// JavaScript Document
window.addEvent('domready',function() {
			/* settings */
			var list = $('news-feed').getFirst('ul');
			var items = list.getElements('li');
			var showDuration = 12000;
			var scrollDuration = 500;
			var index = 0;
			var height = items[0].getSize().y;
			/* action func */
			var move = function() {
				list.set('tween',{
					duration: scrollDuration,
					onComplete: function() {
						if(index == items.length - 1) {
							index = 0 - 1;
							list.scrollTo(0,0);
						}
					}
				}).tween('top',0 - (++index * height));
			};
			/* go! */
			window.addEvent('load',function() {
				
				move.periodical(showDuration);
			});
		});