/**
* disable right mouse button
*/
if (document.layers) {
  document.captureEvents(Event.MOUSEDOWN);
  document.onmousedown = function rightClickNS4 (e) {
    if (document.layers || document.getElementById && !document.all) {
      if (e.which == 2 || e.which == 3) {
        return false;
      }
    }
  };
} else if (document.all && !document.getElementById) {
  document.onmousedown = function rightClickIE4 () {
    if (event.button == 2){
      return false;
    }
  };
} else {
  try {
    document.onmousedown = function rightClickOther (theEvent) {
      if (!theEvent) {
        theEvent = window.event;
      }
      if (theEvent.button == 2) {
        return false;
      }
    };
  }
    catch (e) {
  }
}
document.oncontextmenu = new Function ("return false");