diff --git a/src/ATC/AIMgr.cxx b/src/ATC/AIMgr.cxx
index 871feb8b4..c0a6ec9a8 100644
--- a/src/ATC/AIMgr.cxx
+++ b/src/ATC/AIMgr.cxx
@@ -19,10 +19,10 @@
 // along with this program; if not, write to the Free Software
 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-#include <Main/fgfs.hxx>
+#include <simgear/misc/sg_path.hxx>
+
 #include <Main/fg_props.hxx>
 #include <Main/globals.hxx>
-#include <simgear/misc/sg_path.hxx>
 
 #include <list>
 
diff --git a/src/ATC/AIMgr.hxx b/src/ATC/AIMgr.hxx
index a186d1307..2c67eb020 100644
--- a/src/ATC/AIMgr.hxx
+++ b/src/ATC/AIMgr.hxx
@@ -22,7 +22,8 @@
 #ifndef _FG_AIMGR_HXX
 #define _FG_AIMGR_HXX
 
-#include <Main/fgfs.hxx>
+#include <simgear/structure/subsystem_mgr.hxx>
+
 #include <Main/fg_props.hxx>
 
 #include <list>
@@ -33,7 +34,7 @@
 SG_USING_STD(list);
 
 
-class FGAIMgr : public FGSubsystem
+class FGAIMgr : public SGSubsystem
 {
 
 private:
diff --git a/src/ATC/ATC.cxx b/src/ATC/ATC.cxx
index 2a51b89a5..d8fc4b737 100644
--- a/src/ATC/ATC.cxx
+++ b/src/ATC/ATC.cxx
@@ -24,7 +24,6 @@
 
 #include <simgear/sound/soundmgr.hxx>
 
-#include <Main/fgfs.hxx>
 #include <Main/fg_props.hxx>
 
 #include "ATC.hxx"
diff --git a/src/ATC/ATCDialog.cxx b/src/ATC/ATCDialog.cxx
index 9566e1da6..1a4aefa3f 100644
--- a/src/ATC/ATCDialog.cxx
+++ b/src/ATC/ATCDialog.cxx
@@ -18,10 +18,10 @@
 // along with this program; if not, write to the Free Software
 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
+#include <simgear/structure/commands.hxx>
+
 #include <Main/globals.hxx>
-#include <Main/fgfs.hxx>
 #include <GUI/gui.h>
-#include <simgear/misc/commands.hxx>
 
 #include "ATCDialog.hxx"
 #include "ATC.hxx"
diff --git a/src/ATC/ATCdisplay.hxx b/src/ATC/ATCdisplay.hxx
index ba50fd6c5..c41bb72f8 100644
--- a/src/ATC/ATCdisplay.hxx
+++ b/src/ATC/ATCdisplay.hxx
@@ -27,7 +27,7 @@
 #  include <config.h>
 #endif
 
-#include <Main/fgfs.hxx>
+#include <simgear/structure/subsystem_mgr.hxx>
 
 #include <vector>
 #include <string>
@@ -49,7 +49,7 @@ struct atcMessage {
 typedef vector<atcMessage> atcMessageList;
 typedef atcMessageList::iterator atcMessageListIterator;
 
-class FGATCDisplay : public FGSubsystem 
+class FGATCDisplay : public SGSubsystem 
 {
 
 private:
diff --git a/src/ATC/ATCmgr.cxx b/src/ATC/ATCmgr.cxx
index fca305417..fc300d1af 100644
--- a/src/ATC/ATCmgr.cxx
+++ b/src/ATC/ATCmgr.cxx
@@ -18,8 +18,6 @@
 // along with this program; if not, write to the Free Software
 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-//#include <Time/event.hxx>
-
 #include <simgear/misc/sg_path.hxx>
 #include <simgear/debug/logstream.hxx>
 #include <Airports/simple.hxx>
@@ -36,6 +34,7 @@ static void fgATCSearch( void ) {
 	globals->get_ATC_mgr()->Search();
 }
 */ //This wouldn't compile - including Time/event.hxx breaks it :-(
+   // Is this still true?? -EMH-
 
 AirportATC::AirportATC() :
     lon(0.0),
@@ -90,9 +89,12 @@ void FGATCMgr::init() {
 	atc_list_itr = atc_list.begin();
 	
 	// Search for connected ATC stations once per 0.8 seconds or so
-	// global_events.Register( "fgATCSearch()", fgATCSearch,
-	//		    fgEVENT::FG_EVENT_READY, 800);
+	// globals->get_event_mgr()->add( "fgATCSearch()", fgATCSearch,
+        //                                 FGEvent::FG_EVENT_READY, 800);
+        //  
 	// For some reason the above doesn't compile - including Time/event.hxx stops compilation.
+        // Is this still true after the reorganization of the event managar??
+        // -EMH-
 	
 	// Initialise the frequency search map
     current_commlist = new FGCommList;
diff --git a/src/ATC/ATCmgr.hxx b/src/ATC/ATCmgr.hxx
index 6c1960fe2..f4c363d0e 100644
--- a/src/ATC/ATCmgr.hxx
+++ b/src/ATC/ATCmgr.hxx
@@ -22,7 +22,8 @@
 #ifndef _FG_ATCMGR_HXX
 #define _FG_ATCMGR_HXX
 
-#include <Main/fgfs.hxx>
+#include <simgear/structure/subsystem_mgr.hxx>
+
 #include <Main/fg_props.hxx>
 #include <GUI/gui.h>
 
@@ -72,7 +73,7 @@ struct AirportATC {
     bool set_by_comm[2];	// true when the relevant comm_freq has activated this station
 };
 
-class FGATCMgr : public FGSubsystem
+class FGATCMgr : public SGSubsystem
 {
 
 private:
diff --git a/src/Aircraft/aircraft.cxx b/src/Aircraft/aircraft.cxx
index bfe7c81ba..1fe90e128 100644
--- a/src/Aircraft/aircraft.cxx
+++ b/src/Aircraft/aircraft.cxx
@@ -30,8 +30,8 @@
 #include <simgear/constants.h>
 #include <simgear/debug/logstream.hxx>
 #include <simgear/misc/sg_path.hxx>
-#include <simgear/misc/commands.hxx>
-#include <simgear/misc/exception.hxx>
+#include <simgear/structure/commands.hxx>
+#include <simgear/structure/exception.hxx>
 
 #include <Main/globals.hxx>
 #include <Main/fg_props.hxx>
@@ -41,7 +41,6 @@
 #include <Cockpit/panel_io.hxx>
 #include <Model/acmodel.hxx>
 #include <Autopilot/newauto.hxx>
-#include <Main/fgfs.hxx>
 
 #include "aircraft.hxx"
 
diff --git a/src/Autopilot/newauto.hxx b/src/Autopilot/newauto.hxx
index 9e95c7278..49e88c451 100644
--- a/src/Autopilot/newauto.hxx
+++ b/src/Autopilot/newauto.hxx
@@ -28,13 +28,13 @@
 
 
 #include <simgear/props/props.hxx>
+#include <simgear/structure/subsystem_mgr.hxx>
 #include <simgear/route/waypoint.hxx>
 
-#include <Main/fgfs.hxx>
 #include <Main/fg_props.hxx>
 
 // Structures
-class FGAutopilot : public FGSubsystem
+class FGAutopilot : public SGSubsystem
 {
 
 public:
@@ -165,7 +165,7 @@ public:
 
 
     ////////////////////////////////////////////////////////////////////
-    // Implementation of FGSubsystem.
+    // Implementation of SGSubsystem.
     ////////////////////////////////////////////////////////////////////
 
     void init ();
diff --git a/src/Cockpit/dme.cxx b/src/Cockpit/dme.cxx
index aa07a7559..7fe470c9f 100644
--- a/src/Cockpit/dme.cxx
+++ b/src/Cockpit/dme.cxx
@@ -34,7 +34,6 @@
 #include <Navaids/ilslist.hxx>
 #include <Navaids/mkrbeacons.hxx>
 #include <Navaids/navlist.hxx>
-#include <Time/FGEventMgr.hxx>
 
 #include "dme.hxx"
 
diff --git a/src/Cockpit/dme.hxx b/src/Cockpit/dme.hxx
index e16acfe7e..5b1483fc5 100644
--- a/src/Cockpit/dme.hxx
+++ b/src/Cockpit/dme.hxx
@@ -25,11 +25,10 @@
 #define _FG_DME_HXX
 
 
-#include <Main/fgfs.hxx>
 #include <Main/fg_props.hxx>
 
 #include <simgear/compiler.h>
-
+#include <simgear/structure/subsystem_mgr.hxx>
 // #include <simgear/math/interpolater.hxx>
 #include <simgear/timing/timestamp.hxx>
 
@@ -42,7 +41,7 @@
 // #include "kt_70.hxx"            // Transponder
 // #include "navcom.hxx"
 
-class FGDME : public FGSubsystem
+class FGDME : public SGSubsystem
 {
     SGPropertyNode *lon_node;
     SGPropertyNode *lat_node;
diff --git a/src/Cockpit/hud.cxx b/src/Cockpit/hud.cxx
index 10762dbd8..3b3285dfa 100644
--- a/src/Cockpit/hud.cxx
+++ b/src/Cockpit/hud.cxx
@@ -21,7 +21,7 @@
 // $Id$
 
 #include <simgear/compiler.h>
-#include <simgear/misc/exception.hxx>
+#include <simgear/structure/exception.hxx>
 
 #include STL_STRING
 #include STL_FSTREAM
diff --git a/src/Cockpit/kr_87.cxx b/src/Cockpit/kr_87.cxx
index 34489803c..94e7acca3 100644
--- a/src/Cockpit/kr_87.cxx
+++ b/src/Cockpit/kr_87.cxx
@@ -32,7 +32,6 @@
 
 #include <Aircraft/aircraft.hxx>
 #include <Navaids/navlist.hxx>
-#include <Time/FGEventMgr.hxx>
 
 #include "kr_87.hxx"
 
diff --git a/src/Cockpit/kr_87.hxx b/src/Cockpit/kr_87.hxx
index 77ec6d4a8..b056f5e8d 100644
--- a/src/Cockpit/kr_87.hxx
+++ b/src/Cockpit/kr_87.hxx
@@ -25,18 +25,17 @@
 #define _FG_KR_87_HXX
 
 
-#include <Main/fgfs.hxx>
 #include <Main/fg_props.hxx>
 
 #include <simgear/compiler.h>
-
+#include <simgear/structure/subsystem_mgr.hxx>
 #include <simgear/timing/timestamp.hxx>
 
 #include <Navaids/navlist.hxx>
 #include <Sound/morse.hxx>
 
 
-class FGKR_87 : public FGSubsystem
+class FGKR_87 : public SGSubsystem
 {
     FGMorse morse;
 
diff --git a/src/Cockpit/kt_70.hxx b/src/Cockpit/kt_70.hxx
index 8355bdd16..7fdb649e1 100644
--- a/src/Cockpit/kt_70.hxx
+++ b/src/Cockpit/kt_70.hxx
@@ -25,11 +25,10 @@
 #define _FG_KT_70_HXX
 
 
-#include <Main/fgfs.hxx>
 #include <Main/fg_props.hxx>
 
 #include <simgear/compiler.h>
-
+#include <simgear/structure/subsystem_mgr.hxx>
 #include <simgear/math/interpolater.hxx>
 #include <simgear/timing/timestamp.hxx>
 
@@ -38,7 +37,7 @@
 #include <Sound/morse.hxx>
 
 
-class FGKT_70 : public FGSubsystem
+class FGKT_70 : public SGSubsystem
 {
     SGPropertyNode *lon_node;
     SGPropertyNode *lat_node;
diff --git a/src/Cockpit/marker_beacon.cxx b/src/Cockpit/marker_beacon.cxx
index b668f550e..88e3e0370 100644
--- a/src/Cockpit/marker_beacon.cxx
+++ b/src/Cockpit/marker_beacon.cxx
@@ -32,7 +32,6 @@
 
 #include <Aircraft/aircraft.hxx>
 #include <Navaids/mkrbeacons.hxx>
-#include <Time/FGEventMgr.hxx>
 
 #include "marker_beacon.hxx"
 
diff --git a/src/Cockpit/marker_beacon.hxx b/src/Cockpit/marker_beacon.hxx
index 6182f2759..aa6d930bf 100644
--- a/src/Cockpit/marker_beacon.hxx
+++ b/src/Cockpit/marker_beacon.hxx
@@ -25,11 +25,10 @@
 #define _FG_MARKER_BEACON_HXX
 
 
-#include <Main/fgfs.hxx>
 #include <Main/fg_props.hxx>
 
 #include <simgear/compiler.h>
-
+#include <simgear/structure/subsystem_mgr.hxx>
 #include <simgear/math/interpolater.hxx>
 #include <simgear/timing/timestamp.hxx>
 
@@ -37,7 +36,7 @@
 #include <Sound/morse.hxx>
 
 
-class FGMarkerBeacon : public FGSubsystem
+class FGMarkerBeacon : public SGSubsystem
 {
     FGBeacon beacon;
     FGMorse morse;
diff --git a/src/Cockpit/navcom.cxx b/src/Cockpit/navcom.cxx
index 9fe214a51..a3525f5e4 100644
--- a/src/Cockpit/navcom.cxx
+++ b/src/Cockpit/navcom.cxx
@@ -34,7 +34,6 @@
 #include <Aircraft/aircraft.hxx>
 #include <Navaids/ilslist.hxx>
 #include <Navaids/navlist.hxx>
-#include <Time/FGEventMgr.hxx>
 
