Im getting some troubles using the menĂº around the wordpress twentyeleven theme.. What I wish to do happens when a person clicks the menĂº and would go to the chosen page, the "li" stays exactly the same as with hoover.

This is actually the page.

I understand how to get it done in therms of HTML/CSS however i question how to get it done dynamically. Thanks ahead of time and sorry for that worst british ever.

Whether it's an engaged menu, Wordpress puts a category "current_page_item" around the current page's li. So, just style that.