function isRequired(address) {
	var retVal = true;
	if(address == '') {
		retVal = false;
	}
	return retVal;
}

function isValidEmail(address) {
	var retVal = true;
	var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
	if(reg.test(address) == false) {
		retVal = false
	}
	return retVal;
}

function isValidPhone(phone) {
	var retVal = true;
	/*
	var reg = /^(44\s?7\d{3}|\(?07\d{3}\)?)\s?\d{3}\s?\d{3}$/;
	if(reg.test(phone) == false) {
		retVal = false
	}
	*/
	return retVal;
}