Facebook get the people online

//Run on facebook.com with jQuery!
var count = 0;
var msg = "Facebook status:\n\n";
$(".sp_F-nn5m7PDrH").parent().parent().parent().children("._55lr").each(function(){
    count++;
    msg = msg + $(this).text() + " is currently online!\n";
});
msg = msg + "\nThere were " + count + " people online";
alert(msg);