Array2json

function array2json(arr) {
    var parts = [];
    var is_list = (Object.prototype.toString.apply(arr) === '[object Array]');
 
    for(var key in arr) {
    	var value = arr[key];
        if(typeof value == "object") { //Custom handling for arrays
            if(is_list) parts.push(array2json(value)); 
            else parts[key] = array2json(value);
        } else {
            var str = "";
            if(!is_list) str = '"' + key + '":';
 
            //Custom handling for multiple data types
            if(typeof value == "number") str += value; //Numbers
            else if(value === false) str += 'false'; //The booleans
            else if(value === true) str += 'true';
            else str += '"' + value + '"'; //All other things
            // :TODO: Is there any more datatype we should be in the lookout for? (Functions?)
 
            parts.push(str);
        }
    }
    var json = parts.join(",");
 
    if(is_list) return '[' + json + ']';//Return numerical JSON
    return '{' + json + 
    '}';//Return associative JSON
}