This is a simple demo of the great High Charts.

You can find all the files needed for High Charts and jQuery.

<!doctype html>
<html lang="en">
<head>

</head>
<body>
	<script src="jquery.js"></script>
	<script src="highcharts.js"></script>
	<script src="exporting.js"></script>
	
	<div id="container"></div>

	<script>
	$(function () {
	$('#container').highcharts({
	title: {
	text: 'Monthly Average Temperature',
	x: -20 //center
	},
	
	subtitle: {
	text: 'Source: WorldClimate.com',
	x: -20
	},
	
	chart: {
        type: 'line',
        zoomType: 'xy'
    },
	
	xAxis: {
	categories: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun',
	'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']
	},
	yAxis: {
	title: {
	text: 'Temperature (°C)'
	},
	
	plotLines: [{
	value: 0,
	width: 1,
	color: '#808080'
	}]
	},
	
	tooltip: {
	valueSuffix: '°C'
	},
	
	legend: {
	layout: 'vertical',
	align: 'right',
	verticalAlign: 'middle',
	borderWidth: 0
	},
	
	series: [{
	name: 'Tokyo',
	data: [7.0, 6.9, 9.5, 14.5, 18.2, 21.5, 25.2, 26.5, 23.3, 18.3, 13.9, 9.6]
	}, {
	name: 'New York',
	data: [-0.2, 0.8, 5.7, 11.3, 17.0, 22.0, 24.8, 24.1, 20.1, 14.1, 8.6, 2.5]
	}, {
	name: 'Berlin',
	data: [-0.9, 0.6, 3.5, 8.4, 13.5, 17.0, 18.6, 17.9, 14.3, 9.0, 3.9, 1.0]
	}, {
	name: 'London',
	data: [3.9, 4.2, 5.7, 8.5, 11.9, 15.2, 17.0, 16.6, 14.2, 10.3, 6.6, 4.8]
	}]
	});
    });
    </script>

</body>
</html>