grid.js in highcharts-js-rails-0.1.10

- old
+ new

@@ -5,10 +5,10 @@
 
 Highcharts.theme = {
 	colors: ['#058DC7', '#50B432', '#ED561B', '#DDDF00', '#24CBE5', '#64E572', '#FF9655', '#FFF263', '#6AF9C4'],
 	chart: {
 		backgroundColor: {
-			linearGradient: [0, 0, 500, 500],
+			linearGradient: { x1: 0, y1: 0, x2: 1, y2: 1 },
 			stops: [
 				[0, 'rgb(255, 255, 255)'],
 				[1, 'rgb(240, 240, 255)']
 			]
 		},