$('#dra-bestaende .icons .column').hover(function () {
  var classList = $(this).attr('class').toString().split(' ');
  $.each(classList, function (i, className) {
    if (className.startsWith('material-')) {
      $('#dra-bestaende .images .'+className).toggleClass('active');
      return false;
    }
  });
  // $(this).toggleClass('active');
});

$('#dra-bestaende .images .column').hover(function () {
  var classList = $(this).attr('class').toString().split(' ');
  $.each(classList, function (i, className) {
    if (className.startsWith('epoche-')) {
      $('#dra-bestaende .icons .'+className).toggleClass('active');
      return false;
    }
  });
});