编程作业的作品详情在顶部增加“收起”

app/views/student_work/_programing_work_show.html.erb

@@ -4,6 +4,7 @@
         <li class="fl" >
           <span class="tit_fb">上交时间：</span>
           <%=format_time work.created_at %>
+          <a href="javascript:void(0);" class="linkBlue mt5 mb5" style="margin-left:165px; width: 24px;" onclick="$('#about_hwork_<%= work.id%>').html('');">收起</a>
         </li>
 
         <% if work.user == User.current && Time.parse(@homework.end_time.to_s).strftime("%Y-%m-%d") >= Time.now.strftime("%Y-%m-%d") %>