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+/*
+ * jQuery JSON Plugin
+ * version: 2.1 (2009-08-14)
+ *
+ * This document is licensed as free software under the terms of the
+ * MIT License: http://www.opensource.org/licenses/mit-license.php
+ *
+ * Brantley Harris wrote this plugin. It is based somewhat on the JSON.org 
+ * website's http://www.json.org/json2.js, which proclaims:
+ * "NO WARRANTY EXPRESSED OR IMPLIED. USE AT YOUR OWN RISK.", a sentiment that
+ * I uphold.
+ *
+ * It is also influenced heavily by MochiKit's serializeJSON, which is 
+ * copyrighted 2005 by Bob Ippolito.
+ */
+ 
+(function($) {
+    /** jQuery.toJSON( json-serializble )
+        Converts the given argument into a JSON respresentation.
+
+        If an object has a "toJSON" function, that will be used to get the representation.
+        Non-integer/string keys are skipped in the object, as are keys that point to a function.
+
+        json-serializble:
+            The *thing* to be converted.
+     **/
+    $.toJSON = function(o)
+    {
+        if (typeof(JSON) == 'object' && JSON.stringify)
+            return JSON.stringify(o);
+        
+        var type = typeof(o);
+    
+        if (o === null)
+            return "null";
+    
+        if (type == "undefined")
+            return undefined;
+        
+        if (type == "number" || type == "boolean")
+            return o + "";
+    
+        if (type == "string")
+            return $.quoteString(o);
+    
+        if (type == 'object')
+        {
+            if (typeof o.toJSON == "function") 
+                return $.toJSON( o.toJSON() );
+            
+            if (o.constructor === Date)
+            {
+                var month = o.getUTCMonth() + 1;
+                if (month < 10) month = '0' + month;
+
+                var day = o.getUTCDate();
+                if (day < 10) day = '0' + day;
+
+                var year = o.getUTCFullYear();
+                
+                var hours = o.getUTCHours();
+                if (hours < 10) hours = '0' + hours;
+                
+                var minutes = o.getUTCMinutes();
+                if (minutes < 10) minutes = '0' + minutes;
+                
+                var seconds = o.getUTCSeconds();
+                if (seconds < 10) seconds = '0' + seconds;
+                
+                var milli = o.getUTCMilliseconds();
+                if (milli < 100) milli = '0' + milli;
+                if (milli < 10) milli = '0' + milli;
+
+                return '"' + year + '-' + month + '-' + day + 'T' +
+                             hours + ':' + minutes + ':' + seconds + 
+                             '.' + milli + 'Z"'; 
+            }
+
+            if (o.constructor === Array) 
+            {
+                var ret = [];
+                for (var i = 0; i < o.length; i++)
+                    ret.push( $.toJSON(o[i]) || "null" );
+
+                return "[" + ret.join(",") + "]";
+            }
+        
+            var pairs = [];
+            for (var k in o) {
+                var name;
+                var type = typeof k;
+
+                if (type == "number")
+                    name = '"' + k + '"';
+                else if (type == "string")
+                    name = $.quoteString(k);
+                else
+                    continue;  //skip non-string or number keys
+            
+                if (typeof o[k] == "function") 
+                    continue;  //skip pairs where the value is a function.
+            
+                var val = $.toJSON(o[k]);
+            
+                pairs.push(name + ":" + val);
+            }
+
+            return "{" + pairs.join(", ") + "}";
+        }
+    };
+
+    /** jQuery.evalJSON(src)
+        Evaluates a given piece of json source.
+     **/
+    $.evalJSON = function(src)
+    {
+        if (typeof(JSON) == 'object' && JSON.parse)
+            return JSON.parse(src);
+        return eval("(" + src + ")");
+    };
+    
+    /** jQuery.secureEvalJSON(src)
+        Evals JSON in a way that is *more* secure.
+    **/
+    $.secureEvalJSON = function(src)
+    {
+        if (typeof(JSON) == 'object' && JSON.parse)
+            return JSON.parse(src);
+        
+        var filtered = src;
+        filtered = filtered.replace(/\\["\\\/bfnrtu]/g, '@');
+        filtered = filtered.replace(/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, ']');
+        filtered = filtered.replace(/(?:^|:|,)(?:\s*\[)+/g, '');
+        
+        if (/^[\],:{}\s]*$/.test(filtered))
+            return eval("(" + src + ")");
+        else
+            throw new SyntaxError("Error parsing JSON, source is not valid.");
+    };
+
+    /** jQuery.quoteString(string)
+        Returns a string-repr of a string, escaping quotes intelligently.  
+        Mostly a support function for toJSON.
+    
+        Examples:
+            >>> jQuery.quoteString("apple")
+            "apple"
+        
+            >>> jQuery.quoteString('"Where are we going?", she asked.')
+            "\"Where are we going?\", she asked."
+     **/
+    $.quoteString = function(string)
+    {
+        if (string.match(_escapeable))
+        {
+            return '"' + string.replace(_escapeable, function (a) 
+            {
+                var c = _meta[a];
+                if (typeof c === 'string') return c;
+                c = a.charCodeAt();
+                return '\\u00' + Math.floor(c / 16).toString(16) + (c % 16).toString(16);
+            }) + '"';
+        }
+        return '"' + string + '"';
+    };
+    
+    var _escapeable = /["\\\x00-\x1f\x7f-\x9f]/g;
+    
+    var _meta = {
+        '\b': '\\b',
+        '\t': '\\t',
+        '\n': '\\n',
+        '\f': '\\f',
+        '\r': '\\r',
+        '"' : '\\"',
+        '\\': '\\\\'
+    };
+})(jQuery);