function click(e) {

var message="This image is copyrighted by Bloomfield Photography"

if (document.all) {
  if (event.button == 2) {
  alert(message);
  return false;}
}
if (document.layers) {
  if (e.which == 3) {
  alert(message);
  return false;}
}
}
if (document.layers) {
document.captureEvents(Event.MOUSEDOWN);
}
document.onmousedown=click;