diff --git a/app/views/blog_comments/reply.js.erb b/app/views/blog_comments/reply.js.erb
index fe46d870c..2a4e71f1c 100644
--- a/app/views/blog_comments/reply.js.erb
+++ b/app/views/blog_comments/reply.js.erb
@@ -5,20 +5,4 @@
 $("#user_activity_<%= @user_activity_id%>").replaceWith("<%= escape_javascript(render :partial => 'blogs/article', :locals => {:activity => @article,:user_activity_id =>@user_activity_id}) %>");
 //init_activity_KindEditor_data(<%#= @user_activity_id%>,"","87%", 'UserActivity');
 <% end %>
-init_activity_KindEditor_data(<%= @user_activity_id%>,"","87%", 'UserActivity');
-showNormalImage('activity_description_<%= @user_activity_id %>');
-if($("#intro_content_<%= @user_activity_id %>").height() > 810) {
-    $("#intro_content_show_<%= @user_activity_id %>").show();
-}
-$("#intro_content_show_<%= @user_activity_id %>").click(function(){
-    $("#activity_description_<%= @user_activity_id %>").toggleClass("maxh360");
-    $("#activity_description_<%= @user_activity_id%>").toggleClass("lh18");
-    $("#intro_content_show_<%= @user_activity_id %>").hide();
-    $("#intro_content_hide_<%= @user_activity_id %>").show();
-});
-$("#intro_content_hide_<%= @user_activity_id %>").click(function(){
-    $("#activity_description_<%= @user_activity_id %>").toggleClass("maxh360");
-    $("#activity_description_<%= @user_activity_id%>").toggleClass("lh18");
-    $("#intro_content_hide_<%= @user_activity_id %>").hide();
-    $("#intro_content_show_<%= @user_activity_id %>").show();
-});
\ No newline at end of file
+init_activity_KindEditor_data(<%= @user_activity_id%>,"","87%", 'UserActivity');
\ No newline at end of file
diff --git a/app/views/blogs/_article.html.erb b/app/views/blogs/_article.html.erb
index 99c743a96..8d366a05a 100644
--- a/app/views/blogs/_article.html.erb
+++ b/app/views/blogs/_article.html.erb
@@ -57,7 +57,7 @@
       <div class="homepagePostDate">
         发帖时间：<%= format_time(activity.created_on) %>
       </div>
-      <div class="homepagePostIntro break_word upload_img list_style maxh360 lh18 table_maxWidth" id="activity_description_<%= user_activity_id%>">
+      <div class="homepagePostIntro break_word upload_img list_style maxh360 table_maxWidth" id="activity_description_<%= user_activity_id%>">
         <div id="intro_content_<%= user_activity_id%>">
           <% if activity.parent_id.nil? %>
               <%= activity.content.to_s.html_safe%>
@@ -176,3 +176,6 @@
     <% end %>
   </div>
 </div>
+<script type="text/javascript">
+    $(description_show_hide(<%=user_activity_id %>));
+</script>
diff --git a/app/views/blogs/_article_list.html.erb b/app/views/blogs/_article_list.html.erb
index 62f1391b0..534c33609 100644
--- a/app/views/blogs/_article_list.html.erb
+++ b/app/views/blogs/_article_list.html.erb
@@ -75,22 +75,6 @@
 
               $(function () {
                   init_activity_KindEditor_data(<%= topic.id%>, null, "87%", "<%=topic.class.to_s%>");
-                  showNormalImage('activity_description_<%= topic.id %>');
-                  if($("#intro_content_<%= topic.id %>").height() > 810) {
-                      $("#intro_content_show_<%= topic.id %>").show();
-                  }
-                  $("#intro_content_show_<%= topic.id %>").click(function(){
-                      $("#activity_description_<%= topic.id %>").toggleClass("maxh360");
-                      $("#activity_description_<%= topic.id%>").toggleClass("lh18");
-                      $("#intro_content_show_<%= topic.id %>").hide();
-                      $("#intro_content_hide_<%= topic.id %>").show();
-                  });
-                  $("#intro_content_hide_<%= topic.id %>").click(function(){
-                      $("#activity_description_<%= topic.id %>").toggleClass("maxh360");
-                      $("#activity_description_<%= topic.id%>").toggleClass("lh18");
-                      $("#intro_content_hide_<%= topic.id %>").hide();
-                      $("#intro_content_show_<%= topic.id %>").show();
-                  });
               });
           </script>
           <% if topic %>
diff --git a/app/views/boards/_course_show_detail.html.erb b/app/views/boards/_course_show_detail.html.erb
index 8f50905c6..804f6543e 100644
--- a/app/views/boards/_course_show_detail.html.erb
+++ b/app/views/boards/_course_show_detail.html.erb
@@ -41,22 +41,6 @@
 
             $(function () {
                 init_activity_KindEditor_data(<%= topic.id%>, null, "87%");
