Detecting browser language setting?

[wb]

Hi, 

How can I detect browser language setting in Pyjs? It is simple in Javascript as following

var language = window.navigator.userLanguage || window.navigator.language;

I searched 'navigator.userLanguage' and 'navigator.language' in Pyjs source and nothing was found. I need a solution running both in pyjd and pyjs.

Thanks in advance.