Maybe you can use this as a starting point.
http://jsfiddle.net/DqAqu/4/
$(function () {
var chart = new Highcharts.Chart({
chart: {
renderTo: 'container',
backgroundColor: '#F5F5F5',
plotBackgroundColor: '#FFFFFF'
},
symbols: [ 'square', 'square' ],
legend: {
backgroundColor: '#F5F5F5',
layout: 'horizontal',
floating: true,
align: 'left',
verticalAlign: 'top',
x: 60,
y: 1,
shadow: false,
border: 0,
borderRadius: 0,
borderWidth: 0
},
xAxis: {
categories: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']
},
series: [{
data: [29.9, 71.5, 106.4, 129.2, 144.0, 176.0, 135.6, 148.5, 216.4, 194.1, 95.6, 54.4],
color: '#47D147'
}, {
data: [95.6, 54.4, 29.9, 71.5, 106.4, 129.2, 144.0, 176.0, 135.6, 148.5, 216.4, 194.1],
color: '#19A3FF'
}]
});
});