-                showNormalImage('activity_description_<%= topic.id %>');
-                if($("#intro_content_<%= topic.id %>").height() > 810) {
-                    $("#intro_content_show_<%= topic.id %>").show();
-                }
-                $("#intro_content_show_<%= topic.id %>").click(function(){
-                    $("#activity_description_<%= topic.id %>").toggleClass("maxh360");
-                    $("#activity_description_<%= topic.id%>").toggleClass("lh18");
-                    $("#intro_content_show_<%= topic.id %>").hide();
-                    $("#intro_content_hide_<%= topic.id %>").show();
-                });
-                $("#intro_content_hide_<%= topic.id %>").click(function(){
-                    $("#activity_description_<%= topic.id %>").toggleClass("maxh360");
-                    $("#activity_description_<%= topic.id%>").toggleClass("lh18");
-                    $("#intro_content_hide_<%= topic.id %>").hide();
-                    $("#intro_content_show_<%= topic.id %>").show();
-                });
             });
         </script>
         <% if topic %>
diff --git a/app/views/boards/_project_show_detail.html.erb b/app/views/boards/_project_show_detail.html.erb
index 5b266b90c..367f0552c 100644
--- a/app/views/boards/_project_show_detail.html.erb
+++ b/app/views/boards/_project_show_detail.html.erb
@@ -40,22 +40,6 @@
 
             $(function () {
                 init_activity_KindEditor_data(<%= topic.id%>, null, "87%");
-                showNormalImage('activity_description_<%= topic.id %>');
-                if($("#intro_content_<%= topic.id %>").height() > 810) {
-                    $("#intro_content_show_<%= topic.id %>").show();
-                }
-                $("#intro_content_show_<%= topic.id %>").click(function(){
-                    $("#activity_description_<%= topic.id %>").toggleClass("maxh360");
-                    $("#activity_description_<%= topic.id%>").toggleClass("lh18");
-                    $("#intro_content_show_<%= topic.id %>").hide();
-                    $("#intro_content_hide_<%= topic.id %>").show();
-                });
-                $("#intro_content_hide_<%= topic.id %>").click(function(){
-                    $("#activity_description_<%= topic.id %>").toggleClass("maxh360");
-                    $("#activity_description_<%= topic.id%>").toggleClass("lh18");
-                    $("#intro_content_hide_<%= topic.id %>").hide();
-                    $("#intro_content_show_<%= topic.id %>").show();
-                });
             });
         </script>
         <% if topic %>
diff --git a/app/views/courses/_course_activity.html.erb b/app/views/courses/_course_activity.html.erb
index ea41787d5..f0ae33996 100644
--- a/app/views/courses/_course_activity.html.erb
+++ b/app/views/courses/_course_activity.html.erb
@@ -73,22 +73,6 @@
 
             $(function () {
                 init_activity_KindEditor_data(<%= activity.id%>, null, "87%", "<%= activity.class.to_s %>");
-                showNormalImage('activity_description_<%= activity.id %>');
-                if($("#intro_content_<%= activity.id %>").height() > 360) {
-                    $("#intro_content_show_<%= activity.id %>").show();
-                }
-                $("#intro_content_show_<%= activity.id %>").click(function(){
-                    $("#activity_description_<%= activity.id %>").toggleClass("maxh360");
-                    $("#activity_description_<%= activity.id%>").toggleClass("lh18");
-                    $("#intro_content_show_<%= activity.id %>").hide();
-                    $("#intro_content_hide_<%= activity.id %>").show();
-                });
-                $("#intro_content_hide_<%= activity.id %>").click(function(){
-                    $("#activity_description_<%= activity.id %>").toggleClass("maxh360");
-                    $("#activity_description_<%= activity.id%>").toggleClass("lh18");
-                    $("#intro_content_hide_<%= activity.id %>").hide();
-                    $("#intro_content_show_<%= activity.id %>").show();
-                });
             });
         </script>
             <% if activity && activity.course_act%>
diff --git a/app/views/issues/_list.html.erb b/app/views/issues/_list.html.erb
index 58fbda6d6..e47967099 100644
--- a/app/views/issues/_list.html.erb
+++ b/app/views/issues/_list.html.erb
@@ -19,22 +19,6 @@
 
          $(function () {