 #include "navcom.hxx"
 
diff --git a/src/Cockpit/navcom.hxx b/src/Cockpit/navcom.hxx
index 5e6434aee..b05a2f9c4 100644
--- a/src/Cockpit/navcom.hxx
+++ b/src/Cockpit/navcom.hxx
@@ -25,11 +25,10 @@
 #define _FG_NAVCOM_HXX
 
 
-#include <Main/fgfs.hxx>
 #include <Main/fg_props.hxx>
 
 #include <simgear/compiler.h>
-
+#include <simgear/structure/subsystem_mgr.hxx>
 #include <simgear/math/interpolater.hxx>
 #include <simgear/timing/timestamp.hxx>
 
@@ -37,7 +36,7 @@
 #include <Navaids/navlist.hxx>
 #include <Sound/morse.hxx>
 
-class FGNavCom : public FGSubsystem
+class FGNavCom : public SGSubsystem
 {
     FGMorse morse;
 
diff --git a/src/Cockpit/panel.hxx b/src/Cockpit/panel.hxx
index d39a2a2d5..624ccfc16 100644
--- a/src/Cockpit/panel.hxx
+++ b/src/Cockpit/panel.hxx
@@ -30,26 +30,24 @@
 #  include <config.h>
 #endif
 
-#include <simgear/compiler.h>
-
-#ifdef HAVE_WINDOWS_H          
+#ifdef HAVE_WINDOWS_H
 #  include <windows.h>
 #endif
 
 #include <plib/ssg.h>
+#include <plib/fnt.h>
 
-#include <simgear/math/interpolater.hxx>
+#include <simgear/compiler.h>
 #include <simgear/props/props.hxx>
+#include <simgear/structure/subsystem_mgr.hxx>
+#include <simgear/math/interpolater.hxx>
 #include <simgear/timing/timestamp.hxx>
 
 #include <cmath>
 #include <vector>
 #include <map>
-#include <plib/fnt.h>
 
-#include <Main/fgfs.hxx>
 #include <Main/fg_props.hxx>
-
 #include <Input/input.hxx>
 
 SG_USING_STD(vector);
@@ -130,7 +128,7 @@ private:
  * redraw themselves when necessary, and will pass mouse clicks on to
  * the appropriate instruments for processing.
  */
-class FGPanel : public FGSubsystem
+class FGPanel : public SGSubsystem
 {
 public:
 
diff --git a/src/Cockpit/panel_io.cxx b/src/Cockpit/panel_io.cxx
index 28435e20f..e24aafc62 100644
--- a/src/Cockpit/panel_io.cxx
+++ b/src/Cockpit/panel_io.cxx
@@ -29,8 +29,7 @@
 #include <string.h>		// for strcmp()
 
 #include <simgear/compiler.h>
-#include <simgear/misc/exception.hxx>
-
+#include <simgear/structure/exception.hxx>
 #include <simgear/debug/logstream.hxx>
 #include <simgear/misc/sg_path.hxx>
 #include <simgear/props/props.hxx>
diff --git a/src/Cockpit/radiostack.cxx b/src/Cockpit/radiostack.cxx
index 6566daf7e..9af2567dc 100644
--- a/src/Cockpit/radiostack.cxx
+++ b/src/Cockpit/radiostack.cxx
@@ -34,7 +34,6 @@
 #include <Navaids/ilslist.hxx>
 #include <Navaids/mkrbeacons.hxx>
 #include <Navaids/navlist.hxx>
-#include <Time/FGEventMgr.hxx>
 
 #include "radiostack.hxx"
 
@@ -78,9 +77,8 @@ FGRadioStack::init ()
     update(0);			// FIXME: use dt
 
     // Search radio database once per second
-    global_events.Register( "fgRadioSearch()",
-			    current_radiostack, &FGRadioStack::search,
-			    1000 );
+    globals->get_event_mgr()->add( "fgRadioSearch()", current_radiostack,
+                                   &FGRadioStack::search, 1000 );
 }
 
 
diff --git a/src/Cockpit/radiostack.hxx b/src/Cockpit/radiostack.hxx
index 42093a4a6..4d2255214 100644
--- a/src/Cockpit/radiostack.hxx
+++ b/src/Cockpit/radiostack.hxx
@@ -25,11 +25,10 @@
 #define _FG_RADIOSTACK_HXX
 
 
-#include <Main/fgfs.hxx>
 #include <Main/fg_props.hxx>
 
 #include <simgear/compiler.h>
-
+#include <simgear/structure/subsystem_mgr.hxx>
 #include <simgear/math/interpolater.hxx>
 #include <simgear/timing/timestamp.hxx>
 
@@ -45,7 +44,7 @@
 #include "navcom.hxx"
 
 
-class FGRadioStack : public FGSubsystem
+class FGRadioStack : public SGSubsystem
 {
     FGDME dme;
     FGKR_87 adf;                // King KR 87 Digital ADF model
diff --git a/src/Controls/controls.hxx b/src/Controls/controls.hxx
index 2e467a5ae..2f70b38f0 100644
--- a/src/Controls/controls.hxx
+++ b/src/Controls/controls.hxx
@@ -25,8 +25,8 @@
 #define _CONTROLS_HXX
 
 #include <simgear/props/props.hxx>
+#include <simgear/structure/subsystem_mgr.hxx>
 
-#include <Main/fgfs.hxx>
 #include <Main/globals.hxx>
 
 #ifndef __cplusplus                                                          
@@ -36,7 +36,7 @@
 
 // Define a structure containing the control parameters
 
-class FGControls : public FGSubsystem
+class FGControls : public SGSubsystem
 {
 
 public:
@@ -240,7 +240,7 @@ public:
     FGControls();
     ~FGControls();
 
-    // Implementation of FGSubsystem.
+    // Implementation of SGSubsystem.
     void init ();
     void bind ();
     void unbind ();
diff --git a/src/Environment/environment.hxx b/src/Environment/environment.hxx
index dafea47cf..73320de1e 100644
--- a/src/Environment/environment.hxx
+++ b/src/Environment/environment.hxx
@@ -26,8 +26,6 @@
 
 #include <simgear/compiler.h>
 
-#include <Main/fgfs.hxx>
-
 #ifdef SG_HAVE_STD_INCLUDES
 #  include <cmath>
 #else
diff --git a/src/Environment/environment_ctrl.hxx b/src/Environment/environment_ctrl.hxx
index f9e0d5930..75a8a00a7 100644
--- a/src/Environment/environment_ctrl.hxx
+++ b/src/Environment/environment_ctrl.hxx
@@ -24,6 +24,7 @@
 #define _ENVIRONMENT_CTRL_HXX
 
 #include <simgear/compiler.h>
+#include <simgear/structure/subsystem_mgr.hxx>
 
 #ifdef SG_HAVE_STD_INCLUDES
 #  include <cmath>
@@ -37,8 +38,6 @@ SG_USING_STD(vector);
 
 class SGPropertyNode;
 
-#include <Main/fgfs.hxx>
-
 #include "environment.hxx"
 
 
@@ -46,7 +45,7 @@ class SGPropertyNode;
 /**
  * Interface to control environment information for a specific location.
  */
-class FGEnvironmentCtrl : public FGSubsystem
+class FGEnvironmentCtrl : public SGSubsystem
 {
 
 public:
diff --git a/src/Environment/environment_mgr.cxx b/src/Environment/environment_mgr.cxx
index 48690bafe..08984463a 100644
--- a/src/Environment/environment_mgr.cxx
+++ b/src/Environment/environment_mgr.cxx
@@ -50,7 +50,7 @@ void
 FGEnvironmentMgr::init ()
 {
   SG_LOG( SG_GENERAL, SG_INFO, "Initializing environment subsystem");
-  FGSubsystemGroup::init();
+  SGSubsystemGroup::init();
   _update_fdm();
 }
 
@@ -58,7 +58,7 @@ void
 FGEnvironmentMgr::reinit ()
 {
   SG_LOG( SG_GENERAL, SG_INFO, "Reinitializing environment subsystem");
-  FGSubsystemGroup::reinit();
+  SGSubsystemGroup::reinit();
   _update_fdm();
 }
 
@@ -176,7 +176,7 @@ FGEnvironmentMgr::unbind ()
 void
 FGEnvironmentMgr::update (double dt)
 {
-  FGSubsystemGroup::update(dt);
+  SGSubsystemGroup::update(dt);
 
 				// FIXME: the FDMs should update themselves
   current_aircraft.fdm_state
diff --git a/src/Environment/environment_mgr.hxx b/src/Environment/environment_mgr.hxx
index 33204bc60..abef848f5 100644
--- a/src/Environment/environment_mgr.hxx
+++ b/src/Environment/environment_mgr.hxx
@@ -24,8 +24,7 @@
 #define _ENVIRONMENT_MGR_HXX
 
 #include <simgear/compiler.h>
-
-#include <Main/fgfs.hxx>
+#include <simgear/structure/subsystem_mgr.hxx>
 
 #ifdef SG_HAVE_STD_INCLUDES
 #  include <cmath>
@@ -40,7 +39,7 @@ class FGEnvironmentCtrl;
 /**
  * Manage environment information.
  */
-class FGEnvironmentMgr : public FGSubsystemGroup
+class FGEnvironmentMgr : public SGSubsystemGroup
 {
 
 public:
diff --git a/src/FDM/flight.hxx b/src/FDM/flight.hxx
index 810ec38b8..6ecd8730c 100644
--- a/src/FDM/flight.hxx
+++ b/src/FDM/flight.hxx
@@ -81,16 +81,15 @@
  */
 
 
-#include <simgear/compiler.h>
-
 #include <math.h>
 
 #include <list>
 #include <vector>
 #include <string>
 
+#include <simgear/compiler.h>
 #include <simgear/constants.h>
-#include <Main/fgfs.hxx>
+#include <simgear/structure/subsystem_mgr.hxx>
 
 SG_USING_STD(list);
 SG_USING_STD(vector);
@@ -102,7 +101,7 @@ class FGAircraftModel;
 typedef double FG_VECTOR_3[3];
 
 // This is based heavily on LaRCsim/ls_generic.h
-class FGInterface : public FGSubsystem {
+class FGInterface : public SGSubsystem {
 
 private:
   
diff --git a/src/GUI/gui.cxx b/src/GUI/gui.cxx
index 42272e865..4f07a7049 100644
--- a/src/GUI/gui.cxx
+++ b/src/GUI/gui.cxx
@@ -34,7 +34,7 @@
 #  include <windows.h>
 #endif
 
-#include <simgear/misc/exception.hxx>
+#include <simgear/structure/exception.hxx>
 #include <simgear/misc/sg_path.hxx>
 #include <simgear/props/props.hxx>
 #include <simgear/props/props_io.hxx>
diff --git a/src/GUI/gui.h b/src/GUI/gui.h
index 18794e5a7..33bf3def5 100644
--- a/src/GUI/gui.h
+++ b/src/GUI/gui.h
@@ -37,7 +37,7 @@
 
 #include <plib/pu.h>		// plib include
 
-#include <simgear/misc/exception.hxx>
+#include <simgear/structure/exception.hxx>
 
 #define TR_HIRES_SNAP   1
 
diff --git a/src/GUI/new_gui.cxx b/src/GUI/new_gui.cxx
index 63f41cba9..f6e087ca9 100644
--- a/src/GUI/new_gui.cxx
+++ b/src/GUI/new_gui.cxx
@@ -6,7 +6,8 @@
 #include <plib/ul.h>
 
 #include <simgear/compiler.h>
-#include <simgear/misc/exception.hxx>
+#include <simgear/structure/exception.hxx>
+
 #include <Main/fg_props.hxx>
 
 #include "menubar.hxx"
diff --git a/src/GUI/new_gui.hxx b/src/GUI/new_gui.hxx
index 35cc3d831..c0cda22b3 100644
--- a/src/GUI/new_gui.hxx
+++ b/src/GUI/new_gui.hxx
@@ -11,6 +11,7 @@
 
 #include <simgear/compiler.h>	// for SG_USING_STD
 #include <simgear/props/props.hxx>
+#include <simgear/structure/subsystem_mgr.hxx>
 
 #include <vector>
 SG_USING_STD(vector);
@@ -18,7 +19,6 @@ SG_USING_STD(vector);
 #include <map>
 SG_USING_STD(map);
 
-#include <Main/fgfs.hxx>
 #include <Main/fg_props.hxx>
 
 class FGMenuBar;
@@ -35,7 +35,7 @@ class FGBinding;
  * for XML-configured dialog boxes found in $FG_ROOT/gui/dialogs/.  It
  * can show or hide the menubar, and can display any dialog by name.
  */
-class NewGUI : public FGSubsystem
+class NewGUI : public SGSubsystem
 {
 public:
 
diff --git a/src/GUI/preset_dlg.cxx b/src/GUI/preset_dlg.cxx
index 97e9f9803..d13ad4787 100644
--- a/src/GUI/preset_dlg.cxx
+++ b/src/GUI/preset_dlg.cxx
@@ -31,7 +31,7 @@
 #  include <windows.h>
 #endif
 
