function disableRightClick(e) {
  var message = "Maaf... Klik Kanan sedang dimatikan..!!!";
  
  if(!document.rightClickDisabled) {
    if(document.layers) {
      document.captureEvents(Event.MOUSEDOWN);
      document.onmousedown = disableRightClick;
    } else document.oncontextmenu = disableRightClick;
    return document.rightClickDisabled = true;
  }
  if(document.layers || (document.getElementById && !document.all)) {
    if (e.which==2||e.which==3) {
	  alert(message);
      return false;
    }
  } else {
    alert(message);
    return false;
  }
}

disableRightClick();