function frameProtection(url)
{
  if (top.frames.length == 0)
  {
    var ver; ver=parseInt(navigator.appVersion,10);
    if (((navigator.appName=="Netscape") && (ver>=3)) ||
        ((navigator.appName=="Microsoft Internet Explorer") && (ver>=4)))
      location.replace(url);
    else
      location = url;
  }
}