function disabilita()
  {
  document.regalo.cc_number.disabled = true;
  document.regalo.cc_type.disabled = true;
  document.regalo.cc_expmonth.disabled = true;
  document.regalo.cc_expyear.disabled = true;
  }

function abilita()
  {
  document.regalo.cc_number.disabled = false;
  document.regalo.cc_type.disabled = false;
  document.regalo.cc_expmonth.disabled = false;
  document.regalo.cc_expyear.disabled = false;
  }

function nascondi() {
  document.getElementById('dregalo').style.display = 'none';
//  document.getElementById('intesta').style.display = 'block';
//  document.getElementById('intestr').style.display = 'none';
//  document.getElementById('intestu').style.display = 'none';
//  document.getElementById('heada').style.display = 'block';
//  document.getElementById('headr').style.display = 'none';
//  document.getElementById('headu').style.display = 'none';
//  target.visibility = 'hidden';
}

function mostra() {
  document.getElementById('dregalo').style.display = 'block';
//  document.getElementById('intesta').style.display = 'none';
//  document.getElementById('intestr').style.display = 'block';
//  document.getElementById('intestu').style.display = 'none';
//  document.getElementById('heada').style.display = 'none';
//  document.getElementById('headr').style.display = 'block';
//  document.getElementById('headu').style.display = 'none';
//  target.visibility = 'visible';
}