void OnViewChanged()
		{
			if (currentView == tabStrip.Current)
				return;

			if (currentView != null)
				currentView.Hide();

			if (null != (currentView = tabStrip.Current))
				currentView.Show();
		}
		public void Select(ViewBase v) { tabStrip.Select(v); }
		public void Add(ViewBase v) { tabStrip.Add(v); }