Reusing the same config template object for multiple charts

HTML

<script type="text/javascript" src="http://www.amcharts.com/lib/3/amcharts.js"></script>
<script type="text/javascript" src="http://www.amcharts.com/lib/3/serial.js"></script>
<script type="text/javascript" src="http://www.amcharts.com/lib/3/themes/none.js"></script>
<div id="chartdiv"></div>
<div id="chartdiv2"></div>

CSS

#chartdiv, #chartdiv2 {
	width		: 100%;
	height		: 200px;
	font-size	: 11px;
}

JavaScript

// custom config cloner function
AmCharts.cloneObject = function (obj) {
    return JSON.parse(JSON.stringify(obj));
};

// define config template
var configTemplate = {
    "type": "serial",
    "theme": "none",
    "valueAxes": [{
        "gridColor":"#FFFFFF",
		"gridAlpha": 0.2,
		"dashLength": 0
    }],
    "gridAboveGraphs": true,
    "startDuration": 1,
    "graphs": [{
        "balloonText": "[[category]]: <b>[[value]]</b>",
        "fillAlphas": 0.8,
        "lineAlpha": 0.2,
        "type": "column",
        "valueField": "visits"		
    }],
    "chartCursor": {
        "categoryBalloonEnabled": false,
        "cursorAlpha": 0,
        "zoomable": false
    },
    "categoryField": "country",
    "categoryAxis": {
        "gridPosition": "start",
        "gridAlpha": 0
    }
};

var chartData1 = [{
    "country": "USA",
    "visits": 2025,
    "tempvisit":1015
}, {
    "country": "China",
    "visits": 1882
}, {
    "country": "Japan",
    "visits": 1809
}, {
    "country": "Germany",
    "visits": 1322
}, {
    "country": "UK",
    "visits": 1122
}, {
    "country": "France",
    "visits": 1114
}];

var chartData2 = [{
    "country": "USA",
    "visits": 523
}, {
    "country": "China",
    "visits": 888
}, {
    "country": "Japan",
    "visits": 512
}, {
    "country": "Germany",
    "visits": 320
}, {
    "country": "UK",
    "visits": 451
}, {
    "country": "France",
    "visits": 153
}];

// build first chart
var chartConfig1 = AmCharts.cloneObject(configTemplate);
chartConfig1.dataProvider = chartData1;
chartConfig1.graphs[1] = chartConfig1.graphs[0];
chartConfig1.graphs[0].valueField = "visits";
chartConfig1.graphs[1].valueField = "tempvisit" ;
AmCharts.makeChart("chartdiv", chartConfig1);

// build second chart
var chartConfig2 = AmCharts.cloneObject(configTemplate);
chartConfig2.dataProvider = chartData2;
chartConfig1.graphs[1].valueField = "tempvisit" ;
AmCharts.makeChart("chartdiv2", chartConfig2);