[JavaScript] Białe Tłoo jak usunac Opcje

[robert5555]

Mam taki problem jak usunąć z tego wykresu białe tło

http://scr.hu/7bt/1jx1n

[PHP] pobierz, plaintext 
    <!--Load the AJAX API-->
    <script type="text/javascript" src="https://www.google.com/jsapi"></script>
    <script type="text/javascript">
 
      // Load the Visualization API and the piechart package.
      google.load('visualization', '1.0', {'packages':['corechart']});
 
      // Set a callback to run when the Google Visualization API is loaded.
      google.setOnLoadCallback(drawChart);
 
      // Callback that creates and populates a data table,
      // instantiates the pie chart, passes in the data and
      // draws it.
      function drawChart() {
 
        // Create the data table.
        var data = new google.visualization.DataTable();
        data.addColumn('string', 'Topping');
        data.addColumn('number', 'Slices');
        data.addRows([
          ['Jinno', <?php echo $n ?>],
          ['Shinsoo', <?php echo $c ?>],
          ['Chunjo', <?php echo $z ?>],
        ]);
 
        // Set chart options
        var options = {'title':'Statystyki z',
                       'width':400,
                       'height':300};
 
        // Instantiate and draw our chart, passing in some options.
        var chart = new google.visualization.PieChart(document.getElementById('chart_div2'));
        chart.draw(data, options);
      }
    </script>
  </head>
[PHP] pobierz, plaintext 

[robert5555]

I dalej mam problem chce zeby nie było tła zeby było przezroczyste ;x bez tłą