diff --git a/db/schema.rb b/db/schema.rb
index 5fcdda1c5..d5ef9f1c5 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -474,6 +474,13 @@ ActiveRecord::Schema.define(:version => 20150815030833) do
 
   add_index "delayed_jobs", ["priority", "run_at"], :name => "delayed_jobs_priority"
 
+  create_table "discuss_demos", :force => true do |t|
+    t.string   "title"
+    t.text     "body"
+    t.datetime "created_at", :null => false
+    t.datetime "updated_at", :null => false
+  end
+
   create_table "documents", :force => true do |t|
     t.integer  "project_id",                :default => 0,  :null => false
     t.integer  "category_id",               :default => 0,  :null => false
@@ -896,7 +903,6 @@ ActiveRecord::Schema.define(:version => 20150815030833) do
     t.datetime "created_on"
     t.integer  "comments_count",               :default => 0,  :null => false
     t.integer  "course_id"
-    t.datetime "updated_on"
   end
 
   add_index "news", ["author_id"], :name => "index_news_on_author_id"
diff --git a/public/stylesheets/public_new.css b/public/stylesheets/public_new.css
index 43f6288c5..b1426f9bc 100644
--- a/public/stylesheets/public_new.css
+++ b/public/stylesheets/public_new.css
@@ -588,100 +588,100 @@ input.sendSourceText {font-size:14px;color:#ffffff;background-color:#64bdd9;}
 
