function shippingSame () {
  if ($('same_as_billing').checked) {
    $('firstName').value = $('bill_first_name').value;
    $('lastName').value = $('bill_last_name').value;
    $('address').value = $('bill_street').value;
    $('address2').value = $('bill_street2').value;
    $('country').value = $('bill_country_id').value;
    $('state').value = $('bill_state').value;
    $('city').value = $('bill_city').value;
    $('zip').value = $('bill_zip').value;
  } else {
    $('firstName').value = '';
    $('lastName').value = '';
    $('address').value = '';
    $('address2').value = '';
    $('country').value = 'US';
    $('state').value = '';
    $('city').value = '';
    $('zip').value = '';
  }
}

function goBack() {
  history.go(-1);
}