              init_activity_KindEditor_data(<%= issue.id%>, null, "87%", "<%= issue.class.name %>");
-             showNormalImage('activity_description_<%= issue.id %>');
-             if ($("#intro_content_<%= issue.id %>").height() > 360) {
-                 $("#intro_content_show_<%= issue.id %>").show();
-             }
-             $("#intro_content_show_<%= issue.id %>").click(function () {
-                 $("#activity_description_<%= issue.id %>").toggleClass("maxh360");
-                 $("#activity_description_<%= issue.id%>").toggleClass("lh18");
-                 $("#intro_content_show_<%= issue.id %>").hide();
-                 $("#intro_content_hide_<%= issue.id %>").show();
-             });
-             $("#intro_content_hide_<%= issue.id %>").click(function () {
-                 $("#activity_description_<%= issue.id %>").toggleClass("maxh360");
-                 $("#activity_description_<%= issue.id%>").toggleClass("lh18");
-                 $("#intro_content_hide_<%= issue.id %>").hide();
-                 $("#intro_content_show_<%= issue.id %>").show();
-             });
          });
      </script>
      <%= render :partial => 'users/project_issue', :locals => {:activity => issue, :user_activity_id => issue.id} %>
diff --git a/app/views/messages/reply.js.erb b/app/views/messages/reply.js.erb
index ea848439f..f61de74f0 100644
--- a/app/views/messages/reply.js.erb
+++ b/app/views/messages/reply.js.erb
@@ -5,20 +5,4 @@
 <% elsif @org_subfield %>
     $("#user_activity_<%= @user_activity_id%>").replaceWith("<%= escape_javascript(render :partial => 'organizations/org_subfield_message', :locals => {:activity => @topic,:user_activity_id =>@user_activity_id}) %>");
 <%end%>
-init_activity_KindEditor_data(<%= @user_activity_id %>,"","87%", "UserActivity");
-showNormalImage('activity_description_<%= @user_activity_id %>');
-if($("#intro_content_<%= @user_activity_id %>").height() > 810) {
-    $("#intro_content_show_<%= @user_activity_id %>").show();
-}
-$("#intro_content_show_<%= @user_activity_id %>").click(function(){
-    $("#activity_description_<%= @user_activity_id %>").toggleClass("maxh360");
-    $("#activity_description_<%= @user_activity_id %>").toggleClass("lh18");
-    $("#intro_content_show_<%= @user_activity_id %>").hide();
-    $("#intro_content_hide_<%= @user_activity_id %>").show();
-});
-$("#intro_content_hide_<%= @user_activity_id %>").click(function(){
-    $("#activity_description_<%= @user_activity_id %>").toggleClass("maxh360");
-    $("#activity_description_<%= @user_activity_id %>").toggleClass("lh18");
-    $("#intro_content_hide_<%= @user_activity_id %>").hide();
-    $("#intro_content_show_<%= @user_activity_id %>").show();
-});
\ No newline at end of file
+init_activity_KindEditor_data(<%= @user_activity_id %>,"","87%", "UserActivity");
\ No newline at end of file
diff --git a/app/views/organizations/_org_course_homework.html.erb b/app/views/organizations/_org_course_homework.html.erb
index 41e392b33..de87c5fdf 100644
--- a/app/views/organizations/_org_course_homework.html.erb
+++ b/app/views/organizations/_org_course_homework.html.erb
@@ -92,7 +92,7 @@
             <div class="homepagePostDeadline">匿评截止时间：<%= activity.homework_detail_manual.evaluation_end.to_s %>&nbsp;23:59</div>
         <% end %>
       </div>
-      <div class="homepagePostIntro break_word upload_img list_style maxh360 lh18 table_maxWidth" id="activity_description_<%= user_activity_id%>">
+      <div class="homepagePostIntro break_word upload_img list_style maxh360 table_maxWidth" id="activity_description_<%= user_activity_id%>">
         <div id="intro_content_<%= user_activity_id%>">
           <%= activity.description.html_safe %>
         </div>
@@ -291,4 +291,7 @@
       <div class="cl"></div>
     </div>
   </div>
-</div>
\ No newline at end of file
+</div>
+<script type="text/javascript">
+    $(description_show_hide(<%=user_activity_id %>));
+</script>
\ No newline at end of file
diff --git a/app/views/organizations/_org_course_message.html.erb b/app/views/organizations/_org_course_message.html.erb
index 9ca8f5d10..aec4754a0 100644
--- a/app/views/organizations/_org_course_message.html.erb
+++ b/app/views/organizations/_org_course_message.html.erb
@@ -30,7 +30,7 @@
       <div class="homepagePostDate">
         发帖时间：<%= format_time(activity.created_on) %>
       </div>
-      <div class="homepagePostIntro break_word upload_img list_style maxh360 lh18 table_maxWidth" id="activity_description_<%= user_activity_id%>">
