Pop-up / overlay menu Hive Theme

I use the Hive theme on a page that just decided to go multilingual. I’d ideally like to create a kind of overlay in which I can offer visitors a choice of language, as I’m unhappy with the current solution (http://www.element-of-prime.at/). I tried InfoBar but it is incompatible with Hive.

Can anyone help me find an alternative or a work around? Maybe a banner with links? Is there an Elixir product that fits the bill and is compatible?