public static Icon getIcon(String urlString) {
		if (urlString != null) {
			if (!icons.containsKey(urlString)) {
				try {
					URL url = new URL(urlString);
					Icon i = new ImageIcon(url);
					icons.put(urlString, i);
				} catch (MalformedURLException e1) {
					return null;
				}
			}
			return icons.get(urlString);
		} else {
			return null;
		}
	}
public static Icon getIcon(String urlString)