var message="Note: the contents of this web site are copyright Mike Kirby, LBIPP.";
 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;