Date.prototype.addDays = function (d) {
        this.setDate(parseInt(this.getDate()) + parseInt(d));
    };
    Date.prototype.addWeeks = function (w) {
        this.addDays(w * 7);
    };
    Date.prototype.addMonths = function (m) {
        var d = this.getDate();
        this.setMonth(this.getMonth() + m);
        if (this.getDate() < d)
            this.setDate(0);
    };
    Date.prototype.addYears = function (y) {
        var m = this.getMonth();
        this.setFullYear(this.getFullYear() + y);
        if (m < this.getMonth()) {
            this.setDate(0);
        }
    };

    Date.prototype.addHours = function (h) {
        this.setHours(this.getHours() + h);
    };
    var isPm = false;
    var cnEtaMessage = "需要从国外调货，预计发货时间 ";

    function getLocalTimeGMT(i) {
        if (typeof i !== 'number') return;
        var d = new Date();
        var len = d.getTime();
        var offset = d.getTimezoneOffset() * 60000;
        var utcTime = len + offset;
        return new Date(utcTime + 3600000 * i);
    }

    function getEtaCnMessage() {
        var catNo = arguments[0];
        var isChange = arguments[1];
        var target_str = '';
        var taday_system = getLocalTimeGMT(8);
        var week_number = 0;

        if ((catNo != undefined && catNo != '') && (isChange != undefined && isChange)) {
            var num = catNo.search('HY-R');
            if (num > -1) {
                taday_system.addDays(14);
            }
        }

        switch (taday_system.getDay()) {
            case (0) :
                week_number = 3;
                break;
            case (1) :
                week_number = 9;
                break;
            case (2) :
                week_number = 8;
                break;
            case (3) :
                week_number = 7;
                break;
            case (4) :
                week_number = 6;
                break;
            case (5) :
                week_number = 5;
                break;
            case (6) :
                week_number = 4;
                break;
            default:
                break;
        }
        var target_day = taday_system;
        target_day.addDays(week_number);
        target_str = target_day.getFullYear() + '.' + (checkdateNumber(target_day.getMonth()+1)) + '.' + checkdateNumber(target_day.getDate());
        target_str = cnEtaMessage + '<span>'+ target_str + '</span>';
        return target_str;
    }

    function changeCnEtaMessage(isChange) {
        cnEtaMessage = isChange ? "预计发货时间 " : "需要从国外调货，预计发货时间 ";
    }

    function checkdateNumber(num) {
        return num<10 ? '0' + num : num;
    }

    function checkStockCn(sh_stock_num, sel_num, us_stock_num, catNo) {
        var isChange = false;
        if (parseInt(sh_stock_num) < parseInt(sel_num)) {
            if (us_stock_num == 99999 || us_stock_num == 9527) {
                if (us_stock_num == 9527 && (catNo.indexOf('HY-R') == 0 || catNo.indexOf('HY-r') == 0)) {
                    return "<p class='eta-tips-cart'>预计 1-2 周 发货</p>";
                } else {
                    var delivery = getPrepareDelivery(catNo);
                    if (delivery != '') {
                        return "<p class='eta-tips-cart'>预计 " + delivery + ' 发货</p>';
                    }
                }
            } else {
                if (us_stock_num == 9527) {
                    isChange = true;
                }
                changeCnEtaMessage(isChange);
                return "<p class='eta-tips-cart'>" + getEtaCnMessage(catNo, isChange) + '</p>';
            }
        }
        return "&nbsp;";
    }