「Line２８６〜２９４」

  if (!LayerBeing[number]) return;

  if (isIE5 || isIE6 || isNS6){
    el = document.getElementById("Hopup_Message"+number);
    el.style.left    = mX;
    el.style.top     = mY;
  } else if(isNS4) {
    document.layers["Hopup_Message"+number].moveTo(mX,mY);
  }