I'm trying to make an app for a restaurant and the to display the food menu as a scrollable image. The image is pulled form a config file.

```
- (void)viewDidLoad
{
    [super viewDidLoad];
    // back button
    UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
    [button setImage:[UIImage imageNamed:@"btn-back.png"] forState:UIControlStateNormal];
    button.frame = CGRectMake(0.0f, 0.0f, 46.0f, 28.0f);
    [button addTarget:self action:@selector(back) forControlEvents:UIControlEventTouchUpInside];
    UIBarButtonItem *customBarItem = [[UIBarButtonItem alloc] initWithCustomView:button];
    self.navigationItem.leftBarButtonItem = customBarItem;
    [customBarItem release];

    [self setTitle:[menu objectForKey:@"title"]];
    [scrollView2 setScrollEnabled:YES];

    NSString *imageName = [menu objectForKey:@"imageName"];
    if (![imageName isEqualToString:@""]) {
        UIImage *image = [UIImage imageNamed:imageName];

        [imageView setImage:image];
        [scrollView2 addSubview:imageView];
        [imageView release];
    }
    [textView setText:[menu objectForKey:@"description"]];
}

```

As of now the image doesn't scroll, but appears as a static image. Could anyone please help me modify this code so the user can vertically scroll the image.
Thanks a lot.