function checkContact() {
	apos = document.getElementById('email').value.indexOf("@");
	dotpos = document.getElementById('email').value.lastIndexOf(".");
	if (document.getElementById('firstname').value == '') {
		alert("\nPlease type in your first name.");
		document.getElementById('firstname').focus();
		return false;
	}
	if (document.getElementById('lastname').value == '') {
		alert("\nPlease type in your last name.");
		document.getElementById('lastname').focus();
		return false;
	}
	if (document.getElementById('email').value == '') {
		alert("\nPlease type in your email address.");
		document.getElementById('email').focus();
		return false;
	}
	if (apos < 1 || dotpos-apos < 2) {
		alert("\nThat is not a valid email address, please try again.");
		document.getElementById('email').focus();
		return false;
	}
	if (document.getElementById('enquiry').value == '') {
		alert("\nPlease type in your enquiry.");
		document.getElementById('enquiry').focus();
		return false;
	} else {
		return true;
	}
}