function clickIE4() {
  if (event.button == 2) {
    alert(message);

    return false;
  }
}

function clickNS4(e) {
  if (document.layers || (document.getElementById && !document.all)) {
    if (e.which == 2 || e.which == 3) {
      alert(message);

      return false;
    }
  }
}

if (document.layers) {
  document.captureEvents(Event.MOUSEDOWN);

  document.onmousedown = clickNS4;
} else if (document.all && !document.getElementById) {
  document.onmousedown = clickIE4;
}

document.oncontextmenu = new Function("return false");

window.addEventListener("keydown", function (e) {
  if (e.ctrlKey && e.which == 83) {
    e.preventDefault();
  }
});