先将下列代码复制到<head></head>之间：
<SCRIPT LANGUAGE="Javascript">
<!-- Begin
pageOpen = new Date();
function bye() {
pageClose = new Date();
minutes = (pageClose.getMinutes() - pageOpen.getMinutes());
seconds = (pageClose.getSeconds() - pageOpen.getSeconds());
time = (seconds + (minutes * 60));
if (time == 1) {
time = (time + " second");
}
else {
time = (time + " seconds");
}
alert('您在这儿呆了' + time + '.欢迎再来!');
}
// End -->
</SCRIPT>
再将下列代码复制到<body></body>之间：
<BODY BGCOLOR=#ffffff vlink=#0000ff onUnload="bye()">