function pngfilter () {
	for (i = 0; i <= document.images.length, img = document.images[i]; i++)
	{	
		if (img.className == 'alphapng')
		{
			img.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+img.src+"', sizingMethod='image')";
			img.src = "../pix/site/x.gif";
		}
	}
}