function isValidEmailAddress(emailAddress) {
	var pattern = new RegExp(/^(("[\w-\s]+")|([\w-]+(?:\.[\w-]+)*)|("[\w-\s]+")([\w-]+(?:\.[\w-]+)*))(@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$)|(@\[?((25[0-5]\.|2[0-4][0-9]\.|1[0-9]{2}\.|[0-9]{1,2}\.))((25[0-5]|2[0-4][0-9]|1[0-9]{2}|[0-9]{1,2})\.){2}(25[0-5]|2[0-4][0-9]|1[0-9]{2}|[0-9]{1,2})\]?$)/i);
	return pattern.test(emailAddress);
}

function validateNieuwsbriefForm(){
	var errors = false;
	$("#nieuwsbriefError").hide();
	$(".nieuwsbrief_inschrijven .required input").each(function(){
		if($(this).attr('title') == $(this).val()){
			errors = true;
		}
		if($(this).hasClass('emailField')){
			if(isValidEmailAddress($(this).val()) == false){		
				errors = true;
			}
		}
	});
	if(errors){
		$("#nieuwsbriefError").slideDown();
		return false;
	}else{
		return true;
	}
}