An HTML/Javascript snippet for Ecwid to clear billing form inputs after the 'My billing address is the same as shipping' checkbox is un-ticked

ecwid_clear_billing_form.html

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script>
<script>
if (typeof(Ecwid) == 'object') {
  // Add handler for Ecwid's OnPageLoad event
  Ecwid.OnPageLoaded.add(function(page) {
    if ('CHECKOUT_PAYMENT_DETAILS' == page.type) {      
      jQuery('.ecwid-AddressForm input[type=checkbox]').first().click(function() {
        if (!this.checked) {
          jQuery('.ecwid-AddressForm input[type=text]').val('');
        }
      });
    }
  });
}
</script>