gistfile1.txt

function moveIt(checkbox) {
var pos;
var moz;
  pos = checkbox.value;
  moz = document.getElementById('moz');
  moz1 = document.getElementById('moz1');
  moz2 = document.getElementById('moz2');
  moz3 = document.getElementById('moz3');

switch (pos) {
  case "nw" :
    if (checkbox.checked === true) { moz.style.visibility="visible" }
      else if (checkbox.checked === false) { moz.style.visibility="hidden" }
    break;
  case "ne" :
    if (checkbox.checked === true) { moz1.style.visibility="visible" }
      else if (checkbox.checked === false) { moz1.style.visibility="hidden" }
    break;
  case "se" :
    if (checkbox.checked === true) { moz2.style.visibility="visible" }
      else if (checkbox.checked === false) { moz2.style.visibility="hidden" }
    break;
  case "sw" :
    if (checkbox.checked === true) { moz3.style.visibility="visible" }
      else if (checkbox.checked === false) { moz3.style.visibility="hidden" }
    break;
  default:
    document.write('not possible');
  }
}