-enum { NONE=0, CLOSE, TOGGLE, ICONIFY, SHADE, TOGGLE_ICONIFY, MAXIMIZE_RESTORE, MAXIMIZE, RESTORE, DESKTOP_LEFT, DESKTOP_RIGHT };
+enum { NONE=0, CLOSE, TOGGLE, ICONIFY, SHADE, TOGGLE_ICONIFY, MAXIMIZE_RESTORE, MAXIMIZE, RESTORE, DESKTOP_LEFT, DESKTOP_RIGHT, NEXT_TASK, PREV_TASK };