(function() {
    var pageUrl = window.location.href;
    var randomNum = Math.floor(Math.random() * 100000);
    var host = "http:\/\/www20.chinatelecom.com.cn";
    var url = host + "/c.gif";
    var id = "d19eb0a9ad034abc83f04a6e62b1080e";
    url += "?rand=" + randomNum
        + "&id=" + id
        + "&url=" + encodeURIComponent(pageUrl);
    var c = new Image();
    c.src = url;
})();