function deploy (div) {

    // toggle for branch lengths
    var sel = d3.select(div)
        .append("select")
        .on ("change", function () {
            tree_vis.layout().scale(this.value === "use_branch_lengths");
            tree_vis.update();
        })
    sel
        .append("option")
        .attr("value", "use_branch_lengths")
        .text("Use branch lengths");
    sel
        .append("option")
        .attr("value", "ignore_branch_lengths")
        .text("Ignore branch lengths");

    var tree_vis = tnt.tree()
        .data (tnt.tree.parse_newick(newick))
        .layout (tnt.tree.layout.vertical()
            .width(650)
        )
        .label (tnt.tree.label.text()
            .height(20)
        );
    tree_vis(div);
}

// The tree to plot
var newick = "(((((((((Homo_sapiens:0.0067,Pan_troglodytes:0.006667):0.00225,Pongo_abelii:0.018318):0.00717,Nomascus_leucogenys:0.025488):0.00717,(Macaca_mulatta:0.007853,Papio_hamadryas:0.007637):0.029618):0.021965,Callithrix_jacchus:0.066131):0.05759,Tarsius_syrichta:0.137823):0.011062,(Microcebus_murinus:0.092749,Otolemur_garnettii:0.129725):0.035463):0.015494,Tupaia_belangeri:0.186203):0.004937,(((((Mus_musculus:0.084509,Rattus_norvegicus:0.091589):0.197773,Dipodomys_ordii:0.211609):0.022992,Cavia_porcellus:0.225629):0.01015,Ictidomys_tridecemlineatus:0.148468):0.025746,(Oryctolagus_cuniculus:0.114227,Ochotona_princeps:0.201069):0.101463):0.015313);";