/** 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());
}