var ids = function (div) {

    var board = tnt.board().from(20).to(500).max(500).width(950);

    // Reload button
    var reload = d3.select(div)
        .append("button")
        .text("Show ids (in console)")
        .style("margin", "10px")
        .on("click", function () {
            var tracks = board.tracks();
            for (var i=0; i<tracks.length; i++) {
                console.log("ID " + tracks[i].id());
            }

            var pins_track = board.find_track("pins");
            console.log("Pins track: ");
            console.log(pins_track);
        });

    // Axis track
    var axis_track = tnt.board.track()
        .height(0)
        .color("white")
        .display(tnt.board.track.feature.axis()
        .orientation("top")
    );

    // Pin track
    var pin_track = tnt.board.track()
        .id ("pins")
        .height(60)
        .color("white")
        .display(tnt.board.track.feature.pin()
            .domain([0.3, 1.2])
            .color("red")
        )
        .data(tnt.board.track.data.sync()
            .retriever (function () {
                return [
                    {
                        pos : 200,
                        val : 0.5,
                        label : "1"
                    },
                    {
                        pos : 355,
                        val : 0.8,
                        label : "2"
                    },
                    {
                        pos : 100,
                        val : 0.3,
                        label : "3"
                    },
                    {
                        pos : 400,
                        val : 1,
                        label : "4"
                    }
                ];
            })
        );

    board
        .add_track(axis_track)
        .add_track(pin_track);
    board(div);
    board.start();
};