diff --git a/app/controllers/users_controller.rb b/app/controllers/users_controller.rb
index ac7ee616f..900af0e77 100644
--- a/app/controllers/users_controller.rb
+++ b/app/controllers/users_controller.rb
@@ -352,7 +352,7 @@ class UsersController < ApplicationController
       homework = HomeworkCommon.new
       homework.name = params[:homework_common][:name]
       homework.description = params[:homework_common][:description]
-      homework.end_time = params[:homework_common][:end_time]
+      homework.end_time = params[:homework_common][:end_time] || Time.now
       homework.publish_time = Time.now
       homework.homework_type = 1
       homework.late_penalty = 2
diff --git a/app/helpers/poll_helper.rb b/app/helpers/poll_helper.rb
index 170e1b92c..84e12f3b1 100644
--- a/app/helpers/poll_helper.rb
+++ b/app/helpers/poll_helper.rb
@@ -37,7 +37,17 @@ module PollHelper
       pv.vote_text
     end
   end
-  
+
+  #判断用户是否已经提交了问卷
+  def has_commit_poll?(poll_id,user_id)
+    pu = PollUser.find_by_poll_id_and_user_id(poll_id,user_id)
+    if pu.nil?
+      false
+    else
+      true
+    end
+  end
+
   #统计答题百分比，统计结果保留两位小数
   def statistics_result_percentage(e, t)
     e = e.to_f
diff --git a/app/views/courses/new.html.erb b/app/views/courses/new.html.erb
index 75979d9f3..8c7a41ddc 100644
--- a/app/views/courses/new.html.erb
+++ b/app/views/courses/new.html.erb
@@ -50,7 +50,7 @@
       </li>
       <li class=" ml90" >
         <a href="javascript:void(0)" class="blue_btn fl c_white" onclick="submit_new_course();" >提交</a>
-        <a href="http://<%= Setting.host_course%>" target="_blank" class="blue_btn grey_btn fl c_white">取消</a>
+        <%= link_to "取消",user_activities_path(User.current.id),:class => "blue_btn grey_btn fl c_white"%>
         <div class="cl"></div>
       </li>
     <% end%>
diff --git a/app/views/layouts/_logined_header.html.erb b/app/views/layouts/_logined_header.html.erb
index 70de9fd0b..8dd0bd2bb 100644
--- a/app/views/layouts/_logined_header.html.erb
+++ b/app/views/layouts/_logined_header.html.erb
@@ -19,7 +19,7 @@
   </div>
   <script>
       <% type = type%>
-      $(document).ready(function (){
+      $(function (){
           if('<%= type %>' != null && '<%= type %>' == 'courses' ){
               $('input:radio[value="courses"]').attr('checked','checked');
           }
@@ -30,13 +30,22 @@
               $('input:radio[value="users"]').attr('checked','checked');
           }
       });
+
+      $(function(){
+          $("#navHomepageSearchInput").keypress(function(e){
+              if (e.keyCode == '13') {
+                  $('#type').val($('input[type=radio]:checked').val());
+                  $(this).parent().submit();
+              }
+          })
+      });
   </script>
   <div class="fl" id="navHomepageSearch">
     <!--<form class="navHomepageSearchBox">-->
     <% name = name%>
 
     <%= form_tag({controller: :welcome, action: :search },:class=>'navHomepageSearchBox', method: :get) do %>
-      <input type="text" name="q" value="<%= name.nil? ? "" : name%>" class="navHomepageSearchInput" placeholder="请输入关键词进行搜索" />
+      <input type="text" name="q" value="<%= name.nil? ? "" : name%>" id="navHomepageSearchInput" class="navHomepageSearchInput" placeholder="请输入关键词进行搜索"/>
         <input type="hidden" name="search_type" id="type" value=""/>
         <a href="javascript:void(0);" class="homepageSearchIcon" onclick="$('#type').val($('input[type=radio]:checked').val());$(this).parent().submit();"></a>
      <% end %>
diff --git a/app/views/layouts/_unlogin_header.html.erb b/app/views/layouts/_unlogin_header.html.erb
index d11fdbfb2..d6c6fbc51 100644
--- a/app/views/layouts/_unlogin_header.html.erb
+++ b/app/views/layouts/_unlogin_header.html.erb
@@ -19,7 +19,7 @@
          $(doc).parent().submit();
      }
      <% type = type%>
-     $(document).ready(function (){
+     $(function (){
          if('<%= type %>' != null && '<%= type %>' == 'courses' ){
              $('input:radio[value="courses"]').attr('checked','checked');
          }
@@ -30,13 +30,22 @@
              $('input:radio[value="users"]').attr('checked','checked');
          }
      });
+
+     $(function(){
+         $("#navHomepageSearchInput").keypress(function(e){
+             if (e.keyCode == '13') {
+                 $('#type').val($('input[type=radio]:checked').val());
+                 $(this).parent().submit();
+             }
+         })
+     });
  </script>
   <div class="fl" id="navHomepageSearch">
     <!--<form class="navHomepageSearchBox">-->
     <% name = name%>
 
