[silin]

function timerHandler(event:TimerEvent):void
{
	var items:Array = data.slice(0, tickItems)
	trace( "items : " + items );
	for (var j:int = 0; j < tickItems; j++) 
	{
		data.push(data.shift());
	}
}

Добавлено через 10 минут

function timerHandler(event:TimerEvent):void
{
	var items:Array = data.splice(0, tickItems);
	trace( "items : " + items );
	data=data.concat(items);
}