<!DOCTYPE HTML>
<html>
<head>
<title>页面倒计时自动关闭</title>
<meta charset="utf-8" />
<script language="javascript">
var i = 5;
function clock(){
i = i - 1;
document.title="本窗口将在" + i + "秒后自动关闭!";
if (i > 0) {
setTimeout("clock();",1000);
} else {
self.close();
}
}
clock();
</script>
</head>
<body>
</body>