         previous.layoutRight.constant = 0
         bar.pop()
         
-        UIView.animate(withDuration:kAnimationDurantion, animations:
+        UIView.animate(withDuration:kAnimationDuration, animations:
         {
             self.layoutIfNeeded()
             previous.shadow?.minAlpha()

        parent.controllers.last?.addShadow()
        bar.push(name:controller.title)
        
        UIView.animate(withDuration:kAnimationDurantion, animations:
        {
            self.layoutIfNeeded()
            self.parent.controllers.last?.shadow?.maxAlpha()

        let countControllers:Int = parent.controllers.count
        let controller:CController = parent.controllers[countControllers - 1]
        
        UIView.animate(withDuration:kAnimationDuration, animations:
        {
            controller.view.alpha = 0
        })
