How to add a CSS class depending on URL path?

Question

How can I add an CSS class to an div depending on what path I am on, including that it should not mather if I had # in it?

Answer 1

none of these worked for me. this works:

menu structure:

    001
    002
 

source: http://www.paulund.co.uk/use-jquery-to-highlight-active-menu-item