function viz_nvd3(token_name, json_callback) {
  function UTC(dttm){
    return v = new Date(dttm.getUTCFullYear(), dttm.getUTCMonth(), dttm.getUTCDate(),  dttm.getUTCHours(), dttm.getUTCMinutes(), dttm.getUTCSeconds());
  }
  var tickMultiFormat = d3.time.format.multi([
    [".%L", function(d) { return d.getMilliseconds(); }],
    [":%S", function(d) { return d.getSeconds(); }],
    ["%I:%M", function(d) { return d.getMinutes(); }],
    ["%I %p", function(d) { return d.getHours(); }],
    ["%a %d", function(d) { return d.getDay() && d.getDate() != 1; }],
    ["%b %d", function(d) { return d.getDate() != 1; }],
    ["%B", function(d) { return d.getMonth(); }],
    ["%Y", function() { return true; }]
  ]);
  colors = [
    "#FF5A5F", "#007A87", "#7B0051", "#00D1C1", "#8CE071", "#FFB400",
    "#FFAA91", "#B4A76C", "#9CA299", "#565A5C"
  ];
  var token = d3.select('#' + token_name);
  var jtoken = $('#' + token_name);
  var loading = $('#' + token_name).find("img.loading");
  var chart = $('#' + token_name).find("div.chart");
  var refresh = function() {
    chart.hide();
    loading.show();
    $.getJSON(json_callback, function(payload) {
      var data = payload.data;
      var viz = payload;
      var viz_type = viz.form_data.viz_type;
      $("#query_container").html(data.query);
      nv.addGraph(function() {
        if (viz_type === 'line') {
          if (viz.form_data.show_brush) {
            var chart = nv.models.lineWithFocusChart()
            var xext = chart.xAxis.scale().domain();
            chart
              .x2Axis
              .tickFormat(function (d) {return tickMultiFormat(UTC(new Date(d))); })
              .tickValues([]);
            chart.y2Axis.tickFormat(d3.format('.3s'));
          } else {
            var chart = nv.models.lineChart()
          }
          chart.interpolate(viz.form_data.line_interpolation);
          chart.xScale(d3.time.scale());
          chart.xAxis
            .showMaxMin(false)
            .tickFormat(function (d) {return tickMultiFormat(new Date(d)); });
          chart.showLegend(viz.form_data.show_legend);
          chart.yAxis.tickFormat(d3.format('.3s'));
          if (viz.form_data.contribution || viz.form_data.num_period_compare) {
            chart.yAxis.tickFormat(d3.format('.3p'));
            chart.y2Axis.tickFormat(d3.format('.3p'));
          }

        } else if (viz_type === 'dist_bar') {
          var chart = nv.models.multiBarChart()
            .showControls(true)   //Allow user to switch between 'Grouped' and 'Stacked' mode.
            .groupSpacing(0.1);   //Distance between each group of bars.
          chart.xAxis
            .showMaxMin(false);
          chart.yAxis.tickFormat(d3.format('.3s'));

        } else if (viz_type === 'pie') {
          var chart = nv.models.pieChart()
          chart.showLegend(viz.form_data.show_legend);
          if (viz.form_data.donut) {
            chart.donut(true);
            chart.donutLabelsOutside(true);
          }
          chart.labelsOutside(true);
          chart.cornerRadius(true);

        } else if (viz_type === 'column') {
          var chart = nv.models.multiBarChart()
            .reduceXTicks(false)
            .rotateLabels(45) ;
          chart.yAxis.tickFormat(d3.format('.3s'));

        } else if (viz_type === 'compare') {
          var chart = nv.models.cumulativeLineChart();
          chart.xScale(d3.time.scale());
          chart.xAxis
            .showMaxMin(false)
            .tickFormat(function (d) {return tickMultiFormat(new Date(d)); });
          chart.showLegend(viz.form_data.show_legend);
          chart.yAxis.tickFormat(d3.format('.3p'));

        } else if (viz_type === 'bubble') {
          var chart = nv.models.scatterChart();
          chart.xAxis.tickFormat(d3.format('.3s'));
          chart.yAxis.tickFormat(d3.format('.3s'));
          chart.showLegend(viz.form_data.show_legend);
          chart.pointRange([5, 5000]);

        } else if (viz_type === 'area') {
          var chart = nv.models.stackedAreaChart();
          chart.xScale(d3.time.scale());
          chart.xAxis
            .showMaxMin(false)
            .tickFormat(function (d) {return tickMultiFormat(new Date(d)); });
          chart.showLegend(viz.form_data.show_legend);
          chart.yAxis.tickFormat(d3.format('.3s'));
        }

        if ((viz_type === "line" || viz_type === "area") && viz.form_data.rich_tooltip) {
          chart.useInteractiveGuideline(true);
        }
        if (viz.form_data.y_axis_zero) {
          chart.forceY([0, 1]);
        }
        else if (viz.form_data.y_log_scale) {
          chart.yScale(d3.scale.log());
        }
        if (viz.form_data.x_log_scale) {
          chart.xScale(d3.scale.log());
        }

        chart.duration(0);

        token.select('.chart').append("svg")
          .datum(data.chart_data)
          .transition().duration(500)
          .call(chart);

        return chart;
      });
      chart.show();
      loading.hide();
  }).fail(function(xhr) {
      var err = '<div class="alert alert-danger">' + xhr.responseText  + '</div>';
      loading.hide();
      chart.show();
      chart.html(err);
    });
  };
  refresh();
  jtoken.parent().find("a.refresh").click(refresh);
}