diff --git a/en/index.html b/en/index.html
index 9b782554c..740cc20de 100644
--- a/en/index.html
+++ b/en/index.html
@@ -25,13 +25,13 @@
     <link rel="stylesheet" href="../assets/css/xenon-skins.css">
     <link rel="stylesheet" href="../assets/css/nav.css">
     <script src="../assets/js/jquery-1.11.1.min.js"></script>
-    
+
     <script>
     var _hmt = _hmt || [];
     (function() {
       var hm = document.createElement("script");
       hm.src = "https://hm.baidu.com/hm.js?c05bb16ea908292af9f6c513087a1cc3";
-      var s = document.getElementsByTagName("script")[0]; 
+      var s = document.getElementsByTagName("script")[0];
       s.parentNode.insertBefore(hm, s);
     })();
     </script>
@@ -326,7 +326,7 @@
                             </li>
                         </ul>
                     </li> -->
-                    <div class="submit-tag">                    
+                    <div class="submit-tag">
                     <a href="about.html">
                         <i class="linecons-heart"></i>
                         <span class="tooltip-blue">关于本站</span>
@@ -349,15 +349,15 @@
 
                     <li class="dropdown hover-line language-switcher">
                         <a href="../cn/index.html" class="dropdown-toggle" data-toggle="dropdown">
-                            <img src="../assets/images/flags/flag-cn.png" alt="flag-cn" /> Chinese
+                            <img src="../assets/images/flags/flag-us.png" alt="flag-us" /> English
                         </a>
                         <ul class="dropdown-menu languages">
-                            <li>
+                            <li class="active">
                                 <a href="../en/index.html">
                                     <img src="../assets/images/flags/flag-us.png" alt="flag-us" /> English
                                 </a>
                             </li>
-                            <li class="active">
+                            <li>
                                 <a href="../cn/index.html">
                                     <img src="../assets/images/flags/flag-cn.png" alt="flag-cn" /> Chinese
                                 </a>
@@ -615,7 +615,7 @@ <h4 class="text-gray"><i class="linecons-tag" style="margin-right: 7px;" id="界
                 </div>
             </div>
             <br />
-            <!--END 推荐 --> 
+            <!--END 推荐 -->
             <!-- Information -->
             <h4 class="text-gray"><i class="linecons-tag" style="margin-right: 7px;" id="Information"></i>Information</h4>
             <div class="row">
@@ -4197,7 +4197,7 @@ <h4 class="text-gray"><i class="linecons-tag" style="margin-right: 7px;" id="UED
                setTimeout(function(){
                     _this.find('ul').attr("style","")
                }, 300);
-              
+
             } else {
                 $('.has-sub ul').each(function(id,ele){
                     var _that = $(this)