var Conta=0, Flag=0;

function Banner() {

  Flag=1;

  var images = new Array('Immagini/BannerHP1.jpg','Immagini/BannerHP2.jpg');

  if (document.all)
  {
    banner_home.style.filter="blendTrans(duration=1)";
    banner_home.filters.blendTrans.Apply();
  }

  banner_home.src = images[Conta];

  if (document.all)
  {
    banner_home.filters.blendTrans.Play();
  }

  (Conta == images.length - 1) ? Conta=0 : Conta++;

  setTimeout('Banner()',3000);
}