function showAnswer() {
 if(document.all) {
  toggle2.style.display = 'none';
  toggle.style.display = 'block';
 }
 else if(document.layers) {
  document.toggle2.display = 'none';
  document.toggle.display = 'block';
 }
 else {
  var myDivs = document.getElementsByTagName("div")
  myDivs['toggle2'].style.display = 'none';
  myDivs['toggle'].style.display = 'block';
 }
}