var defaultImage = 'universalhd_121x69.gif';

function changeThumb(img_name, episode) {
	if( ! img_name ){
		img_name = defaultImage;
	}

	vImage = document.getElementById('tonightThumb');
	vEpisode = document.getElementById('tonightEpisode');

	vImage.src= '/images/schedule_images/' + img_name;
	vEpisode.innerHTML = episode;
}