var transparentimage = "images/blank.gif";

var needhack = needhack();

function pnghack(element) {
	if (!needhack) {
		return;
	}
	var src = element.src;
	if (src.indexOf(transparentimage) != -1) {
		return;
	}
	if (src.indexOf(".png") == -1) {
		element.runtimeStyle.filter = "";
		return;
	}
	element.src = transparentimage;
	element.runtimeStyle.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + src + "',sizingMethod='scale')";
}

function needhack() {
	var pos = navigator.userAgent.indexOf("MSIE ");
	if (pos == -1) {
		return false;
	}
	var version = navigator.userAgent.substring(pos + 5);
	return (((version.indexOf("5.5") == 0) || (version.indexOf("6") == 0)) && (navigator.platform == ("Win32")));
}