diff --git a/media/css/seahub.css b/media/css/seahub.css
index 3651e41bb7..e707de1c42 100644
--- a/media/css/seahub.css
+++ b/media/css/seahub.css
@@ -928,7 +928,9 @@ ul.with-bg li {
     color:#666;
     margin-left:5px;
 }
-.lsch, .lsch-encrypted, .file-diff {
+.lsch,
+.lsch-encrypted,
+.file-diff {
     font-size:12px;
     font-weight:normal;
     color:#666;
@@ -1383,13 +1385,27 @@ ul.with-bg li {
 /* text file diff */
 div.diff-desc { margin: 10px 0; }
 div.diff-desc p { margin: 10px 0; }
-#text-diff-output table { margin-top: 20px; border: 1px solid gray; }
-#text-diff-output thead { border: 1px solid gray; }
-#text-diff-output th { background-color: #EED; text-align: center; }
-#text-diff-output th, #text-diff-output td { border-bottom: none; }
-#text-diff-output tr.hl { background-color: #afcde8; }/*highlight*/
 
-.diff_header { background-color: #EED; text-align: center; }
-.diff_add { background-color: #DFD; }
-.diff_sub { background-color: #FDD; }
-.diff_chg { background-color: #FD8; }
+#text-diff-output table {
+    margin-top: 20px;
+    border: 1px solid gray;
+}
+
+#text-diff-output tr th {
+    background-color: #EED;
+    text-align: center;
+}
+#text-diff-output th,
+#text-diff-output td {
+    border-bottom: none;
+}
+#text-diff-output tr.hl {
+    background-color: #afcde8;  /*highlight*/
+}
+.diff-header {
+    background-color: #EED;
+    text-align: center;
+}
+.diff-add { background-color: #DFD; }
+.diff-sub { background-color: #FDD; }
+.diff-chg { background-color: #FD8; }
diff --git a/templates/repo_view_file.html b/templates/repo_view_file.html
index daa5707325..52618997a4 100644
--- a/templates/repo_view_file.html
+++ b/templates/repo_view_file.html
@@ -82,7 +82,8 @@
     {% if not view_history %}
     <div id="file-commit-info">
         <div class="latest-commit ovhd">
-            <p class="latest-commit-info fleft">{% avatar latest_contributor 20 %} <a href="{% url 'user_profile' latest_contributor %}" class="name">{{ latest_contributor|email2nickname }}</a> <span class="time">{{ last_modified|translate_commit_time}}</span><span> 做了最新修改</span>
+            <p class="latest-commit-info fleft">
+                {% avatar latest_contributor 20 %} <a href="{% url 'user_profile' latest_contributor %}" class="name">{{ latest_contributor|email2nickname }}</a> <span class="time">{{ last_modified|translate_commit_time}}</span><span> 做了最新修改</span>
                 {% if filetype == 'Text' or filetype == 'Markdown' %}
                 {% if last_commit_id %}
                 <span><a class="file-diff" href="{% url 'text_diff' repo.id %}?p={{path|urlencode}}&commit={{last_commit_id}}">详情</a></span>
diff --git a/templates/snippets/file_view_js.html b/templates/snippets/file_view_js.html
index dd30d97da3..c57589bd43 100644
--- a/templates/snippets/file_view_js.html
+++ b/templates/snippets/file_view_js.html
@@ -14,6 +14,3 @@
 {% if filetype == 'Markdown' %}
 <script type="text/javascript" src="{{MEDIA_URL}}js/showdown.js"></script>
 {% endif %}
-
-{% if filetype == 'Text' or filetype == 'Markdown' %}
-{% endif %}
diff --git a/templates/text_diff.html b/templates/text_diff.html
index 77277eefc4..3a7030b3f4 100644
--- a/templates/text_diff.html
+++ b/templates/text_diff.html
@@ -3,7 +3,7 @@
 {% load url from future %}
 
 {% block main_panel %}
-<h2>文件修改详情</h2>
+<h3>文件修改详情</h3>
 <div class="diff-desc">
     <p class="path">
         文件路径：
@@ -23,16 +23,14 @@
 </div>
 {% else %}
 <div id="text-diff-output">
-<table rules="group">
-    <thead>
+<table>
+    <tr>
         <th width="3%"></th>
         <th width="47%"> 修改前 </th>
         <th width="3%"></th>
         <th width="47%"> 修改后 </th>
-    </thead>
-    <tbody>
-        {{ diff_result_table|safe }}
-    </tbody>
+    </tr>
+    {{ diff_result_table|safe }}
 </table>
 </div>
 {% endif %}
diff --git a/thirdpart/seaserv/htmldiff.py b/thirdpart/seaserv/htmldiff.py
index 48c4a4a8e2..011a11e813 100644
--- a/thirdpart/seaserv/htmldiff.py
+++ b/thirdpart/seaserv/htmldiff.py
@@ -1875,17 +1875,21 @@ class HtmlDiff(object):
 
         cls = ''
         if '\0+' in text:
-            cls = 'diff_add'
+            cls = 'diff-add'
         elif '\0-' in text:
-            cls = 'diff_sub'
+            cls = 'diff-sub'
         elif '\0^' in text:
-            cls = 'diff_chg'
+            cls = 'diff-chg'
+
+        text = text.replace('\0+', '').replace('\0-', ''). \
+               replace('\0^', '').replace('\1', ''). \
+               replace('\t','&nbsp;')
 
         if cls:
-            return '<td class="diff_header">%s</td><td class=%s>%s</td>' \
+            return '<td class="diff-header">%s</td><td class=%s>%s</td>' \
                % (linenum,cls,text)
         else:
-            return '<td class="diff_header">%s</td><td>%s</td>' \
+            return '<td class="diff-header">%s</td><td>%s</td>' \
                % (linenum,text)
 
     def _make_prefix(self):
@@ -2004,11 +2008,13 @@ class HtmlDiff(object):
 
         data_rows = ''.join(s)
 
-        return data_rows.replace('\0+',''). \
-                     replace('\0-',''). \
-                     replace('\0^',''). \
-                     replace('\1',''). \
-                     replace('\t','&nbsp;')
+        return data_rows
+
+        # return data_rows.replace('\0+',''). \
+        #              replace('\0-',''). \
+        #              replace('\0^',''). \
+        #              replace('\1',''). \
+        #              replace('\t','&nbsp;')
 
 del re