<!DOCTYPE html>
<html>
<!-- Any copyright is dedicated to the Public Domain.
     http://creativecommons.org/publicdomain/zero/1.0/ -->
<head>
<meta charset="utf-8">
<title>Page creating an alert inside the Sandbox</title>

<script>

alert("The user shouldn't see this");

</script>

</head>

<body>

</body>
</html>