function switch_display(language) {
  if (language == 'en') {
    document.getElementById('english_guides').style.display = 'block';
    document.getElementById('french_guides').style.display = 'none';
    document.getElementById('german_guides').style.display = 'none';
    document.getElementById('spanish_guides').style.display = 'none';
  }
  else if (language == 'fr') {
    document.getElementById('french_guides').style.display = 'block';
    document.getElementById('english_guides').style.display = 'none';
    document.getElementById('german_guides').style.display = 'none';
    document.getElementById('spanish_guides').style.display = 'none';
  }
  else if (language == 'de') {
    document.getElementById('german_guides').style.display = 'block';
    document.getElementById('english_guides').style.display = 'none';
    document.getElementById('french_guides').style.display = 'none';
    document.getElementById('spanish_guides').style.display = 'none';
  }
  else if (language == 'es') {
    document.getElementById('spanish_guides').style.display = 'block';
    document.getElementById('english_guides').style.display = 'none';
    document.getElementById('french_guides').style.display = 'none';
    document.getElementById('german_guides').style.display = 'none';
  }
}