function pop(url, width, height) {
	x = 0;
	y = 0;
	if (isIe4Plus()) {
		x = width/2-screen.width/2;
		y = height/2-screen.height/2;
		strFeatures = "fullscreen=no,menubar=no,toolbar=no,location=no,directories=no,status=no,resizable=no,copyhistory=yes,width=" + width + ",height=" + height + ",left=" + x + ",top=" + y + ",scrollbars=no";
		window.open(url, "_blank", strFeatures);
	}
	else if (isNet4Plus()) {
		strFeatures = "fullscreen=no,menubar=no,toolbar=no,location=no,directories=no,status=no,resizable=no,copyhistory=yes,width=" + width + ",height=" + height + ",left=0,top=0,scrollbars=no"
		window.open(url, null, strFeatures);
	}
}

function isNet4Plus() {
	if (navigator.appName == "Netscape") {
		if (navigator.appVersion.substring(0, 3) >= 4 && navigator.appVersion.substring(0, 3) < 5) {
			return true;
		}
	}
	return false;
}

function isIe4Plus() {
	if (navigator.appName == "Microsoft Internet Explorer") {
		if (navigator.appVersion.substring(0, 3) >= 4.0) {
			return true;
		}
	}
	return false;
}