file_top_navigation_by_location.html

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<!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>