function enablePngImages() {
 var imgArr = document.getElementsByTagName("IMG");
 for(i=0; i<imgArr.length; i++){
  if(imgArr[i].src.toLowerCase().lastIndexOf(".png") != -1){
   imgArr[i].style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + imgArr[i].src + "', sizingMethod='auto')";
   imgArr[i].src = "/data/desktop/blank.gif";
  }

  if(imgArr[i].currentStyle.backgroundImage.lastIndexOf(".png") != -1){
   var img = imgArr[i].currentStyle.backgroundImage.substring(5,imgArr[i].currentStyle.backgroundImage.length-2);
   imgArr[i].style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+img+"', sizingMethod='crop')";
   imgArr[i].style.backgroundImage = "url(/data/desktop/blank.gif)";
  }
 }
}

function enableBgPngImages(bgElements){
 for(i=0; i<bgElements.length; i++){
  if(bgElements[i].currentStyle.backgroundImage.lastIndexOf(".png") != -1){
   //alert(bgElements[i]);
   var img = bgElements[i].currentStyle.backgroundImage.substring(5,bgElements[i].currentStyle.backgroundImage.length-2);
   bgElements[i].style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+img+"', sizingMethod='crop')";
   bgElements[i].style.backgroundImage = "url(/data/desktop/blank.gif)";
  }
 }
}