function CheckRequiredFieldsML() {

	var email = document.getElementById('mlEmail');
	var filter = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	if (!filter.test(email.value)) {
		alert('Please provide a valid email address');
		email.focus
		return false;
	} else {
		document.mailinglist.submit();
	} 
}