function newsletterValid() 
{
	// first name
	var firstname = document.getElementById("firstname");
	if (firstname.value.length == 0) {
		alert("Please enter your first name.");
		return false;
	} else if (!firstname.value.match(/^[A-Za-z]+$/)) {
		alert("First name may only contain letters.");
		return false;
	}
	// email
	var email = document.getElementById("email");
	if (email.value.length == 0) {
		alert("Please enter your email.");
		return false;
	} else if (!email.value.match(/^[\w\-\.\_\+]+\@[a-zA-Z0-9\.\-]+\.[a-zA-z]{2,4}$/)) {
		alert("Please enter a real email address.");
		return false;
	}
	return true;
}