// in viewDidLoad...
        var tapGestureRecognizer = UITapGestureRecognizer(target: self, action: "showToolbars")
        tapGestureRecognizer.cancelsTouchesInView = false
        scrollView.addGestureRecognizer(tapGestureRecognizer)

// somewhere else...
    func showToolbars() {
        UIView.animateWithDuration(1.0, delay: 0.0, options: UIViewAnimationOptions.CurveEaseOut, animations: {
            self.toolbar.frame = CGRectMake(0, self.view.frame.size.height-self.toolbar.frame.size.height, self.toolbar.frame.size.width, self.toolbar.frame.size.height)
            if self.ios7Patches!.verticalSizeClass == UIUserInterfaceSizeClass.Compact { // iPhone Horizontal
                self.navigationController.navigationBar.frame = CGRectMake(0, 0, self.navigationController.navigationBar.frame.size.width, self.navigationController.navigationBar.frame.size.height)
            } else {
                self.navigationController.navigationBar.frame = CGRectMake(0, 20, self.navigationController.navigationBar.frame.size.width, self.navigationController.navigationBar.frame.size.height)
            }
            }, completion: {(value: Bool) in})
        hideToolbarsTimer?.invalidate()
        hideToolbarsTimer = NSTimer.scheduledTimerWithTimeInterval(5.0, target: self, selector: "hideToolbars", userInfo: nil, repeats: false)
    }
    func hideToolbars() {
        hideToolbars(nil, delay: nil)
    }
    func hideToolbars(duration:NSTimeInterval?, delay:NSTimeInterval?) {
        var intDelay : NSTimeInterval
        if var thisDelay = delay {
            intDelay = thisDelay
        } else {
            intDelay = 0.0
        }
        var intDuration : NSTimeInterval
        if var thisDuration = duration {
            intDuration = thisDuration
        } else {
            intDuration = 1.0
        }
        UIView.animateWithDuration(intDuration, delay: intDelay, options: UIViewAnimationOptions.CurveEaseOut, animations: {
            self.toolbar.frame = CGRectMake(0, self.view.frame.size.height, self.toolbar.frame.size.width, self.toolbar.frame.size.height)
            self.navigationController.navigationBar.frame = CGRectMake(0, -(self.navigationController.navigationBar.frame.size.height), self.navigationController.navigationBar.frame.size.width, self.navigationController.navigationBar.frame.size.height)
            }, completion: {(value: Bool) in})
    }