*/
public void changeLanguage(GuiLanguage lang) {
SwitchLanguage sl = SwitchLanguage.getInstance() ;
if ((lang != null) && !sl.getCurrentLanguage().equals(lang)) {
try {
sl.changeLang(lang) ;
this.notifyLanguageChange() ;
} catch (KameleonException ke) {
InformationMessage imsg = new InformationMessage(
State.ERROR, LANGUAGE_CHANGE_ERROR,
lang.getLanguage().getDisplayLanguage()) ;