diff --git a/GoogleAnalytics/Plugin.php b/GoogleAnalytics/Plugin.php
index a5da974..d6d52db 100644
--- a/GoogleAnalytics/Plugin.php
+++ b/GoogleAnalytics/Plugin.php
@@ -63,6 +63,6 @@ class GoogleAnalytics_Plugin implements Typecho_Plugin_Interface
     public static function render()
     {
         $account = Typecho_Widget::widget('Widget_Options')->plugin('GoogleAnalytics')->account;
-        echo "<script type=\"text/javascript\">var _gaq = _gaq || [];_gaq.push(['_setAccount', '{$account}}']);_gaq.push(['_trackPageview']);(function() {var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);})();</script>";
+        echo "<script type=\"text/javascript\">var _gaq = _gaq || [];_gaq.push(['_setAccount', '{$account}']);_gaq.push(['_trackPageview']);(function() {var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);})();</script>";
     }
 }
\ No newline at end of file
diff --git a/MathJax.php b/MathJax.php
new file mode 100644
index 0000000..20dcc6b
--- /dev/null
+++ b/MathJax.php
@@ -0,0 +1,63 @@
+<?php
+/**
+ * MathJax
+ * 
+ * @package MathJax
+ * @author mutoo
+ * @version 1.0.0
+ * @link http://blog.mutoo.im/mathjax-plugin.html
+ */
+class MathJax implements Typecho_Plugin_Interface
+{
+    /**
+     * 激活插件方法,如果激活失败,直接抛出异常
+     * 
+     * @access public
+     * @return void
+     * @throws Typecho_Plugin_Exception
+     */
+    public static function activate()
+    {
+        Typecho_Plugin::factory('Widget_Archive')->footer = array('MathJax', 'footer');
+    }
+    
+    /**
+     * 禁用插件方法,如果禁用失败,直接抛出异常
+     * 
+     * @static
+     * @access public
+     * @return void
+     * @throws Typecho_Plugin_Exception
+     */
+    public static function deactivate()
+    {}
+    
+    /**
+     * 获取插件配置面板
+     * 
+     * @access public
+     * @param Typecho_Widget_Helper_Form $form 配置面板
+     * @return void
+     */
+    public static function config(Typecho_Widget_Helper_Form $form){}
+    
+    /**
+     * 个人用户的配置面板
+     * 
+     * @access public
+     * @param Typecho_Widget_Helper_Form $form
+     * @return void
+     */
+    public static function personalConfig(Typecho_Widget_Helper_Form $form){}
+    
+    /**
+     * 输出尾部js
+     * 
+     * @access public
+     * @param unknown $footer
+     * @return unknown
+     */
+    public static function footer() {
+        echo '<script type="text/x-mathjax-config">MathJax.Hub.Config({tex2jax: {inlineMath: [[\'$\',\'$\'], [\'\\\\(\',\'\\\\)\']]}});</script><script type="text/javascript" src="http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>';
+    }
+}