diff --git a/app/views/boards/_course_show.html.erb b/app/views/boards/_course_show.html.erb
index ce3dd2091..5dde6c460 100644
--- a/app/views/boards/_course_show.html.erb
+++ b/app/views/boards/_course_show.html.erb
@@ -58,18 +58,23 @@
 
               <div class="cl"></div>
 
-              <p  id="contentmessage<%=topic.id %>" class="project_board_content break_word">
-                <%= topic.content %>
-              </p>
-              <% if topic.content.size > 300 %>
-                  <p>
-                    <label id="expend_more_information<%= topic.id%>"  onclick="show_more_reply('#contentmessage<%=topic.id %>','#expend_more_information<%= topic.id%>','#arrow<%=topic.id%>');"  value="show_more">[展开]</label>
+              <script>
+                  $(function(){if($("#contentmessage<%=topic.id %>").height()>55){$("#project_show_<%= topic.id%>").show();}});
+              </script>
+              <div  class="project_board_content break_word" id="content_<%=topic.id%>">
+                <div id="contentmessage<%=topic.id %>" class="upload_img">
+                  <%= topic.content %>
+                </div>
+              </div>
+
+
+              <p style="display: none" id="project_show_<%= topic.id%>">
+                <label id="expend_more_information<%= topic.id%>"  onclick="show_more_reply('#content_<%=topic.id%>','#expend_more_information<%= topic.id%>','#arrow<%=topic.id%>');"  value="show_more">[展开]</label>
                 <span class="g-arr-down">
                     <img id="arrow<%=topic.id%>" src="/images/jiantou.jpg" width="12" height="6" />
                 </span>
 
-                  </p>
-              <% end %>
+              </p>
               <%= link_to_attachments_course topic, :author => false %>
 
               <%= l(:label_activity_time)%>：&nbsp;&nbsp;<%= format_time topic.created_on %>
diff --git a/app/views/boards/_project_show.html.erb b/app/views/boards/_project_show.html.erb
index a20bed3fd..8a9ffd990 100644
--- a/app/views/boards/_project_show.html.erb
+++ b/app/views/boards/_project_show.html.erb
@@ -32,6 +32,7 @@
   <p class="c_dark mb5">讨论区共有<span class="c_orange"><%= @topic_count %></span>个帖子</p>
 <% if @topics.any? %>
       		<% @topics.each do |topic| %>
+
           <div class="talkmain_box" style="border:none; margin-bottom:0; border-bottom: 1px dashed #d9d9d9;">
             <%= link_to image_tag(url_to_avatar(topic.author), :width=>"42",:height=>"42"), user_path(topic.author),:class =>'talkmain_pic fl' %>
             <div class="talkmain_txt fl mt5">
@@ -57,19 +58,24 @@
                   <a href="javascript:void(0)" class="talk_up fr c_red" style="margin-right: 10px;"><%= l(:label_board_sticky)%></a>
               <% end %>
               <div class="cl"></div>
+              <script>
+                  $(function(){if($("#contentmessage<%=topic.id %>").height()>55){$("#project_show_<%= topic.id%>").show();}});
+              </script>
+              <div  class="project_board_content break_word" id="content_<%=topic.id%>">
+                <div id="contentmessage<%=topic.id %>" class="upload_img">
+                  <%= topic.content %>
+                </div>
+              </div>
+
 
-               <p  id="contentmessage<%=topic.id %>" class="project_board_content break_word">
-                 <%= topic.content %>
-               </p>
-              <% if topic.content.size > 300 %>
-              <p>
-                <label id="expend_more_information<%= topic.id%>"  onclick="show_more_reply('#contentmessage<%=topic.id %>','#expend_more_information<%= topic.id%>','#arrow<%=topic.id%>');"  value="show_more">[展开]</label>
+              <p style="display: none" id="project_show_<%= topic.id%>">
+                <label id="expend_more_information<%= topic.id%>"  onclick="show_more_reply('#content_<%=topic.id%>','#expend_more_information<%= topic.id%>','#arrow<%=topic.id%>');"  value="show_more">[展开]</label>
                 <span class="g-arr-down">
                     <img id="arrow<%=topic.id%>" src="/images/jiantou.jpg" width="12" height="6" />
                 </span>
 
               </p>
-               <% end %>
+
             <%= link_to_attachments_course topic, :author => false %>
 
               <%= l(:label_activity_time)%>：&nbsp;&nbsp;<%= format_time topic.created_on %>
@@ -177,6 +183,7 @@
                <% end %>
            <% end %>
         </div>
+
        <% end %>
   <% else %>
       <p class="nodata"><%= l(:label_no_data) %></p>
diff --git a/app/views/boards/show.html.erb b/app/views/boards/show.html.erb
index 9faf07b9a..2e736bdf7 100644
--- a/app/views/boards/show.html.erb
+++ b/app/views/boards/show.html.erb
@@ -24,7 +24,14 @@
 
 <script type="text/javascript">//侧导航
 
-
+window.onload = function () {
+    $("p[aa='bb']").each(function() {
+        alert((this.offsetHeight == '55'));
+        if(this.offsetHeight == '55') {
+            this.next.style.dispaly="block";
+        }
+    })
+}
 
 function show_newtalk()
 {
diff --git a/public/stylesheets/leftside.css b/public/stylesheets/leftside.css
index 6020903d3..c7905fb80 100644
--- a/public/stylesheets/leftside.css
+++ b/public/stylesheets/leftside.css
@@ -45,6 +45,7 @@ a:hover.subnav_green{ background:#14ad5a;}
 /*简介*/
 .project_intro{ width:220px; padding:10px; background:#fff; margin-top:10px; padding-top:5px; color:#6d6d6d; line-height:1.9;}
 .course_description{max-height: 112px;overflow:hidden; word-break: break-all;word-wrap: break-word;}
+.project_board_content{overflow: hidden;max-height: 55px;word-break: break-all;word-wrap: break-word;}
 .course_description_none{max-height: none;}
 .lg-foot{ border:1px solid #e8eef2; color: #929598; text-align:center; width:220px; height:23px; cursor:pointer;display: none;}
 .lg-foot:hover{ color:#787b7e; border:1px solid #d4d4d4;}