Update: Let's say a navigational toolbar as links A, B, and C. I want the link to A to turn bold when the user is viewing that area. Likewise, I want the link to B to turn bold when the user gets there, and so on.

I thought this was done thru CGI. Then I read an article that implied that this could be done thru SSI alone.

I was left wondering so I decided to ask which way to pros (like the visitors of these pages) prefer to do it.:)