IE6-8 transparent png fade FIX

gistfile1.js

//specific image on site
//FIX IE < 9 transparent png fading
      var img = $("div.replace.full"+idart+" img");
      //console.log(img[0]);
      var src = $("div.replace.full"+idart+" img").attr('src');
      //console.log(src);

      if (src.substr(src.length-4) === '.png' || src.substr(src.length-4) === '.PNG') {
            img[0].style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled='true',sizingMethod='crop',src='" + src + "')";
            //console.log(document.images[i]);
      }

//all images on site
var i;
for (i in document.images) {
    if (document.images[i].src) {
        var imgSrc = document.images[i].src;
        if (imgSrc.substr(imgSrc.length-4) === '.png' || imgSrc.substr(imgSrc.length-4) === '.PNG') {
            document.images[i].style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled='true',sizingMethod='crop',src='" + imgSrc + "')";
        }
    }
}