text: function showReason(target) {
    if (target.className != 'passed') {
      var child = target.querySelector('div');
      child.className = 'shown';
    }
  }
  
  function hideReason(target) {
    if (target.className != 'passed') {
      var child = target.querySelector('div');
      child.className = 'hidden';
    }
  }
  