-#include <simgear/misc/commands.hxx>
+#include <simgear/structure/commands.hxx>
 #include <simgear/misc/sg_path.hxx>
 
 #include <Main/fg_props.hxx>
diff --git a/src/Include/Makefile.am b/src/Include/Makefile.am
index fd432745d..6764b99aa 100644
--- a/src/Include/Makefile.am
+++ b/src/Include/Makefile.am
@@ -3,7 +3,6 @@ EXTRA_DIST = \
 	config.h.in \
 	config.h-msvc6 \
 	cmdargs.h \
-	fg_callback.hxx \
 	fg_typedefs.h \
 	fg_stl_config.h \
 	general.hxx
diff --git a/src/Input/input.hxx b/src/Input/input.hxx
index 690619ec3..c3f980f0d 100644
--- a/src/Input/input.hxx
+++ b/src/Input/input.hxx
@@ -32,11 +32,11 @@
 
 #include <simgear/compiler.h>
 
-#include <simgear/misc/commands.hxx>
+#include <simgear/structure/subsystem_mgr.hxx>
+#include <simgear/structure/commands.hxx>
 #include <simgear/props/condition.hxx>
 #include <simgear/props/props.hxx>
 
-#include <Main/fgfs.hxx>
 #include <Main/fg_props.hxx>
 #include <Main/globals.hxx>
 
@@ -166,7 +166,7 @@ private:
  * keyboard, joystick, mouse, or even panel switches -- in a consistent
  * way, and to allow users to rebind any of the actions at runtime.</p>
  */
-class FGInput : public FGSubsystem
+class FGInput : public SGSubsystem
 {
 public:
 
@@ -192,7 +192,7 @@ public:
   virtual ~FGInput();
 
   //
-  // Implementation of FGSubsystem.
+  // Implementation of SGSubsystem.
   //
   virtual void init ();
   virtual void update (double dt);
diff --git a/src/Instrumentation/airspeed_indicator.hxx b/src/Instrumentation/airspeed_indicator.hxx
index 8f0cfd45d..0572a0eb1 100644
--- a/src/Instrumentation/airspeed_indicator.hxx
+++ b/src/Instrumentation/airspeed_indicator.hxx
@@ -12,8 +12,7 @@
 #endif
 
 #include <simgear/props/props.hxx>
-
-#include <Main/fgfs.hxx>
+#include <simgear/structure/subsystem_mgr.hxx>
 
 
 /**
@@ -30,7 +29,7 @@
  *
  * /instrumentation/airspeed-indicator/indicated-speed-kt
  */
-class AirspeedIndicator : public FGSubsystem
+class AirspeedIndicator : public SGSubsystem
 {
 
 public:
diff --git a/src/Instrumentation/altimeter.hxx b/src/Instrumentation/altimeter.hxx
index 0615e021a..73c1c2c02 100644
--- a/src/Instrumentation/altimeter.hxx
+++ b/src/Instrumentation/altimeter.hxx
@@ -12,7 +12,7 @@
 #endif
 
 #include <simgear/props/props.hxx>
-#include <Main/fgfs.hxx>
+#include <simgear/structure/subsystem_mgr.hxx>
 
 
 class SGInterpTable;
@@ -31,7 +31,7 @@ class SGInterpTable;
  *
  * /instrumentation/altimeter/indicated-altitude-ft
  */
-class Altimeter : public FGSubsystem
+class Altimeter : public SGSubsystem
 {
 
 public:
diff --git a/src/Instrumentation/annunciator.hxx b/src/Instrumentation/annunciator.hxx
index 8938de4c4..2834f8c25 100644
--- a/src/Instrumentation/annunciator.hxx
+++ b/src/Instrumentation/annunciator.hxx
@@ -10,8 +10,7 @@
 #endif
 
 #include <simgear/props/props.hxx>
-
-#include <Main/fgfs.hxx>
+#include <simgear/structure/subsystem_mgr.hxx>
 
 
 /**
@@ -28,7 +27,7 @@
  *
  * /instrumentation/airspeed-indicator/indicated-speed-kt
  */
-class Annunciator : public FGSubsystem
+class Annunciator : public SGSubsystem
 {
 
     // timers
diff --git a/src/Instrumentation/attitude_indicator.hxx b/src/Instrumentation/attitude_indicator.hxx
index db68dd98b..b71e742c2 100644
--- a/src/Instrumentation/attitude_indicator.hxx
+++ b/src/Instrumentation/attitude_indicator.hxx
@@ -12,8 +12,7 @@
 #endif
 
 #include <simgear/props/props.hxx>
-
-#include <Main/fgfs.hxx>
+#include <simgear/structure/subsystem_mgr.hxx>
 
 #include "gyro.hxx"
 
@@ -39,7 +38,7 @@
  * /instrumentation/attitude-indicator/indicated-roll-deg
  * /instrumentation/attitude-indicator/tumble-norm
  */
-class AttitudeIndicator : public FGSubsystem
+class AttitudeIndicator : public SGSubsystem
 {
 
 public:
diff --git a/src/Instrumentation/clock.hxx b/src/Instrumentation/clock.hxx
index 25fcd659f..0e35f0441 100644
--- a/src/Instrumentation/clock.hxx
+++ b/src/Instrumentation/clock.hxx
@@ -14,8 +14,7 @@
 #endif
 
 #include <simgear/props/props.hxx>
-
-#include <Main/fgfs.hxx>
+#include <simgear/structure/subsystem_mgr.hxx>
 
 
 /**
@@ -31,7 +30,7 @@
  * /instrumentation/clock/indicated-sec
  * /instrumentation/clock/indicated-string
  */
-class Clock : public FGSubsystem
+class Clock : public SGSubsystem
 {
 
 public:
diff --git a/src/Instrumentation/dme.hxx b/src/Instrumentation/dme.hxx
index c70c43ab8..39fbf2eaa 100644
--- a/src/Instrumentation/dme.hxx
+++ b/src/Instrumentation/dme.hxx
@@ -13,8 +13,7 @@
 
 #include <simgear/math/point3d.hxx>
 #include <simgear/props/props.hxx>
-
-#include <Main/fgfs.hxx>
+#include <simgear/structure/subsystem_mgr.hxx>
 
 
 /**
@@ -37,7 +36,7 @@
  * /instrumentation/dme/indicated-ground-speed-kt
  * /instrumentation/dme/indicated-time-kt
  */
-class DME : public FGSubsystem
+class DME : public SGSubsystem
 {
 
 public:
diff --git a/src/Instrumentation/gps.hxx b/src/Instrumentation/gps.hxx
index 78025aae2..72578c61c 100644
--- a/src/Instrumentation/gps.hxx
+++ b/src/Instrumentation/gps.hxx
@@ -12,8 +12,7 @@
 #endif
 
 #include <simgear/props/props.hxx>
-
-#include <Main/fgfs.hxx>
+#include <simgear/structure/subsystem_mgr.hxx>
 
 
 /**
@@ -37,7 +36,7 @@
  * /instrumentation/gps/indicated-track-magnetic-deg
  * /instrumentation/gps/indicated-ground-speed-kt
  */
-class GPS : public FGSubsystem
+class GPS : public SGSubsystem
 {
 
 public:
diff --git a/src/Instrumentation/heading_indicator.hxx b/src/Instrumentation/heading_indicator.hxx
index 908495adc..75b1bc5c3 100644
--- a/src/Instrumentation/heading_indicator.hxx
+++ b/src/Instrumentation/heading_indicator.hxx
@@ -12,8 +12,7 @@
 #endif
 
 #include <simgear/props/props.hxx>
-
-#include <Main/fgfs.hxx>
+#include <simgear/structure/subsystem_mgr.hxx>
 
 #include "gyro.hxx"
 
@@ -35,7 +34,7 @@
  *
  * /instrumentation/heading-indicator/indicated-heading-deg
  */
-class HeadingIndicator : public FGSubsystem
+class HeadingIndicator : public SGSubsystem
 {
 
 public:
diff --git a/src/Instrumentation/instrument_mgr.hxx b/src/Instrumentation/instrument_mgr.hxx
index f040e26c2..11649adab 100644
--- a/src/Instrumentation/instrument_mgr.hxx
+++ b/src/Instrumentation/instrument_mgr.hxx
@@ -16,8 +16,7 @@
 #endif
 
 #include <simgear/compiler.h>
-
-#include <Main/fgfs.hxx>
+#include <simgear/structure/subsystem_mgr.hxx>
 
 
 /**
@@ -26,7 +25,7 @@
  * In the initial draft, the instruments present are hard-coded, but they
  * will soon be configurable for individual aircraft.
  */
-class FGInstrumentMgr : public FGSubsystemGroup
+class FGInstrumentMgr : public SGSubsystemGroup
 {
 public:
 
diff --git a/src/Instrumentation/mag_compass.hxx b/src/Instrumentation/mag_compass.hxx
index f16a22287..8f7aafe27 100644
--- a/src/Instrumentation/mag_compass.hxx
+++ b/src/Instrumentation/mag_compass.hxx
@@ -12,8 +12,7 @@
 #endif
 
 #include <simgear/props/props.hxx>
-
-#include <Main/fgfs.hxx>
+#include <simgear/structure/subsystem_mgr.hxx>
 
 
 /**
@@ -34,7 +33,7 @@
  *
  * /instrumentation/magnetic-compass/indicated-heading-deg
  */
-class MagCompass : public FGSubsystem
+class MagCompass : public SGSubsystem
 {
 
 public:
diff --git a/src/Instrumentation/slip_skid_ball.hxx b/src/Instrumentation/slip_skid_ball.hxx
index d3e3e076b..d8ed245c0 100644
--- a/src/Instrumentation/slip_skid_ball.hxx
+++ b/src/Instrumentation/slip_skid_ball.hxx
@@ -12,8 +12,7 @@
 #endif
 
 #include <simgear/props/props.hxx>
-
-#include <Main/fgfs.hxx>
+#include <simgear/structure/subsystem_mgr.hxx>
 
 #include "gyro.hxx"
 
@@ -31,7 +30,7 @@
  *
  * /instrumentation/slip-skid-ball/indicated-slip-skid
  */
-class SlipSkidBall : public FGSubsystem
+class SlipSkidBall : public SGSubsystem
 {
 
 public:
diff --git a/src/Instrumentation/turn_indicator.hxx b/src/Instrumentation/turn_indicator.hxx
index 89681cfea..5d5028cf1 100644
--- a/src/Instrumentation/turn_indicator.hxx
+++ b/src/Instrumentation/turn_indicator.hxx
@@ -12,8 +12,7 @@
 #endif
 
 #include <simgear/props/props.hxx>
-
-#include <Main/fgfs.hxx>
+#include <simgear/structure/subsystem_mgr.hxx>
 
 #include "gyro.hxx"
 
@@ -36,7 +35,7 @@
  *
  * /instrumentation/turn-indicator/indicated-turn-rate
  */
-class TurnIndicator : public FGSubsystem
+class TurnIndicator : public SGSubsystem
 {
 
 public:
diff --git a/src/Instrumentation/vertical_speed_indicator.hxx b/src/Instrumentation/vertical_speed_indicator.hxx
index 007d8ace5..f7df642e8 100644
--- a/src/Instrumentation/vertical_speed_indicator.hxx
+++ b/src/Instrumentation/vertical_speed_indicator.hxx
@@ -12,8 +12,7 @@
 #endif
 
 #include <simgear/props/props.hxx>
-
-#include <Main/fgfs.hxx>
+#include <simgear/structure/subsystem_mgr.hxx>
 
 
 /**
@@ -28,7 +27,7 @@
  *
  * /instrumentation/vertical-speed-indicator/indicated-speed-fpm
  */
-class VerticalSpeedIndicator : public FGSubsystem
+class VerticalSpeedIndicator : public SGSubsystem
 {
 
 public:
diff --git a/src/Main/Makefile.am b/src/Main/Makefile.am
index 0a5134b1f..a5492ddb0 100644
--- a/src/Main/Makefile.am
+++ b/src/Main/Makefile.am
@@ -54,7 +54,6 @@ libMain_a_SOURCES = \
 	fg_init.cxx fg_init.hxx \
 	fg_io.cxx fg_io.hxx \
 	fg_props.cxx fg_props.hxx \
-        fgfs.cxx fgfs.hxx \
 	globals.cxx globals.hxx \
         logger.cxx logger.hxx \
 	options.cxx options.hxx \
@@ -102,7 +101,7 @@ fgfs_LDADD = \
 	$(CLOUD3D_LIBS) \
 	-lsgroute -lsgsky -lsgsound -lsgephem -lsgmaterial -lsgtgdb -lsgmodel \
 	-lsgtiming -lsgio -lsgscreen -lsgmath -lsgbucket -lsgprops -lsgdebug \
-	-lsgmagvar -lsgmisc -lsgxml -lsgsound -lsgserial \
+	-lsgmagvar -lsgmisc -lsgxml -lsgsound -lsgserial -lsgstructure \
 	$(THREAD_LIBS) \
 	-lplibpu -lplibfnt -lplibjs -lplibnet -lplibssg -lplibsg -lplibul \
 	$(network_LIBS) \
diff --git a/src/Main/bootstrap.cxx b/src/Main/bootstrap.cxx
index 6ee3eb150..588f1ab07 100644
--- a/src/Main/bootstrap.cxx
+++ b/src/Main/bootstrap.cxx
@@ -33,7 +33,7 @@
 #include <stdlib.h>
 
