function toggleflip(div1, div2) {
  var div1 = document.getElementById(div1)
  var div2 = document.getElementById(div2)

  if (div1.style.display == 'none') {
    div1.style.display = 'block'
	div2.style.display = 'none'
  } else {
    div1.style.display = 'none'
	div2.style.display = 'block'
  }
}