var browserVersion = parseFloat(navigator.appVersion.split('MSIE')[1]);
if ((browserVersion >= 5.5) && (browserVersion < 7)){
	window.onload = correctPNG();
}

function correctPNG(){
	var blankImgUrl = "images/blank.gif";
	var imgs = document.getElementsByTagName("IMG");
	for (var idx = 0; idx < imgs.length; idx++){
		if (imgs[idx].src.indexOf('.png') > 0){
			var w = imgs[idx].offsetWidth;
			var h = imgs[idx].offsetHeight;
			var src = imgs[idx].src;
			imgs[idx].style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(enable=true, sizingMethod=scale src='" + src + "')";
			imgs[idx].style.width = w;
			imgs[idx].style.height = h;
			imgs[idx].src = blankImgUrl;
		}
	}
}