+      <div class="homepagePostIntro break_word upload_img list_style maxh360 table_maxWidth" id="activity_description_<%= user_activity_id%>">
         <div id="intro_content_<%= user_activity_id%>">
           <% if activity.parent_id.nil? %>
               <%= activity.content.to_s.html_safe%>
@@ -138,3 +138,6 @@
     <% end %>
   </div>
 </div>
+<script type="text/javascript">
+    $(description_show_hide(<%=user_activity_id %>));
+</script>
diff --git a/app/views/organizations/_org_course_news.html.erb b/app/views/organizations/_org_course_news.html.erb
index 475a982e5..abb984efe 100644
--- a/app/views/organizations/_org_course_news.html.erb
+++ b/app/views/organizations/_org_course_news.html.erb
@@ -22,7 +22,7 @@
       <div class="homepagePostDate">
         发布时间：<%= format_time(activity.created_on) %>
       </div>
-      <div class="homepagePostIntro break_word upload_img list_style maxh360 lh18 table_maxWidth" id="activity_description_<%= user_activity_id%>">
+      <div class="homepagePostIntro break_word upload_img list_style maxh360 table_maxWidth" id="activity_description_<%= user_activity_id%>">
         <div id="intro_content_<%= user_activity_id%>">
           <%= activity.description.html_safe %>
         </div>
@@ -103,4 +103,7 @@
       <div class="cl"></div>
     </div>
   </div>
-</div>
\ No newline at end of file
+</div>
+<script type="text/javascript">
+    $(description_show_hide(<%=user_activity_id %>));
+</script>
\ No newline at end of file
diff --git a/app/views/organizations/_org_course_poll.html.erb b/app/views/organizations/_org_course_poll.html.erb
index c363909d9..d8907f4a9 100644
--- a/app/views/organizations/_org_course_poll.html.erb
+++ b/app/views/organizations/_org_course_poll.html.erb
@@ -29,7 +29,7 @@
           <div class="homepagePostDate">
             发布时间：<%= format_time(activity.published_at) %>
           </div>
-          <div class="homepagePostIntro break_word upload_img list_style maxh360 lh18 table_maxWidth" id="activity_description_<%= user_activity_id%>">
+          <div class="homepagePostIntro break_word upload_img list_style maxh360 table_maxWidth" id="activity_description_<%= user_activity_id%>">
             <div id="intro_content_<%= user_activity_id%>">
               <%= activity.polls_description.html_safe %>
             </div>
@@ -53,4 +53,7 @@
         <div class="cl"></div>
       </div>
     </div>
-<% end %>
\ No newline at end of file
+<% end %>
+<script type="text/javascript">
+    $(description_show_hide(<%=user_activity_id %>));
+</script>
\ No newline at end of file
diff --git a/app/views/organizations/_org_project_issue.html.erb b/app/views/organizations/_org_project_issue.html.erb
index e29994967..681b604f8 100644
--- a/app/views/organizations/_org_project_issue.html.erb
+++ b/app/views/organizations/_org_project_issue.html.erb
@@ -33,7 +33,7 @@
           <%=format_time(activity.created_on) %>
         </div>
       </div>
-      <div class="homepagePostIntro break_word upload_img list_style maxh360 lh18 table_maxWidth" id="activity_description_<%= user_activity_id%>">
+      <div class="homepagePostIntro break_word upload_img list_style maxh360 table_maxWidth" id="activity_description_<%= user_activity_id%>">
         <div id="intro_content_<%= user_activity_id%>">
           <% if activity.description? %>
               <%= textAreailizable activity, :description, :attachments => activity.attachments %>
@@ -150,3 +150,6 @@
 
   </div>
 </div>
+<script type="text/javascript">
+    $(description_show_hide(<%=user_activity_id %>));
+</script>
diff --git a/app/views/organizations/_org_subfield_message.html.erb b/app/views/organizations/_org_subfield_message.html.erb
index e6bee8000..7ffdfda6b 100644
--- a/app/views/organizations/_org_subfield_message.html.erb
+++ b/app/views/organizations/_org_subfield_message.html.erb
@@ -26,7 +26,7 @@
       <div class="homepagePostDate">
         时间：<%= format_time(activity.created_on) %>
       </div>
-      <div class="homepagePostIntro break_word upload_img list_style maxh360 lh18 table_maxWidth" id="activity_description_<%= user_activity_id%>">
+      <div class="homepagePostIntro break_word upload_img list_style maxh360 table_maxWidth" id="activity_description_<%= user_activity_id%>">
         <div id="intro_content_<%= user_activity_id%>">
           <% if activity.parent_id.nil? %>
               <%= activity.content.to_s.html_safe%>
@@ -115,4 +115,7 @@
