There is a script, 'kalender.js', that generates the calendar of the current month. There is another script, 'jaka.js', that produces a year calendar. The same scripts are used in both language versions!
The english texts are specified on this page, the (external) scripts that are used on the same page can access them.
Click to see the code of kalender.js
Click to see the code of jaka.js
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