 
 /*资源库*/
-.resources {width:730px; background-color:#ffffff;}
-.resourcesBanner {width:730px; height:40px; background-color:#eaeaea; margin-bottom:10px;}
-.bannerName {background:#64bdd9; color:#ffffff; height:40px; line-height:40px; width:90px; text-align:center; font-weight:normal; vertical-align:middle; font-size: 16px; float:left;}
-.resourcesSelect {width:40px; height:40px; float:right; position:relative;}
-.resourcesSelected {width:25px; height:20px;}
-.resourcesIcon {margin-top:15px; display:block; position:relative; background:url(images/resource_icon_list.png) 0px 0px no-repeat; width:25px; height:20px;}
-.resourcesIcon:hover { background:url(images/resource_icon_list.png) 0px -25px no-repeat;}
-.resourcesType {width:50px; background-color:#ffffff; float:left; list-style:none; position:absolute; border:1px solid #eaeaea; border-radius:5px; top:35px; padding:5px 10px; left:-30px; font-size:12px; color:#888888; display:none;}
-a.resourcesGrey {font-size:12px; color:#888888;}
-a.resourcesGrey:hover {font-size:12px; color:#15bccf;}
-.resourcesBanner ul li:hover ul.resourcesType {display:block;}
-ul li:hover ul {display:block;}
-.resourcesUploadBox {float:right; width:103px; height:34px; background-color:#64bdd9; line-height:34px; vertical-align:middle; text-align:center; margin-left:12px;}
-.uploadIcon {background:url(images/resource_icon_list.png) -35px 10px no-repeat; float:left; display:block; width:30px; height:30px; margin-left:-3px;}
-a.uploadText {color:#ffffff; font-size:14px;}
-.resourcesSearchloadBox {border:1px solid #e6e6e6; width:225px; float:right; background-color:#ffffff;}
-.searchResource {border:none; outline:none; background-color:#ffffff; width:184px; height:32px; padding-left:10px; display:block; float:left;}
-.searchIcon{width:31px; height:32px; background-color:#ffffff; background:url(images/resource_icon_list.png) -40px -15px no-repeat; display:block; float:left;}
-.resourcesSearchBanner {height:34px; margin-bottom:10px;}
-.resourcesListTab {width:730px; height:40px; background-color:#f6f6f6; border-bottom:1px solid #eaeaea; font-size:14px; color:#7a7a7a;}
-.resourcesListCheckbox {width:40px; height:40px; line-height:40px; text-align:center; vertical-align:middle;}
-.resourcesCheckbox {padding:0px; margin:0px; margin-top:14px; width:12px; height:12px;}
-.resourcesListName {width:135px; height:40px; line-height:40px; text-align:left;}
-.resourcesListSize {width:110px; height:40px; line-height:40px; text-align:center;}
-.resourcesListType {width:150px; height:40px; line-height:40px; text-align:center;}
-.resourcesListUploader {width:130px; height:40px; line-height:40px; text-align:center;}
-.resourcesListTime {width:165px; height:40px; line-height:40px; text-align:center;}
-.resourcesList {width:730px; height:39px; background-color:#ffffff; border-bottom:1px dashed #eaeaea; color:#9a9a9a; font-size:12px;}
-a.resourcesBlack {font-size:12px; color:#4c4c4c;}
-a.resourcesBlack:hover {font-size:12px; color:#000000;}
-.dropdown-menu {
-    position: absolute;
-    top: 100%;
-    left: 0;
-    z-index: 1000;
-    display: none;
-    float: left;
-    min-width: 80px;
-    padding: 5px 0;
-    margin: 2px 0 0;
-    font-size: 12px;
-    text-align: left;
-    background-color: #fff;
-    -webkit-background-clip: padding-box;
-    background-clip: padding-box;
-    border: 1px solid #ccc;
-    border-radius: 4px;
-    -webkit-box-shadow: 0 6px 12px rgba(0, 0, 0, .175);
-    box-shadow: 0 6px 12px rgba(0, 0, 0, .175);
-}
-.dropdown-menu > li > a {
-    display: block;
-    padding: 3px 20px;
-    clear: both;
-    font-weight: normal;
-    line-height: 1.5;
-    color:#616060;
-    white-space: nowrap;
-}
-.dropdown-menu > li > a:hover{
-    color: #ffffff;
-    text-decoration: none;
-    background-color: #64bdd9;
-    outline:none;
-}
+/*.resources {width:730px; background-color:#ffffff;}*/
+/*.resourcesBanner {width:730px; height:40px; background-color:#eaeaea; margin-bottom:10px;}*/
+/*.bannerName {background:#64bdd9; color:#ffffff; height:40px; line-height:40px; width:90px; text-align:center; font-weight:normal; vertical-align:middle; font-size: 16px; float:left;}*/
+/*.resourcesSelect {width:40px; height:40px; float:right; position:relative;}*/
+/*.resourcesSelected {width:25px; height:20px;}*/
+/*.resourcesIcon {margin-top:15px; display:block; position:relative; background:url(images/resource_icon_list.png) 0px 0px no-repeat; width:25px; height:20px;}*/
+/*.resourcesIcon:hover { background:url(images/resource_icon_list.png) 0px -25px no-repeat;}*/
+/*.resourcesType {width:50px; background-color:#ffffff; float:left; list-style:none; position:absolute; border:1px solid #eaeaea; border-radius:5px; top:35px; padding:5px 10px; left:-30px; font-size:12px; color:#888888; display:none;}*/
+/*a.resourcesGrey {font-size:12px; color:#888888;}*/
+/*a.resourcesGrey:hover {font-size:12px; color:#15bccf;}*/
+/*.resourcesBanner ul li:hover ul.resourcesType {display:block;}*/
+/*ul li:hover ul {display:block;}*/
+/*.resourcesUploadBox {float:right; width:103px; height:34px; background-color:#64bdd9; line-height:34px; vertical-align:middle; text-align:center; margin-left:12px;}*/
+/*.uploadIcon {background:url(images/resource_icon_list.png) -35px 10px no-repeat; float:left; display:block; width:30px; height:30px; margin-left:-3px;}*/
+/*a.uploadText {color:#ffffff; font-size:14px;}*/
+/*.resourcesSearchloadBox {border:1px solid #e6e6e6; width:225px; float:right; background-color:#ffffff;}*/
+/*.searchResource {border:none; outline:none; background-color:#ffffff; width:184px; height:32px; padding-left:10px; display:block; float:left;}*/
+/*.searchIcon{width:31px; height:32px; background-color:#ffffff; background:url(images/resource_icon_list.png) -40px -15px no-repeat; display:block; float:left;}*/
+/*.resourcesSearchBanner {height:34px; margin-bottom:10px;}*/
+/*.resourcesListTab {width:730px; height:40px; background-color:#f6f6f6; border-bottom:1px solid #eaeaea; font-size:14px; color:#7a7a7a;}*/
+/*.resourcesListCheckbox {width:40px; height:40px; line-height:40px; text-align:center; vertical-align:middle;}*/
+/*.resourcesCheckbox {padding:0px; margin:0px; margin-top:14px; width:12px; height:12px;}*/
+/*.resourcesListName {width:135px; height:40px; line-height:40px; text-align:left;}*/
+/*.resourcesListSize {width:110px; height:40px; line-height:40px; text-align:center;}*/
+/*.resourcesListType {width:150px; height:40px; line-height:40px; text-align:center;}*/
+/*.resourcesListUploader {width:130px; height:40px; line-height:40px; text-align:center;}*/
+/*.resourcesListTime {width:165px; height:40px; line-height:40px; text-align:center;}*/
+/*.resourcesList {width:730px; height:39px; background-color:#ffffff; border-bottom:1px dashed #eaeaea; color:#9a9a9a; font-size:12px;}*/
+/*a.resourcesBlack {font-size:12px; color:#4c4c4c;}*/
+/*a.resourcesBlack:hover {font-size:12px; color:#000000;}*/
+/*.dropdown-menu {*/
+    /*position: absolute;*/
+    /*top: 100%;*/
+    /*left: 0;*/
+    /*z-index: 1000;*/
+    /*display: none;*/
+    /*float: left;*/
+    /*min-width: 80px;*/
+    /*padding: 5px 0;*/
+    /*margin: 2px 0 0;*/
+    /*font-size: 12px;*/
+    /*text-align: left;*/
+    /*background-color: #fff;*/
+    /*-webkit-background-clip: padding-box;*/
+    /*background-clip: padding-box;*/
+    /*border: 1px solid #ccc;*/
+    /*border-radius: 4px;*/
+    /*-webkit-box-shadow: 0 6px 12px rgba(0, 0, 0, .175);*/
+    /*box-shadow: 0 6px 12px rgba(0, 0, 0, .175);*/
+/*}*/
+/*.dropdown-menu > li > a {*/
+    /*display: block;*/
+    /*padding: 3px 20px;*/
+    /*clear: both;*/
+    /*font-weight: normal;*/
+    /*line-height: 1.5;*/
+    /*color:#616060;*/
+    /*white-space: nowrap;*/
+/*}*/
+/*.dropdown-menu > li > a:hover{*/
+    /*color: #ffffff;*/
+    /*text-decoration: none;*/
+    /*background-color: #64bdd9;*/
+    /*outline:none;*/
+/*}*/
 
