var message="Copyright 2006 by D. Bruce Moore";

 function click(e) {
            if (document.all) {
                        if (event.button==2||event.button==3) {
                                    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;