 #include <simgear/compiler.h>
-#include <simgear/misc/exception.hxx>
+#include <simgear/structure/exception.hxx>
 #include <simgear/debug/logstream.hxx>
 
 #include STL_IOSTREAM
diff --git a/src/Main/fg_commands.cxx b/src/Main/fg_commands.cxx
index 69ab356f3..6769654f5 100644
--- a/src/Main/fg_commands.cxx
+++ b/src/Main/fg_commands.cxx
@@ -3,7 +3,6 @@
 #include <string.h>		// strcmp()
 
 #include <simgear/compiler.h>
-#include <simgear/misc/exception.hxx>
 
 #include STL_STRING
 #include STL_FSTREAM
@@ -11,7 +10,8 @@
 #include <simgear/sg_inlines.h>
 #include <simgear/debug/logstream.hxx>
 #include <simgear/math/sg_random.h>
-#include <simgear/misc/commands.hxx>
+#include <simgear/structure/exception.hxx>
+#include <simgear/structure/commands.hxx>
 #include <simgear/props/props.hxx>
 
 #include <Cockpit/panel.hxx>
@@ -202,7 +202,7 @@ do_reinit (const SGPropertyNode * arg)
     } else {
         for ( unsigned int i = 0; i < subsystems.size(); i++ ) {
             const char * name = subsystems[i]->getStringValue();
-            FGSubsystem * subsystem = globals->get_subsystem(name);
+            SGSubsystem * subsystem = globals->get_subsystem(name);
             if (subsystem == 0) {
                 result = false;
                 SG_LOG( SG_GENERAL, SG_ALERT,
@@ -213,6 +213,8 @@ do_reinit (const SGPropertyNode * arg)
         }
     }
 
+    globals->get_event_mgr()->reinit();
+
     return result;
 }
 
@@ -229,7 +231,7 @@ do_suspend (const SGPropertyNode * arg)
     vector<SGPropertyNode_ptr> subsystems = arg->getChildren("subsystem");
     for ( unsigned int i = 0; i < subsystems.size(); i++ ) {
         const char * name = subsystems[i]->getStringValue();
-        FGSubsystem * subsystem = globals->get_subsystem(name);
+        SGSubsystem * subsystem = globals->get_subsystem(name);
         if (subsystem == 0) {
             result = false;
             SG_LOG(SG_GENERAL, SG_ALERT, "Subsystem " << name << "not found");
@@ -253,7 +255,7 @@ do_resume (const SGPropertyNode * arg)
     vector<SGPropertyNode_ptr> subsystems = arg->getChildren("subsystem");
     for ( unsigned int i = 0; i < subsystems.size(); i++ ) {
         const char * name = subsystems[i]->getStringValue();
-        FGSubsystem * subsystem = globals->get_subsystem(name);
+        SGSubsystem * subsystem = globals->get_subsystem(name);
         if (subsystem == 0) {
             result = false;
             SG_LOG(SG_GENERAL, SG_ALERT, "Subsystem " << name << "not found");
diff --git a/src/Main/fg_commands.hxx b/src/Main/fg_commands.hxx
index 92a75a8a6..6bd3c6e2e 100644
--- a/src/Main/fg_commands.hxx
+++ b/src/Main/fg_commands.hxx
@@ -16,7 +16,7 @@
 #  include <windows.h>                     
 #endif
 
-#include <simgear/misc/commands.hxx>
+#include <simgear/structure/commands.hxx>
 #include <simgear/props/props.hxx>
 
 /**
diff --git a/src/Main/fg_init.cxx b/src/Main/fg_init.cxx
index 10c522510..f308de7e8 100644
--- a/src/Main/fg_init.cxx
+++ b/src/Main/fg_init.cxx
@@ -47,12 +47,13 @@
 #endif
 
 #include <simgear/compiler.h>
-#include <simgear/misc/exception.hxx>
 
 #include STL_STRING
 
 #include <simgear/constants.h>
 #include <simgear/debug/logstream.hxx>
+#include <simgear/structure/exception.hxx>
+#include <simgear/structure/event_mgr.hxx>
 #include <simgear/math/point3d.hxx>
 #include <simgear/math/polar3d.hxx>
 #include <simgear/math/sg_geodesy.hxx>
@@ -106,7 +107,6 @@
 #endif
 #include <Sound/fg_fx.hxx>
 #include <Systems/system_mgr.hxx>
-#include <Time/FGEventMgr.hxx>
 #include <Time/light.hxx>
 #include <Time/moonpos.hxx>
 #include <Time/sunpos.hxx>
@@ -1410,6 +1410,18 @@ bool fgInitSubsystems() {
     SG_LOG( SG_GENERAL, SG_INFO, "Initialize Subsystems");
     SG_LOG( SG_GENERAL, SG_INFO, "========== ==========");
 
+    ////////////////////////////////////////////////////////////////////
+    // Initialize the event manager subsystem.
+    ////////////////////////////////////////////////////////////////////
+
+     globals->get_event_mgr()->bind();
+     globals->get_event_mgr()->init();
+
+     // Output event stats every 60 seconds
+     globals->get_event_mgr()->add( "SGEventMgr::print_stats()",
+                                    globals->get_event_mgr(),
+                                    &SGEventMgr::print_stats,
+                                    60000 );
 
     ////////////////////////////////////////////////////////////////////
     // Initialize the material property subsystem.
@@ -1422,17 +1434,6 @@ bool fgInitSubsystems() {
         exit(-1);
     }
 
-    ////////////////////////////////////////////////////////////////////
-    // Initialize the event manager subsystem.
-    ////////////////////////////////////////////////////////////////////
-
-    global_events.init();
-
-    // Output event stats every 60 seconds
-    global_events.Register( "FGEventMgr::print_stats()",
-                            &global_events, &FGEventMgr::print_stats,
-                            60000 );
-
 
     ////////////////////////////////////////////////////////////////////
     // Initialize the scenery management subsystem.
@@ -1449,10 +1450,10 @@ bool fgInitSubsystems() {
     }
 
     // cause refresh of viewer scenery timestamps every 15 seconds...
-    global_events.Register( "FGTileMgr::refresh_view_timestamps()",
-                            globals->get_tile_mgr(),
-                            &FGTileMgr::refresh_view_timestamps,
-                            15000 );
+    globals->get_event_mgr()->add( "FGTileMgr::refresh_view_timestamps()",
+                                   globals->get_tile_mgr(),
+                                   &FGTileMgr::refresh_view_timestamps,
+                                   15000 );
 
     SG_LOG( SG_GENERAL, SG_DEBUG,
             "Current terrain elevation after tile mgr init " <<
@@ -1477,12 +1478,6 @@ bool fgInitSubsystems() {
     fgInitView();
 
 
-    ////////////////////////////////////////////////////////////////////
-    // Initialize the lighting subsystem.
-    ////////////////////////////////////////////////////////////////////
-
-    globals->add_subsystem("lighting", new FGLight);
-
     ////////////////////////////////////////////////////////////////////
     // Create and register the logger.
     ////////////////////////////////////////////////////////////////////
@@ -1503,7 +1498,7 @@ bool fgInitSubsystems() {
     // Create and register the XML GUI.
     ////////////////////////////////////////////////////////////////////
 
-    globals->add_subsystem("gui", new NewGUI, FGSubsystemMgr::INIT);
+    globals->add_subsystem("gui", new NewGUI, SGSubsystemMgr::INIT);
 
 
     ////////////////////////////////////////////////////////////////////
@@ -1511,8 +1506,8 @@ bool fgInitSubsystems() {
     ////////////////////////////////////////////////////////////////////
 
     // update the current timezone each 30 minutes
-    global_events.Register( "fgUpdateLocalTime()", &fgUpdateLocalTime,
-                            30*60*1000 );
+    globals->get_event_mgr()->add( "fgUpdateLocalTime()",
+                                   &fgUpdateLocalTime, 30*60*1000 );
 
 
     ////////////////////////////////////////////////////////////////////
@@ -1558,12 +1553,20 @@ bool fgInitSubsystems() {
     WeatherDatabase = FGLocalWeatherDatabase::theFGLocalWeatherDatabase;
 
     // register the periodic update of the weather
-    global_events.Register( "weather update", &fgUpdateWeatherDatabase,
-                            30000);
+    globals->get_event_mgr()->add( "weather update",
+                                   &fgUpdateWeatherDatabase, 30000);
 #else
     globals->add_subsystem("environment", new FGEnvironmentMgr);
 #endif
 
+
+    ////////////////////////////////////////////////////////////////////
+    // Initialize the lighting subsystem.
+    ////////////////////////////////////////////////////////////////////
+
+    globals->add_subsystem("lighting", new FGLight);
+
+
 #ifdef FG_USE_CLOUDS_3D
     ////////////////////////////////////////////////////////////////////
     // Initialize the 3D cloud subsystem.
@@ -1740,7 +1743,6 @@ bool fgInitSubsystems() {
     globals->get_subsystem_mgr()->bind();
     globals->get_subsystem_mgr()->init();
 
-
 #ifdef FG_MPLAYER_AS
     ////////////////////////////////////////////////////////////////////
     // Initialize multiplayer subsystem
diff --git a/src/Main/fg_io.hxx b/src/Main/fg_io.hxx
index 3f81f9417..aa377c182 100644
--- a/src/Main/fg_io.hxx
+++ b/src/Main/fg_io.hxx
@@ -26,17 +26,17 @@
 
 
 #include <simgear/compiler.h>
+#include <simgear/structure/subsystem_mgr.hxx>
+
 #include <vector>
 #include STL_STRING
 
-#include "fgfs.hxx"
-
 SG_USING_STD(vector);
 SG_USING_STD(string);
 
 class FGProtocol;
 
-class FGIO : public FGSubsystem
+class FGIO : public SGSubsystem
 {
 public:
     FGIO();
diff --git a/src/Main/fg_props.cxx b/src/Main/fg_props.cxx
index 0311fcd93..22b1d0901 100644
--- a/src/Main/fg_props.cxx
+++ b/src/Main/fg_props.cxx
@@ -24,7 +24,7 @@
 #  include <simgear/compiler.h>
 #endif
 
-#include <simgear/misc/exception.hxx>
+#include <simgear/structure/exception.hxx>
 #include <simgear/magvar/magvar.hxx>
 #include <simgear/timing/sg_time.hxx>
 #include <simgear/misc/sg_path.hxx>
@@ -46,7 +46,6 @@
 #include <GUI/gui.h>
 
 #include "globals.hxx"
-#include "fgfs.hxx"
 #include "fg_props.hxx"
 
