User.current.id, @bid.courses.first.id).first.roles&Role.where('id = ? or id = ? or id =?',5, 10, 7)).size >0) %>
 							<p class="font_description">
 								<% options = {:author => true, :deletable => attach_delete(homework)} %>
 								<%= render :partial => 'attachments/links',
 								:locals => {:attachments => homework.attachments, :options => options} %>
 							</p>
+					<% end %>		
 						</td>
 					</tr>
 				</table>
diff --git a/app/views/boards/index.html.erb b/app/views/boards/index.html.erb
index c7e4f5b54..614066613 100644
--- a/app/views/boards/index.html.erb
+++ b/app/views/boards/index.html.erb
@@ -1,5 +1,5 @@
 <div class="contextual">
-	<% if User.current.logged? %>
+	<% if User.current.logged? && User.current.member_of?(@project) %>
 		<%= link_to l(:label_board_new), new_project_board_path(@project), :class => 'icon icon-add' %>
 	<% end %>
 </div>
diff --git a/app/views/layouts/base_courses.html.erb b/app/views/layouts/base_courses.html.erb
index 145457a61..7bcb78ad5 100644
--- a/app/views/layouts/base_courses.html.erb
+++ b/app/views/layouts/base_courses.html.erb
@@ -210,20 +210,23 @@
 							<div class="tabs_new">
 								<ul>
 									<li>
-										<%= link_to l(:label_course_overview), project_path(@project), :class => link_class(:overview)%>
+										<%= link_to l(:label_course_overview), project_path(@project), :class => link_class(:overview) %>
 									</li>
 									<li>
 										<%= link_to l(:label_homework), {:controller => 'projects', :action => 'homework'}, :class => link_class('Task')%>
 									</li>
+									<li>
+										<%= link_to l(:label_course_board), { :controller => 'boards', :action => 'index', :project_id => @project}, :class => link_class(:boards) %> 							
+									</li>
 									<li>
 										<%= link_to l(:label_course_file), project_files_path(@project), :class => link_class(:files)%>
 									</li>
 									<li>
-										<%= link_to l(:label_course_news), {:controller => 'news', :action => 'index', :project_id => @project}, :class => link_class(:news)%>
+										<%= link_to l(:label_course_news), {:controller => 'news', :action => 'index', :project_id => @project}, :class => link_class(:news) %>
 									</li>
 									<li>
 										<%= link_to l(:label_course_feedback), project_feedback_path(@project), :class => link_class('Feedback')%>
-									</li>									
+									</li>								 	
 									<!-- <li><%= link_to(l(:label_course_repository), {:controller => 'repositories', :action => 'show', :id => @project, :repository_id => nil, :path => nil, :rev => nil, :course => 1 })%></li> -->
 									<% if User.current.logged? && (User.current.admin? || (!Member.where('user_id = ? and project_id = ?', User.current.id, @project.id).first.nil? && (Member.where('user_id = ? and project_id = ?', User.current.id, @project.id).first.roles&Role.where('id = ? or id = ?', 7, 9)).size >0))%>
 
diff --git a/config/locales/zh.yml b/config/locales/zh.yml
index 18f3127bb..5c529ee7f 100644
--- a/config/locales/zh.yml
+++ b/config/locales/zh.yml
@@ -623,6 +623,7 @@ zh:
   label_homework_commit: 提交作业 #huang
   label_homework_info: 作业情况  #huang
   label_course_news: 课程通知
+  label_course_board: 讨论区
   label_version: 版本
   label_version_new: 新建版本
   label_version_plural: 版本