function vote(link, aev_id, direction){
    var link = $(link);

    target = "/user_preview/" + aev_id + "/vote/" + direction + "/";

    $.post(
        target,
        {},
        function(data){
            var message = data.score.score + " points after "+data.score.num_votes+" votes updated";
            link.parent().next().html(message);
        }
        , "json"
    );
}