     </div>
 
   </div>
-</div>
\ No newline at end of file
+</div>
+<script type="text/javascript">
+    $(description_show_hide(<%=user_activity_id %>));
+</script>
\ No newline at end of file
diff --git a/app/views/organizations/_project_message.html.erb b/app/views/organizations/_project_message.html.erb
index 037dfe61b..cac3c8dec 100644
--- a/app/views/organizations/_project_message.html.erb
+++ b/app/views/organizations/_project_message.html.erb
@@ -26,7 +26,7 @@
       <div class="homepagePostDate">
         时间：<%= format_time(activity.created_on) %>
       </div>
-      <div class="homepagePostIntro break_word upload_img list_style maxh360 lh18 table_maxWidth" id="activity_description_<%= user_activity_id%>">
+      <div class="homepagePostIntro break_word upload_img list_style maxh360 table_maxWidth" id="activity_description_<%= user_activity_id%>">
         <div id="intro_content_<%= user_activity_id%>">
           <% if activity.parent_id.nil? %>
               <%= activity.content.to_s.html_safe%>
@@ -115,4 +115,7 @@
     </div>
 
   </div>
-</div>
\ No newline at end of file
+</div>
+<script type="text/javascript">
+    $(description_show_hide(<%=user_activity_id %>));
+</script>
\ No newline at end of file
diff --git a/app/views/projects/_attachment_acts.html.erb b/app/views/projects/_attachment_acts.html.erb
index bb62eee55..737473e76 100644
--- a/app/views/projects/_attachment_acts.html.erb
+++ b/app/views/projects/_attachment_acts.html.erb
@@ -21,7 +21,7 @@
         发布时间：<%= format_time(activity.created_on) %>
       </div>
       <p class="mt5 break_word"><%= textAreailizable activity, :description %><br/></p>
-      <div class="homepagePostIntro break_word upload_img list_style maxh360 lh18 table_maxWidth" id="activity_description_<%= user_activity_id %>">
+      <div class="homepagePostIntro break_word upload_img list_style maxh360 table_maxWidth" id="activity_description_<%= user_activity_id %>">
         <div id="intro_content_<%= user_activity_id %>">
           <%#= activity.description.html_safe %>
         </div>
@@ -32,4 +32,7 @@
     <div class="cl"></div>
   </div>
 
-</div>
\ No newline at end of file
+</div>
+<script type="text/javascript">
+    $(description_show_hide(<%=user_activity_id %>));
+</script>
\ No newline at end of file
diff --git a/app/views/projects/_project_activities.html.erb b/app/views/projects/_project_activities.html.erb
index 781b65810..2926747e4 100644
--- a/app/views/projects/_project_activities.html.erb
+++ b/app/views/projects/_project_activities.html.erb
@@ -33,22 +33,6 @@
 
             $(function () {
                 init_activity_KindEditor_data(<%= activity.id%>, null, "87%", "<%= activity.class.to_s %>");
-                showNormalImage('activity_description_<%= activity.id %>');
-                if ($("#intro_content_<%= activity.id %>").height() > 810) {
-                    $("#intro_content_show_<%= activity.id %>").show();
-                }
-                $("#intro_content_show_<%= activity.id %>").click(function () {
-                    $("#activity_description_<%= activity.id %>").toggleClass("maxh360");
-                    $("#activity_description_<%= activity.id%>").toggleClass("lh18");
-                    $("#intro_content_show_<%= activity.id %>").hide();
-                    $("#intro_content_hide_<%= activity.id %>").show();
-                });
-                $("#intro_content_hide_<%= activity.id %>").click(function () {
-                    $("#activity_description_<%= activity.id %>").toggleClass("maxh360");
-                    $("#activity_description_<%= activity.id%>").toggleClass("lh18");
-                    $("#intro_content_hide_<%= activity.id %>").hide();
-                    $("#intro_content_show_<%= activity.id %>").show();
-                });
             });
         </script>
         <!--创建-->
diff --git a/app/views/projects/_project_news.html.erb b/app/views/projects/_project_news.html.erb
index 919abc11e..fe35d2698 100644
--- a/app/views/projects/_project_news.html.erb
+++ b/app/views/projects/_project_news.html.erb
@@ -22,7 +22,7 @@
       <div class="homepagePostDate">
         发布时间：<%= format_time(activity.created_on) %>
       </div>
-      <div class="homepagePostIntro break_word upload_img list_style maxh360 lh18 table_maxWidth" id="activity_description_<%= user_activity_id %>">
+      <div class="homepagePostIntro break_word upload_img list_style maxh360 table_maxWidth" id="activity_description_<%= user_activity_id %>">
