function newsletterValidate(formId){
	var email=document.getElementById(formId).email.value;
	var email_reg_exp = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-]{2,})+\.)+([a-zA-Z0-9]{2,})+$/;
	if (!email_reg_exp.test(email) || (email == "") || (email == "undefined")) {
		alert("Inserire un indirizzo email corretto.");
		document.getElementById(formId).email.value="";
		document.getElementById(formId).email.focus();
	}
	else document.getElementById(formId).submit();
}

function toggleForm(){
	if(document.getElementById("nl_form").style.display=="none"){
		document.getElementById("nl_form").style.display="block"
	}
	else{
		document.getElementById("nl_form").style.display="none"
	}
}