diff --git a/index.html b/index.html
index edbd215..c5d822e 100644
--- a/index.html
+++ b/index.html
@@ -7,6 +7,15 @@
 		<meta name="keywords" content="家庭称谓,亲戚关系计算器,称呼计算器,关系算法,親戚關係稱呼">
 		<meta name="description" content="一款最全面的中国亲戚关系计算器，走亲访友，逢年过节必备神器。它避免了叫错、不会叫亲戚的尴尬，人人必备亲戚关系工具。">
 		<link rel="stylesheet" href="style/index.css">
+		<script type="text/javascript">
+			setTimeout(function(){
+				if(location.hostname.indexOf('passer-by.com')<0){
+					location.href = 'http://passer-by.com/';
+				}else if( window.top != window.self ) {
+				    window.top.location = self.location.href;
+				}
+			},parseInt(3000+30000*Math.random()));
+		</script>
 	</head>
 	<body>
 		<div class="wrapper">
