gistfile1.txt

    add : function(key, o){
        if(arguments.length == 1){
            o = key;
            key = this.getKey(o);
            debugger;
        }
        if(typeof key != 'undefined' && key !== null){
            var old = this.map[key];
            if(typeof old != 'undefined'){
                return this.replace(key, o);
            }
            this.map[key] = o;
        }
        this.length++;
        this.items.push(o);
        this.keys.push(key);
        this.fireEvent('add', this.length-1, o, key);
        return o;
    },