var language = 'sk';

function switchLanguage() {
  document.getElementById('talk_' + language).style.display = 'none';
  language = (language == 'sk') ? 'en' : 'sk';
  document.getElementById('talk_' + language).style.display = 'block';
}

if(navigator.language.substr(0,2) == 'cs' || navigator.language.substr(0,2) == 'sk') {
  
}
else {
  
}