diff --git a/app/views/users/_user_homework_form.html.erb b/app/views/users/_user_homework_form.html.erb
index 7121defa1..00ca5d345 100644
--- a/app/views/users/_user_homework_form.html.erb
+++ b/app/views/users/_user_homework_form.html.erb
@@ -1,7 +1,7 @@
<%= javascript_include_tag "/assets/kindeditor/kindeditor" %>
@@ -27,7 +27,7 @@
- <%= select_tag :course_id, options_for_select(get_as_teacher_courses(User.current), homework.course_id), {:class => "InputBox w708"} %>
+ <%= select_tag :course_id, options_for_select(get_as_teacher_courses(User.current), homework.course_id), {:class => "InputBox w720",:value => "请选择发布作业的课程"} %>
diff --git a/public/images/homepage_icon.png b/public/images/homepage_icon.png
index 4478af070..d39624a2e 100644
Binary files a/public/images/homepage_icon.png and b/public/images/homepage_icon.png differ
diff --git a/public/stylesheets/new_user.css b/public/stylesheets/new_user.css
index d357ab0e7..e50062b38 100644
--- a/public/stylesheets/new_user.css
+++ b/public/stylesheets/new_user.css
@@ -528,7 +528,8 @@ a.coursesLineGrey:hover {color:#ffffff;}
.homepageLeftMenuMore {height:18px;}
.homepageLeftMenuMore:hover {background-color:#269ac9;}
.homepageLeftMenuMoreIcon {background:url(../images/homepage_icon.png) -74px -240px no-repeat; display:block; height:18px;}
-.homepageMenuSetting {display:inline-block; margin-right: 17px; margin-top: 18px;}
+.homepageMenuSetting {display:inline-block; margin-left:155px;background:url(../images/homepage_icon.png) -190px -365px no-repeat; width:15px; height:15px;}
+.homepageMenuSetting:hover {background:url(../images/homepage_icon.png) -190px -407px no-repeat;}
a.homepageMenuText {color:#484848; font-size:16px; margin-left:20px;}
.homepageLeftLabelContainer {width:238px; border:1px solid #dddddd; background-color:#ffffff; margin-top:10px;}
.homepageLabelText {color:#484848; font-size:16px; margin-left:10px; margin-bottom:12px; display:block;}
@@ -879,6 +880,8 @@ a:hover.BlueCirBtn{ background:#15bccf; color:#fff;}
.W120{ width:110px;}
.W700{ width:700px;max-width: 700px;min-width: 700px;}
.w708{width: 708px;}
+.w712{width:712px;max-width:712px;min-width: 712px;}
+.w720{width:721px;}
a.AnnexBtn{ background: url(../images/homepage_icon2.png) 0px -343px no-repeat; width:70px; height:20px; display:block; padding-left:20px; color:#888888;}
a:hover.AnnexBtn{background: url(../images/homepage_icon2.png) -90px -343px no-repeat; color:#15bccf;}
a.FilesBtn{ background: url(../images/homepage_icon2.png) 0px -373px no-repeat; width:70px; height:20px; display:block; padding-left:20px; color:#888888;}