code:

	//Check if the user has entered an email address
	var email = document.getElementById('email').value;
	if (email.length == 0 ) {
		alert('Please enter an e-mail address.');
		document.getElementById('email').focus();
		return;
	}

	//And if they've confirmed it
	var cemail = document.getElementById('con-email').value;
	if (cemail.length == 0 ) {
		alert('Please confirm the e-mail address.');
		document.getElementById('con-email').focus();
		return;
	}

	//And check that the email and confirmation match.
	if (cemail != email) {
		alert('The e-mail addresses provided do not match.');
		document.getElementById('con-email').focus();
		return;
	}