     <%= form_tag({controller: :welcome, action: :search },:class=>'navHomepageSearchBox', method: :get) do %>
-      <input type="text" name="q" value="<%= name.nil? ? "" : name%>" class="navHomepageSearchInput" placeholder="请输入关键词进行搜索" />
+      <input type="text" name="q" value="<%= name.nil? ? "" : name%>" id="navHomepageSearchInput"  class="navHomepageSearchInput" placeholder="请输入关键词进行搜索" />
       <input type="hidden" name="search_type" id="type" value=""/>
       <a href="javascript:void(0);" class="homepageSearchIcon" onclick="$('#type').val($('input[type=radio]:checked').val());$(this).parent().submit();"></a>
     <% end %>
diff --git a/app/views/layouts/new_base_user.html.erb b/app/views/layouts/new_base_user.html.erb
index 7b7f4a536..6a2b052e9 100644
--- a/app/views/layouts/new_base_user.html.erb
+++ b/app/views/layouts/new_base_user.html.erb
@@ -98,7 +98,7 @@
           <%= link_to "动态",user_activities_path(@user.id),:class => "homepageMenuText"%>
         </div>
         <div class="homepageLeftMenuBlock">
-          <a href="javascript:void(0);" class="homepageMenuText">课程</a>
+          <a href="javascript:void(0);" class="homepageMenuText" onclick="$('#homepageLeftMenuCourses').slideToggle();">课程</a>
           <% if is_current_user%>
               <% if User.current.user_extensions && User.current.user_extensions.identity == 0 && User.current.allowed_to?(:add_course, nil, :global => true)%>
                   <%=link_to image_tag("../images/menu_setting.png",width:"14px", height: "14px",class: "homepageMenuSetting"), new_course_path%>
@@ -107,20 +107,20 @@
               <% end%>
           <% end%>
         </div>
-        <div class="homepageLeftMenuCourses">
+        <div class="homepageLeftMenuCourses" id="homepageLeftMenuCourses">
           <ul>
             <% courses = @user.courses.visible.select("courses.*,(SELECT MAX(created_at)  FROM `course_activities` WHERE course_activities.course_id = courses.id) AS a").order("a desc").limit(5)%>
             <%= render :partial => 'layouts/user_courses', :locals => {:courses => courses,:user => @user, :page => 0} %>
           </ul>
         </div>
         <div class="homepageLeftMenuBlock">
-          <a href="javascript:void(0);" class="homepageMenuText">项目</a>
+          <a href="javascript:void(0);" class="homepageMenuText" onclick="$('#homepageLeftMenuForge').slideToggle();">项目</a>
 
