修改绑定功能
diff --git a/www/security.html b/www/security.html
index d9811ec..6994b22 100644
--- a/www/security.html
+++ b/www/security.html
@@ -15,7 +15,7 @@
 </head>
 <body>
     <header class="aui-bar aui-bar-nav" style="padding-top:25px;">
-        <a class="aui-pull-left" href="main.html">
+        <a class="aui-pull-left" href="javascript:window.history.go(-1)">
             <span class="aui-iconfont aui-icon-left"></span>
         </a>
         <div class="aui-title">账户安全</div>