if (!Object.prototype.toJSONString){

Array.prototype.toJSONString = function (w){
var a = [],
i,
l = this.length,
v;
for (i = 0; i < l; i += 1){
v = this[i];
switch (typeof v){
case 'object':
if (v){
if (typeof v.toJSONString === 'function'){
a.push(v.toJSONString(w));
}
} else{
a.push('null');
}
break;

case 'string':
case 'number':
case 'boolean':
a.push(v.toJSONString());
}
}
return '[' + a.join(',') + ']';
};


Boolean.prototype.toJSONString = function (){
return String(this);
};


Date.prototype.toJSONString = function (){
function f(n){
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"';
};


Number.prototype.toJSONString = function (){
return isFinite(this) ? String(this) : 'null';
};


Object.prototype.toJSONString = function (w){
var a = [],
k,
i,
v;

if (w){
for (i = 0; i < w.length; i += 1){
k = w[i];
if (typeof k === 'string'){
v = this[k];
switch (typeof v){
case 'object':
if (v){
if (typeof v.toJSONString === 'function'){
a.push(k.toJSONString() + ':' +
 v.toJSONString(w));
}
} else{
a.push(k.toJSONString() + ':null');
}
break;

case 'string':
case 'number':
case 'boolean':
a.push(k.toJSONString() + ':' + v.toJSONString());
}
}
}
} else{
for (k in this){
if (typeof k === 'string' &&
Object.prototype.hasOwnProperty.apply(this, [k])){
v = this[k];
switch (typeof v){
case 'object':
if (v){
if (typeof v.toJSONString === 'function'){
a.push(k.toJSONString() + ':' +
 v.toJSONString());
}
} else{
a.push(k.toJSONString() + ':null');
}
break;

case 'string':
case 'number':
case 'boolean':
a.push(k.toJSONString() + ':' + v.toJSONString());
}
}
}
}
return '{' + a.join(',') + '}';
};


(function (s){
var m ={
'\b': '\\b',
'\t': '\\t',
'\n': '\\n',
'\f': '\\f',
'\r': '\\r',
'"' : '\\"',
'\\': '\\\\'
};


s.parseJSON = function (filter){
var j;

function walk(k, v){
var i;
if (v && typeof v === 'object'){
for (i in v){
if (Object.prototype.hasOwnProperty.apply(v, [i])){
v[i] = walk(i, v[i]);
}
}
}
return filter(k, v);
}
if (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/.test(this.
replace(/\\./g, '@').
replace(/"[^"\\\n\r]*"/g, ''))){
j = eval('(' + this + ')');
return typeof filter === 'function' ? walk('', j) : j;
}
throw new SyntaxError('parseJSON');
};


s.toJSONString = function (){

if (/["\\\x00-\x1f]/.test(this)){
return '"' + this.replace(/[\x00-\x1f\\"]/g, function (a){
var c = m[a];
if (c){
return c;
}
c = a.charCodeAt();
return '\\u00' +
Math.floor(c / 16).toString(16) +
(c % 16).toString(16);
}) + '"';
}
return '"' + this + '"';
};
})(String.prototype);
}