var isNS = (navigator.appName == "Netscape") ? 1 : 0;
  var EnableRightClick = 0;
  if(isNS) document.captureEvents(Event.MOUSEDOWN||Event.MOUSEUP);
  function mischandler()
  { if(EnableRightClick==1)
  { return true; }
  else {return false; }}
  function mousehandler(e)
  { if(EnableRightClick==1){ return true; }
  var myevent = (isNS) ? e : event;
  var eventbutton = (isNS) ? myevent.which : myevent.button;
  if((eventbutton==2)||(eventbutton==3)) return false;}
  function keyhandler(e) { var myevent = (isNS) ? e : window.event;
  if (myevent.keyCode==96) EnableRightClick = 1;
  return;}document.oncontextmenu = mischandler;
  document.onkeypress = keyhandler;
  document.onmousedown = mousehandler;
  document.onmouseup = mousehandler;