title: Google Pie chart not displaying in IE <= 8
body: <p>I need to execute this .php file for different IE versions but the following errors appear when I emulate to:</p>
  
  <ul>
  <li>IE 8:"gvjs_VL" is undefined.</li>
  <li>IE &lt;8: "JSON" is undefined.</li>
  </ul>
  
  <p>I have tried also to use json2 when the IE version was &lt;= 8 but it did not solve the issue. 
  What could be happening?</p>
  
  <p>Thank you in advance. :)</p>
  
  <pre><code>&lt;!DOCTYPE html&gt;
  &lt;?php 
  $chartData = array(array("Area" , "Number of people"),
                     array("A"    , 5000),
                     array("B"    , 8000),
                     array("C"    , 400),
                     array("D"    , 40000),
                     array("E"    , 1000),
                     array("F"    , 1400 ));  
  ?&gt;
  
  &lt;html lang="en"&gt;
  &lt;head&gt;
      &lt;meta charset="UTF-8"&gt;
      &lt;meta http-equiv="X-UA-Compatible" content="IE=edge" &gt;
      &lt;link rel="stylesheet" href="main.css"&gt;
  &lt;/head&gt;
  &lt;body&gt;
  
  &lt;div class="chartContainer"&gt;
      &lt;div id="piechart" class="piechart"&gt;
          &lt;script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"&gt;&lt;/script&gt;
  
          &lt;script type="text/javascript"&gt;
          // Load google charts
          google.charts.load('current', {'packages':['corechart']});
          google.charts.setOnLoadCallback(drawChart);
  
          // Draw the chart and set the chart values
          function drawChart() {
            var data = google.visualization.arrayToDataTable( &lt;?php echo json_encode($chartData, JSON_NUMERIC_CHECK); ?&gt;);
  
            // Optional; add a title and set the width and height of the chart
            var options = {fontName:'Arial', legend:{position: 'labeled', maxLines:15, alignment:'start'}, 
                           textStyle: {color: 'black', fontSize: 30}, 
                           pieHole: 0.4, sliceVisibilityThreshold:0.0,
                           chartArea: {   
                                       width: "100%",
                                       top: "0%",
                                       left: "0%"},
  
                           };
  
            // Display the chart inside the div&gt; element with id="piechart"
            var chart = new google.visualization.PieChart(document.getElementById('piechart'));
            chart.draw(data, options);
          }
      &lt;/script&gt;
      &lt;/div&gt;
  
  &lt;/div&gt;
  &lt;/body&gt;
  </code></pre>