function invianews()
{
	var Filtro;
	Filtro = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-]{2,})+\.)+([a-zA-Z0-9]{2,4})$/;

	var email 	= document.newsletter.emailnews.value;

	if (!Filtro.test(email))
	{
		alert("Indirizzo mail vuoto o non corretto.");
		document.modulo.emailnews.focus();
		return false;
	}
	else
	{
		xmlHttp=GetXmlHttpObject()
		if (xmlHttp==null)
		{
			alert ("Browser does not support HTTP Request")
			return false;
		} 
		var url="/config/newsletter.php"
		url=url+"?q="+email
		url=url+"&sid="+Math.random()
		//xmlHttp.onreadystatechange=stateChanged 
		xmlHttp.open("GET",url,true)
		xmlHttp.send(null)
		alert("Inserimento completato con successo");
	}
	return false;
}