var immagini = new Array()
var faded = new Array()
var fadestep = new Array()
var fadeto = 100
var switchto = 300


function setOpacity(obj, opacity) {
  opacity = (opacity == 100)?99.999:opacity;
  
  // IE/Win
  obj.style.filter = "alpha(opacity:"+opacity+")";
  
  // Safari<1.2, Konqueror
  obj.style.KHTMLOpacity = opacity/100;
  
  // Older Mozilla and Firefox
  obj.style.MozOpacity = opacity/100;
  
  // Safari 1.2, newer Firefox and Mozilla, CSS3
  obj.style.opacity = opacity/100;
}


function initNewImage(objId, opacity) {
  fadeOut(objId, 100)
}
function switchImage(objId) {
  document.getElementById(objId).style.visibility = 'hidden';
  opacity = 10
  //window.setTimeout("initNewImage('"+objId+"',"+opacity+")", 200);
  faded[objId]++;
  if(faded[objId] >= immagini[objId].length) faded[objId] = 0;
  document.getElementById(objId).src = immagini[objId][faded[objId]]
  window.setTimeout("fadeIn('"+objId+"',"+opacity+")", fadeto);
}

function fadeOut(objId, opacity) {
  if (document.getElementById) {
    obj = document.getElementById(objId);
    if (opacity > 10) {
      setOpacity(obj, opacity);
      opacity -= fadestep[objId];
      window.setTimeout("fadeOut('"+objId+"',"+opacity+")", fadeto);
    } else {
      window.setTimeout("switchImage('"+objId+"')", switchto);
      /*
      opacity = 0
      //window.setTimeout("initNewImage('"+objId+"',"+opacity+")", 200);
      faded[objId]++;
      if(faded[objId] >= immagini[objId].length) faded[objId] = 0;
      document.getElementById(objId).src = immagini[objId][faded[objId]]
      window.setTimeout("fadeIn('"+objId+"',"+opacity+")", 200);
      */
    }
  }
}

function fadeIn(objId, opacity) {
  if (document.getElementById) {
    obj = document.getElementById(objId);
    if (opacity <= 100) {
      document.getElementById(objId).style.visibility = 'visible';
      setOpacity(obj, opacity);
      opacity += fadestep[objId];
      window.setTimeout("fadeIn('"+objId+"',"+opacity+")", fadeto);
    } else {
      opacity = 100
      //window.setTimeout("initNewImage('"+objId+"',"+opacity+")", 200);
      window.setTimeout("fadeOut('"+objId+"',"+opacity+")", fadeto);
    }
  }
}

function initImage(id, fst) {
  immagini[id] = new Array()
  faded[id] = 0
  fadestep[id] = fst
  for(var i=2; i<initImage.arguments.length; i++) {
    immagini[id][i-2] = initImage.arguments[i]
    //alert(immagini[id][i-1])
  }
  imageId = id;
  image = document.getElementById(imageId);
  setOpacity(image, 0);
  image.style.visibility = 'visible';
  fadeIn(imageId,10);
}