$.extend({
            RoundString: function (len) {
                len = len || 8;
                var str = ['1', '2', '3', '4', '5', '6', '7', '8', '9', '0'];
                var hash = '';
                for (i = 0; i < len; i++) {
                    var r = str[Math.ceil(Math.random() * 100)];
                    if (r != undefined) hash += r;
                }
                if (hash.length < len) hash += $.RoundString(len - hash.length);
                return hash;
            },
            RoundPhone: function () {
                var phoneType = [13, 15, 18, 170];
                var prefix = phoneType[Math.ceil(Math.random() * phoneType.length - 1)];
                var phone = prefix + $.RoundString(11 - prefix.toString().length);
                return phone;
            }
        });