         <div id="intro_content_<%= user_activity_id %>">
           <%= activity.description.html_safe %>
         </div>
@@ -103,4 +103,7 @@
       <div class="cl"></div>
     </div>
   </div>
-</div>
\ No newline at end of file
+</div>
+<script type="text/javascript">
+    $(description_show_hide(<%=user_activity_id %>));
+</script>
\ No newline at end of file
diff --git a/app/views/users/_course_homework.html.erb b/app/views/users/_course_homework.html.erb
index 33b61923e..17d2ace69 100644
--- a/app/views/users/_course_homework.html.erb
+++ b/app/views/users/_course_homework.html.erb
@@ -92,7 +92,7 @@
             <div class="homepagePostDeadline">匿评截止时间：<%= activity.homework_detail_manual.evaluation_end.to_s %>&nbsp;23:59</div>
         <% end %>
       </div>
-      <div class="homepagePostIntro break_word upload_img list_style maxh360 lh18 table_maxWidth" id="activity_description_<%= user_activity_id%>">
+      <div class="homepagePostIntro break_word upload_img list_style maxh360 table_maxWidth" id="activity_description_<%= user_activity_id%>">
         <div id="intro_content_<%= user_activity_id%>">
           <%= activity.description.html_safe %>
         </div>
@@ -298,4 +298,7 @@
       <div class="cl"></div>
     </div>
   </div>
-</div>
\ No newline at end of file
+</div>
+<script type="text/javascript">
+  $(description_show_hide(<%=user_activity_id %>));
+</script>
\ No newline at end of file
diff --git a/app/views/users/_course_message.html.erb b/app/views/users/_course_message.html.erb
index 22a4bcf57..562427c43 100644
--- a/app/views/users/_course_message.html.erb
+++ b/app/views/users/_course_message.html.erb
@@ -30,7 +30,7 @@
       <div class="homepagePostDate">
         发帖时间：<%= format_time(activity.created_on) %>
       </div>
-      <div class="homepagePostIntro break_word upload_img list_style maxh360 lh18 table_maxWidth" id="activity_description_<%= user_activity_id%>">
+      <div class="homepagePostIntro break_word upload_img list_style maxh360 table_maxWidth" id="activity_description_<%= user_activity_id%>">
         <div id="intro_content_<%= user_activity_id%>">
           <% if activity.parent_id.nil? %>
               <%= activity.content.to_s.html_safe%>
@@ -159,3 +159,6 @@
    <% end %>
   </div>
 </div>
+<script type="text/javascript">
+    $(description_show_hide(<%=user_activity_id %>));
+</script>
diff --git a/app/views/users/_course_news.html.erb b/app/views/users/_course_news.html.erb
index 475a982e5..abb984efe 100644
--- a/app/views/users/_course_news.html.erb
+++ b/app/views/users/_course_news.html.erb
@@ -22,7 +22,7 @@
       <div class="homepagePostDate">
         发布时间：<%= format_time(activity.created_on) %>
       </div>
-      <div class="homepagePostIntro break_word upload_img list_style maxh360 lh18 table_maxWidth" id="activity_description_<%= user_activity_id%>">
+      <div class="homepagePostIntro break_word upload_img list_style maxh360 table_maxWidth" id="activity_description_<%= user_activity_id%>">
         <div id="intro_content_<%= user_activity_id%>">
           <%= activity.description.html_safe %>
         </div>
@@ -103,4 +103,7 @@
       <div class="cl"></div>
     </div>
   </div>
-</div>
\ No newline at end of file
+</div>
+<script type="text/javascript">
+    $(description_show_hide(<%=user_activity_id %>));
+</script>
\ No newline at end of file
diff --git a/app/views/users/_course_poll.html.erb b/app/views/users/_course_poll.html.erb
index 48ab5d2f2..6ecd72cfb 100644
--- a/app/views/users/_course_poll.html.erb
+++ b/app/views/users/_course_poll.html.erb
@@ -29,7 +29,7 @@
       <div class="homepagePostDate">
         发布时间：<%= format_time(activity.published_at) %>
       </div>
-      <div class="homepagePostIntro break_word upload_img list_style maxh360 lh18 table_maxWidth" id="activity_description_<%= user_activity_id%>">
+      <div class="homepagePostIntro break_word upload_img list_style maxh360 table_maxWidth" id="activity_description_<%= user_activity_id%>">
         <div id="intro_content_<%= user_activity_id%>">
           <%= activity.polls_description.html_safe %>
         </div>
@@ -53,4 +53,7 @@
     <div class="cl"></div>
   </div>
 </div>
-<% end %>
\ No newline at end of file
+<% end %>
+<script type="text/javascript">
+    $(description_show_hide(<%=user_activity_id %>));
+</script>
\ No newline at end of file
diff --git a/app/views/users/_project_issue.html.erb b/app/views/users/_project_issue.html.erb
