function setNight(){
	$('top').set('opacity','0.0');
    $('sun').set('background-position','95px 101px');
    $('logo').set('background-position','2px 101px');
}

function sunRise(){

    var body = new Fx.Tween('top', {duration: 1000, transition: 'sine:in:out', property: 'opacity'});
    var sun = new Fx.Tween('sun', {duration: 1000, transition: 'sine:in:out',  property: 'background-position'});
    var logo = new Fx.Tween('logo', {duration: 500, transition: 'back:in:out', property: 'background-position'});
    
    body.start(0,1);
    sun.start('95px 101px','95px 32px').wait(200).chain(
            function(){ logo.start('2px 101px','2px 56px'); 
    });
            
}

function sunUp() {

	
    var sun = new Fx.Tween('sun', {duration: 100, transition: 'sine:in:out',  property: 'background-position'});

	sun.start('95px 32px','95px 42px').wait(0).chain(function(){sun.start('95px 42px','95px 32px');});
}


window.addEvent('domready', function(){
	var home = $('top').hasClass('home');
	
	if(home){
		setNight();
		sunRise();
	}
});