diff --git a/module/action/lang/en.php b/module/action/lang/en.php
index a59ced7c51..ccb7f4a0a5 100644
--- a/module/action/lang/en.php
+++ b/module/action/lang/en.php
@@ -78,7 +78,7 @@ $lang->action->desc->canceled     = '$date, canceled by <strong>$actor</strong>.
 $lang->action->desc->svncommited  = '$date, <strong>$actor</strong> commited to svn，revision is <strong>#$extra</strong>.' . "\n";
 $lang->action->desc->finished     = '$date, finished by <strong>$actor</strong>.';
 $lang->action->desc->diff1        = 'changed <strong><i>%s</i></strong>, old is "%s", new is "%s".<br />';
-$lang->action->desc->diff2        = 'changed <strong><i>%s</i></strong>, the diff is：<blockquote>%s</blockquote>' . "\n";
+$lang->action->desc->diff2        = 'changed <strong><i>%s</i></strong>, the diff is:' . "\n" . "<blockquote>%s</blockquote>" . "\n<button onclick='toggleStripTags(this)'>Change DIFF</button><div id='hideDiff' class='hidden'>%s</div>";
 $lang->action->desc->diff3        = "changed file's name %s to %s.";
 
 /* The action labels. */
diff --git a/module/action/lang/zh-cn.php b/module/action/lang/zh-cn.php
index 5180929f8c..d9a3c04d62 100644
--- a/module/action/lang/zh-cn.php
+++ b/module/action/lang/zh-cn.php
@@ -78,7 +78,7 @@ $lang->action->desc->canceled     = '$date, 由 <strong>$actor</strong> 取消
 $lang->action->desc->svncommited  = '$date, 由 <strong>$actor</strong> 提交代码，版本为<strong>#$extra</strong>。' . "\n";
 $lang->action->desc->finished     = '$date, 由 <strong>$actor</strong> 完成。' . "\n";
 $lang->action->desc->diff1        = '修改了 <strong><i>%s</i></strong>，旧值为 "%s"，新值为 "%s"。<br />' . "\n";
-$lang->action->desc->diff2        = '修改了 <strong><i>%s</i></strong>，区别为：' . "\n" . '<blockquote>%s</blockquote>' . "\n";
+$lang->action->desc->diff2        = '修改了 <strong><i>%s</i></strong>，区别为：' . "\n" . "<blockquote>%s</blockquote>" . "\n<button onclick='toggleStripTags(this)'>切换DIFF</button><div id='hideDiff' class='hidden'>%s</div>";
 $lang->action->desc->diff3        = '将文件名 %s 改为 %s 。' . "\n";
 
 /* 用来显示动态信息。*/
diff --git a/module/action/model.php b/module/action/model.php
index 092ac5d4a4..9688628a21 100644
--- a/module/action/model.php
+++ b/module/action/model.php
@@ -603,11 +603,12 @@ class actionModel extends model
             $history->fieldLabel = str_pad($history->fieldLabel, $maxLength, $this->lang->action->label->space);
             if($history->diff != '')
             {
-                $history->diff = str_replace(array('<ins>', '</ins>', '<del>', '</del>'), array('[ins]', '[/ins]', '[del]', '[/del]'), $history->diff);
-                $history->diff = $history->field != 'subversion' ? htmlspecialchars($history->diff) : $history->diff;   // Keep the diff link.
-                $history->diff = str_replace(array('[ins]', '[/ins]', '[del]', '[/del]'), array('<ins>', '</ins>', '<del>', '</del>'), $history->diff);
-                $history->diff = nl2br($history->diff);
-                printf($this->lang->action->desc->diff2, $history->fieldLabel, $history->diff);
+                $history->diff      = str_replace(array('<ins>', '</ins>', '<del>', '</del>'), array('[ins]', '[/ins]', '[del]', '[/del]'), $history->diff);
+                $history->diff      = $history->field != 'subversion' ? htmlspecialchars($history->diff) : $history->diff;   // Keep the diff link.
+                $history->diff      = str_replace(array('[ins]', '[/ins]', '[del]', '[/del]'), array('<ins>', '</ins>', '<del>', '</del>'), $history->diff);
+                $history->diff      = nl2br($history->diff);
+                $history->noTagDiff = preg_replace('/&lt;\/?([a-z][a-z0-9]*)[^\/]*\/?&gt;/Ui', '', $history->diff);
+                printf($this->lang->action->desc->diff2, $history->fieldLabel, $history->noTagDiff, $history->diff);
             }
             else
             {
diff --git a/module/common/view/action.html.php b/module/common/view/action.html.php
index 8c62023968..f5c83e1d2a 100644
--- a/module/common/view/action.html.php
+++ b/module/common/view/action.html.php
@@ -14,6 +14,15 @@ function switchChange(historyID,type)
         $('#changeBox' + historyID).hide();
     }
 }
+
+function toggleStripTags(obj)
+{
+    var boxObj  = $(obj).parent();
+    var oldDiff = $(boxObj).find('blockquote').html();
+    var newDiff = $(boxObj).find('#hideDiff').html();
+    $(boxObj).find('blockquote').html(newDiff);
+    $(boxObj).find('#hideDiff').html(oldDiff);
+}
 </script>
 <?php if($extView = $this->getExtViewFile(__FILE__)){include $extView; return helper::cd();}?>
 <script src='<?php echo $jsRoot;?>jquery/reverseorder/raw.js' type='text/javascript'></script>