/** load the next quote and display it */
 protected void loadPreviousQuote() {
   Log.d(LOG_TAG, "load previous quote into view");
   quoteView.show(quoteManager.previous());
 }
 /** load the next quote and display it */
 protected void loadNextQuote() {
   Log.d(LOG_TAG, "load next quote into view");
   quoteView.show(quoteManager.next());
 }