private void DrawTimers(GUIStyle styleStats)
    {
      bool isSimulating = SimulationManager.IsSimulating();
      bool isReplaying  = SimulationManager.IsReplaying();
      bool isSimulatingOrReplaying = isSimulating || isReplaying;
      TimeSpan tRT;
      TimeSpan tSim;
      if (isSimulatingOrReplaying)
      {
        tRT  = TimeSpan.FromSeconds( SimulationManager.GetSimulatingRealTime() );
        tSim = TimeSpan.FromSeconds( SimulationManager.GetTimeSimulated() );


        SceneView.RepaintAll();
      }
      else
      {
        tRT  = TimeSpan.FromSeconds( 0 );
        tSim = TimeSpan.FromSeconds( 0 );
      }

      string tRTString = string.Format("{0:D2}h:{1:D2}m:{2:D2}s:{3:D3}ms", 
                                         tRT.Hours, 
                                         tRT.Minutes, 
                                         tRT.Seconds, 
                                         tRT.Milliseconds);
      EditorGUILayout.LabelField("Real time: ", tRTString, styleStats);

      string tSimString = string.Format("{0:D2}h:{1:D2}m:{2:D2}s:{3:D3}ms", 
                                         tSim.Hours, 
                                         tSim.Minutes, 
                                         tSim.Seconds, 
                                         tSim.Milliseconds);
      EditorGUILayout.LabelField("Simulated time: ", tSimString, styleStats);
    }