function NewsTicker()
{
	this.visible  = 0;
	this.elements = $("#news_ticker").find("div");
}
NewsTicker.prototype.change = function()
{
	if (this.visible < (this.elements.length - 1)) {
		next = this.visible + 1;
	} else {
		next = 0;
	}
	
	this.elements[this.visible].className = 'down';
	this.elements[next].className = 'up';
	
	this.visible = next;
}