Highlight a linked list item in blogger

What i will show you here is the result found in this website: http://www.syndesmosnikiforos.gr/p/blog-page_9205.html

The site is in Greek but you can easily see the result if you click any one of the bullets in the main area of the page.

As you see when a link is clicked the same link is highlighted on the right menu. Also the right menu has a mouse over event that works fine. The best thing is that the component on the right is a standard link list that is added from bloggers Layout menu.