 SG_USING_STD(istream);
diff --git a/src/Main/fgfs.cxx b/src/Main/fgfs.cxx
deleted file mode 100644
index c92e99526..000000000
--- a/src/Main/fgfs.cxx
+++ /dev/null
@@ -1,337 +0,0 @@
-#include "fgfs.hxx"
-
-#include <simgear/debug/logstream.hxx>
-#include <simgear/misc/exception.hxx>
-
-#include "globals.hxx"
-#include "fg_props.hxx"
-
-
-
-////////////////////////////////////////////////////////////////////////
-// Implementation of FGSubsystem
-////////////////////////////////////////////////////////////////////////
-
-
-FGSubsystem::FGSubsystem ()
-  : _suspended(false)
-{
-}
-
-FGSubsystem::~FGSubsystem ()
-{
-}
-
-void
-FGSubsystem::init ()
-{
-}
-
-void
-FGSubsystem::reinit ()
-{
-}
-
-void
-FGSubsystem::bind ()
-{
-}
-
-void
-FGSubsystem::unbind ()
-{
-}
-
-void
-FGSubsystem::suspend ()
-{
-  _suspended = true;
-}
-
-void
-FGSubsystem::suspend (bool suspended)
-{
-  _suspended = suspended;
-}
-
-void
-FGSubsystem::resume ()
-{
-  _suspended = false;
-}
-
-bool
-FGSubsystem::is_suspended () const
-{
-  if (!_freeze_master_node.valid())
-    _freeze_master_node = fgGetNode("/sim/freeze/master", true);
-  return _suspended || _freeze_master_node->getBoolValue();
-}
-
-
-
-////////////////////////////////////////////////////////////////////////
-// Implementation of FGSubsystemGroup.
-////////////////////////////////////////////////////////////////////////
-
-FGSubsystemGroup::FGSubsystemGroup ()
-{
-}
-
-FGSubsystemGroup::~FGSubsystemGroup ()
-{
-    for (unsigned int i = 0; i < _members.size(); i++)
-        delete _members[i];
-}
-
-void
-FGSubsystemGroup::init ()
-{
-    for (unsigned int i = 0; i < _members.size(); i++)
-        _members[i]->subsystem->init();
-}
-
-void
-FGSubsystemGroup::reinit ()
-{
-    for (unsigned int i = 0; i < _members.size(); i++)
-        _members[i]->subsystem->reinit();
-}
-
-void
-FGSubsystemGroup::bind ()
-{
-    for (unsigned int i = 0; i < _members.size(); i++)
-        _members[i]->subsystem->bind();
-}
-
-void
-FGSubsystemGroup::unbind ()
-{
-    for (unsigned int i = 0; i < _members.size(); i++)
-        _members[i]->subsystem->unbind();
-}
-
-void
-FGSubsystemGroup::update (double delta_time_sec)
-{
-    for (unsigned int i = 0; i < _members.size(); i++)
-        _members[i]->update(delta_time_sec); // indirect call
-}
-
-void
-FGSubsystemGroup::suspend ()
-{
-    for (unsigned int i = 0; i < _members.size(); i++)
-        _members[i]->subsystem->suspend();
-}
-
-void
-FGSubsystemGroup::resume ()
-{
-    for (unsigned int i = 0; i < _members.size(); i++)
-        _members[i]->subsystem->resume();
-}
-
-bool
-FGSubsystemGroup::is_suspended () const
-{
-    return false;
-}
-
-void
-FGSubsystemGroup::set_subsystem (const string &name, FGSubsystem * subsystem,
-                                 double min_step_sec)
-{
-    Member * member = get_member(name, true);
-    if (member->subsystem != 0)
-        delete member->subsystem;
-    member->name = name;
-    member->subsystem = subsystem;
-    member->min_step_sec = min_step_sec;
-}
-
-FGSubsystem *
-FGSubsystemGroup::get_subsystem (const string &name)
-{
-    Member * member = get_member(name);
-    if (member != 0)
-        return member->subsystem;
-    else
-        return 0;
-}
-
-void
-FGSubsystemGroup::remove_subsystem (const string &name)
-{
-    for (unsigned int i = 0; i < _members.size(); i++) {
-        if (name == _members[i]->name) {
-            _members.erase(_members.begin() + i);
-            return;
-        }
-    }
-}
-
-bool
-FGSubsystemGroup::has_subsystem (const string &name) const
-{
-    return (((FGSubsystemGroup *)this)->get_member(name) != 0);
-}
-
-FGSubsystemGroup::Member *
-FGSubsystemGroup::get_member (const string &name, bool create)
-{
-    for (unsigned int i = 0; i < _members.size(); i++) {
-        if (_members[i]->name == name)
-            return _members[i];
-    }
-    if (create) {
-        Member * member = new Member;
-        _members.push_back(member);
-        return member;
-    } else {
-        return 0;
-    }
-}
-
-
-
-////////////////////////////////////////////////////////////////////////
-// Implementation of FGSubsystemGroup::Member
-////////////////////////////////////////////////////////////////////////
-
-
-FGSubsystemGroup::Member::Member ()
-    : name(""),
-      subsystem(0),
-      min_step_sec(0),
-      elapsed_sec(0)
-{
-}
-
-FGSubsystemGroup::Member::Member (const Member &)
-{
-    Member();
-}
-
-FGSubsystemGroup::Member::~Member ()
-{
-                                // FIXME: causes a crash
-//     delete subsystem;
-}
-
-void
-FGSubsystemGroup::Member::update (double delta_time_sec)
-{
-    elapsed_sec += delta_time_sec;
-    if (elapsed_sec >= min_step_sec) {
-        if (!subsystem->is_suspended()) {
-            subsystem->update(elapsed_sec);
-            elapsed_sec = 0;
-        }
-    }
-}
-
-
-
-////////////////////////////////////////////////////////////////////////
-// Implementation of FGSubsystemMgr.
-////////////////////////////////////////////////////////////////////////
-
-
-FGSubsystemMgr::FGSubsystemMgr ()
-{
-}
-
-FGSubsystemMgr::~FGSubsystemMgr ()
-{
-}
-
-void
-FGSubsystemMgr::init ()
-{
-    for (int i = 0; i < MAX_GROUPS; i++)
-            _groups[i].init();
-}
-
-void
-FGSubsystemMgr::reinit ()
-{
-    for (int i = 0; i < MAX_GROUPS; i++)
-            _groups[i].reinit();
-}
-
-void
-FGSubsystemMgr::bind ()
-{
-    for (int i = 0; i < MAX_GROUPS; i++)
-        _groups[i].bind();
-}
-
-void
-FGSubsystemMgr::unbind ()
-{
-    for (int i = 0; i < MAX_GROUPS; i++)
-        _groups[i].unbind();
-}
-
-void
-FGSubsystemMgr::update (double delta_time_sec)
-{
-    for (int i = 0; i < MAX_GROUPS; i++) {
-        _groups[i].update(delta_time_sec);
-    }
-}
-
-void
-FGSubsystemMgr::suspend ()
-{
-    for (int i = 0; i < MAX_GROUPS; i++)
-        _groups[i].suspend();
-}
-
-void
-FGSubsystemMgr::resume ()
-{
-    for (int i = 0; i < MAX_GROUPS; i++)
-        _groups[i].resume();
-}
-
-bool
-FGSubsystemMgr::is_suspended () const
-{
-    return false;
-}
-
-void
-FGSubsystemMgr::add (const char * name, FGSubsystem * subsystem,
-                     GroupType group, double min_time_sec)
-{
-    SG_LOG(SG_GENERAL, SG_INFO, "Adding subsystem " << name);
-    get_group(group)->set_subsystem(name, subsystem, min_time_sec);
-
-    if (_subsystem_map.find(name) != _subsystem_map.end()) {
-        SG_LOG(SG_GENERAL, SG_ALERT, "Adding duplicate subsystem " << name);
-        throw sg_exception("duplicate subsystem");
-    }
-    _subsystem_map[name] = subsystem;
-}
-
-FGSubsystemGroup *
-FGSubsystemMgr::get_group (GroupType group)
-{
-    return &(_groups[group]);
-}
-
-FGSubsystem *
-FGSubsystemMgr::get_subsystem (const string &name)
-{
-    map<string,FGSubsystem *>::iterator s =_subsystem_map.find(name);
-
-    if (s == _subsystem_map.end())
-        return 0;
-    else
-        return s->second;
-}
-
-// end of fgfs.cxx
diff --git a/src/Main/fgfs.hxx b/src/Main/fgfs.hxx
deleted file mode 100644
index bc4358931..000000000
--- a/src/Main/fgfs.hxx
+++ /dev/null
@@ -1,355 +0,0 @@
-// fgfs.hxx -- top level include file for FlightGear.
-//
-// Written by David Megginson, started 2000-12
-//
-// Copyright (C) 2000  David Megginson, david@megginson.com
-//
-// This program is free software; you can redistribute it and/or
-// modify it under the terms of the GNU General Public License as
-// published by the Free Software Foundation; either version 2 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-//
-// $Id$
-
-
-#ifndef __FGFS_HXX
-#define __FGFS_HXX 1
-
-
-#ifdef HAVE_CONFIG_H
-#  include <config.h>
-#endif
-
-#include <simgear/compiler.h>
-
-// #ifdef SG_MATH_EXCEPTION_CLASH
-// #  include <math.h>
-// #endif
-
-#ifdef HAVE_WINDOWS_H
-#  include <windows.h>                     
-#  include <float.h>                    
-#endif
-
-#include STL_STRING
-SG_USING_STD(string);
-
-#include <vector>
-SG_USING_STD(vector);
-
-#include <map>
-SG_USING_STD(map);
-
-#include <simgear/props/props.hxx>
-
-
-
-/**
- * Basic interface for all FlightGear subsystems.
- *
- * <p>This is an abstract interface that all FlightGear subsystems
- * will eventually implement.  It defines the basic operations for
- * each subsystem: initialization, property binding and unbinding, and
- * updating.  Interfaces may define additional methods, but the
- * preferred way of exchanging information with other subsystems is
- * through the property tree.</p>
- *
- * <p>To publish information through a property, a subsystem should
- * bind it to a variable or (if necessary) a getter/setter pair in the
- * bind() method, and release the property in the unbind() method:</p>
- *
- * <pre>
- * void MySubsystem::bind ()
- * {
- *   fgTie("/controls/flight/elevator", &_elevator);
- *   fgSetArchivable("/controls/flight/elevator");
- * }
- *
- * void MySubsystem::unbind ()
- * {
- *   fgUntie("/controls/flight/elevator");
- * }
- * </pre>
- *
- * <p>To reference a property (possibly) from another subsystem, there
- * are two alternatives.  If the property will be referenced only
- * infrequently (say, in the init() method), then the fgGet* methods
- * declared in fg_props.hxx are the simplest:</p>
- *
- * <pre>
- * void MySubsystem::init ()
- * {
- *   _errorMargin = fgGetFloat("/display/error-margin-pct");
- * }
- * </pre>
- *
- * <p>On the other hand, if the property will be referenced frequently
- * (say, in the update() method), then the hash-table lookup required
- * by the fgGet* methods might be too expensive; instead, the
- * subsystem should obtain a reference to the actual property node in
- * its init() function and use that reference in the main loop:</p>
- *
- * <pre>
- * void MySubsystem::init ()
- * {
- *   _errorNode = fgGetNode("/display/error-margin-pct", true);
- * }
- *
- * void MySubsystem::update (double delta_time_sec)
- * {
- *   do_something(_errorNode.getFloatValue());
- * }
- * </pre>
- *
- * <p>The node returned will always be a pointer to SGPropertyNode,
- * and the subsystem should <em>not</em> delete it in its destructor
- * (the pointer belongs to the property tree, not the subsystem).</p>
- *
- * <p>The program may ask the subsystem to suspend or resume
- * sim-time-dependent operations; by default, the suspend() and
- * resume() methods set the protected variable <var>_suspended</var>,
- * which the subsystem can reference in its update() method, but
- * subsystems may also override the suspend() and resume() methods to
- * take different actions.</p>
- */
-class FGSubsystem
-{
-public:
-
-  /**
-   * Default constructor.
-   */
-  FGSubsystem ();
-
-  /**
-   * Virtual destructor to ensure that subclass destructors are called.
-   */
-  virtual ~FGSubsystem ();
-
-
-  /**
-   * Initialize the subsystem.
-   *
-   * <p>This method should set up the state of the subsystem, but
-   * should not bind any properties.  Note that any dependencies on
-   * the state of other subsystems should be placed here rather than
-   * in the constructor, so that FlightGear can control the
-   * initialization order.</p>
-   */
-  virtual void init ();
-
-
-  /**
-   * Reinitialize the subsystem.
-   *
-   * <p>This method should cause the subsystem to reinitialize itself,
-   * and (normally) to reload any configuration files.</p>
-   */
-  virtual void reinit ();
-
-
-  /**
-   * Acquire the subsystem's property bindings.
-   *
-   * <p>This method should bind all properties that the subsystem
-   * publishes.  It will be invoked after init, but before any
-   * invocations of update.</p>
-   */
-  virtual void bind ();
-
-
-  /**
-   * Release the subsystem's property bindings.
-   *
-   * <p>This method should release all properties that the subsystem
-   * publishes.  It will be invoked by FlightGear (not the destructor)
-   * just before the subsystem is removed.</p>
-   */
-  virtual void unbind ();
-
-
-  /**
-   * Update the subsystem.
-   *
-   * <p>FlightGear invokes this method every time the subsystem should
-   * update its state.</p>
-   *
-   * @param delta_time_sec The delta time, in seconds, since the last
-   * update.  On first update, delta time will be 0.
-   */
-  virtual void update (double delta_time_sec) = 0;
-
-
-  /**
-   * Suspend operation of this subsystem.
-   *
-   * <p>This method instructs the subsystem to suspend
-   * sim-time-dependent operations until asked to resume.  The update
-   * method will still be invoked so that the subsystem can take any
-   * non-time-dependent actions, such as updating the display.</p>
-   *
-   * <p>It is not an error for the suspend method to be invoked when
-   * the subsystem is already suspended; the invocation should simply
-   * be ignored.</p>
-   */
-  virtual void suspend ();
-
-
-  /**
-   * Suspend or resum operation of this subsystem.
-   *
-   * @param suspended true if the subsystem should be suspended, false
-   * otherwise.
-   */
-  virtual void suspend (bool suspended);
-
-
-  /**
-   * Resume operation of this subsystem.
-   *
-   * <p>This method instructs the subsystem to resume
-   * sim-time-depended operations.  It is not an error for the resume
-   * method to be invoked when the subsystem is not suspended; the
-   * invocation should simply be ignored.</p>
-   */
-  virtual void resume ();
-
-
-  /**
-   * Test whether this subsystem is suspended.
-   *
-   * @return true if the subsystem is suspended, false if it is not.
-   */
-  virtual bool is_suspended () const;
-
-
-protected:
-
-  mutable SGPropertyNode_ptr _freeze_master_node;
-  bool _suspended;
-
-};
-
-
-
-/**
- * A group of FlightGear subsystems.
- */
-class FGSubsystemGroup : public FGSubsystem
-{
-public:
-
-    FGSubsystemGroup ();
-    virtual ~FGSubsystemGroup ();
-
-    virtual void init ();
-    virtual void reinit ();
-    virtual void bind ();
-    virtual void unbind ();
-    virtual void update (double delta_time_sec);
-    virtual void suspend ();
-    virtual void resume ();
-    virtual bool is_suspended () const;
-
-    virtual void set_subsystem (const string &name,
-                                FGSubsystem * subsystem,
-                                double min_step_sec = 0);
-    virtual FGSubsystem * get_subsystem (const string &name);
-    virtual void remove_subsystem (const string &name);
-    virtual bool has_subsystem (const string &name) const;
-
-private:
-
-    struct Member {
-
-        Member ();
-        Member (const Member &member);
-        virtual ~Member ();
-
-        virtual void update (double delta_time_sec);
-
-        string name;
-        FGSubsystem * subsystem;
-        double min_step_sec;
-        double elapsed_sec;
-    };
-
-    Member * get_member (const string &name, bool create = false);
-
-    vector<Member *> _members;
-};
-
-
-
-/**
- * Manage subsystems for FlightGear.
- *
- * This top-level subsystem will eventually manage all of the
- * subsystems in FlightGear: it broadcasts its life-cycle events
- * (init, bind, etc.) to all of the subsystems it manages.  Subsystems
- * are grouped to guarantee order of initialization and execution --
- * currently, the only two groups are INIT and GENERAL, but others
- * will appear in the future.
- *
- * All subsystems are named as well as grouped, and subsystems can be
- * looked up by name and cast to the appropriate subtype when another
- * subsystem needs to invoke specialized methods.
- *
- * The subsystem manager owns the pointers to all the subsystems in
- * it.
- */
-class FGSubsystemMgr : public FGSubsystem
-{
-public:
-
-    /**
-     * Types of subsystem groups.
-     */
-    enum GroupType {
-        INIT = 0,
-        GENERAL,
-        MAX_GROUPS
-    };
-
-    FGSubsystemMgr ();
-    virtual ~FGSubsystemMgr ();
-
-    virtual void init ();
-    virtual void reinit ();
-    virtual void bind ();
-    virtual void unbind ();
-    virtual void update (double delta_time_sec);
-    virtual void suspend ();
-    virtual void resume ();
-    virtual bool is_suspended () const;
-
-    virtual void add (const char * name,
-                      FGSubsystem * subsystem,
-                      GroupType group = GENERAL, 
-                      double min_time_sec = 0);
-
-    virtual FGSubsystemGroup * get_group (GroupType group);
-
-    virtual FGSubsystem * get_subsystem(const string &name);
-
-private:
-
-    FGSubsystemGroup _groups[MAX_GROUPS];
-    map<string,FGSubsystem *> _subsystem_map;
-
-};
-
-
-
-#endif // __FGFS_HXX
-
-// end of fgfs.hxx
diff --git a/src/Main/globals.cxx b/src/Main/globals.cxx
index 0c90fe260..4008ba180 100644
--- a/src/Main/globals.cxx
+++ b/src/Main/globals.cxx
@@ -21,7 +21,7 @@
 // $Id$
 
