$JSKK.Class.create
(
	{
		$namespace:	'helper',
		$name:		'InstanceTracker'
	}
)
(
	// Static Block
	{

	},

	// Instance Block
	{
		_instances: [],
		_nextID: 1,
		length: 0,

		add: function(instance)
		{
			this._instances.push(instance);
			this.length++;
			instance.set('id', this._nextID++);
		},

		getByID: function(id)
		{
			for(var i in this._instances)
			{
				var instance = this._instances[i];
				if(typeof instance != 'object') continue;

				if(instance.get('id') == id) return instance;
			}
			throw new Error('no instance found with id', id);
		},

		removeByID: function(id)
		{
			for(var i in this._instances)
			{
				var instance = this._instances[i];
				if(typeof instance != 'object') continue;

				if(instance.get('id') == id)
				{
					this._instances.splice(i, 1);
					this.length--;
					return true;
				}
			}
			throw new Error('no instance found with id', id);
		},

		deleteByID: function(id)
		{
			for(var i in this._instances)
			{
				var instance = this._instances[i];
				if(typeof instance != 'object') continue;

				if(instance.get('id') == id)
				{
					delete this._instances[i];
					this.length--;
					return true;
				}
			}
			throw new Error('no instance found with id', id);
		},

		_each: function()
		{
			// todo: magix
		}
	}
);