<script>
var confirmationPageURL = "http://google.com"; // Replace the URL with the URL of your custom page

// Add handler for Ecwid's OnPageLoad event
if (
  typeof(Ecwid) == 'object'
  && typeof(Ecwid.OnPageLoad) == 'object'
) {
  Ecwid.OnPageLoad.add(function(page) {
    // Redirect user if needed
    if (
      typeof(page) == 'object'
      && 'ORDER_CONFIRMATION' == page.type
    ) {
      window.location = confirmationPageURL;
    }
  });
}
</script>