new PeriodicalExecuter(updateNews, 5);
function updateNews(){
	var op = {
			from: 1, to: 0.01,
			afterFinish: function(){
					new Ajax.Updater('news_home','_news_home.php', {
									 	onSuccess: function(){ 
											new Effect.Appear('news_home' ); }
									 }
									);
				}
		};

	new Effect.Fade('news_home',op);		
}