     // MARK: - IBActions
     //*****************************************************************
     
-    @IBAction func okayButtonPressed(sender: UIButton) {
-        navigationController?.popViewControllerAnimated(true)
+    @IBAction func okayButtonPressed(_ sender: UIButton) {
+        _ = navigationController?.popViewController(animated: true)
     }
     
 }

        // Display Station Image/Logo
        let imageURL = currentStation.stationImageURL
        
        if imageURL.rangeOfString("http") != nil {
            // Get station image from the web, iOS should cache the image
            if let url = NSURL(string: currentStation.stationImageURL) {
                downloadTask = stationImageView.loadImageWithURL(url) { _ in }
            }
            
        } else if imageURL != "" {

    @IBOutlet weak var okayButton: UIButton!
    
    var currentStation: RadioStation!
    var downloadTask: URLSessionDownloadTask?

    //*****************************************************************
    // MARK: - ViewDidLoad
