google.load("visualization", "1.1", {packages:["sankey"]});
      google.setOnLoadCallback(drawChart);
      
    var colors = ['#000000','#dccf5a'];

    var options = {
      height: 632,
      width: 200,
      sankey: {
        node: {
          colors: colors
        },
        link: {
          colors: colors
        }
      }
    };
      function drawChart() {
        var data = new google.visualization.DataTable();
        data.addColumn('string', 'From');
        data.addColumn('string', 'To');
        data.addColumn('number', 'Weight');
        data.addRows([
          [ 'תל אביב', 'X', 5 ],
          [ 'תל אביב', 'Y', 7 ],
          [ 'תל אביב', 'Z', 6 ],
          [ 'ירושליים', 'X', 2 ],
          [ 'רמת גן', 'Y', 9 ],
          [ 'רמת גן', 'Z', 4 ]
        ]);

        // Instantiates and draws our chart, passing in some options.
        var chart = new google.visualization.Sankey(document.getElementById('sankey_basic'));
        chart.draw(data, options);
      }