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

	if($('chapter-container')){
		$('chapter-container').set('opacity', 0);
	
		var image_coord = $('image_container').getCoordinates($('player-container'));
		$('image_container').addEvents({
			mouseenter: function(){
				$('chapter-container').setStyles({
					width: image_coord.width,
					height: image_coord.height,
					top: image_coord.top,
					left: image_coord.left
				});
				$('chapter-container').tween('opacity', '0.8');
			},
	
			mouseleave: function(){
				$('chapter-container').tween('opacity', '0');
			}
		});
	}
});