 
-#include <simgear/misc/commands.hxx>
+#include <simgear/structure/commands.hxx>
 #include <simgear/misc/sg_path.hxx>
 
 #include "globals.hxx"
@@ -41,7 +41,8 @@ FGGlobals *globals;
 
 // Constructor
 FGGlobals::FGGlobals() :
-    subsystem_mgr( new FGSubsystemMgr ),
+    subsystem_mgr( new SGSubsystemMgr ),
+    event_mgr( new SGEventMgr ),
     sim_time_sec( 0.0 ),
     fg_root( "" ),
     fg_scenery( "" ),
@@ -73,8 +74,7 @@ FGGlobals::FGGlobals() :
     channel_options_list( NULL ),
     scenery( NULL ),
     tile_mgr( NULL ),
-    io( new FGIO ),
-    cur_light_params( NULL )
+    io( new FGIO )
 {
 }
 
@@ -83,6 +83,7 @@ FGGlobals::FGGlobals() :
 FGGlobals::~FGGlobals() 
 {
   delete subsystem_mgr;
+  delete event_mgr;
   delete initial_state;
   delete props;
   delete commands;
@@ -104,13 +105,13 @@ void FGGlobals::set_fg_root (const string &root) {
 }
 
 
-FGSubsystemMgr *
+SGSubsystemMgr *
 FGGlobals::get_subsystem_mgr () const
 {
     return subsystem_mgr;
 }
 
-FGSubsystem *
+SGSubsystem *
 FGGlobals::get_subsystem (const char * name)
 {
     return subsystem_mgr->get_subsystem(name);
@@ -118,20 +119,48 @@ FGGlobals::get_subsystem (const char * name)
 
 void
 FGGlobals::add_subsystem (const char * name,
-                          FGSubsystem * subsystem,
-                          FGSubsystemMgr::GroupType type,
+                          SGSubsystem * subsystem,
+                          SGSubsystemMgr::GroupType type,
                           double min_time_sec)
 {
     subsystem_mgr->add(name, subsystem, type, min_time_sec);
 }
 
 
+SGEventMgr *
+FGGlobals::get_event_mgr () const
+{
+    return event_mgr;
+}
+
+
+void
+FGGlobals::add_event (const char * name,
+                      int repeat_value,
+                      int initial_value)
+{
+    event_mgr->add(name, subsystem_mgr->get_subsystem(name),
+                   repeat_value, initial_value);
+}
+
+void
+FGGlobals::add_event (const char * name,
+                      const SGSubsystem * subsystem,
+                      int repeat_value,
+                      int initial_value)
+{
+    event_mgr->add(name, subsystem, repeat_value, initial_value);
+}
+
+
+
 // Save the current state as the initial state.
 void
 FGGlobals::saveInitialState ()
 {
   delete initial_state;
   initial_state = new SGPropertyNode();
+
   if (!copyProperties(props, initial_state))
     SG_LOG(SG_GENERAL, SG_ALERT, "Error saving initial state");
 }
diff --git a/src/Main/globals.hxx b/src/Main/globals.hxx
index 75b18e6b0..3104989b2 100644
--- a/src/Main/globals.hxx
+++ b/src/Main/globals.hxx
@@ -24,14 +24,18 @@
 #ifndef _GLOBALS_HXX
 #define _GLOBALS_HXX
 
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif
+
 #include <simgear/compiler.h>
+#include <simgear/structure/callback.hxx>
+#include <simgear/structure/subsystem_mgr.hxx>
+#include <simgear/structure/event_mgr.hxx>
 
 #include <vector>
 #include STL_STRING
 
-#include "fgfs.hxx"
-
-
 SG_USING_STD( vector );
 SG_USING_STD( string );
 
@@ -84,12 +88,14 @@ class FGViewer;
 /**
  * Bucket for subsystem pointers representing the sim's state.
  */
+
 class FGGlobals
 {
 
 private:
 
-    FGSubsystemMgr * subsystem_mgr;
+    SGSubsystemMgr * subsystem_mgr;
+    SGEventMgr * event_mgr;
 
     // Number of milliseconds elapsed since the start of the program.
     double sim_time_sec;
@@ -185,9 +191,6 @@ private:
     // Input/Ouput subsystem
     FGIO *io;
 
-    // light parameters
-    FGLight *cur_light_params;
-
 #ifdef FG_MPLAYER_AS
     //Mulitplayer managers
     FGMultiplayTxMgr *multiplayer_tx_mgr;
@@ -200,16 +203,47 @@ public:
     FGGlobals();
     virtual ~FGGlobals();
 
-    virtual FGSubsystemMgr * get_subsystem_mgr () const;
+    virtual SGSubsystemMgr * get_subsystem_mgr () const;
 
-    virtual FGSubsystem * get_subsystem (const char * name);
+    virtual SGSubsystem * get_subsystem (const char * name);
 
     virtual void add_subsystem (const char * name,
-                                FGSubsystem * subsystem,
-                                FGSubsystemMgr::GroupType
-                                  type = FGSubsystemMgr::GENERAL,
+                                SGSubsystem * subsystem,
+                                SGSubsystemMgr::GroupType
+                                type = SGSubsystemMgr::GENERAL,
                                 double min_time_sec = 0);
 
+    virtual SGEventMgr * get_event_mgr () const;
+
+    virtual void add_event (const char * name,
+                            int repeat_value,
+                            int initial_value = -1 );
+
+    virtual void add_event (const char * name,
+                            const SGSubsystem * subsystem,
+                            int repeat_value,
+                            int initial_value = -1 );
+
+    template< typename Fun >
+    inline void add_event( const char * name,
+                           const Fun& func,
+                           SGEvent::interval_type repeat_value,
+                           SGEvent::interval_type initial_value = -1 )
+    {
+        event_mgr->add( name, get_subsystem( name ), func,
+                        repeat_value, initial_value);
+    }
+
+    template< typename Fun >
+    inline void add_event( const char * name,
+                           const SGSubsystem * subsystem,
+                           const Fun& func,
+                           SGEvent::interval_type repeat_value,
+                           SGEvent::interval_type initial_value = -1 )
+    {
+        event_mgr->add( name, subsystem, func, repeat_value, initial_value);
+    }
+
     inline double get_sim_time_sec () const { return sim_time_sec; }
     inline void inc_sim_time_sec (double dt) { sim_time_sec += dt; }
     inline void set_sim_time_sec (double t) { sim_time_sec = t; }
diff --git a/src/Main/logger.hxx b/src/Main/logger.hxx
index 4818e44f0..f1098d679 100644
--- a/src/Main/logger.hxx
+++ b/src/Main/logger.hxx
@@ -19,26 +19,25 @@
 
 #include <simgear/compiler.h>
 #include <simgear/debug/logstream.hxx>
-#include <simgear/misc/exception.hxx>
+#include <simgear/structure/exception.hxx>
+#include <simgear/structure/subsystem_mgr.hxx>
 #include <simgear/props/props.hxx>
 
 SG_USING_STD(ostream);
 SG_USING_STD(vector);
 
-#include "fgfs.hxx"
-
 
 /**
  * Log any property values to any number of CSV files.
  */
-class FGLogger : public FGSubsystem
+class FGLogger : public SGSubsystem
 {
 public:
 
   FGLogger ();
   virtual ~FGLogger ();
 
-				// Implementation of FGSubsystem
+				// Implementation of SGSubsystem
   virtual void init ();
   virtual void reinit ();
   virtual void bind ();
diff --git a/src/Main/main.cxx b/src/Main/main.cxx
index 0056925c2..3088b9570 100644
--- a/src/Main/main.cxx
+++ b/src/Main/main.cxx
@@ -64,7 +64,6 @@
 
 #include <Include/general.hxx>
 #include <Scenery/tileentry.hxx>
-#include <Time/FGEventMgr.hxx>
 #include <Time/light.hxx>
 #include <Time/light.hxx>
 #include <Aircraft/aircraft.hxx>
@@ -133,8 +132,6 @@ bool glPointParameterIsSupported = false;
 #  include <console.h>		// -dw- for command line dialog
 #endif
 
-FGEventMgr global_events;
-
 // This is a record containing a bit of global housekeeping information
 FGGeneral general;
 
@@ -374,9 +371,6 @@ void fgRenderFrame() {
     GLfloat black[4] = { 0.0, 0.0, 0.0, 1.0 };
     GLfloat white[4] = { 1.0, 1.0, 1.0, 1.0 };
 
-    // Process/manage pending events
-    global_events.update( delta_time_sec );
-
     // static const SGPropertyNode *longitude
     //     = fgGetNode("/position/longitude-deg");
     // static const SGPropertyNode *latitude
@@ -510,18 +504,18 @@ void fgRenderFrame() {
         if ( skyblend ) {
             /*
              SG_LOG( SG_GENERAL, SG_BULK, "thesky->repaint() sky_color = "
-             << cur_light_params.sky_color[0] << " "
-             << cur_light_params.sky_color[1] << " "
-             << cur_light_params.sky_color[2] << " "
-             << cur_light_params.sky_color[3] );
+             << l->sky_color()[0] << " "
+             << l->sky_color()[1] << " "
+             << l->sky_color()[2] << " "
+             << l->sky_color()[3] );
             SG_LOG( SG_GENERAL, SG_BULK, "    fog = "
-             << cur_light_params.fog_color[0] << " "
-             << cur_light_params.fog_color[1] << " "
-             << cur_light_params.fog_color[2] << " "
-             << cur_light_params.fog_color[3] ); 
+             << l->fog_color()[0] << " "
+             << l->fog_color()[1] << " "
+             << l->fog_color()[2] << " "
+             << l->fog_color()[3] ); 
             SG_LOG( SG_GENERAL, SG_BULK,
-                    "    sun_angle = " << cur_light_params.sun_angle
-             << "    moon_angle = " << cur_light_params.moon_angle );
+                    "    sun_angle = " << l->sun_angle
+             << "    moon_angle = " << l->moon_angle );
             */
 
             static SGSkyColor scolor;
@@ -549,7 +543,7 @@ void fgRenderFrame() {
              << " lon = " << cur_fdm_state->get_Longitude()
              << " lat = " << cur_fdm_state->get_Latitude() );
             SG_LOG( SG_GENERAL, SG_BULK,
-                    "    sun_rot = " << cur_light_params.sun_rotation
+                    "    sun_rot = " << l->get_sun_rotation
              << " gst = " << SGTime::cur_time_params->getGst() );
             SG_LOG( SG_GENERAL, SG_BULK,
                  "    sun ra = " << globals->get_ephem()->getSunRightAscension()
@@ -1019,6 +1013,8 @@ static void fgMainLoop( void ) {
 
