function clearValue(formField) {
	document.getElementById(formField).value="";
}
	
function shippingField(){	
	if( document.getElementById("shipping").checked == true ) {
		document.getElementById("DeliveryAddress1").value = document.getElementById("Address1").value;
		document.getElementById("DeliveryAddress2").value = document.getElementById("Address2").value;
		document.getElementById("DeliveryPostCode").value = document.getElementById("PostCode").value;
	}
	else {
		document.getElementById("DeliveryAddress1").value = "";
		document.getElementById("DeliveryAddress2").value = "";
		document.getElementById("DeliveryPostCode").value = "";
	}
}