(separate issue) How to expand the menu to the currently selected sub-category

(ADMINISTRATOR NOTE: This is a separate problem than my other thread “Limit category hierarchy to 2 levels” and therefore must have its own thread. Please keep this post or reopen its original thread https://www.ads-software.com/support/topic/how-to-expand-the-menu-to-the-currently-selected-sub-category?replies=1 )

Can somebody help me change the CSS of the Collapsing Categories menu widget to auto-expand the menu to the currently selected Category.

The Collapsing Category plugin can show category hierarchies : like this
https://docs.google.com/a/fixxi.net/file/d/0B9EzaG7RrpQ4VE55RHc4RGc5T2M/edit

However when you click a sub-level category such as SEO or Animation, the browser navigates to the Sub-directory however the Menu will not auto-expand the hierarchy to display the current sub-category where the browser is at. Instead it stays like this https://docs.google.com/a/fixxi.net/file/d/0B9EzaG7RrpQ4N0FXbGlwZXpURXc/edit

Here is a “work-in-progress” link where I am trying to get this done https://freelancejobs.fixxi.net/category/internet-marketing/seo/animation

https://www.ads-software.com/extend/plugins/collapsing-categories/