     private let interSpacing:CGFloat = 27
 	private var timer = NSTimer()
 	private var timerLastStarted = NSDate()
+    
+    enum Mode: Int {
+        case Easy = 0
+        case Hard = 1
+    }
 	
     private struct Insets {
         static var top:CGFloat = 100

				
				var defaultSize:CGFloat = 70
				
				if self.model.data.visSearchDifficulty == 1 { // Hard mode
					defaultSize = 54
				}
				

					self.isTraining = false
				}
				
				if self.model.data.visSearchDifficulty == Mode.Hard.rawValue {
					if self.currentView != VisualSearchHardModeView.TrainingOne.rawValue
                        && self.currentView != VisualSearchHardModeView.TrainingTwo.rawValue
                        && self.currentView != VisualSearchHardModeView.TrainingThree.rawValue {
