//Get the context of the canvas element we want to select

var option = {
		
	//Boolean - If we show the scale above the chart data		是否显示图表数据的比例尺	
	scaleOverlay : true,
	
	//Boolean - If we want to override with a hard coded scale
	scaleOverride : false,
	
	//** Required if scaleOverride is true **
	//Number - The number of steps in a hard coded scale
	scaleSteps : null,
	//Number - The value jump in the hard coded scale
	scaleStepWidth : null,
	//Number - The scale starting value
	scaleStartValue : null,

	//String - Colour of the scale line	
	scaleLineColor : "rgba(0,0,0,.1)",
	
	//Number - Pixel width of the scale line	
	scaleLineWidth : 2,

	//Boolean - Whether to show labels on the scale	
	scaleShowLabels : true,
	
	//Interpolated JS string - can access value
	scaleLabel : "<%=value%>",
	
	//String - Scale label font declaration for the scale label   字体
	scaleFontFamily : "'Arial'",
	
	//Number - Scale label font size in pixels	  字体大小
	scaleFontSize : 12,
	
	//String - Scale label font weight style	  加粗
	scaleFontStyle : "bold",
	
	//String - Scale label font colour	    字体颜色
	scaleFontColor : "#666",	
	
	///Boolean - Whether grid lines are shown across the chart    是否显示网格线
	scaleShowGridLines : true,
	
	//String - Colour of the grid lines   网格线颜色
	scaleGridLineColor : "rgba(0,0,0,.05)",
	
	//Number - Width of the grid lines   
	scaleGridLineWidth : 1,	

	//Boolean - If there is a stroke on each bar	
	barShowStroke : false,
	
	//Number - Pixel width of the bar stroke	
	barStrokeWidth : 1,
	
	//Number - Spacing between each of the X value sets
	barValueSpacing : 6,
	
	//Number - Spacing between data sets within X values
	barDatasetSpacing : 1,
	  
	//Boolean - Whether to animate the chart   动画
	animation : true,

	//Number - Number of animation steps       动画时间
	animationSteps : 60,
	
	//String - Animation easing effect         动画执行曲线
	animationEasing : "easeOutQuart",

	//Function - Fires when the animation is complete  回调函数
	onAnimationComplete : null
		
	}