diff --git a/app/views/users/_user_message_course.html.erb b/app/views/users/_user_message_course.html.erb
index 91ea32a62..d7042b6c2 100644
--- a/app/views/users/_user_message_course.html.erb
+++ b/app/views/users/_user_message_course.html.erb
@@ -157,7 +157,8 @@
               <li>匿评截止：<span style="color:Red;"><%= ma.course_message.homework_detail_manual.evaluation_end %>&nbsp;&nbsp;24点</span></li>
             </ul>
             <% unless User.current.allowed_to?(:as_teacher, ma.course_message.course)%>
-              <p>请您尽早完成匿评！如果您在规定时间内未完成匿评，一次将被扣<%= ma.course_message.homework_detail_manual.absence_penalty %>分。</p>
+              <p>请您尽早完成匿评！如果您在截止日期前未完成匿评，您的最终成绩将被扣除<%= ma.course_message.homework_detail_manual.absence_penalty %>分乘以缺评份数。</p>
+              <p>例如，您缺评了两份作品，则您的最终成绩将被扣除 <%= ma.course_message.homework_detail_manual.absence_penalty %> * 2 = <%= ma.course_message.homework_detail_manual.absence_penalty * 2 %>分</p>
             <% end%>
           </div>
           <li class="homepageNewsTime fl"><%= time_tag(ma.created_at).html_safe %> </li>
diff --git a/public/stylesheets/new_user.css b/public/stylesheets/new_user.css
index 3b79af2bb..5ccf68516 100644
--- a/public/stylesheets/new_user.css
+++ b/public/stylesheets/new_user.css
@@ -1269,7 +1269,7 @@ a:hover.tijiao{ background:#0f99a9;}
 #cboxPrevious{position:absolute; bottom:0px; left:0; color:#444;}
 #cboxNext{position:absolute; bottom:0px; left:63px; color:#444;}
 #cboxClose{position:absolute; bottom:0; right:0; display:block; color:#444;}
-.system_message_style {line-height: 19.1px; max-width: 681px; work-wrap: break-word; word-break: break-all; text-overflow:clip;}
+.system_message_style {line-height: 19.1px; max-width: 681px; work-wrap: break-word; word-break: break-all; text-overflow:clip; z-index:9999}
 .system_message_style img {max-width: 100%;}
 /*20150906关联项目LB*/
 a.RalationIcon{  background: url(../images/homepage_icon.png) -183px -396px  no-repeat; height:20px; display:block; padding-left:20px; color:#888888;}