function emailCheck(el) {
	var emailStr = el;
	var emailPat = /^[\'_\.0-9A-Za-z-]+@([0-9A-Za-z-]+[0-9A-Za-z-\.]+)\.([A-Za-z]){2,4}$/;
	var email = emailStr.toLowerCase();
	var matchArray = email.match(emailPat);
	if (matchArray==null) {
		return false;
	}
	return true;
}

function validateEnquiries() {
	if(document.getElementById('FormName').value == '') {
		alert('Please enter your name');
		document.getElementById('FormName').focus();
		return false;
	} else if(document.getElementById('ContactTelephone').checked == false && document.getElementById('ContactEmail').checked == false) {
		alert('Please select whether you would prefer to be contacted by telephone or email');
		document.getElementById('ContactTelephone').focus();
		return false;
	} else if(document.getElementById('ContactEmail').checked == true && document.getElementById('FormEmail').value == '') {
		alert('Please enter your email address');
		document.getElementById('FormEmail').focus();
		return false;
	} else if(document.getElementById('ContactEmail').checked == true && emailCheck(document.getElementById('FormEmail').value) == false) {
		alert('Please enter a valid email address');
		document.getElementById('FormEmail').focus();
		return false;
	} else if(document.getElementById('ContactTelephone').checked == true && document.getElementById('FormTelephone').value == '') {
		alert('Please enter your telephone number');
		document.getElementById('FormTelephone').focus();
		return false;
	} else if(document.getElementById('FormEnquiry').value == '') {
		alert('Please enter your enquiry');
		document.getElementById('FormEnquiry').focus();
		return false;
	}
	return true;
}