function footprint_1606269933(aid, root_dir)
{
    var users_id = getCookie_1606269933('users_id');
    if (!users_id) {
        return false;
    }

    //姝ラ?涓?:??寤哄?姝ュ?璞
    var ajax = new XMLHttpRequest();
    //姝ラ?浜?:璁剧疆璇锋???url???????颁????姹???绫诲??,???颁????姹???url,??互甯﹀?????ㄦ????浼???????tarName?版???＄?
    ajax.open("post", root_dir+'/index.php?m=api&c=Ajax&a=footprint_save', true);
    // 缁?澶撮?ㄦ坊??ajax淇℃?
    ajax.setRequestHeader("X-Requested-With","XMLHttpRequest");
    // 濡?????瑕??? HTML 琛ㄥ???ｆ? POST ?版???璇蜂娇? setRequestHeader() ?ユ坊?? HTTP 澶淬???跺??? send() ?规?涓??瀹??ㄥ??????????版???
    ajax.setRequestHeader("Content-type","application/x-www-form-urlencoded");
    //姝ラ?涓?:????璇锋?+?版?
    ajax.send('aid='+aid+'&_ajax=1');
    //姝ラ???:娉ㄥ??浜?浠 onreadystatechange ?舵???瑰??灏变?璋??
    ajax.onreadystatechange = function () {
        //姝ラ?浜? 濡????藉?杩??拌?涓??ゆ? 璇存?? ?版? 瀹?缇??????ヤ?,骞朵?璇锋???椤甸?㈡????ㄧ??
        if (ajax.readyState==4 && ajax.status==200) {
            var json = ajax.responseText;  
            var res = JSON.parse(json);
            if (1 == res.code) {
                //????
            }
      ??}
    }
}

// 璇诲?? cookie
function getCookie_1606269933(c_name)
{
    if (document.cookie.length>0)
    {
        c_start = document.cookie.indexOf(c_name + "=")
        if (c_start!=-1)
        {
            c_start=c_start + c_name.length+1
            c_end=document.cookie.indexOf(";",c_start)
            if (c_end==-1) c_end=document.cookie.length
            return unescape(document.cookie.substring(c_start,c_end))
        }
    }
    return "";
}