If this page is not cached, IE7 will show two alerts.

HTML


<html>

<head>

<script type="text/javascript">alert((new Date).getTime());</script>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8">

</head>

<body>

<p>If this page is not cached, IE7 will show two alerts.</p>

</body>

</html>