The problem:
for instance
http://www.domain.com/en/about/index.html
This page has a german button with this link http://www.domain.com/en/about/index.html?de
By clinking on it, I would like to get the page http://www.domain.com/de/about/index.html
If http://www.domain.com/en/about/index.html does not exist, http://www.domain.com/en/about/index.html?de reload the same page
Any ideas ?
