var usePNGFix = /MSIE (5|6)/.test(navigator.userAgent);

function showImage(id, src) {
	var img = document.getElementById(id);
	if (usePNGFix)
		img.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + src + "', sizingMethod='scale')";
	else
		img.src = src;
}