 /*发送资源弹窗*/
 /*.resourceShareContainer {width:100%; height:100%; background:#666; filter:alpha(opacity=50); opacity:0.5; -moz-opacity:0.5; position:absolute; left:0; top:0; z-index:-999;}*/
-.resourceSharePopup {width:300px; height:auto; border:3px solid #15bccf; padding-left:16px; padding-bottom:16px; background-color:#ffffff; position:absolute; top:50%; left:50%; margin-left:-150px; z-index:1000;}
-.sendText {font-size:16px; color:#15bccf; line-height:16px; padding-top:20px; width:140px; display:inline-block;}
-.resourcePopupClose {width:20px; height:20px; display:inline-block; float:right;}
-.resourceClose {background:url(images/resource_icon_list.png) 0px -40px no-repeat; width:20px; height:20px; display:inline-block;}
-.resourcesSearchBox {border:1px solid #e6e6e6; width:225px; height:25px; background-color:#ffffff; margin-top:12px; margin-bottom:15px;}
-.searchResourcePopup {border:none; outline:none; background-color:#ffffff; width:184px; height:25px; padding-left:10px; display:inline-block; float:left;}
-.searchIconPopup{width:31px; height:25px; background-color:#ffffff; background:url(images/resource_icon_list.png) -40px -18px no-repeat; display:inline-block; float:left;}
-.courseSend {width:260px; height:15px; line-height:15px; margin-bottom:10px;}
-.courseSendCheckbox {padding:0px; margin:0px; width:12px; height:12px; margin-right:10px; display:inline-block; margin-top:2px;}
-.sendCourseName {font-size:12px; color:#5f6060;}
-.courseSendSubmit {width:50px; height:25px; line-height:25px; text-align:center; vertical-align:middle; background-color:#64bdd9; margin-right:25px; float:left;}
-.courseSendCancel {width:50px; height:25px; line-height:25px; text-align:center; vertical-align:middle; background-color:#c1c1c1; float:left}
-a.sendSourceText {font-size:14px; color:#ffffff;}
+/*.resourceSharePopup {width:300px; height:auto; border:3px solid #15bccf; padding-left:16px; padding-bottom:16px; background-color:#ffffff; position:absolute; top:50%; left:50%; margin-left:-150px; z-index:1000;}*/
+/*.sendText {font-size:16px; color:#15bccf; line-height:16px; padding-top:20px; width:140px; display:inline-block;}*/
+/*.resourcePopupClose {width:20px; height:20px; display:inline-block; float:right;}*/
+/*.resourceClose {background:url(images/resource_icon_list.png) 0px -40px no-repeat; width:20px; height:20px; display:inline-block;}*/
+/*.resourcesSearchBox {border:1px solid #e6e6e6; width:225px; height:25px; background-color:#ffffff; margin-top:12px; margin-bottom:15px;}*/
+/*.searchResourcePopup {border:none; outline:none; background-color:#ffffff; width:184px; height:25px; padding-left:10px; display:inline-block; float:left;}*/
+/*.searchIconPopup{width:31px; height:25px; background-color:#ffffff; background:url(images/resource_icon_list.png) -40px -18px no-repeat; display:inline-block; float:left;}*/
+/*.courseSend {width:260px; height:15px; line-height:15px; margin-bottom:10px;}*/
+/*.courseSendCheckbox {padding:0px; margin:0px; width:12px; height:12px; margin-right:10px; display:inline-block; margin-top:2px;}*/
+/*.sendCourseName {font-size:12px; color:#5f6060;}*/
+/*.courseSendSubmit {width:50px; height:25px; line-height:25px; text-align:center; vertical-align:middle; background-color:#64bdd9; margin-right:25px; float:left;}*/
+/*.courseSendCancel {width:50px; height:25px; line-height:25px; text-align:center; vertical-align:middle; background-color:#c1c1c1; float:left}*/
+/*a.sendSourceText {font-size:14px; color:#ffffff;}*/
 
