$(document).ready(function()
{
	var buyer = $('.field-same_as_buyer input');
	var billing = $('.field-same_as_shipping input');
	
	buyer.change(
		function() {
			me = $(this);
			if (me.hasClass('not-checked')) {
				me.removeClass('not-checked');
				$('.field-billing_lastname').hide();
				$('.field-billing_firstname').hide();
				$('.field-billing_company').hide();
			} else {
				me.addClass('not-checked');
				$('.field-billing_lastname').show();
				$('.field-billing_firstname').show();
				$('.field-billing_company').show();
			}
		}

	);

	billing.change(
		function() {
			me = $(this);
			if (me.hasClass('not-checked')) {
				me.removeClass('not-checked');
				$('.field-billing_city').hide();
				$('.field-billing_street').hide();
				$('.field-billing_zip').hide();
			} else {
				me.addClass('not-checked');
				$('.field-billing_city').show();
				$('.field-billing_street').show();
				$('.field-billing_zip').show();
			}
		}

	);

	if (!buyer.attr('checked')) {
		buyer.addClass('not-checked');
	} else {
		$('.field-billing_lastname').hide();
		$('.field-billing_firstname').hide();
		$('.field-billing_company').hide();
	}
	if (!billing.attr('checked')) {
		billing.addClass('not-checked');
	} else {
		$('.field-billing_city').hide();
		$('.field-billing_street').hide();
		$('.field-billing_zip').hide();
	}
});