function backward(){
  if (current == 1){
    hiscores();
  } else if (current == 2){
    calcs();
  }
  if (current > 1){
    current--;
  }
}

function forward(){
  if (current == 1){
    calcs();
  } else if (current == 2){
    archive();
  }
  if (current < 2){
    current++;
  }
}

function hiscores() {
  document.getElementById('hiscores').style.display = "block";
  document.getElementById('calcs').style.display = "none";
  document.getElementById('archive').style.display = "none";
}

function calcs(){
  document.getElementById('hiscores').style.display = "none";
  document.getElementById('calcs').style.display = "block";
  document.getElementById('archive').style.display = "none";
}

function archive(){
  document.getElementById('hiscores').style.display = "none";
  document.getElementById('calcs').style.display = "none";
  document.getElementById('archive').style.display = "block";
}