people have started using SKIP_TASKBAR, and it's not for stuff you don't want to be able to alt-tab to. so don't put that in here anymore.

openbox/focus.c

@@ -521,7 +521,6 @@ static gboolean valid_focus_target(ObClient *ft)
            ft->type == OB_CLIENT_TYPE_MENU ||
            ft->type == OB_CLIENT_TYPE_UTILITY))) &&
         ((ft->can_focus || ft->focus_notify) &&
-         !ft->skip_taskbar &&
          (ft->desktop == screen_desktop || ft->desktop == DESKTOP_ALL)) &&
         ft == client_focus_target(ft))
         return TRUE;