//—-fired when the user taps on the searchbar—-
- (void)searchBarTextDidBeginEditing:(UISearchBar *)searchBar {    
    isSearchOn = YES;
    canSelectRow = YES;
    
    if (searchBar.text.length>0){Local declaration of 'searchBar' hides instance variable
        self.tableView.scrollEnabled = YES;  
    } else {
        self.tableView.scrollEnabled = NO;
    }
    
    //—-add the Done button at the top—-
    self.navigationItem.rightBarButtonItem = 
    [[[UIBarButtonItem alloc] 
      initWithBarButtonSystemItem:UIBarButtonSystemItemDone
      target:self  
      action:@selector(doneSearching:)]
     autorelease];
}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{

    NSString *message;    
    if (isSearchOn && [searchResult count]>0) { 
        message = [[NSString alloc] initWithFormat:@"You have selected %@", 
                   [searchResult objectAtIndex:indexPath.row]];
    } else {
        NSString *year = [self.years objectAtIndex:[indexPath section]];
        NSArray *movieSection = [self.movieTitles objectForKey:year];
        NSString *movieTitle = [movieSection objectAtIndex:[indexPath row]];    
        message = [[NSString alloc] initWithFormat:@"You have selected %@", movieTitle];
    }

    
    if (!self.detailViewController) {
        self.detailViewController = [[[DetailViewController alloc] initWithNibName:@"DetailViewController" bundle:nil] autorelease];
    }
        
    //—-set the movie selected in the method of the
    // MovieDetailsViewController—-//
    self.detailViewController.detailItem = [message autorelease];
    
    [self.navigationController 
     pushViewController:self.detailViewController 
     animated:YES];
}