clickmsg = "Image copy prohibited.  Copyright 2004 and later John Berninger.  All rights reserved.";
function click(e) {
 if (document.all) {
  if (event.button == 2) {
   alert(clickmsg);
   return false;
  }
 } else if (document.layers || document.getElementById) {
  if (e.which == 3) {
   alert(clickmsg);
   return false;
  }
 }
 return true;
}
if (document.layers || (!document.all && document.getElementById)) {
 document.captureEvents(Event.MOUSEDOWN);
}
document.onmousedown=click;