private void saveDesignToNewFile() {
		JFileChooser fc = new JFileChooser();
		FileNameExtensionFilter filter = new FileNameExtensionFilter(
				"Simu Files", "smu");

		fc.setFileFilter(filter);

		fc.setSelectedFile(file);

		int returnVal = fc.showSaveDialog(null);
		if (returnVal == JFileChooser.APPROVE_OPTION) {
			File fileTmp = fc.getSelectedFile();
			String fileName = fileTmp.getAbsolutePath();
			if (!fileName.toLowerCase().endsWith(".smu"))
				fileTmp = new File(fileName + ".smu");

			if (fileTmp.exists()) {
				if (JOptionPane.showConfirmDialog(null, "File\n  "
						+ fileTmp.getAbsolutePath()
						+ "\nAlready exists, Override it?", "Save?",
						JOptionPane.YES_NO_OPTION) != JOptionPane.OK_OPTION)
					return;
			}
			saveDesign(fileTmp);
			setFile(fileTmp);
		}
	}