var arVersion = navigator.appVersion.split("MSIE");
var version = parseFloat(arVersion[1]);
if ((version < 7)) 
{
    function correctPNG() // correctly handle PNG transparency in Win IE 5.5 & 6.
    {
       var arVersion = navigator.appVersion.split("MSIE");
       var version = parseFloat(arVersion[1]);
       if ((version >= 5.5) && (document.body.filters)) 
       {
          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);
}