UIBarButtonItem *infoButton = [
[UIBarButtonItem alloc]initWithTitle:@"about" style:UIBarButtonItemStyleDone target:self action:@selector(showMessage:)];
self.navigationItem.rightBarButtonItem = infoButton;
[infoButton release];
UIBarButtonItem *infoButton = [
[UIBarButtonItem alloc]initWithTitle:@"about" style:UIBarButtonItemStyleDone target:self action:@selector(showMessage:)];
self.navigationItem.rightBarButtonItem = infoButton;
[infoButton release];