function changeZitat() {
	var i = parseInt($('lastItem').value);
	var j = parseInt($('itemsCount').value)-1;
	var x = new Chain();
	
	if (i<j) {
		$('lastItem').value = parseInt(i)+1;
		var k = parseInt(i)+1;
	}
	else {
		$('lastItem').value = 0;
		var k=0;
	}	
	
	var shrink = function() {
		var ele = 'zitat_' + i;

		var shrinkDiv = new Fx.Tween(ele, {duration: 2000});
		shrinkDiv.start('height', 0);
//		var shrinkDiv = new Fx.Style(ele,
//				'height', { duration: 2000 });
//				shrinkDiv.start(0);
	}
	
	var grow = function() {
		var ele = 'zitat_' + k;

		var growDiv = new Fx.Tween(ele, {duration: 2000});
		growDiv.start('height', 200);

//		var growDiv = new Fx.Style(ele,
//				'height', {duration: 2000});
//				growDiv.start(200);
		}
	
	x.chain(shrink);
	x.chain(grow);
	x.callChain();
	x.callChain.delay(2000, x);

}