<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script type="text/javascript">
window.onbeforeunload = onbeforeunload_handler;
window.onunload = onunload_handler;
function onbeforeunload_handler()
{
var warning="确认退出?";
alert(warning);
return warning;
}
function onunload_handler()
{
var warning="谢谢光临";
alert(warning);
}
//仅支持IE
</script>
</head>
<body>
</body>
</html>