/** 
 *
 * JSON (Javascript Object Notation) Javascript Prototype additions 
 * 1) To enable the conversion of javascript variable types to JSON Strings
 * 2) To convert JSON strings to thier equivilent Javascript types
 *
 */
(
	function () {
	    var m = {
	            '\b': '\\b',
	            '\t': '\\t',
	            '\n': '\\n',
	            '\f': '\\f',
	            '\r': '\\r',
	            '"' : '\\"',
	            '\\': '\\\\'
	        },
	        s = {
	            array: function (x) {
	                var a = ['['], b, f, i, l = x.length, v;
	                for (i = 0; i < l; i += 1) {
	                    v = x[i];
	                    f = s[typeof v];
	                    if (f) {
	                        v = f(v);
	                        if (typeof v == 'string') {
	                            if (b) {
	                                a[a.length] = ',';
	                            }
	                            a[a.length] = v;
	                            b = true;
	                        }
	                    }
	                }
	                a[a.length] = ']';
	                return a.join('');
	            },
	            'boolean': function (x) {
	                return String(x);
	            },
	            'null': function (x) {
	                return "null";
	            },
	            number: function (x) {
	                return isFinite(x) ? String(x) : 'null';
	            },
	            object: function (x) {
	                if (x) {
	                    if (x instanceof Array) {
	                        return s.array(x);
	                    }
	                    var a = ['{'], b, f, i, v;
	                    for (i in x) {
	                        v = x[i];
	                        f = s[typeof v];
	                        if (f) {
	                            v = f(v);
	                            if (typeof v == 'string') {
	                                if (b) {
	                                    a[a.length] = ',';
	                                }
	                                a.push(s.string(i), ':', v);
	                                b = true;
	                            }
	                        }
	                    }
	                    a[a.length] = '}';
	                    return a.join('');
	                }
	                return 'null';
	            },
	            string: function (x) {
	                if (/["\\\x00-\x1f]/.test(x)) {
	                    x = x.replace(/([\x00-\x1f\\"])/g, function(a, b) {
	                        var c = m[b];
	                        if (c) {
	                            return c;
	                        }
	                        c = b.charCodeAt();
	                        return '\\u00' +
	                            Math.floor(c / 16).toString(16) +
	                            (c % 16).toString(16);
	                    });
	                }
	                return '"' + x + '"';
	            }
	        };
	
	    Object.prototype.toJSONString = function () {
	        return s.object(this);
	    };
	
	    Array.prototype.toJSONString = function () {
	        return s.array(this);
	    };
	}
)();

String.prototype.parseJSON = function () {
    try {
        return !(/[^,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]/.test(
                this.replace(/"(\\.|[^"\\])*"/g, ''))) &&
            eval('(' + this + ')');
    } catch (e) {
        return false;
    }
};