Clear address fields on Billing address step and unselect checkbox 'My billing address is the same as the shipping address'

clear-address-fields-and-checkbox.js

<script src="//ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script>
<script>if (typeof(Ecwid) == 'object') {
  Ecwid.OnPageLoaded.add(function(page) {
    if ('CHECKOUT_PAYMENT_DETAILS' == page.type) {
$('input[type=checkbox]').prop('checked', false);
$("input[type=text]").prop('disabled', false);
$("input[type=tel]").prop('disabled', false);
$("select[name='country-list']").prop("disabled", false);
$("select[name='state-list']").prop("disabled", false);
$("select[name='state-suggest']").prop("disabled", false);
$('input[type=text]').val('');
$('input[type=tel]').val('');
$("select[name='country-list']").val('');
$("select[name='state-list']").val('');
$("select[name='state-suggest']").val('');
        }
  });
}
</script>