<html>
  <head>
    <script>
      onpageshow = function(pageShowEvent) {
        var bc = new BroadcastChannel("evict_from_bfcache");
        bc.onmessage = function(event) {
          if (event.data == "nextpage") {
            bc.close();
            location.href += "?nextpage";
          } else if (event.data == "back") {
            bc.close();
            history.back();
          } else if (event.data == "forward") {
            // Note, we don't close BroadcastChannel
            history.forward();
          } else if (event.data == "close") {
            bc.postMessage("closed");
            bc.close();
            window.close();
          }
        }

        bc.postMessage({ type: "pageshow", persisted: pageShowEvent.persisted});
      };
    </script>
  </head>
  <body>
  </body>
</html>
