// sorgente delle funzioni principali: http://clagnut.com/sandbox/imagefades/

function initImage(imageId) {
  image = document.getElementById(imageId);
  setOpacity(image, 0);
  image.style.visibility = 'visible';
  fadeIn(imageId,0);
}

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

function fadeIn(objId,opacity) {
  if (document.getElementById) {
    obj = document.getElementById(objId);
    if (opacity <= 90) {
      setOpacity(obj, opacity);
      opacity += 10;
      window.setTimeout("fadeIn('"+objId+"',"+opacity+")", 200);
    }
  }
}

function fadeOut(objId, opacity) {
  if (document.getElementById) {
    obj = document.getElementById(objId);
    if (opacity >= 30) {
      setOpacity(obj, opacity);
      opacity -= 10;
      window.setTimeout("fadeOut('"+objId+"',"+opacity+")", 200);
    }
  }
}


function hideOut(objId, opacity) {
  if (document.getElementById) {
    obj = document.getElementById(objId);
    if (opacity > 0) {
      setOpacity(obj, opacity);
      opacity -= 1;
      window.setTimeout("hideOut('"+objId+"',"+opacity+")", 20);
    }
  }
}

function fadeInFrom0(objId) {
  opacity = 0
  if (document.getElementById) {
    obj = document.getElementById(objId);
    if (opacity <= 90) {
      setOpacity(obj, opacity);
      opacity += 10;
      window.setTimeout("fadeIn('"+objId+"',"+opacity+")", 200);
    }
  }
}

function getImages() {
  divs = document.getElementsByTagName('div');
  for(i=0;i<divs.length;i++) {
    if (divs[i].className == 'tabContent') {
      images = divs[i].getElementsByTagName('img');
      for(j=0;j<images.length;j++) {
        alert(images[j].src + ' asd ' + j);
      }
    }
    //alert(names);
  }
}