<html>
<head>
<title>test.html</title>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<!--<link rel="stylesheet" type="text/css" href="./styles.css">-->
<script type="text/javascript">
<!--
window.onbeforeunload = onbeforeunload_handler;
window.onunload = onunload_handler;
function onbeforeunload_handler(){
var warning="确认退出?";
return warning;
}
function onunload_handler(){
var warning="谢谢光临";
alert(warning);
}
// -->
</script>
</head>
<body>
This is my HTML page. <br>
</body>
</html>
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