     @IBOutlet weak var imageView: UIImageView!
     @IBOutlet weak var topConst: NSLayoutConstraint!
     
+    var backgroundView: UIView?
+    
     let menu = ["Vertretungsplan", "Klausuren", "Einstellungen", "Termine", "Lehrerliste", "Abmelden"]
 
     var slideController: FWSlideMenuController?

                self.imageView.alpha = 1
                self.label.alpha = 1
                self.tableView.alpha = 1
                self.topConst.constant = 4
                self.view.layoutIfNeeded()
            } else {
                self.imageView.alpha = 0
                self.tableView.alpha = 0
                self.label.alpha = 0
                self.topConst.constant = -46
                self.view.layoutIfNeeded()
            }
        }

        self.imageView.alpha = 1-progress
        self.label.alpha = 1-progress
        self.tableView.alpha = 1-progress
        self.topConst.constant = -50*progress + 15
        self.backgroundView?.frame.origin.x = 50*progress
        self.view.layoutIfNeeded()

    }
