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

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 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 darkenImage(imageId){
	el=document.getElementById(imageId);
	setDarkenHandler(el);
}

function setDarkenHandler(el){

el.style.opacity = 0.8;
el.style.filter = "alpha(opacity=80)";
el.onmouseover=function()
{
	el.style.opacity = 1;
	el.style.filter = "alpha(opacity=100)";

}
el.onmouseout=function()
{
	el.style.opacity = 0.8;
	el.style.filter = "alpha(opacity=80);";
}
}