if (document.images) {
 SLIDES.image = document.images.SLIDESIMG;
 var fadein_opacity = 0;
 var fadein_img = SLIDES.image;
 SLIDES.post_update_hook = function() { fadein(SLIDES.image,0); }
}

function fadeIn(objId,opacity) {
 if (document.getElementById) {
  obj = document.getElementById(objId);
  if (opacity <= 100) {
   setOpacity(obj, opacity);
   opacity += 10;
   window.setTimeout("fadeIn('"+objId+"',"+opacity+")", 100);
  }
 }
}

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
}