<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>Test window for top navigation by location tests</title>
<script>
function onNav() {
opener.postMessage(window.name, "*");
}
window.onload = onNav;
window.onhashchange = onNav;
</script>
</head>
<body>
<iframe name="if1" sandbox="allow-scripts allow-same-origin"></iframe>
<iframe name="if2" sandbox="allow-scripts allow-same-origin allow-top-navigation"></iframe>
<iframe name="if3" sandbox="allow-scripts allow-top-navigation"></iframe>
</body>
</html>