<!doctype html>
<script>
  let current = new URL(window.location.href);
  let navigateTo = current.searchParams.get("to");
  let channelName = current.searchParams.get("channelName");
  current.search = "";
  if (navigateTo) {
    let next = new URL(navigateTo, current);
    setTimeout(() => {
      window.location = next.href;
    }, 50);
  }

  if (channelName) {
    let bc = new BroadcastChannel(channelName);
    bc.postMessage("loaded");
  }
</script>