function delivery_details(answer) {

	billAdd		= document.getElementById('billing_address');
	billCity	= document.getElementById('billing_town');
	billPC		= document.getElementById('billing_postcode');

	desAdd		= document.getElementById('delivery_address');
	desCity		= document.getElementById('delivery_town');
	desPC		= document.getElementById('delivery_postcode');
	
	if (answer == "y") {
		desAdd.value = billAdd.value
		desCity.value = billCity.value
		desPC.value = billPC.value
	}
	
	if (answer == "n") {
		desAdd.value = ""
		desCity.value = ""
		desPC.value = ""
	}
}