window.addEvent('domready', function() {
		var check = $('listing_navigate');
		
		if(check != null) {
			
			var scroll = new Fx.Scroll('news_listing', {
					duration: 700,
				   wait: true,
					transition: Fx.Transitions.Sine.easeOut
				}).start(0, 0) ;
			
			

			$('listing_navigate').addEvent('click', function(e) { 
				e.stop();
				
				var buttonClass = $('listing_navigate').get('class'); 
				
				if(buttonClass == 'older') {
					$('listing_navigate').set('class', 'newer');
					scroll.toBottom();
				}
				else {
					$('listing_navigate').set('class', 'older');
					scroll.toTop();
				}
			});
			
		}
});