[Plugin: WP-dTree] Menu Parent Page Sub page highlighted

Newest version, using wp dtree pages with CloseSameLevel and HighlightSelection and OpenToSelection. I think it is not a question of the CSS, so I hope you can help me, Mr.Developer!

Now I got the following menu structure:
Main page 1
…sub page 1
Main page 2
…sub page 1
…sub page 2

My question: Can I somehow hightlight the Parent Page also when a sub page is selected?
Like this:
Main page 1
…sub page 1
Main page 2
…sub page 1
…sub page 2

So I can see, under which Main Page the sub page is leveled?
Like I choose “Country”, menu goes down and shows subpages like “Germany”, “India” etc. and when I select “India”, both “Country” and “India” are highlighted (bold).
Saw this on many other menus (well, not in wordpress), just want to know how to achieve this with dtree …

Thanx for any help!