           <% if is_current_user%>
               <%=link_to image_tag("../images/menu_setting.png",width:"14px", height: "14px",class: "homepageMenuSetting"), new_project_path%>
           <% end%>
         </div>
-        <div class="homepageLeftMenuCourses">
+        <div class="homepageLeftMenuCourses" id="homepageLeftMenuForge">
           <ul>
             <% projects = @user.projects.visible.select("projects.*,(SELECT MAX(created_at)  FROM `forge_activities` WHERE forge_activities.project_id = projects.id) AS a").order("a desc").limit(5)%>
             <%= render :partial => 'layouts/user_projects', :locals => {:projects => projects,:user => @user, :page => 0} %>
@@ -162,10 +162,10 @@
     <div class="pro_new">
       <h3 class="box_h3 mb10">头像设置</h3>
       <div class="uppicBox">
+        <input type="button" class="uppic_btn" onclick="$('#upload_user_image').click();" value="浏览.."/>
         <%= file_field_tag 'avatar[image]',
-                           :id => nil,
-                           :class => 'uppic_btn',
-                           :style => 'width:70px;',#added by young
+                           :id => "upload_user_image",
+                           :style => 'display:none;',#added by young
                            :size => "1",
                            :multiple => false,
                            :onchange => 'addInputAvatar(this);',
diff --git a/app/views/users/_show_user_homeworks.html.erb b/app/views/users/_show_user_homeworks.html.erb
index 09413ddce..c14278de3 100644
--- a/app/views/users/_show_user_homeworks.html.erb
+++ b/app/views/users/_show_user_homeworks.html.erb
@@ -4,10 +4,10 @@
   </div>
 
   <div >
-    <form class="coursesSearchBox">
-      <input type="text" name="homework_name" placeholder="输入作业名称进行搜索" class="searchCoursesPopup" id="search_homework_name"/>
-      <a href="javascript:void(0);" class="searchIconPopup" onclick="search_homework_by_name('<%= user_search_homeworks_user_path(User.current.id)%>');"></a>
-    </form>
+    <%= form_tag user_search_homeworks_user_path(User.current.id), :multipart => true, :remote => true, :class => "coursesSearchBox" do%>
+      <input type="text" name="name" placeholder="输入作业名称进行搜索" class="searchCoursesPopup" id="search_homework_name"/>
+      <a href="javascript:void(0);" class="searchIconPopup" onclick="$(this).parent().submit();"></a>
+    <% end%>
   </div>
   <%= form_tag(user_select_homework_users_path, :multipart => true,:remote => true,:name=>"select_homework_form",:id=>'select_homework_form') do %>
       <div class="homeworkListForm mb10 " id="homework_list_form_show">
diff --git a/app/views/users/_user_homework_list.html.erb b/app/views/users/_user_homework_list.html.erb
index 7998128e0..fa9b1537a 100644
--- a/app/views/users/_user_homework_list.html.erb
+++ b/app/views/users/_user_homework_list.html.erb
@@ -11,7 +11,7 @@
             TO
             <%= link_to homework_common.course.name, course_path(homework_common.course_id), :class => "newsBlue ml15"%>
           </div>
-          <div class="homepagePostTitle">
+          <div class="homepagePostTitle hidden">
             <%= link_to homework_common.name,student_work_index_path(:homework => homework_common.id),:class => "postGrey"%>
           </div>
 
