gistfile1.txt

_disableEnableAll: function(element, isDisabled) {
  var descendants = element.descendants();
  for (var k in descendants) {
   if(k !== 'toJSON') {
    descendants[k].disabled = isDisabled;
   }
  }
 
  element.disabled = isDisabled;
 },
 
 
syncWithBilling: function () {
		$('billing-address-select') && this.newAddress(!$('billing-address-select').value);
		$('shipping:same_as_billing').checked = true;
		if (!$('billing-address-select') || !$('billing-address-select').value) {
			arrElements = Form.getElements(this.form);
			for (var elemIndex in arrElements) {
				if(elemIndex !== 'toJSON') {
					if (arrElements[elemIndex].id) {
						var sourceField = $(arrElements[elemIndex].id.replace(/^shipping:/, 'billing:'));
						if (sourceField){
							arrElements[elemIndex].value = sourceField.value;
						}
					}
				}
			}
			//$('shipping:country_id').value = $('billing:country_id').value;
			shippingRegionUpdater.update();
			$('shipping:region_id').value = $('billing:region_id').value;
			$('shipping:region').value = $('billing:region').value;
			//shippingForm.elementChildLoad($('shipping:country_id'), this.setRegionValue.bind(this));
		} else {
			$('shipping-address-select').value = $('billing-address-select').value;
		}
	},