addLoadEvent(newsletterDOM);

function newsletterDOM() {
	var frmNewsletter = document.getElementById("formNewsletter");
	if(frmNewsletter) {
		frmNewsletter.onsubmit = function() {
			return validateNewsletter(this);
		}
	}
}

function validateNewsletter(theForm) {
	var error = 0;
	var msg = "";

	if(theForm.title.value=="") {
		msg += "\n- " + lbl_newsletter_titel;
		error++;
	}
	if(theForm.first_name.value=="") {
		msg += "\n- " + lbl_newsletter_voornaam;
		error++;
	}
	if(theForm.last_name.value=="") {
		msg += "\n- " + lbl_newsletter_naam;
		error++;
	}
	if(theForm.email.value=="") {
		msg += "\n- " + lbl_newsletter_email;
		error++;
	}
	
	if (error) {
		alert(label_newsletter_required_fields + msg);
		return false;
	}
	if (!validateEmail(theForm.email.value)) {
		alert(label_newsletter_valid_email);
		return false;
	}

	if (!theForm.opt_in.checked) {
		alert(lbl_newsletter_opt_in_ticked);
		return false;
	}
	
	return true;
}
function validateEmail(email) {
	
	if (email != null && email != "") {
		a = email.lastIndexOf("@");
		b = email.lastIndexOf(".");
		c = email.indexOf(":");
		d = email.indexOf("/");
		e = email.substring(0,a);
		f = e.indexOf("@");
		g = email.substring(a+1,email.length);
		h = g.indexOf("[");
		i = g.indexOf("]");
		j = g.indexOf("<");
		k = g.indexOf(">");
		l = email.substring(a+1,b);
		m = email.substring(b+1,email.length);
		n = email.substring(0,a);
		p = email.indexOf("'");
		q = email.indexOf("\"");
		o = 0;
		if (a > b) {o++};
		if (c != -1) {o++};
		if (d != -1) {o++};
		if (f != -1) {o++};
		if (h != -1) {o++};
		if (i != -1) {o++};
		if (j != -1) {o++};
		if (k != -1) {o++};
		if (l.length < 2) {o++};
		if (m.length < 2) {o++};
		if (n.length < 1) {o++};
		if (p != -1) {o++};
		if (q != -1) {o++};
		if (o != 0) {
			return false;
		}
	}
	return true;
}