function validate() {
	var name = document.getElementById('name');
	var email = document.getElementById('email');
	var message = document.getElementById('message');
	var error = '';
	
	if (name.value == '') {
		error += "Please enter your name.\n";
	}
	if (email.value == '') {
		error += "Please enter an email address.\n";
	}
	if (message.value == '') {
		error += "Please enter a message.";
	}
	
	if (error != '') {
		alert(error);
		return false;
	} else {
		return true;
	}
	
}