// simple email address verification
// (c) Steven Kennedy and KCS 2007


function validate() {
	var email = document.contact.email.value;
	if ((email.length == 0) || (email == "")) {
		badalert();
		return false;
	}
	if (checkmore(email) == false) {
		badalert();
		return false;
	}
	return true;
}


function checkmore() {
	var at = "@";
	var dot = ".";
	var email = document.contact.email.value;
	var iat = email.indexOf(at);
	var idot = email.indexOf(dot);
	var lemail = email.length;
	
	if (iat == -1) {
		return false;
	}
	if (idot == -1) {
		return false;
	}
	if (email.indexOf(" ") != -1) {
		return false;
	}
	return true;
}

function badalert() {
	alert("Please enter a valid email address.");
}