Selected list item issue

[juliewampler]

Hello - trying to work through an issue that my team and I have been spinning wheels on.

We're trying to use Javascript to get the menu to highlight whichever sub-section you are on. For example, the section is Budget and the sub-sections are Administration, Contacts, Documents, Videos. If you click on "Administration" it opens that sub-section and keeps the menu on the left open where you see all the sub sections. We would like "Administration" to be highlighted so you know you're in that subsection.

After going through this trial/error, we used the directory method approach, but it would be better to know how to highlight those list items based on selection (via click/touch).

Any insight would be greatly appreciated!