function ContentChanger(items) {
	this.counter = 0;
	this.items = items;
}

function rotateItem(cc) {
	if(cc.counter == cc.items.length-1) {
		cc.counter = 0;
	} else {
		cc.counter = cc.counter + 1;
	}
}

function changeContent(elem,cc) {
	new Effect.Fade(elem,{afterFinish: function() {
		rotateItem(cc);
		$(elem).innerHTML = cc.items[cc.counter];
		new Effect.Appear(elem);
	}});
}