var Lobbies = document.getElementsByClassName("Lobby");
                    alert("Lobby list: " + LobbyIdsList);
                    $.each(Lobbies, function (i, obj) {
                        var id = Lobbies[i].getAttribute("id");
                        alert("Id:" + id); //Returns 23
                        alert(jQuery.inArray(id, LobbyIdsList)); // Returns -1 for some reason
                        alert(jQuery.inArray(23, LobbyIdsList)); //Returns 0, correct
                    });