John Clause on "Qtranslate-x how to disable on the sites?"

Hi,
I am using qtranslate-x. Plugin is great but for a really-beginner (me) in some cases is a little bit hard to understand..
I like it on the homepage but I would like to disable the language menu on all the pages. Is it possible?
The site example where I would like to NOT to see the language menu: http://www.gm-photovideo.eu/it/arte/

You would have to PHP-code language switcher on home page and not to include the language switcher anywhere else.