function acclog(gid) {
  var aid = "";

  b = (navigator.cookieEnabled == void(0));
  if( b || navigator.cookieEnabled) {
    var cookie_str = document.cookie + ";";
    var sindex = cookie_str.indexOf("accid=");
    if(sindex != -1) {
      eindex = cookie_str.indexOf(";", sindex);
      aid = cookie_str.substring(sindex+6, eindex);
    }
    if( !aid.match(/^\d{7}_-?\d+$/) ) { 
      var rnd = Math.random().toString(10);
      if( rnd.length < 9 ) {
        rnd += "000000000";
      }
      aid = rnd.substring(2,9) + "_" + ((new Date()).getTime()).toString(10);
      document.cookie = "accid=" + aid  + "; expires=Mon, 01 Jan 2030 00:00:00 GMT; path=/";
      if(b && (document.cookie.indexOf("accid") == -1)) {
        aid = "";
      }
    }
  }
  
  document.write('<p><img src="http://loganalyze.landscape.co.jp/alog?gid=' + gid + '&amp;url=' + 
            encodeURIComponent(document.referrer) + '&amp;aid=' + aid + '" width="1" height="1"></p>');
}