diff --git a/app/views/users/user_messages.html.erb b/app/views/users/user_messages.html.erb
index a0d568710..2d23c6dd6 100644
--- a/app/views/users/user_messages.html.erb
+++ b/app/views/users/user_messages.html.erb
@@ -6,23 +6,23 @@
         <ul class="newsType">
           <li><%= link_to "全部",user_message_path(User.current), :class => "resourcesGrey" %></li>
           <%# 课程相关消息 %>
-          <li><%= link_to "作业消息", user_message_path(User.current, :type => 'course_message'), :class => "homework" %></li>
-          <li><%= link_to "课程讨论区",user_message_path(User.current, :type => 'course_message'), :class => "resourcesGrey"  %></li>
+          <li><%= link_to "作业消息", user_message_path(User.current, :type => 'homework'), :class => "resourcesGrey" %></li>
+          <li><%= link_to "课程讨论",user_message_path(User.current, :type => 'course_message'), :class => "resourcesGrey"  %></li>
           <li><%= link_to "课程通知",user_message_path(User.current, :type => 'course_news'), :class => "resourcesGrey"  %></li>
-          <li><%= link_to "通知回复", user_message_path(User.current, :type => 'course_news_reply'), :class => "resourcesGrey" %></li>
-          <li><%= link_to "课程问卷", user_message_path(User.current, :type => 'poll'), :class => "resourcesGrey"  %></a></li>
-          <li><%= link_to "作品评阅", user_message_path(User.current, :type => 'works_reviewers'), :class => "resourcesGrey"  %></li>
-          <li><%= link_to "作品讨论", user_message_path(User.current, :type => 'works_reply'), :class => "resourcesGrey"  %></li>
+          <!--<li><%#= link_to "通知回复", user_message_path(User.current, :type => 'course_news_reply'), :class => "resourcesGrey" %></li>-->
+          <!--<li><%#= link_to "课程问卷", user_message_path(User.current, :type => 'poll'), :class => "resourcesGrey"  %></a></li>-->
+          <!--<li><%#= link_to "作品评阅", user_message_path(User.current, :type => 'works_reviewers'), :class => "resourcesGrey"  %></li>-->
+          <!--<li><%#= link_to "作品讨论", user_message_path(User.current, :type => 'works_reply'), :class => "resourcesGrey"  %></li>-->
           <%# 项目相关消息 %>
-          <li><%= link_to "指派问题", user_message_path(User.current, :type => 'issue'), :class => "resourcesGrey"  %></li>
-          <li><%= link_to "问题更新", user_message_path(User.current, :type => 'issue_update'), :class => "resourcesGrey"  %></li>
-          <li><%= link_to "项目讨论区", user_message_path(User.current, :type => 'forge_message'), :class => "resourcesGrey"  %></li>
-          <li><%= link_to "项目新闻", user_message_path(User.current, :type => 'forge_news'), :class => "resourcesGrey"  %></li>
-          <li><%= link_to "新闻回复", user_message_path(User.current, :type => 'forge_news_reply'), :class => "resourcesGrey"  %></li>
+          <li><%= link_to "项目任务", user_message_path(User.current, :type => 'issue'), :class => "resourcesGrey"  %></li>
+          <!--<li><%#= link_to "问题更新", user_message_path(User.current, :type => 'issue_update'), :class => "resourcesGrey"  %></li>-->
+          <!--<li><%#= link_to "项目讨论区", user_message_path(User.current, :type => 'forge_message'), :class => "resourcesGrey"  %></li>-->
+          <!--<li><%#= link_to "项目新闻", user_message_path(User.current, :type => 'forge_news'), :class => "resourcesGrey"  %></li>-->
+          <!--<li><%#= link_to "新闻回复", user_message_path(User.current, :type => 'forge_news_reply'), :class => "resourcesGrey"  %></li>-->
           <%# 项目相关消息 %>
-          <li><%= link_to "贴吧帖子", user_message_path(User.current, :type => 'forum'), :class => "resourcesGrey"  %></li>
+          <!--<li><%#= link_to "贴吧帖子", user_message_path(User.current, :type => 'forum'), :class => "resourcesGrey"  %></li>-->
           <%# 系统贴吧 %>
-          <li><%= link_to "用户留言",user_message_path(User.current, :type => 'user_feedback'), :class => "resourcesGrey"  %></li>
+          <!--<li><%#= link_to "用户留言",user_message_path(User.current, :type => 'user_feedback'), :class => "resourcesGrey"  %></li>-->
 
         </ul>
       </li>
diff --git a/config/routes.rb b/config/routes.rb
index 7237787bd..8451b7365 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -42,7 +42,7 @@ RedmineApp::Application.routes.draw do
 
   end
 
-  resources :school do
+  resources :school, :except => [:show] do
     collection do
 
     end
@@ -328,7 +328,7 @@ RedmineApp::Application.routes.draw do
       match 'user_visitorlist', :to => 'users#user_visitorlist', :via => :get
       match 'user_homeworks', :to => 'users#user_homeworks', :via => :get
       get 'user_import_homeworks'
-      get 'user_search_homeworks'
+      post 'user_search_homeworks'
       get 'user_import_resource'
       match 'watch_projects', :to => 'users#watch_projects', :via => :get
       #
diff --git a/db/migrate/20150820025358_about_user_activities.rb b/db/migrate/20150820025358_about_user_activities.rb
index ea98e9a32..82b58a537 100644
--- a/db/migrate/20150820025358_about_user_activities.rb
+++ b/db/migrate/20150820025358_about_user_activities.rb
@@ -32,6 +32,6 @@ class AboutUserActivities < ActiveRecord::Migration
   end
 
