function change_rate_song(id_song, action){
	if(action == 'up'){
		if(golos == 1){
			return false;
		}
		golos = 1;
	}
	if(action == 'down'){
		if(golos == -1){
			return false;
		}
		golos = -1;
	}
		$.ajax({
			type: "POST",
			url: "/ajax/rating_song.php",
			data: "id_song=" + id_song + "&action=" + action,
			cache: false,  
			success: function(html){  
				$("#rating_song").html(html);  
			}  
		});  
	return false;
}