}
@Override
public void addButtons() {
ISIApplication application = ISIApplication.get();
BookmarkablePageLink<Void> homeLink = new BookmarkablePageLink<Void>("homeLink", application.getHomePage());
application.setLinkProperties(homeLink);
add(homeLink);
BookmarkablePageLink<Void> contentsLink = new BookmarkablePageLink<Void>("contentsLink", application.getReadingPageClass());
application.setLinkProperties(contentsLink);
add(contentsLink);
BookmarkablePageLink<Void> rcLink = new BookmarkablePageLink<Void>("myResponseCollectionsLink", application.getResponseCollectionsPageClass());
rcLink.setVisible(application.isResponseCollectionsOn());
application.setLinkProperties(rcLink);
add(rcLink);
BookmarkablePageLink<Void> questionsLink = new BookmarkablePageLink<Void>("myQuestionsLink", application.getMyQuestionsPageClass());
questionsLink.setVisible(application.isMyQuestionsOn());
application.setLinkProperties(questionsLink);
add(questionsLink);
BookmarkablePageLink<Void> tagsLink = new BookmarkablePageLink<Void>("myTagsLink", application.getTagsPageClass());
tagsLink.setVisible(application.isTagsOn());
application.setLinkProperties(tagsLink);
add(tagsLink);
notebookLink = new BookmarkablePageLink<Page>("notebookLink", application.getNotebookPageClass());
application.setLinkProperties(notebookLink);
notebookLink.setVisible(application.isNotebookOn());
add(notebookLink);
whiteboardLink = new BookmarkablePageLink<Page>("whiteboardLink", application.getWhiteboardPageClass());
application.setLinkProperties(whiteboardLink);
whiteboardLink.setVisible(application.isWhiteboardOn());
add(whiteboardLink);
glossaryLink = new GlossaryLink("glossaryLink", null);
application.setLinkProperties(glossaryLink);
glossaryLink.setVisible(application.isGlossaryOn());
add(glossaryLink);
}