window.attachEvent("onload", correctPNG);
    window.attachEvent("onload", alphaBackgrounds);

function correctPNG() // correctly handle PNG "IMG Element" transparency in Win IE 5.5 or higher.
   {
   for(var i=0; i<document.images.length; i++)
      {
      var img = document.images[i]
      var imgName = img.src.toUpperCase()
      if (imgName.substring(imgName.length-3, imgName.length) == "PNG")
         {
         var imgID = (img.id) ? "id='" + img.id + "' " : ""
         var imgClass = (img.className) ? "class='" + img.className + "' " : ""
         var imgTitle = (img.title) ? "title='" + img.title + "' " : "title='" + img.alt + "' "
         var imgStyle = "display:inline-block;" + img.style.cssText
         if (img.align == "left") imgStyle = "float:left;" + imgStyle
         if (img.align == "right") imgStyle = "float:right;" + imgStyle
         if (img.parentElement.href) imgStyle = "cursor:hand;" + imgStyle
         var strNewHTML = "<span " + imgID + imgClass + imgTitle
         + " style=\"" + "width:" + img.width + "px; height:" + img.height + "px;" + imgStyle + ";"
         + "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader"
         + "(src=\'" + img.src + "\', sizingMethod='scale');\"></span>"
         img.outerHTML = strNewHTML
         i = i-1
         }
      }
   }

function alphaBackgrounds() // correctly handle PNG "BACKGROUNDCOLOUR" transparency in Win IE 5.5 or higher.
{
    var rslt = navigator.appVersion.match(/MSIE (\d+\.\d+)/, '');
    var itsAllGood = (rslt != null && Number(rslt[1]) >= 5.5);
    for (i=0; i<document.all.length; i++){
        var bg = document.all[i].currentStyle.backgroundImage;
        if (itsAllGood && bg){
            if (bg.match(/\.png/i) != null){
                var mypng = bg.substring(5,bg.length-2);
                document.all[i].style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+mypng+"', sizingMethod='scale')";
                document.all[i].style.backgroundImage = "url('../img/alpha_pixel.gif')";
            }
        }
    }
}