++ (float) defaultWidth;
+- (void) setViewportWidth:(float)width;
+
+- (void) setButtonImage:(NSString *)button withStyle:(NSString *)style toFunction:(id)function;
+- (void) setButtonTitle:(NSString *)button withStyle:(NSString *)style toFunction:(id)function;
+- (void) setFinishHook:(id)function;
+- (void) setPopupHook:(id)function;
+
+- (id) _rightButtonTitle;
+