Index: myglut-macosx.c
===================================================================
--- myglut-macosx.c	(revision 822)
+++ myglut-macosx.c	(revision 823)
@@ -760,8 +760,8 @@
         makeMenu();
 
         // Initialise origin and size of the window.
-        origin[0] = x + 16;
-        origin[1] = y + 50;
+        origin[0] = (horScrSze/2)-(w/2);
+        origin[1] = (verScrSze/2)-(h/2);
         size[0] = w;
         size[1] = h;