Horizontal funnel chart with regular serial chart

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>

CSS

#chartdiv {
	width	: 100%;
	height	: 500px;
}

JavaScript

var chart = AmCharts.makeChart("chartdiv", {
    "type": "serial",
    "theme": "none",
    "dataProvider": [{
        "category": "Sessions",
        "value": 896079,
        "value2": -896079,
        "color": "#a8c81f"
    },{
        "category": "Clicks",
        "value": 670080,
        "value2": -670080,
        "color": "#118acb"
    }, {
        "category": "Add to cart",
        "value": 266712,
        "value2": -266712,
        "color": "#40b4a6"
    }, {
        "category": "Purchase",
        "value": 136498,
        "value2": -136498,
        "color": "#008d36"
    }, {
        "category": "Purchase",
        "value": 50000,
        "value2": -50000,
        "color": "#008d36"
    }],
    "valueAxes": [{
        "axisAlpha": 0,
        "labelsEnabled": false,
        "gridAlpha": 0
    }],
    "graphs": [{
        "id": "fromGraph",
        "lineAlpha": 0,
        "showBalloon": false,
        "valueField": "value2",
        "fillAlphas": 0
    }, {
        "fillAlphas": 1,
        "fillToGraph": "fromGraph",
        "lineAlpha": 0,
        "lineColorField": "color",
        "fillColorsField": "color",
        "showBalloon": false,
        "valueField": "value"
    }],
    "categoryField": "category",
    "categoryAxis": {
        "startOnAxis": true,
        "axisAlpha": 0.1,
        "gridPosition": "left",
        "gridAlpha": 0.1,
        "tickLength": 20,
        "tickPosition": "start",
        "showLastLabel": false
    }
});