if (navigator.platform == "Win32" && navigator.appName == "Microsoft Internet Explorer" && window.attachEvent) { 
document.writeln('<style type="text/css"> #logoImage { visibility:hidden; } </style>');
window.attachEvent("onload", fnLoadPngs); 
}

function fnLoadPngs() { 
	var rslt = navigator.appVersion.match(/MSIE (\d+\.\d+)/, ''); 
	var itsAllGood = (rslt != null && Number(rslt[1]) >= 5.5); 

	if (document.logo) {
		img = document.logo;
		if (itsAllGood && img.src.match(/\.png$/i) != null) { 
			var src = img.src; 
			logoImage.style.width = img.width + "px"; 
			logoImage.style.height = img.height + "px"; 
			logoImage.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + src + "', sizingMethod='scale')" 
			logoImage.src = "/js_lib/blank.gif"; 
		}
		img.style.visibility = "visible"; 
	}
}