function rate(stars, content_id, contest_id, profile_nick){
	var base_url = 'http://' +  location.hostname; 
	
	new Ajax.Request(base_url + '/rate/rate.php?content_id=' + content_id + '&stars=' + stars + '&contest_id=' + contest_id + '&profile_nick=' + profile_nick, {
		method: 'get',
		onSuccess: function(transport) {
			if(document.getElementById('footerRatingLightBox')){ // votazione da lightbox (foto)
				document.getElementById('footerRatingLightBox').innerHTML = '<b>' + transport.responseText + '</b>';
			}
			else{ // votazione da sito (video)
				document.getElementById('videoRating').innerHTML = '<b>' + transport.responseText + '</b>';
			}
		}
	});
}