orbit-basic/app/views/admin/dashboards/_traffic_loading.erb

<div class="box-header">
    <h2>
        <i class="icons-book-2"></i>
        <span class="break"></span>
        <%= t(:monthly_traffic)%>
    </h2>
</div>
<div class="box-content">
    <div id="month_traffic" style="min-width: 310px; margin: 0 auto">
        <%= line_chart  get_month_traffic, :height => "200px", :name => 'Visit',
                    :library => {
                        legend: 'none',
                        chartArea:{ width: '95%', left: 50, right: 0},
                        hAxis:{format:'MMM-d',gridlines:{color: '#CCC', count: 31}},
                        vAxis:{minValue:-100,viewWindowMode: 'maximized'}
                     } %>
    </div>
</div>
<script type="text/javascript">
    renderLineChart = function (element, series, opts) {
      waitForLoaded(function () {
        var options = jsOptions(series, opts);
        var data = createDataTable(series, "datetime");
        var formatter = new google.visualization.DateFormat({ 
             pattern: options.pattern 
        }); 
        formatter.format(data, 0);
        var chart = new google.visualization.LineChart(element);
        resize(function () {
          chart.draw(data, options);
        });
      });
    };
</script>