index cd9704186..a83258737 100644
--- a/app/views/users/_project_issue.html.erb
+++ b/app/views/users/_project_issue.html.erb
@@ -45,7 +45,7 @@
           <%=format_time(activity.created_on) %>
         </div>
       </div>
-      <div class="homepagePostIntro break_word upload_img list_style maxh360 lh18 table_maxWidth" id="activity_description_<%= user_activity_id%>">
+      <div class="homepagePostIntro break_word upload_img list_style maxh360 table_maxWidth" id="activity_description_<%= user_activity_id%>">
         <div id="intro_content_<%= user_activity_id%>">
           <% if activity.description? %>
               <%= textAreailizable activity, :description, :attachments => activity.attachments %>
@@ -163,3 +163,6 @@
 
   </div>
 </div>
+<script type="text/javascript">
+    $(description_show_hide(<%=user_activity_id %>));
+</script>
diff --git a/app/views/users/_project_message.html.erb b/app/views/users/_project_message.html.erb
index 5a9f7e398..d248eb845 100644
--- a/app/views/users/_project_message.html.erb
+++ b/app/views/users/_project_message.html.erb
@@ -31,7 +31,7 @@
       <div class="homepagePostDate">
         发帖时间：<%= format_time(activity.created_on) %>
       </div>
-      <div class="homepagePostIntro break_word upload_img list_style maxh360 lh18 table_maxWidth" id="activity_description_<%= user_activity_id%>">
+      <div class="homepagePostIntro break_word upload_img list_style maxh360 table_maxWidth" id="activity_description_<%= user_activity_id%>">
         <div id="intro_content_<%= user_activity_id%>">
           <% if activity.parent_id.nil? %>
               <%= activity.content.to_s.html_safe%>
@@ -146,7 +146,8 @@
       </div>
       <div class="cl"></div>
     </div>
-
-
   </div>
-</div>
\ No newline at end of file
+</div>
+<script type="text/javascript">
+    $(description_show_hide(<%=user_activity_id %>));
+</script>
\ No newline at end of file
diff --git a/app/views/users/_user_activities.html.erb b/app/views/users/_user_activities.html.erb
index bb1a42f58..2941394da 100644
--- a/app/views/users/_user_activities.html.erb
+++ b/app/views/users/_user_activities.html.erb
@@ -40,22 +40,6 @@
 
             $(function() {
                 init_activity_KindEditor_data(<%= user_activity.id%>, null, "87%", "<%=user_activity.class.to_s%>");
-                showNormalImage('activity_description_<%= user_activity.id %>');
-                if($("#intro_content_<%= user_activity.id %>").height() > 360) {
-                    $("#intro_content_show_<%= user_activity.id %>").show();
-                }
-                $("#intro_content_show_<%= user_activity.id %>").click(function(){
-                    $("#activity_description_<%= user_activity.id %>").toggleClass("maxh360");
-                    $("#activity_description_<%= user_activity.id%>").toggleClass("lh18");
-                    $("#intro_content_show_<%= user_activity.id %>").hide();
-                    $("#intro_content_hide_<%= user_activity.id %>").show();
-                });
-                $("#intro_content_hide_<%= user_activity.id %>").click(function(){
-                    $("#activity_description_<%= user_activity.id %>").toggleClass("maxh360");
-                    $("#activity_description_<%= user_activity.id%>").toggleClass("lh18");
-                    $("#intro_content_hide_<%= user_activity.id %>").hide();
-                    $("#intro_content_show_<%= user_activity.id %>").show();
-                });
             });
         </script>
         <% unless user_activity.act_type == "ProjectCreateInfo" %>
diff --git a/app/views/users/_user_blog.html.erb b/app/views/users/_user_blog.html.erb
index c1219eb25..50bddb65f 100644
--- a/app/views/users/_user_blog.html.erb
+++ b/app/views/users/_user_blog.html.erb
@@ -28,7 +28,7 @@
       <div class="homepagePostDate">
         发布时间：<%= format_time(activity.created_on) %>
       </div>
-      <div class="homepagePostIntro break_word upload_img list_style maxh360 lh18 table_maxWidth" id="activity_description_<%= user_activity_id%>">
+      <div class="homepagePostIntro break_word upload_img list_style maxh360 table_maxWidth" id="activity_description_<%= user_activity_id%>">
         <div id="intro_content_<%= user_activity_id%>">
           <%= activity.content.html_safe %>
         </div>
@@ -116,4 +116,7 @@
     </div>
     <% end %>
   </div>
-</div>
\ No newline at end of file
+</div>
