function RichiediPassword() {
  var box = document.getElementById('box_richiediPassword');
  document.getElementById('contenitore').style.MozOpacity = 0.4;
  document.getElementById('contenitore').style.filter = 'alpha(opacity=40)';
  box.style.display = 'block';
  box.style.left = screen.width/2 - parseFloat(box.style.width)/2-20 + 'px';
  box.style.top = screen.height/2 - parseFloat(box.style.height) + 'px';
  document.getElementById('box_richiediPassword_email').focus()
  }
  
function RichiediPassword_chiudi() {
  var box = document.getElementById('box_richiediPassword');
  document.getElementById('contenitore').style.MozOpacity = 1;
  document.getElementById('contenitore').style.filter = 'alpha(opacity=100)';
  box.style.display = 'none';
  }
  
function RichiediPassword_invia() {
  var mail = document.getElementById('box_richiediPassword_email').value;
  location.href = 'login.asp?mail=' + mail
  }