function LoadPngs(blankImagePath) {
    if (navigator.platform == "Win32" && navigator.appName == "Microsoft Internet Explorer" && window.attachEvent) {
        var rslt = navigator.appVersion.match(/MSIE (\d+\.\d+)/, '');
        var itsAllGood = (rslt != null && Number(rslt[1]) >= 5.5 && Number(rslt[1]) < 7.0);
        // debugger

        if (itsAllGood) {
            document.writeln('<style type="text/css">img { visibility:hidden; } </style>');
            for (var i = 0; i < document.all.length; i++) {
                var img = document.all[i]
                if (img.src != null) {
                    var imgName = img.src.toUpperCase()
                    if (imgName.substring(imgName.length - 3, imgName.length) == "PNG") {
                        //alert('ok');
                        var src = img.src;
                        img.style.width = img.width + "px";
                        img.style.height = img.height + "px";
                        img.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader  (src='" + src + "')";
                        img.src = blankImagePath;
                    }
                    img.style.visibility = "visible";
                }
            }
        }
    }
}