+<script type="text/javascript">
+    $(description_show_hide(<%=user_activity_id %>));
+</script>
\ No newline at end of file
diff --git a/app/views/users/_user_homework_detail.html.erb b/app/views/users/_user_homework_detail.html.erb
index b644d562b..af0db004f 100644
--- a/app/views/users/_user_homework_detail.html.erb
+++ b/app/views/users/_user_homework_detail.html.erb
@@ -95,7 +95,7 @@
             </div>
         <% end %>
       </div>
-      <div class="homepagePostIntro break_word upload_img list_style maxh360 lh18 table_maxWidth" id="homework_description_<%= homework_common.id%>">
+      <div class="homepagePostIntro break_word upload_img list_style maxh360 table_maxWidth" id="homework_description_<%= homework_common.id%>">
         <div id="intro_content_<%= homework_common.id%>">
           <%= homework_common.description.html_safe %>
         </div>
@@ -301,4 +301,7 @@
       <div class="cl"></div>
     </div>
   </div>
-</div><!----HomeWork end-->
\ No newline at end of file
+</div><!----HomeWork end-->
+<script type="text/javascript">
+    $(homework_description_show_hide(<%=homework_common.id %>));
+</script>
\ No newline at end of file
diff --git a/app/views/users/_user_homework_list.html.erb b/app/views/users/_user_homework_list.html.erb
index f00900488..efe9216df 100644
--- a/app/views/users/_user_homework_list.html.erb
+++ b/app/views/users/_user_homework_list.html.erb
@@ -18,22 +18,6 @@
     <script type="text/javascript">
         $(function() {
             init_activity_KindEditor_data(<%= homework_common.id%>, null, "87%", "<%=homework_common.class.to_s%>");
-            showNormalImage('homework_description_<%= homework_common.id%>');
-            if($("#intro_content_<%= homework_common.id%>").height() > 360) {
-                $("#intro_content_show_<%= homework_common.id%>").show();
-            }
-            $("#intro_content_show_<%= homework_common.id%>").click(function(){
-                $("#homework_description_<%= homework_common.id%>").toggleClass("maxh360");
-                $("#homework_description_<%= homework_common.id%>").toggleClass("lh18");
-                $("#intro_content_show_<%= homework_common.id%>").hide();
-                $("#intro_content_hide_<%= homework_common.id%>").show();
-            });
-            $("#intro_content_hide_<%= homework_common.id%>").click(function(){
-                $("#homework_description_<%= homework_common.id%>").toggleClass("maxh360");
-                $("#homework_description_<%= homework_common.id%>").toggleClass("lh18");
-                $("#intro_content_hide_<%= homework_common.id%>").hide();
-                $("#intro_content_show_<%= homework_common.id%>").show();
-            });
         });
 
         function expand_reply(container,btnid){
diff --git a/public/javascripts/application.js b/public/javascripts/application.js
index a0edf85c1..193b358dc 100644
--- a/public/javascripts/application.js
+++ b/public/javascripts/application.js
@@ -5,6 +5,41 @@
 /* Redmine - project management software
    Copyright (C) 2006-2013  Jean-Philippe Lang */
 
+//动态高度控制
+function description_show_hide(id){
+    showNormalImage('activity_description_'+id);
+    if($("#intro_content_"+id).height() > 810) {
+        $("#intro_content_show_"+id).show();
+    }
+    $("#intro_content_show_"+id).click(function(){
+        $("#activity_description_"+id).toggleClass("maxh360");
+        $("#intro_content_show_"+id).hide();
+        $("#intro_content_hide_"+id).show();
+    });
+    $("#intro_content_hide_"+id).click(function(){
+        $("#activity_description_"+id).toggleClass("maxh360");
+        $("#intro_content_hide_"+id).hide();
+        $("#intro_content_show_"+id).show();
+    });
+}
+
+function homework_description_show_hide(id){
+    showNormalImage('homework_description_'+id);
+    if($("#intro_content_"+id).height() > 810) {
+        $("#intro_content_show_"+id).show();
+    }
+    $("#intro_content_show_"+id).click(function(){
+        $("#homework_description_"+id).toggleClass("maxh360");
+        $("#intro_content_show_"+id).hide();
+        $("#intro_content_hide_"+id).show();
+    });
+    $("#intro_content_hide_"+id).click(function(){
+        $("#homework_description_"+id).toggleClass("maxh360");
+        $("#intro_content_hide_"+id).hide();
+        $("#intro_content_show_"+id).show();
+    });
+}
+
 function cleanArray (actual){
   var newArray = new Array();
     for (var i = 0; i< actual.length; i++){