     SGTime *t = globals->get_time_params();
 
+    globals->get_event_mgr()->update(delta_time_sec);
+
     SGLocation * acmodel_location = 0;
     if(cur_fdm_state->getACModel() != 0) {
       acmodel_location = (SGLocation *)  cur_fdm_state->getACModel()->get3DModel()->getSGLocation();
diff --git a/src/Main/options.cxx b/src/Main/options.cxx
index 8e8b228f3..53daa5c80 100644
--- a/src/Main/options.cxx
+++ b/src/Main/options.cxx
@@ -26,7 +26,7 @@
 #endif
 
 #include <simgear/compiler.h>
-#include <simgear/misc/exception.hxx>
+#include <simgear/structure/exception.hxx>
 #include <simgear/debug/logstream.hxx>
 
 #include <math.h>		// rint()
diff --git a/src/Main/viewer.hxx b/src/Main/viewer.hxx
index 1aa49a366..30f17a0d0 100644
--- a/src/Main/viewer.hxx
+++ b/src/Main/viewer.hxx
@@ -34,12 +34,11 @@
 
 #include <simgear/compiler.h>
 #include <simgear/constants.h>
+#include <simgear/structure/subsystem_mgr.hxx>
 #include <simgear/scene/model/location.hxx>
 
 #include <plib/sg.h>		// plib include
 
-#include "fgfs.hxx"
-
 #define FG_FOV_MIN 0.1
 #define FG_FOV_MAX 179.9
 
@@ -49,7 +48,7 @@ enum fgViewType {
 };
 
 // Define a structure containing view information
-class FGViewer : public FGSubsystem {
+class FGViewer : public SGSubsystem {
 
 public:
 
@@ -74,7 +73,7 @@ public:
     virtual ~FGViewer( void );
 
     //////////////////////////////////////////////////////////////////////
-    // Part 1: standard FGSubsystem implementation.
+    // Part 1: standard SGSubsystem implementation.
     //////////////////////////////////////////////////////////////////////
 
     virtual void init ();
diff --git a/src/Main/viewmgr.hxx b/src/Main/viewmgr.hxx
index f5812db12..b4a4fbf0e 100644
--- a/src/Main/viewmgr.hxx
+++ b/src/Main/viewmgr.hxx
@@ -31,6 +31,7 @@
 
 
 #include <simgear/compiler.h>
+#include <simgear/structure/subsystem_mgr.hxx>
 
 #ifdef HAVE_CONFIG_H
 #  include <config.h>
@@ -38,14 +39,13 @@
 
 #include <vector>
 
-#include "fgfs.hxx"
 #include "viewer.hxx"
 
 SG_USING_STD(vector);
 
 
 // Define a structure containing view information
-class FGViewMgr : public FGSubsystem
+class FGViewMgr : public SGSubsystem
 {
 
 public:
diff --git a/src/Model/acmodel.cxx b/src/Model/acmodel.cxx
index 7096473e8..e14c6bd26 100644
--- a/src/Model/acmodel.cxx
+++ b/src/Model/acmodel.cxx
@@ -14,7 +14,7 @@
 
 #include <simgear/compiler.h>
 #include <simgear/debug/logstream.hxx>
-#include <simgear/misc/exception.hxx>
+#include <simgear/structure/exception.hxx>
 #include <simgear/misc/sg_path.hxx>
 #include <simgear/scene/model/placement.hxx>
 
diff --git a/src/Model/acmodel.hxx b/src/Model/acmodel.hxx
index 0e6fe2235..cf337bd5e 100644
--- a/src/Model/acmodel.hxx
+++ b/src/Model/acmodel.hxx
@@ -15,7 +15,7 @@
 SG_USING_STD(string);
 SG_USING_STD(vector);
 
-#include <Main/fgfs.hxx>	// for FGSubsystem
+#include <simgear/structure/subsystem_mgr.hxx>	// for SGSubsystem
 
 
 // Don't pull in the headers, since we don't need them here.
@@ -24,7 +24,7 @@ class ssgSelector;
 class SGModelPlacement;
 
 
-class FGAircraftModel : public FGSubsystem
+class FGAircraftModel : public SGSubsystem
 {
 public:
 
diff --git a/src/Model/model_panel.cxx b/src/Model/model_panel.cxx
index 492b39d29..1c9994ed7 100644
--- a/src/Model/model_panel.cxx
+++ b/src/Model/model_panel.cxx
@@ -17,7 +17,7 @@
 #include <plib/ssg.h>
 #include <plib/ul.h>
 
-#include <simgear/misc/exception.hxx>
+#include <simgear/structure/exception.hxx>
 #include <simgear/misc/sg_path.hxx>
 #include <simgear/props/props.hxx>
 #include <simgear/props/props_io.hxx>
diff --git a/src/Model/modelmgr.hxx b/src/Model/modelmgr.hxx
index 664e48425..41376f47d 100644
--- a/src/Model/modelmgr.hxx
+++ b/src/Model/modelmgr.hxx
@@ -13,8 +13,7 @@
 #include <vector>
 
 #include <simgear/compiler.h>	// for SG_USING_STD
-
-#include <Main/fgfs.hxx>	// for FGSubsystem
+#include <simgear/structure/subsystem_mgr.hxx>
 
 SG_USING_STD(vector);
 
@@ -27,7 +26,7 @@ class SGModelPlacement;
 /**
  * Manage a list of user-specified models.
  */
-class FGModelMgr : public FGSubsystem
+class FGModelMgr : public SGSubsystem
 {
 public:
 
diff --git a/src/Network/generic.cxx b/src/Network/generic.cxx
index 7df1220d9..062ad9542 100644
--- a/src/Network/generic.cxx
+++ b/src/Network/generic.cxx
@@ -23,7 +23,7 @@
 
 #include <simgear/debug/logstream.hxx>
 #include <simgear/io/iochannel.hxx>
-#include <simgear/misc/exception.hxx>
+#include <simgear/structure/exception.hxx>
 #include <simgear/misc/sg_path.hxx>
 #include <simgear/props/props.hxx>
 #include <simgear/props/props_io.hxx>
diff --git a/src/Network/httpd.cxx b/src/Network/httpd.cxx
index b020d89f4..94a5a9532 100644
--- a/src/Network/httpd.cxx
+++ b/src/Network/httpd.cxx
@@ -39,7 +39,7 @@
 #include <simgear/debug/logstream.hxx>
 #include <simgear/io/iochannel.hxx>
 #include <simgear/math/sg_types.hxx>
-#include <simgear/misc/commands.hxx>
+#include <simgear/structure/commands.hxx>
 #include <simgear/props/props.hxx>
 
 #include <Main/fg_props.hxx>
diff --git a/src/Network/props.cxx b/src/Network/props.cxx
index 9d4fdc182..7268f6f63 100644
--- a/src/Network/props.cxx
+++ b/src/Network/props.cxx
@@ -29,7 +29,7 @@
 
 #include <simgear/compiler.h>
 #include <simgear/debug/logstream.hxx>
-#include <simgear/misc/commands.hxx>
+#include <simgear/structure/commands.hxx>
 #include <simgear/misc/strutils.hxx>
 #include <simgear/props/props.hxx>
 #include <simgear/props/props_io.hxx>
diff --git a/src/Replay/replay.hxx b/src/Replay/replay.hxx
index 41f1a4a62..499b9c349 100644
--- a/src/Replay/replay.hxx
+++ b/src/Replay/replay.hxx
@@ -34,10 +34,10 @@
 
 #include <simgear/math/sg_types.hxx>
 #include <simgear/props/props.hxx>
+#include <simgear/structure/subsystem_mgr.hxx>
 
 #include <Network/net_ctrls.hxx>
 #include <Network/net_fdm.hxx>
-#include <Main/fgfs.hxx>
 
 SG_USING_STD(deque);
 
@@ -60,7 +60,7 @@ typedef deque < FGReplayData > replay_list_type;
  * 
  */
 
-class FGReplay : public FGSubsystem
+class FGReplay : public SGSubsystem
 {
 
 public:
diff --git a/src/Scenery/scenery.hxx b/src/Scenery/scenery.hxx
index 4d506e4b7..020405f83 100644
--- a/src/Scenery/scenery.hxx
+++ b/src/Scenery/scenery.hxx
@@ -33,13 +33,12 @@
 #include <plib/sg.h>
 #include <plib/ssg.h>
 
+#include <simgear/structure/subsystem_mgr.hxx>
 #include <simgear/math/point3d.hxx>
 
-#include <Main/fgfs.hxx>
-
 
 // Define a structure containing global scenery parameters
-class FGScenery : public FGSubsystem {
+class FGScenery : public SGSubsystem {
     // center of current scenery chunk
     Point3D center;
 
@@ -74,7 +73,7 @@ public:
     FGScenery();
     ~FGScenery();
 
-    // Implementation of FGSubsystem.
+    // Implementation of SGSubsystem.
     void init ();
     void bind ();
     void unbind ();
diff --git a/src/Scenery/tilemgr.cxx b/src/Scenery/tilemgr.cxx
index f1046c552..5467f6a7a 100644
--- a/src/Scenery/tilemgr.cxx
+++ b/src/Scenery/tilemgr.cxx
@@ -33,7 +33,7 @@
 #include <simgear/math/polar3d.hxx>
 #include <simgear/math/sg_geodesy.hxx>
 #include <simgear/math/vector.hxx>
-#include <simgear/misc/exception.hxx>
+#include <simgear/structure/exception.hxx>
 #include <simgear/scene/model/modellib.hxx>
 
 #include <Main/globals.hxx>
diff --git a/src/Scripting/scriptmgr.hxx b/src/Scripting/scriptmgr.hxx
index f52182488..cd5aacbe2 100644
--- a/src/Scripting/scriptmgr.hxx
+++ b/src/Scripting/scriptmgr.hxx
@@ -11,8 +11,7 @@
 #endif
 
 #include <simgear/compiler.h>	// for SG_USING_STD
-
-#include <Main/fgfs.hxx>
+#include <simgear/structure/subsystem_mgr.hxx>
 
 class pslExtension;
 
@@ -32,7 +31,7 @@ class pslExtension;
  * get_property(name) - get a property value
  * set_property(name, value) - set a property value
  */
-class FGScriptMgr : public FGSubsystem
+class FGScriptMgr : public SGSubsystem
 {
 public:
 
diff --git a/src/Sound/fg_fx.cxx b/src/Sound/fg_fx.cxx
index 939e2c8c6..93e8b779b 100644
--- a/src/Sound/fg_fx.cxx
+++ b/src/Sound/fg_fx.cxx
@@ -26,7 +26,7 @@
 #endif
 
 #include <simgear/debug/logstream.hxx>
-#include <simgear/misc/exception.hxx>
+#include <simgear/structure/exception.hxx>
 #ifdef __BORLANDC__
 #  define exception c_exception
 #endif
diff --git a/src/Sound/fg_fx.hxx b/src/Sound/fg_fx.hxx
index a28ca9a7b..0cc29dc39 100644
--- a/src/Sound/fg_fx.hxx
+++ b/src/Sound/fg_fx.hxx
@@ -24,7 +24,7 @@
 #ifndef __FGFX_HXX
 #define __FGFX_HXX 1
 
-#include <Main/fgfs.hxx>
+#include <simgear/structure/subsystem_mgr.hxx>
 
 class SGSound;
 
@@ -35,7 +35,7 @@ class SGSound;
  * on current flight conditions.  The sound manager must be initialized
  * before this object is.
  */
-class FGFX : public FGSubsystem
+class FGFX : public SGSubsystem
 {
 
 public:
diff --git a/src/Systems/electrical.cxx b/src/Systems/electrical.cxx
index 4905dbeb4..b069407c4 100644
--- a/src/Systems/electrical.cxx
+++ b/src/Systems/electrical.cxx
@@ -21,7 +21,7 @@
 // $Id$
 
 
-#include <simgear/misc/exception.hxx>
+#include <simgear/structure/exception.hxx>
 #include <simgear/misc/sg_path.hxx>
 
 #include <Main/fg_props.hxx>
diff --git a/src/Systems/electrical.hxx b/src/Systems/electrical.hxx
index 9761a955c..fee71cf0b 100644
--- a/src/Systems/electrical.hxx
+++ b/src/Systems/electrical.hxx
@@ -39,8 +39,7 @@ SG_USING_STD(string);
 SG_USING_STD(vector);
 
 #include <simgear/props/props.hxx>
-
-#include <Main/fgfs.hxx>
+#include <simgear/structure/subsystem_mgr.hxx>
 
 
 // Forward declaration
@@ -184,7 +183,7 @@ public:
  * 
  */
 
-class FGElectricalSystem : public FGSubsystem
+class FGElectricalSystem : public SGSubsystem
 {
 
 public:
diff --git a/src/Systems/pitot.hxx b/src/Systems/pitot.hxx
index 0024f2882..80be710f0 100644
--- a/src/Systems/pitot.hxx
+++ b/src/Systems/pitot.hxx
@@ -12,8 +12,7 @@
 #endif
 
 #include <simgear/props/props.hxx>
-
-#include <Main/fgfs.hxx>
+#include <simgear/structure/subsystem_mgr.hxx>
 
