抓包谷歌翻译，获取 tk=，tk算法

var WL = function (a) {
    return function () {
                return a
            }
    },
    XL = function(a, b) {
        for (var c = 0; c < b.length - 2; c += 3) {
            var d = b.charAt(c + 2),
            d = d >= ‘a‘ ? d.charCodeAt(0) - 87 : Number(d),
            d = b.charAt(c + 1) == "+" ? a >>> d : a << d;
            a = b.charAt(c) == "+" ? a + d & 4294967295 : a ^ d
        }
        return a
    },
    ZL = function(a) {
            for (var e = [], f = 0, g = 0; g < a.length; g++) {
                var m = a.charCodeAt(g);
                128 > m ? e[f++] = m : (2048 > m ? e[f++] = m >> 6 | 192 : (55296 == (m & 64512) && g + 1 < a.length && 56320 == (a.charCodeAt(g + 1) & 64512) ? (m = 65536 + ((m & 1023) << 10) + (a.charCodeAt(++g) & 1023), e[f++] = m >> 18 | 240, e[f++] = m >> 12 & 63 | 128)  : e[f++] = m >> 12 | 224, e[f++] = m >> 6 & 63 | 128), e[f++] = m & 63 | 128)
            }
            a = 0;
            for (f = 0; f < e.length; f++) a += e[f], a = XL(a, "+-a^+6");
            a = XL(a, "+-3^+b+-f");
            0 > a && (a = (a & 2147483647) + 2147483648);
            a = a % 1000000;
            return (a.toString() + "." + (a))
        };