 /*上传资源弹窗*/
-.resourceUploadPopup {width:400px; height:auto; border:3px solid #15bccf; padding-left:16px; padding-bottom:16px; background-color:#ffffff; position:absolute; top:50%; left:50%; margin-left:-200px; z-index:1000;}
-.uploadText {font-size:16px; color:#15bccf; line-height:16px; padding-top:20px; width:140px; display:inline-block;}
-.uploadBoxContainer {height:33px; line-height:33px; margin-top:10px; position:relative;}
-.uploadBox {width:100px; height:33px; line-height:33px; text-align:center; vertical-align:middle; background-color:#64bdd9; border-radius:3px; float:left; margin-right:12px;}
-a.uploadIcon {background:url(images/resource_icon_list.png) 8px -60px no-repeat; width:100px; height:33px;}
-.chooseFile {color:#ffffff; display:block; margin-left:32px;}
-.uploadResourceIntr {width:250px; height:33px; float:left; line-height:33px; font-size:12px;}
-.uploadResourceName {width:250px; display:inline-block; line-height:15px; font-size:12px; color:#444444; margin-bottom:2px;}
-.uploadResourceIntr2 {width:250px; display:inline-block; line-height:15px; font-size:12px; color:#444444;}
-.uploadType {margin:10px 0; border:1px solid #e6e6e6; width:100px; height:30px; outline:none; font-size:12px; color:#888888;}
-.uploadKeyword {margin-bottom:10px; outline:none; border:1px solid #e6e6e6; height:30px; width:280px;}
+/*.resourceUploadPopup {width:400px; height:auto; border:3px solid #15bccf; padding-left:16px; padding-bottom:16px; background-color:#ffffff; position:absolute; top:50%; left:50%; margin-left:-200px; z-index:1000;}*/
+/*.uploadText {font-size:16px; color:#15bccf; line-height:16px; padding-top:20px; width:140px; display:inline-block;}*/
+/*.uploadBoxContainer {height:33px; line-height:33px; margin-top:10px; position:relative;}*/
+/*.uploadBox {width:100px; height:33px; line-height:33px; text-align:center; vertical-align:middle; background-color:#64bdd9; border-radius:3px; float:left; margin-right:12px;}*/
+/*a.uploadIcon {background:url(images/resource_icon_list.png) 8px -60px no-repeat; width:100px; height:33px;}*/
+/*.chooseFile {color:#ffffff; display:block; margin-left:32px;}*/
+/*.uploadResourceIntr {width:250px; height:33px; float:left; line-height:33px; font-size:12px;}*/
+/*.uploadResourceName {width:250px; display:inline-block; line-height:15px; font-size:12px; color:#444444; margin-bottom:2px;}*/
+/*.uploadResourceIntr2 {width:250px; display:inline-block; line-height:15px; font-size:12px; color:#444444;}*/
+/*.uploadType {margin:10px 0; border:1px solid #e6e6e6; width:100px; height:30px; outline:none; font-size:12px; color:#888888;}*/
+/*.uploadKeyword {margin-bottom:10px; outline:none; border:1px solid #e6e6e6; height:30px; width:280px;}*/
 
 
 /*新个人主页框架css*/