[TYPO3] Real URL issue --- sj

[atul]

Hi all

I am using Real Url and having a multilingual site. It works fine but I 
have a different requirement which real url can not handle with the 
configuration I know.

Suppose there is a page ' testspanish' in spanish language and relevent 
page is not available in french, so when switch over from spanish to 
french, it  shows an error : keyword not found.

I want that in such a case user should be redirected to home of french 
or other language on which user clicks.

How can this be achieved ?
May be from localization settings, but how?

waiting for an reply.

Atul.