Focus remains on selected outline entry when expanding an entry below

I have a database with a lengthy outline, embedded in a page, displayed in the left frame of a frameset to be used for navigation; almost all outline entries simply open views in the same database. The primary exception are entries that are used to categorize the outline; these have indented entries below them, which display when the higher-level entry is clicked. My problem is that if a user has selected an entry near the top of the outline, and then needs to use an indented entry that is far enough down that the user must scroll to reach the “categorizing” entry, when the user clicks on this categorizing entry, the entry expands, but the outline jumps back to the selected entry at the top, so that the user must scroll down again in order to be able to see the desired outline entry. Checking the “Does not keep selection focus” property of the entry at the top of the outline does not seem to affect this behavior. Is there a way to shift the focus to the “categorizing” entry when the user clicks it?