diff --git a/app/views/courses/_join_private_course.html.erb b/app/views/courses/_join_private_course.html.erb
index d37feeb57..873144afe 100644
--- a/app/views/courses/_join_private_course.html.erb
+++ b/app/views/courses/_join_private_course.html.erb
@@ -73,11 +73,18 @@
             </li>
             <li style="margin-top: 30px;">
               <span style="margin-right: 20px;">身&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;份：</span>
-              <select name="role" class="IDType">
-                <option value="9">教师</option>
-                <option value="7">教辅</option>
-                <option value="10">学生</option>
-              </select>
+              <% if User.current.logged? && User.current.extensions &&  User.current.extensions.identity == 0%>
+                  <select name="role" class="IDType">
+                    <option value="9">教师</option>
+                    <option value="7">教辅</option>
+                    <option value="10">学生</option>
+                  </select>
+              <%else%>
+                  <select name="role" class="IDType">
+                    <option value="10">学生</option>
+                    <option value="7">教辅</option>
+                  </select>
+              <%end%>
             </li>
             <li>
               <a href="javascript:" class="btn_join" style="margin-left: 50px;" onclick="submit_form(this);">
diff --git a/app/views/courses/set_course_outline.js.erb b/app/views/courses/set_course_outline.js.erb
index a43a62c7d..e920005cd 100644
--- a/app/views/courses/set_course_outline.js.erb
+++ b/app/views/courses/set_course_outline.js.erb
@@ -3,6 +3,6 @@ hideModal();
 <% else %>
     $("#course_outline_bar").html('<a href="<%=syllabus_course_path(@course) %>" title="课程大纲" class="mr5 syllabusIcon fl"> </a>')
 <%end %>
-<%if @is_in_show_outline_page && @is_in_show_outline_page == 'Y'%>
+<%#if @is_in_show_outline_page && @is_in_show_outline_page == 'Y'%>
     window.location.href='<%=syllabus_course_path(@course) %>';
-<% end %>
+<%# end %>
diff --git a/app/views/courses/syllabus.html.erb b/app/views/courses/syllabus.html.erb
index bf6980dd2..bb3421cba 100644
--- a/app/views/courses/syllabus.html.erb
+++ b/app/views/courses/syllabus.html.erb
@@ -58,7 +58,7 @@
                                 '取消大纲',
                                 {:controller => 'blog_comments',:action => 'destroy',:user_id=>BlogComment.find(@course.outline).author_id,:blog_id=>BlogComment.find(@course.outline).blog_id, :id => @course.outline,:course_id=>@course.id},
                                 :method => :delete,
-                                :data => {:confirm => '确定取消么'},
+                                :data => {:confirm => '您确定要取消么？'},
                                 :class => 'postOptionLink'
                         ) if User.current && User.current.id == @article.author.id %>
                   </li>
diff --git a/public/images/course/arrow_up.jpg b/public/images/course/arrow_up.jpg
index bbf348fe1..7bcfa859c 100644
Binary files a/public/images/course/arrow_up.jpg and b/public/images/course/arrow_up.jpg differ
diff --git a/public/images/course/arrow_up2.jpg b/public/images/course/arrow_up2.jpg
new file mode 100644
index 000000000..bbf348fe1
Binary files /dev/null and b/public/images/course/arrow_up2.jpg differ
diff --git a/public/stylesheets/courses.css b/public/stylesheets/courses.css
index 5914d57e6..1cff7e07a 100644
--- a/public/stylesheets/courses.css
+++ b/public/stylesheets/courses.css
@@ -33,7 +33,7 @@ a:hover.news_foot{ color:#787b7e; border:1px solid #d4d4d4;}
 .ctt2{clear:both; }
 .hworkListBanner {width:720px; height:40px; background:#eaeaea; margin-bottom:10px;}
 .hworkListContainer {float:left; clear:both; width:720px;}
-.showHwork{ border:2px solid #269ac9; width:696px; padding:10px; color:#666666; padding-bottom:0px; }
+.showHwork{ border:1px solid #eaeaea; width:696px; padding:10px; color:#666666; padding-bottom:0px; box-shadow: 0px 2px 8px rgba(146, 153, 169, 0.5); }
 .showHworkP{ width:630px; float:left;}
 .showHwork ul li {margin-bottom: 5px;}
 .hworkPingText{ float:left; border:1px solid #e4e4e4; padding:5px; width:618px; height:35px;}
@@ -838,7 +838,7 @@ a:hover.icon_remove{background:url(images/icons.png) -20px -338px no-repeat;}
 a.hwork_center{ display:block; width:60px; text-align:center; margin-right:5px;}
 .show_hwork{ border:2px solid #64bdd9; width:646px; padding:10px; color:#666666; padding-bottom:0px; }
 .show_hwork ul li{ margin-bottom:5px;}
-.show_hwork_arrow{ position:relative; top:2px; left:165px;background:url(../images/course/arrow_up.jpg) 0 0 no-repeat; width:20px; height:11px;}
+.show_hwork_arrow{ position:relative; top:1px; left:165px;background:url(../images/course/arrow_up.jpg) 0 0 no-repeat; width:20px; height:11px;}
 .tit_fb{ font-weight:bold; width:66px; text-align:right; display:block; float:left;}
 .ml160{ margin-left:160px;}
 .show_hwork_p{ width:630px; float:left;}