JavaScript
google.load('visualization', '1', {packages: ['annotationchart']});
function drawVisualization() {
var data = new google.visualization.DataTable();
data.addColumn('date', 'Date');
data.addColumn('number', 'Sold Pencils');
data.addColumn('string', 'title1');
data.addColumn('string', 'text1');
data.addColumn('number', 'Sold Pens');
data.addColumn('string', 'title2');
data.addColumn('string', 'text2');
data.addRows([
[new Date(2008, 1, 1), 30000, null, null, 40645, null, null],
[new Date(2008, 1, 2), 14045, null, null, 20374, null, null],
[new Date(2008, 1, 3), 55022, null, null, 50766, null, null],
[new Date(2008, 1, 4), 75284, null, null, 14334, 'Out of Stock', 'Ran out of stock on pens at 4pm'],
[new Date(2008, 1, 5), 41476, 'Bought Pens', 'Bought 200k pens', 66467, null, null],
[new Date(2008, 1, 6), 33322, null, null, 39463, null, null]
]);
var annotatedtimeline = new google.visualization.AnnotationChart(document.getElementById('visualization'));
annotatedtimeline.draw(data, {'displayAnnotations': true});
}
google.setOnLoadCallback(drawVisualization);