function launchCenter(url, name, height, width, options) {
	var str = "height=" + height + ",innerHeight=" + height;
	str += ", width=" + width + ", innerWidth=" + width + "," + options;
	if (window.screen) {
		var ah = screen.availHeight - 30;
		var aw = screen.availWidth - 10;

		var xc = (aw - width) / 2;
		var yc = (ah - height) / 2;

		str += ", left=" + xc + ",screenX=" +xc;
		str += ",top=" + yc + ",screenY=" +yc;
	}
	return window.open(url, name, str);
}