let buttonBack: UIButton = UIButton.buttonWithType(UIButtonType.Custom) as! UIButton
        buttonBack.frame = CGRectMake(0, 0, 40, 40)
        buttonBack.setImage(UIImage(named:"back.png"), forState: UIControlState.Normal)

        let title = NSAttributedString(string: " Назад", attributes: [NSForegroundColorAttributeName : UIColor.greenColor()])
        buttonBack.setAttributedTitle(title, forState: UIControlState.Normal)
        buttonBack.addTarget(self, action: "back:", forControlEvents: UIControlEvents.TouchUpInside)

        var leftBarButtonItem: UIBarButtonItem = UIBarButtonItem(customView: buttonBack)

        self.navigationItem.setLeftBarButtonItem(leftBarButtonItem, animated: true)