   def down
-
+    UserActivity.destroy_all
   end
 end
diff --git a/public/stylesheets/base.css b/public/stylesheets/base.css
index fa1bbdd4a..7e2376add 100644
--- a/public/stylesheets/base.css
+++ b/public/stylesheets/base.css
@@ -1,7 +1,7 @@
 /* CSS Document */
 /* 2015-06-26 */
-body,h1,h2,h3,h4,h5,h6,hr,p,blockquote,dl,dt,dd,ul,ol,li,pre,form,fieldset,legend,button,input,textarea,th,td{ margin:0; padding:0;}
-body,table,input,textarea,select,button { font-family: "微软雅黑","宋体"; font-size:12px;line-height:1.5;}
+.navContainer h1,h2,h3,h4,h5,h6,hr,blockquote,dl,dt,dd,ul,ol,li,pre,form,fieldset,legend,button,input,textarea,th,td{ margin:0; padding:0;}
+.navContainer body,table,input,textarea,select,button { font-family: "微软雅黑","宋体"; font-size:12px;line-height:1.5;}
 div,img,tr,td,table{ border:0;}
 table,tr,td{border:0;cellspacing:0; cellpadding:0;}
 ol,ul,li{ list-style-type:none}
diff --git a/public/stylesheets/header.css b/public/stylesheets/header.css
index 33c92809b..2ba6f0bbf 100644
--- a/public/stylesheets/header.css
+++ b/public/stylesheets/header.css
@@ -97,9 +97,9 @@ a.topnav_login_box:hover {color:#a1ebff;}
 /*底部*/
 #Footer{background-color:#ffffff;  padding-bottom:15px; color:#666666;} /*margin-bottom:10px;*/
 .footerAboutContainer {width:auto; border-bottom:1px solid #efefef;}
-.footerAbout{ width:455px; margin:0 auto;height:35px; line-height:35px;}
+.footerAbout{ width:485px; margin:0 auto;height:35px; line-height:35px;}
 .languageBox {width:55px; height:20px; margin-left:5px; outline:none; color:#666666; border:1px solid #d9d9d9;}
-.departments{ width:890px; margin:5px auto 0 auto;height:30px;line-height:30px;}
+.departments{ width:950px; margin:5px auto 0 auto;height:30px;line-height:30px;}
 .copyright{ width:375px; margin:0 auto;height:20px;line-height:20px;}
 a.f_grey {color:#666666 !important;}
 a.f_grey:hover {color:#000000 !important;}
diff --git a/public/stylesheets/new_user.css b/public/stylesheets/new_user.css
index a56087017..9812c89fd 100644
--- a/public/stylesheets/new_user.css
+++ b/public/stylesheets/new_user.css
@@ -865,7 +865,7 @@ a.box_close{background:url(../images/img_floatbox.png) -22px 0 no-repeat;}
 .uppicBox{ width:265px; height:265px; background:#f2f2f5; float:left; color:#666;  text-align:center;}
 .showpicBox{width:133px; height:250px; background:#f2f2f5; float:left; margin-left:20px; text-align:center; padding-top:15px; color:#666;}
 .mr15{ margin-right:15px;}
-.uppic_btn{border:none; width:150px; background:none; margin-bottom:5px; color:#666; margin-top:105px;}
+.uppic_btn{background: #64bdd9;color: #fff;width: 80px;height: 25px;margin-top: 105px;}
 
 /*20150820课程作业 LB*/
 .HomeWork {width:708px; background-color:#ffffff; padding:10px 20px 20px 20px; border:1px solid #dddddd;}
diff --git a/public/stylesheets/users.css b/public/stylesheets/users.css
index 48d73f86a..849aa1c02 100644
--- a/public/stylesheets/users.css
+++ b/public/stylesheets/users.css
@@ -116,7 +116,6 @@ a:hover.c_lgrey{ color:#3ca5c6;}
 .uppicBox{ width:265px; height:265px; background:#f2f2f5; float:left; color:#666;  text-align:center;}
 .showpicBox{width:133px; height:250px; background:#f2f2f5; float:left; margin-left:20px; text-align:center; padding-top:15px; color:#666;}
 .mr15{ margin-right:15px;}
-.uppic_btn{border:none; width:150px; background:none; margin-bottom:5px; color:#666; margin-top:105px;}
 /* 新建作品*/
 .mr8{ margin-right:8px;}
 .mt2{ margin-top:2px;}