window.onerror = null;        manufacturer = navigator.appName;        versionnum = parseFloat(navigator.appVersion);        if (manufacturer.indexOf('Netscape') >= 0 && versionnum < 4.0)          location.href = 'index.htm';        if (manufacturer.indexOf('Microsoft') >= 0 && versionnum < 4.0)          location.href = 'index.htm';
  

  function popup(URL){
    title = "welcome to fight club popup";
    width = 650;
    height = 500;
    popbox=window.open(URL,"targetname","toolbar=no,scrollbars=yes,directories=no,menubar=no,width="+width+",height="+height);
    if(popbox !=null){
     if (popbox.opener==null){
      popbox.opener=self;
     }
    }
    popbox.focus();
  }