var message="All cartoons on this site are copyrighted material and may not be reprinted without written permission of the author, Jim Huber. Click on the \"Publish Cartoons\" on the web page to contact Jim about publishing his cartoons." 
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;