oldTextAry = new Array();

function changeText (fieldObj, newTexStr) {
  if (newTexStr == fieldObj.innerHTML) {
    fieldObj.innerHTML = oldTextAry[fieldObj.id];
  } else {
    oldTextAry[fieldObj.id] = fieldObj.innerHTML;
    fieldObj.innerHTML = newTexStr;
  }
}

function toggledisplay (id){
  if (document.getElementById) {
    var mydiv = document.getElementById(id);
    mydiv.style.display = (mydiv.style.display=='none'?'block':'none');
  }
}