function stopEvent(e)
{
  if (document.addEventListener)
  {
    e.stopPropagation();
    e.preventDefault();
  }
  else if (document.attachEvent)
  {
    e.cancelBubble = true;
    e.returnValue = false;
  }
  return false;
}

function disableRightClick(e)
{
  e = e || window.event;
  var message = "Copyright © " + new Date().getFullYear() + " Leggett & Platt, Incorporated. All Rights Reserved.";
  
  if (e.button == 2)
  {
    alert(message);
    stopEvent(e);
    return false;
  }  
}

if (document.addEventListener)
{
  document.addEventListener("mouseup", disableRightClick, true);
  document.addEventListener("contextmenu", stopEvent, true);
}
else if (document.attachEvent)
{
  document.attachEvent("onmouseup", disableRightClick);
  document.attachEvent("oncontextmenu", stopEvent, true);
}
else
{
  document.onmouseup = disableRightClick;
  document.oncontextmenu = stopEvent;
}