[Plugin: JQuery Accordion Menu Widget] How to highlight ONLY current menu item, not its parents or c

Hi,
I know this topic has been discussed here for a few times, but I can’t seem to get any solution.
I would like to highlight (i.e. underline) in my menu the current item – only the current item, without its parents or sub pages.
I’m using jQuery Vertical Accordion Menu with this setting:
Hover
Auto expand based on current page/item
Hover delay 0.2 sec
Animation speed: normal
Skin: no theme

I’ve been playing with this for a while and I’ve tried these options:
.current-menu-item { text-decoration: underlined;}
#dc_jqaccordion_widget-%ID%-item ul a.active { text-decoration: underlined;}
.dcjq-accordion li a.active { text-decoration: underlined;}
#dc_jqaccordion_widget-%ID%-item ul a.active { text-decoration: underlined;}

and some more options with ul and li.. but none of it worked.
Here is my blog.
Any ideas how to make this work?
Any help wold be much appreciated. Thanks!

http://wordpress.org/extend/plugins/jquery-vertical-accordion-menu/