/*    json.js    2008-11-21    Public Domain    No warranty expressed or implied. Use at your own risk.    This file has been superceded by http://www.JSON.org/json2.js    See http://www.JSON.org/js.html    This file adds these methods to JavaScript:        object.toJSONString(whitelist)            This method produce a JSON text from a JavaScript value.            It must not contain any cyclical references. Illegal values            will be excluded.            The default conversion for dates is to an ISO string. You can            add a toJSONString method to any date object to get a different            representation.            The object and array methods can take an optional whitelist            argument. A whitelist is an array of strings. If it is provided,            keys in objects not found in the whitelist are excluded.        string.parseJSON(filter)            This method parses a JSON text to produce an object or            array. It can throw a SyntaxError exception.            The optional filter parameter is a function which can filter and            transform the results. It receives each of the keys and values, and            its return value is used instead of the original value. If it            returns what it received, then structure is not modified. If it            returns undefined then the member is deleted.            Example:            // Parse the text. If a key contains the string 'date' then            // convert the value to a date.            myData = text.parseJSON(function (key, value) {                return key.indexOf('date') >= 0 ? new Date(value) : value;            });    This file will break programs with improper for..in loops. See    http://yuiblog.com/blog/2006/09/26/for-in-intrigue/    This file creates a global JSON object containing two methods: stringify    and parse.        JSON.stringify(value, replacer, space)            value       any JavaScript value, usually an object or array.            replacer    an optional parameter that determines how object                        values are stringified for objects. It can be a                        function or an array of strings.            space       an optional parameter that specifies the indentation                        of nested structures. If it is omitted, the text will                        be packed without extra whitespace. If it is a number,                        it will specify the number of spaces to indent at each                        level. If it is a string (such as '\t' or '&nbsp;'),                        it contains the characters used to indent at each level.            This method produces a JSON text from a JavaScript value.            When an object value is found, if the object contains a toJSON            method, its toJSON method will be called and the result will be            stringified. A toJSON method does not serialize: it returns the            value represented by the name/value pair that should be serialized,            or undefined if nothing should be serialized. The toJSON method            will be passed the key associated with the value, and this will be            bound to the object holding the key.            For example, this would serialize Dates as ISO strings.                Date.prototype.toJSON = function (key) {                    function f(n) {                        // Format integers to have at least two digits.                        return n < 10 ? '0' + n : n;                    }                    return this.getUTCFullYear()   + '-' +                         f(this.getUTCMonth() + 1) + '-' +                         f(this.getUTCDate())      + 'T' +                         f(this.getUTCHours())     + ':' +                         f(this.getUTCMinutes())   + ':' +                         f(this.getUTCSeconds())   + 'Z';                };            You can provide an optional replacer method. It will be passed the            key and value of each member, with this bound to the containing            object. The value that is returned from your method will be            serialized. If your method returns undefined, then the member will            be excluded from the serialization.            If the replacer parameter is an array of strings, then it will be            used to select the members to be serialized. It filters the results            such that only members with keys listed in the replacer array are            stringified.            Values that do not have JSON representations, such as undefined or            functions, will not be serialized. Such values in objects will be            dropped; in arrays they will be replaced with null. You can use            a replacer function to replace those with JSON values.            JSON.stringify(undefined) returns undefined.            The optional space parameter produces a stringification of the            value that is filled with line breaks and indentation to make it            easier to read.            If the space parameter is a non-empty string, then that string will            be used for indentation. If the space parameter is a number, then            the indentation will be that many spaces.            Example:            text = JSON.stringify(['e', {pluribus: 'unum'}]);            // text is '["e",{"pluribus":"unum"}]'            text = JSON.stringify(['e', {pluribus: 'unum'}], null, '\t');            // text is '[\n\t"e",\n\t{\n\t\t"pluribus": "unum"\n\t}\n]'            text = JSON.stringify([new Date()], function (key, value) {                return this[key] instanceof Date ?                    'Date(' + this[key] + ')' : value;            });            // text is '["Date(---current time---)"]'        JSON.parse(text, reviver)            This method parses a JSON text to produce an object or array.            It can throw a SyntaxError exception.            The optional reviver parameter is a function that can filter and            transform the results. It receives each of the keys and values,            and its return value is used instead of the original value.            If it returns what it received, then the structure is not modified.            If it returns undefined then the member is deleted.            Example:            // Parse the text. Values that look like ISO date strings will            // be converted to Date objects.            myData = JSON.parse(text, function (key, value) {                var a;                if (typeof value === 'string') {                    a =/^(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2}(?:\.\d*)?)Z$/.exec(value);                    if (a) {                        return new Date(Date.UTC(+a[1], +a[2] - 1, +a[3], +a[4],                            +a[5], +a[6]));                    }                }                return value;            });            myData = JSON.parse('["Date(09/09/2001)"]', function (key, value) {                var d;                if (typeof value === 'string' &&                        value.slice(0, 5) === 'Date(' &&                        value.slice(-1) === ')') {                    d = new Date(value.slice(5, -1));                    if (d) {                        return d;                    }                }                return value;            });    This is a reference implementation. You are free to copy, modify, or    redistribute.    This code should be minified before deployment.    See http://javascript.crockford.com/jsmin.html    USE YOUR OWN COPY. IT IS EXTREMELY UNWISE TO LOAD CODE FROM SERVERS YOU DO    NOT CONTROL.*//*jslint evil: true *//*global JSON *//*members "", "\b", "\t", "\n", "\f", "\r", "\"", JSON, "\\", apply,    call, charCodeAt, getUTCDate, getUTCFullYear, getUTCHours,    getUTCMinutes, getUTCMonth, getUTCSeconds, hasOwnProperty, join,    lastIndex, length, parse, parseJSON, prototype, push, replace, slice,    stringify, test, toJSON, toJSONString, toString, valueOf*/// Create a JSON object only if one does not already exist. We create the// methods in a closure to avoid creating global variables.if (!this.JSON) {    JSON = {};}(function () {    function f(n) {        // Format integers to have at least two digits.        return n < 10 ? '0' + n : n;    }    if (typeof Date.prototype.toJSON !== 'function') {        Date.prototype.toJSON = function (key) {            return this.getUTCFullYear()   + '-' +                 f(this.getUTCMonth() + 1) + '-' +                 f(this.getUTCDate())      + 'T' +                 f(this.getUTCHours())     + ':' +                 f(this.getUTCMinutes())   + ':' +                 f(this.getUTCSeconds())   + 'Z';        };        String.prototype.toJSON =        Number.prototype.toJSON =        Boolean.prototype.toJSON = function (key) {            return this.valueOf();        };    }    var cx = /[\u0000\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,        escapable = /[\\\"\x00-\x1f\x7f-\x9f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,        gap,        indent,        meta = {    // table of character substitutions            '\b': '\\b',            '\t': '\\t',            '\n': '\\n',            '\f': '\\f',            '\r': '\\r',            '"' : '\\"',            '\\': '\\\\'        },        rep;    function quote(string) {// If the string contains no control characters, no quote characters, and no// backslash characters, then we can safely slap some quotes around it.// Otherwise we must also replace the offending characters with safe escape// sequences.        escapable.lastIndex = 0;        return escapable.test(string) ?            '"' + string.replace(escapable, function (a) {                var c = meta[a];                return typeof c === 'string' ? c :                    '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4);            }) + '"' :            '"' + string + '"';    }    function str(key, holder) {// Produce a string from holder[key].