document.onmousedown=right;
document.oncontextmenu = nocontextmenu;
if (document.layers) window.captureEvents(Event.MOUSEDOWN)
if (window.Event) document.captureEvents(Event.MOUSEUP);
window.onmousedown=right;

function right(e)
      {
         if (navigator.appName == 'Netscape' && (e.which == 2 || e.which == 3)) return false;
         else if (navigator.appName == "Microsoft Internet Explorer" && (event.button == 2 || event.button == 3))
         {
	 event.returnValue = false;
   	 return false;
         }
      }

function nocontextmenu()
{ event.cancelBubble = true
  event.returnValue = false;
  return false;
}