var msgPhoneNumber = "Enter your telephone number";
var msgPostcode = "Enter your postcode";

function clearPhoneNumber() {
	if (document.getElementById('phoneNumber')) {
		if (document.getElementById('phoneNumber').value == msgPhoneNumber) {
			document.getElementById('phoneNumber').value = '';
		}
	}
}

function clearPostcode() {
	if (document.getElementById('postcode')) {
		if (document.getElementById('postcode').value == msgPostcode) {
			document.getElementById('postcode').value = '';
		}
	}
}

function resetPhoneNumber() {
	if (document.getElementById('phoneNumber')) {
		if (document.getElementById('phoneNumber').value == '') {
			document.getElementById('phoneNumber').value = msgPhoneNumber;
		}
	}
}

function resetPostcode() {
	if (document.getElementById('postcode')) {
		if (document.getElementById('postcode').value == '') {
			document.getElementById('postcode').value = msgPostcode;
		}
	}
}