try{
	document.execCommand('BackgroundImageCache', false, true);
} catch(e) {
}

function fixPNG(element) {
	if (!/MSIE (5\.5|6).+Win/.test(navigator.userAgent)) {
		return;
	}

	var src;

	if (element.tagName == 'IMG') {
		if (/\.png$/.test(element.src)) {
			src = element.src;
			element.src = '/blank.gif';
		}
	} else {
		src = element.currentStyle.backgroundImage.match(/url\("(.+\.png)"\)/i);

		if (src) {
			src = src[1];
			element.runtimeStyle.backgroundImage = 'none';
		}
	}

	if (src) {
		element.runtimeStyle.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + src + "',sizingMethod='crop')";
	}
}