function saveAd(uid, adid) {
    if (uid == -1) {
        //enable cookie saving.
        if (readCookie('saved') == null) {
            createCookie('saved', adid, 30);
        }
        else {
            var savedInCookie = readCookie('saved');
            // ensure the ad is not already saved
            if (!isContained(savedInCookie, adid)) {
                savedInCookie += '|' + adid;
                createCookie('saved', savedInCookie, 30);
            }
        }
        if (readCookie('savedAlert') == null) {
            //enable popup window reminding only saved in cookies and need to login to save permanently
            createCookie('savedAlert', 1, 30);
        }
        document.getElementById('spanSave' + adid).innerHTML = '<b>Saved</b>&nbsp;&nbsp;&nbsp;';
    }
    else {
        var isSaved = ClassV2.DataFeed.SaveAds(uid, adid).value;
        if (isSaved) {
            document.getElementById('spanSave' + adid).innerHTML = '<b>Saved</b>&nbsp;&nbsp;&nbsp;';
        }
        else {

        }
    }
    document.getElementById('savead' + adid).style.visibility = "hidden";
}
function isContained(arr, adid) {
    var bolContained = false;
    var array = arr.split('|')
    for (i = 0; i < array.length; i++) {
        if (array[i] == adid) bolContained = true;
    }
    return bolContained;
}
function createCookie(name, value, days) {
    if (days) {
        var date = new Date();
        date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
        var expires = "; expires=" + date.toGMTString();
    }
    else var expires = "";
    document.cookie = name + "=" + value + expires + "; path=/";
}

function readCookie(name) {
    var nameEQ = name + "=";
    var ca = document.cookie.split(';');
    for (var i = 0; i < ca.length; i++) {
        var c = ca[i];
        while (c.charAt(0) == ' ') c = c.substring(1, c.length);
        if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length, c.length);
    }
    return null;
}