diff --git a/module/common/lang/en.php b/module/common/lang/en.php
index c5fc7120b6..e76267ae06 100644
--- a/module/common/lang/en.php
+++ b/module/common/lang/en.php
@@ -53,6 +53,8 @@ $lang->switchDisplay= '[Toggle Show]';
 $lang->switchHelp   = 'Toggle Help';
 $lang->addFiles     = 'Add Files';
 $lang->files        = 'Files ';
+$lang->unfold       = '+';
+$lang->fold         = '-';
 
 $lang->selectAll    = 'Select All';
 $lang->notFound     = 'Sorry, the object not found.';
diff --git a/module/common/lang/zh-cn.php b/module/common/lang/zh-cn.php
index f5841bf2b9..ab34ec0ff5 100644
--- a/module/common/lang/zh-cn.php
+++ b/module/common/lang/zh-cn.php
@@ -53,6 +53,8 @@ $lang->switchDisplay= '[切换显示]';
 $lang->switchHelp   = '切换帮助';
 $lang->addFiles     = '上传了附件 ';
 $lang->files        = '附件 ';
+$lang->unfold       = '+';
+$lang->fold         = '-';
 
 $lang->selectAll    = '全选';
 $lang->notFound     = '抱歉，您访问的对象并不存在！';
@@ -110,6 +112,7 @@ $lang->my->menu->project  = '我的项目|my|project|';
 $lang->my->menu->profile  = array('link' => '我的档案|my|profile|', 'alias' => 'editprofile');
 $lang->todo->menu         = $lang->my->menu;
 
+
 /* 产品视图设置。*/
 $lang->product->menu->list   = '%s';
 $lang->product->menu->story  = array('link' => '需求列表|product|browse|productID=%s',     'subModule' => 'story');
diff --git a/module/common/view/action.html.php b/module/common/view/action.html.php
index 7bbcd71172..9408bd8827 100644
--- a/module/common/view/action.html.php
+++ b/module/common/view/action.html.php
@@ -1,8 +1,23 @@
+<script language='Javascript'>
+var fold   = '<?php echo $lang->fold;?>';
+var unfold = '<?php echo $lang->unfold;?>';
+function switchHistoryDisplay(historyID,type)
+{
+    if(type == unfold){
+        $('#switchButton' + historyID).val(fold);
+        $('#historyBox' + historyID).show();
+    }
+    else{
+        $('#switchButton' + historyID).val(unfold);
+        $('#historyBox' + historyID).hide();
+    }
+}
+</script>
 <?php if($extView = $this->getExtViewFile(__FILE__)){include $extView; return helper::cd();}?>
 <script src='<?php echo $jsRoot;?>jquery/reverseorder/raw.js' type='text/javascript'></script>
 <?php if(!isset($actionTheme)) $actionTheme = 'fieldset';?>
 <?php if($actionTheme == 'fieldset'):?>
-<div>
+<div id='actionbox'>
 <fieldset>
   <legend>
     <span onclick='$("#historyItem li").reverseOrder();' class='hand'> <?php echo $lang->history . $lang->reverse;?></span>
@@ -26,9 +41,12 @@
       if(strpos($action->actor, ':') !== false) $action->actor = substr($action->actor, strpos($action->actor, ':') + 1);
       ?>
       <span><?php $this->action->printAction($action);?>
+      <?php if(!empty($action->history)) echo html::commonButton($lang->unfold, "id=switchButton$i onclick=switchHistoryDisplay($i,this.value)");?>
       <?php if(!empty($action->comment) or !empty($action->history)):?>
       <?php if(!empty($action->comment)) echo "<div class='history'>";?>
-        <div class='changes'><?php echo $this->action->printChanges($action->objectType, $action->history);?></div>
+        <?php echo "<span id='historyBox$i' class='hidden'>";?>
+          <div class='changes'><?php echo $this->action->printChanges($action->objectType, $action->history);?></div>
+        </span>
         <?php if($action->comment and $action->history) echo '<br />'; echo nl2br($action->comment);?>
       <?php if(!empty($action->comment)) echo "</div>";?>
       <?php endif;?>
diff --git a/module/my/control.php b/module/my/control.php
index 114a76de0f..214974d80a 100644
--- a/module/my/control.php
+++ b/module/my/control.php
@@ -79,7 +79,7 @@ class my extends control
     }
 
     /* 用户的bug列表。*/
-    public function bug($type = 'assignToMe', $orderBy = 'id_desc', $recTotal = 0, $recPerPage = 20, $pageID = 1)
+    public function bug($type = 'assigntome', $orderBy = 'id_desc', $recTotal = 0, $recPerPage = 20, $pageID = 1)
     {
         /* 登记session，加载语言。*/
         $this->session->set('bugList', $this->app->getURI(true));
diff --git a/www/theme/default/style.css b/www/theme/default/style.css
index bd3af3e3a6..d2e6e97123 100644
--- a/www/theme/default/style.css
+++ b/www/theme/default/style.css
@@ -267,6 +267,7 @@ table.tablesorter thead tr .headerSortDown {background-image: url(./images/table
 /* Other items. */
 .history, .changes {border:1px solid #ccc; background:#f2f2f2; padding:10px; margin-top:10px; margin-bottom:10px; color:#333; line-height:20px;}
 .history  .changes {border:none; margin:0; padding:0}
+#actionbox .button-c {font-size:9px; height:20px; padding:0 5px 0 5px}
 .content {font-size:14px; padding:10px}
 .content p {margin:0}
 .roadmap {width:200px; margin:10px auto 10px auto; padding:10px; border:1px solid gray;}