hello, I'm using JavaScript to play the data in a div as parameters to
plot. But if I try to put two charts on the same HTML does not work.

How do I use or how clearChart do this work.

Code is presented below:

<html>
  <head>
    <!--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()
      {
        // Pegando os dados da div - Tudo vem daqui
        var dados =
document.getElementById('chart_div').innerHTML;

        // Colunas do inicio até |
        var colunas = dados.substring(0, dados.indexOf('|'));
        // Ajustando os dados gerais
        dados = dados.substring(dados.indexOf('|') + 1);
        // Valores do gráfico até ||
        var valores = dados.substring(0, dados.indexOf('||'));
        // Ajustando os dados gerais
        dados = dados.substring(dados.indexOf('||') + 2);

        var titulo = dados;

        var data = new google.visualization.DataTable();

        data.clearChart;

        var colunaTipo = '';
        var colunaNome = '';

        while (colunas.length > 0)
        {
          colunaTipo  = colunas.substring(0, colunas.indexOf(';'));
          colunas     = colunas.substring(colunas.indexOf(';')+1);
          colunaNome  = colunas.substring(0, colunas.indexOf(';'));
          colunas     = colunas.substring(colunas.indexOf(';')
+1);

          data.addColumn(colunaTipo, colunaNome)
        }

        // Create the data table.

        //data.addColumn(colunaTipo, colunaNome);
        //data.addColumn('string', 'Ano');
        //data.addColumn('number', 'Total Acidente(s)');
        while (colunas.length > 0)
        {
          colunaTipo  = colunas.substring(0, colunas.indexOf(';'));
          colunas     = colunas.substring(colunas.indexOf(';')+1);
          colunaNome  = colunas.substring(0, colunas.indexOf(';'));
          colunas     = colunas.substring(colunas.indexOf(';')
+1);

          data.addColumn(colunaTipo, colunaNome)
        }

        var valoresRotulo = '';
        var valoresValor = '';

        while (valores.length > 0)
        {
          valoresRotulo  = valores.substring(0, valores.indexOf(';'));
          valores     = valores.substring(valores.indexOf(';')+1);
          valoresValor  = valores.substring(0, valores.indexOf(';'));
          valores     = valores.substring(valores.indexOf(';')
+1);
          // Gerando os dados
          data.addRows([ [valoresRotulo, parseFloat(valoresValor)] ]);
        }


        // Set chart options
        var options = {'title':titulo,
                       'width':400,
                       'height':300};

        // Instantiate and draw our chart, passing in some options.
        var chart = new
google.visualization.PieChart(document.getElementById('chart_div'));
        //chart.getChart().clearChart()
        chart.draw(data, options);

      }
    </script>
  </head>

  <body>
    <!--Div that will hold the pie chart-->
    <div id="chart_div">string;Ano;number;Total Acidente(s);|
2008;755980;2009;733365;2010;701496;||Acidentes de trabalho por ano</
div>
    <div id="chart_div">string;Ano;number;Total Acidente(s);|Masculino;
755980;Femino;733365;||Acidentes de trabalho por sexo (2008-2010)</
div>
  </body>
  <img src="http://chart.apis.google.com/chart?cht=p3&chd=t:
755980,733365,701496&chs=340x200&chdl=2008|2009|2012&chco=67087b|
e3007a|00a8eb|79c471" alt="" />
</html>

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