function controlla_email(email)
{
	Filtro = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-]{2,})+\.)+([a-zA-Z0-9]{2,})+$/;
	if (Filtro.test(email))
	  return true;
	else
	  {
	  return false;
	  }
}

function change_language() {
	document.getElementById("form_language").submit();
}