+static void gotoTopLevelDir()
+{
+ /* move upwards to top level directory */
+ while (leveldir_current->node_parent)
+ {
+ /* write a "path" into level tree for easy navigation to last level */
+ if (leveldir_current->node_parent->node_group->cl_first == -1)
+ {
+ int num_leveldirs = numLevelDirInfoInGroup(leveldir_current);
+ int leveldir_pos = posLevelDirInfo(leveldir_current);
+ int num_page_entries;
+ int cl_first, cl_cursor;
+
+ if (num_leveldirs <= MAX_LEVEL_SERIES_ON_SCREEN)
+ num_page_entries = num_leveldirs;
+ else
+ num_page_entries = MAX_LEVEL_SERIES_ON_SCREEN - 1;
+
+ cl_first = MAX(0, leveldir_pos - num_page_entries + 1);
+ cl_cursor = leveldir_pos - cl_first + 3;
+
+ leveldir_current->node_parent->node_group->cl_first = cl_first;
+ leveldir_current->node_parent->node_group->cl_cursor = cl_cursor;
+ }
+
+ leveldir_current = leveldir_current->node_parent;
+ }
+}
+