function correctPNG() 

   {

   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

             }

      }

   }

window.attachEvent("onload", correctPNG);



//filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled=true, sizingMethod=scale src='image.png');

//<script src="png.js" type="text/javascript"></script>