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<html>
<head>
<script>
onpageshow = function() {
let bc = new BroadcastChannel("navigation_type");
bc.onmessage = function(event) {
if (event.data == "loadNewPage") {
bc.close();
location.href = location.href + "?next";
} else if (event.data == "back") {
bc.close();
history.back();
} else if (event.data == "close") {
window.close();
bc.postMessage("closed");
bc.close();
}
}
bc.postMessage({ navigationType: performance.navigation.type });
}
</script>
</head>
<body>
</body>
</html>