var message="Right-click disabled";

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;
}

function protect() {
	document.oncontextmenu=new Function("return false");
}