window.addEvent('domready', function() {

	var navImageHover = new Image();
	navImageHover.src = "images/navigation_aktiv.png";
	
	var subnavImage1 = new Image();
	subnavImage1.src = "images/subnavigation_angebot_gesamt_aktiv.png";
	var subnavImage2 = new Image();
	subnavImage2.src = "images/subnavigation_angebot_gesamt.png";

	var subnavImage3 = new Image();
	subnavImage3.src = "images/subnavigation_information_gesamt_aktiv.png";
	var subnavImage4 = new Image();
	subnavImage4.src = "images/subnavigation_information_gesamt.png";
	
	$$('#navigation a.sub-navigation-link').each(function(item, index){
				
		item.addEvent('click', function(e){
			var event = new Event(e);
			event.stop();
			event.target.blur();
		});
		
		
		var subnav = item.getParent().getElement('ul');
		subnav.set('tween', {duration:400, transition: Fx.Transitions.Sine.easeInOut});
		subnav.tween('opacity', 0);
		
		item.addEvent('mouseenter', function(e){
			subnav.set('opacity', 0);
			subnav.tween('opacity', 1);
			
		});
		
		/*
		subnav.addEvent('mouseleave', function(e){
			subnav.tween('opacity', 0);
		});
		*/
	});
	
});