public String getLookAndFeelClassName(String lookAndFeel) {
		UIManager.LookAndFeelInfo[] lafs = UIManager.getInstalledLookAndFeels();
		for (LookAndFeelInfo laf : lafs) {
			if (laf.getName().compareTo(lookAndFeel) == 0)
				return laf.getClassName();
		}
		return null;
	}