function click() {
 if (event.button==2)
  alert('WARNING! Property of Hells Angels MC Colorado®. Unauthorized use is strictly prohibited!');
}

document.onmousedown=click

if (navigator.appName.indexOf("Netscape") != -1){
 window.captureEvents(Event.MOUSEDOWN | Event.MOUSEUP)
 window.onmousedown=rightclick;
 window.onmouseup=rightclick;

 function rightclick(e) {
  if (e.which == 3) {
        return false; 
     }
     else {
        return true; 
     }
 }
}