Plotting build times with jQuery, Flot and DateJS

gistfile1.js

$(document).ready(
    function() {
        var builds = [
            {   url: "/build_results/start",
                legend: "Start"
            }
        ];

        $.each(builds, function(build_index, build) {
            $.get(build.url, function(data) {
                var rows = data.split(/\n/);
                var data_series = [];

                $.each(rows, function(row_index, row) {
                    if (row_index > 0) {
                        var tokens = row.split(",");
                        var build_duration = tokens[1];
                        var build_start_time = Date.parse(tokens[8]);
                        var build_status = tokens[3];

                        if (build_status == 'Passed') {
                            data_series.push([build_start_time.getTime(), build_duration]);
                        }
                    }
                });

                all_builds_series.push({label: build.legend, data: data_series});
            });
        });
    }).ajaxStop(function() {
        $.plot($("#all_builds"), all_builds_series, {
            xaxis: { mode: "time" },
            yaxis: { tickFormatter:
                        function(milliseconds) {
                            return new TimeSpan(milliseconds * 1000).toString("mm:ss");
                        }},
            legend: {   show: true,
                        noColumns: all_builds_series.length }
        });
    });