 
 /**
@@ -33,7 +32,7 @@
  *
  * /systems/pitot[0]/total-pressure-inhg
  */
-class PitotSystem : public FGSubsystem
+class PitotSystem : public SGSubsystem
 {
 
 public:
diff --git a/src/Systems/static.hxx b/src/Systems/static.hxx
index df7c65020..56a0a4ed1 100644
--- a/src/Systems/static.hxx
+++ b/src/Systems/static.hxx
@@ -12,8 +12,7 @@
 #endif
 
 #include <simgear/props/props.hxx>
-
-#include <Main/fgfs.hxx>
+#include <simgear/structure/subsystem_mgr.hxx>
 
 
 /**
@@ -31,7 +30,7 @@
  * TODO: support multiple static ports and specific locations
  * TODO: support alternate air with errors
  */
-class StaticSystem : public FGSubsystem
+class StaticSystem : public SGSubsystem
 {
 
 public:
diff --git a/src/Systems/system_mgr.hxx b/src/Systems/system_mgr.hxx
index 544b1e30a..02c102a7e 100644
--- a/src/Systems/system_mgr.hxx
+++ b/src/Systems/system_mgr.hxx
@@ -16,8 +16,7 @@
 #endif
 
 #include <simgear/compiler.h>
-
-#include <Main/fgfs.hxx>
+#include <simgear/structure/subsystem_mgr.hxx>
 
 
 /**
@@ -26,7 +25,7 @@
  * In the initial draft, the systems present are hard-coded, but they
  * will soon be configurable for individual aircraft.
  */
-class FGSystemMgr : public FGSubsystemGroup
+class FGSystemMgr : public SGSubsystemGroup
 {
 public:
 
diff --git a/src/Systems/vacuum.hxx b/src/Systems/vacuum.hxx
index 3087c4633..a18036c77 100644
--- a/src/Systems/vacuum.hxx
+++ b/src/Systems/vacuum.hxx
@@ -12,8 +12,7 @@
 #endif
 
 #include <simgear/props/props.hxx>
-
-#include <Main/fgfs.hxx>
+#include <simgear/structure/subsystem_mgr.hxx>
 
 
 /**
@@ -31,7 +30,7 @@
  *
  * /systems/vacuum[n]/suction-inhg
  */
-class VacuumSystem : public FGSubsystem
+class VacuumSystem : public SGSubsystem
 {
 
 public:
diff --git a/src/Time/FGEventMgr.cxx b/src/Time/FGEventMgr.cxx
deleted file mode 100644
index f9cc429a1..000000000
--- a/src/Time/FGEventMgr.cxx
+++ /dev/null
@@ -1,217 +0,0 @@
-//
-// FGEventMgr.cxx -- Event Manager
-//
-// Written by Bernie Bright, started April 2002.
-//
-// Copyright (C) 2002  Curtis L. Olson  - curt@me.umn.edu
-//
-// This program is free software; you can redistribute it and/or
-// modify it under the terms of the GNU General Public License as
-// published by the Free Software Foundation; either version 2 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-//
-// $Id$
-
-#ifdef HAVE_CONFIG_H
-#  include <config.h>
-#endif
-
-#include <simgear/compiler.h>
-#include <simgear/debug/logstream.hxx>
-
-#include "FGEventMgr.hxx"
-
-FGEventMgr::FGEvent::FGEvent()
-    : name_(""),
-      callback_(0),
-      repeat_value_(0),
-      initial_value_(0),
-      ms_to_go_(0),
-      cum_time(0),
-      min_time(100000),
-      max_time(0),
-      count(0)
-{
-}
-
-FGEventMgr::FGEvent::FGEvent( const char* name,
-			      fgCallback* cb,
-			      interval_type repeat_value,
-			      interval_type initial_value )
-    : name_(name),
-      callback_(cb),
-      repeat_value_(repeat_value),
-      initial_value_(initial_value),
-      //ms_to_go_(repeat_value_),
-      cum_time(0),
-      min_time(100000),
-      max_time(0),
-      count(0)
-{
-    if (initial_value_ < 0)
-    {
-	this->run();
-	ms_to_go_ = repeat_value_;
-    }
-    else
-    {
-	ms_to_go_ = initial_value_;
-    }
-}
-
-
-FGEventMgr::FGEvent::~FGEvent()
-{
-    //delete callback_;
-}
-
-void
-FGEventMgr::FGEvent::run()
-{
-    SGTimeStamp start_time;
-    SGTimeStamp finish_time;
-
-    start_time.stamp();
-
-    // run the event
-    (*callback_)();
-
-    finish_time.stamp();
-
-    ++count;
-
-    unsigned long duration = finish_time - start_time;
-
-    cum_time += duration;
-
-    if ( duration < min_time ) {
-	min_time = duration;
-    }
-
-    if ( duration > max_time ) {
-	max_time = duration;
-    }
-}
-
-void
-FGEventMgr::FGEvent::print_stats() const
-{
-    SG_LOG( SG_EVENT, SG_INFO, 
-            "  " << name_
-            << " int=" << repeat_value_ / 1000.0
-            << " cum=" << cum_time
-            << " min=" << min_time
-            << " max=" <<  max_time
-            << " count=" << count
-            << " ave=" << cum_time / (double)count );
-}
-
-FGEventMgr::FGEventMgr()
-{
-}
-
-FGEventMgr::~FGEventMgr()
-{
-}
-
-void
-FGEventMgr::init()
-{
-    SG_LOG( SG_EVENT, SG_INFO, "Initializing event manager" );
-
-    event_table.clear();
-}
-
-void
-FGEventMgr::bind()
-{
-}
-
-void
-FGEventMgr::unbind()
-{
-}
-
-void
-FGEventMgr::update( double dt )
-{
-    int dt_ms = int(dt * 1000);
-
-    if (dt_ms < 0)
-    {
-	SG_LOG( SG_GENERAL, SG_ALERT,
-		"FGEventMgr::update() called with negative delta T" );
-	return;
-    }
-
-    int min_value = 0;
-    event_container_type::iterator first = event_table.begin();
-    event_container_type::iterator last = event_table.end();
-    event_container_type::iterator event = event_table.end();
-
-    // Scan all events.  Run one whose interval has expired.
-    while (first != last)
-    {
-	if (first->update( dt_ms ))
-	{
-	    if (first->value() < min_value)
-	    {
-		// Select event with largest negative value.
-		// Its been waiting longest.
-		min_value = first->value();
-		event = first;
-	    }
-	}
-	++first;
-    }
-
-    if (event != last)
-    {
-	event->run();
-
-	if (event->repeat_value() > 0)
-	{
-	    event->reset();
-	}
-	else
-	{
-	    SG_LOG( SG_GENERAL, SG_DEBUG, "Deleting event " << event->name() );
-	    event_table.erase( event );
-	}
-    }
-}
-
-void
-FGEventMgr::Register( const FGEvent& event )
-{
-    event_table.push_back( event );
-
-    SG_LOG( SG_EVENT, SG_INFO, "Registered event " << event.name()
-	    << " to run every " << event.repeat_value() << "ms" );
-}
-
-void
-FGEventMgr::print_stats() const
-{
-    SG_LOG( SG_EVENT, SG_INFO, "" );
-    SG_LOG( SG_EVENT, SG_INFO, "Event Stats" );
-    SG_LOG( SG_EVENT, SG_INFO, "-----------" );
-
-    event_container_type::const_iterator first = event_table.begin();
-    event_container_type::const_iterator last = event_table.end();
-    for (; first != last; ++first)
-    {
-	first->print_stats();
-    }
-
-    SG_LOG( SG_EVENT, SG_INFO, "" );
-}
diff --git a/src/Time/FGEventMgr.hxx b/src/Time/FGEventMgr.hxx
deleted file mode 100644
index 54ec6ae7b..000000000
--- a/src/Time/FGEventMgr.hxx
+++ /dev/null
@@ -1,187 +0,0 @@
-// FGEventMgr.hxx -- Flight Gear periodic event scheduler
-//
-// Written by Curtis Olson, started December 1997.
-// Modified by Bernie Bright, April 2002.
-//
-// Copyright (C) 1997  Curtis L. Olson  - curt@infoplane.com
-//
-// This program is free software; you can redistribute it and/or
-// modify it under the terms of the GNU General Public License as
-// published by the Free Software Foundation; either version 2 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-//
-// $Id$
-
-#ifndef FG_EVENT_MGR_H_INCLUDED
-#define FG_EVENT_MGR_H_INCLUDED 1
-
-#include <simgear/compiler.h>
-#include <simgear/timing/timestamp.hxx>
-
-#include <Main/fgfs.hxx>
-#include <Include/fg_callback.hxx>
-
-#include <vector>
-#include <string>
-
-SG_USING_STD(vector);
-SG_USING_STD(string);
-
-/**
- * 
- */
-class FGEventMgr : public FGSubsystem
-{
-public:
-
-    typedef int interval_type;
-
-private:
-
-    /**
-     * 
-     */
-    class FGEvent
-    {
-    public:
-	/**
-	 * 
-	 */
-	FGEvent();
-
-	FGEvent( const char* desc,
-		 fgCallback* cb,
-		 interval_type repeat_value,
-		 interval_type initial_value );
-
-	/**
-	 * 
-	 */
-	~FGEvent();
-
-	/**
-	 * 
-	 */
-	void reset()
-	{
-	    ms_to_go_ = repeat_value_;
-	}
-
-	/**
-	 * Execute this event's callback.
-	 */
-	void run();
-
-	string name() const { return name_; }
-	interval_type repeat_value() const { return repeat_value_; }
-	int value() const { return ms_to_go_; }
-
-	/**
-	 * Display event statistics.
-	 */
-	void print_stats() const;
-
-	/**
-	 * Update the elapsed time for this event.
-	 * @param dt_ms elapsed time in milliseconds.
-	 * @return true if elapsed time has expired.
-	 */
-	bool update( int dt_ms )
-	{
-	    ms_to_go_ -= dt_ms;
-	    return ms_to_go_ <= 0;
-	}
-
-    private:
-	string name_;
-	fgCallback* callback_;
-	interval_type repeat_value_;
-	interval_type initial_value_;
-	int ms_to_go_;
-
-	unsigned long cum_time;    // cumulative processor time of this event
-	unsigned long min_time;    // time of quickest execution
-	unsigned long max_time;    // time of slowest execution
-	unsigned long count;       // number of times executed
-    };
-
-public:
-    FGEventMgr();
-    ~FGEventMgr();
-
-    /**
-     * Initialize the scheduling subsystem.
-     */
-    void init();
-
-    void bind();
-
-    void unbind();
-
-    /*
-     * Update the elapsed time for all events.
-     * @param dt elapsed time in seconds.
-     */
-    void update( double dt );
-
-    /**
-     * Register a free standing function to be executed some time in the future.
-     * @param desc A brief description of this callback for logging.
-     * @param cb The callback function to be executed.
-     * @param repeat_value repetition rate in milliseconds.
-     * @param initial_value initial delay value in milliseconds.  A value of
-     * -1 means run immediately.
-     */
-    template< typename Fun >
-    void Register( const char* name,
-		   const Fun& f,
-		   interval_type repeat_value,
-		   interval_type initial_value = -1 )
-    {
-	this->Register( FGEvent( name,
-				 make_callback(f),
-				 repeat_value,
-				 initial_value ) );
-    }
-
-    template< class ObjPtr, typename MemFn >
-    void Register( const char* name,
-		   const ObjPtr& p,
-		   MemFn pmf,
-		   interval_type repeat_value,
-		   interval_type initial_value = -1 )
-    {
-	this->Register( FGEvent( name,
-				 make_callback(p,pmf),
-				 repeat_value,
-				 initial_value ) );
-    }
-
-    /**
-     * Display statistics for all registered events.
-     */
-    void print_stats() const;
-
-private:
-    void Register( const FGEvent& event );
-
-private:
-
-    typedef vector< FGEvent > event_container_type;
-
-    // Registered events.
-    event_container_type event_table;
-};
-
-extern FGEventMgr global_events;
-
-#endif //FG_ EVENT_MGR_H_INCLUDED
diff --git a/src/Time/Makefile.am b/src/Time/Makefile.am
index 02e4ef5d3..41180d3a7 100644
--- a/src/Time/Makefile.am
+++ b/src/Time/Makefile.am
@@ -1,7 +1,6 @@
 noinst_LIBRARIES = libTime.a
 
 libTime_a_SOURCES = \
-	FGEventMgr.cxx FGEventMgr.hxx \
 	fg_timer.cxx fg_timer.hxx \
 	light.cxx light.hxx \
 	moonpos.cxx moonpos.hxx \
diff --git a/src/Time/light.hxx b/src/Time/light.hxx
index 864668d00..2a24f0b5d 100644
--- a/src/Time/light.hxx
+++ b/src/Time/light.hxx
@@ -42,12 +42,13 @@
 
 #include <plib/sg.h>			// plib include
 
+#include <simgear/structure/subsystem_mgr.hxx>
 #include <simgear/math/interpolater.hxx>
 #include <simgear/math/point3d.hxx>
 
 
 // Define a structure containing the global lighting parameters
-class FGLight : public FGSubsystem
+class FGLight : public SGSubsystem
 {
 
 private: