function contactForm_init(){
  var contactForm = document.getElementById('formContact');
  contactForm.nome.focus();
  contactForm.captcha.setAttribute("autocomplete","off");
  }

function contactForm_send(){
  var contactForm = document.getElementById('formContact');
  contactForm.submit.disabled = true;
  if(contactForm.nome.value=='' || contactForm.mail.value=='' || contactForm.messaggio.value==''){
    alert('Non sono stati compilati tutti i campi del modulo.');
    contactForm.submit.disabled = false;
    return false;
    }
  else{
    return true;
    }
  }