Please help with Anchor link!

I Have website with 2 languages: Lithuanian and English ("lt" and "en")

The links are like this: http://www.mydomain.com/lt/apie_mus.html and in english -> http://www.mydomain.com/en/about_us.html

When I create the anchor, its link is like <a href="#about-us" >

But in my case, the link should be <a href="en/about_us.html/#about-us" >

I found the file fck_link.js and the line the is creating anchor link:

sUri = '#' + sAnchor ;