function HighlightQuestions() {
  document.getElementById('Question1').className = 'Hidden';
  document.getElementById('Question2').className = 'Hidden';
  document.getElementById('Question3').className = 'Hidden';
  setTimeout("document.getElementById('Question1').className = 'HighlightQuestion';", 1000)
  setTimeout("document.getElementById('Question1').className = 'Question';", 4000)
  setTimeout("document.getElementById('Question2').className = 'HighlightQuestion';", 2000)
  setTimeout("document.getElementById('Question2').className = 'Question';", 4000)
  setTimeout("document.getElementById('Question3').className = 'HighlightQuestion';", 3000)
  setTimeout("document.getElementById('Question3').className = 'Question';", 4000)
}