combined cd and lcd

[Morten Lemvigh]

Is it possible to define new commands? I would very much like to have a 
combined cd and lcd, so the working directory is changed both locally 
and remote, if the specified path exists in both places.

Since I have the same (relative) directory structure locally and on my 
server, it would save me a lot of time when I use lftp manually.

Regards,
Morten