Toggle categoryAxis label align

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>
<button id="toggler">Toggle categoryAxis label align</button>
<div id="chartdiv"></div>

CSS

body {
    font-size: 8px;
}
#chartdiv {
	width	: 100%;
	height	: 100px;
}

JavaScript

function toggleAlign(chart) {
	for ( i in chart.categoryAxis.allLabels ) {
		var label = chart.categoryAxis.allLabels[i].node;
		var dad = label.parentNode;

		var labelT	= label.getAttribute('transform').replace(/\w+/,'').slice(1,-1).split(',');
		var dadT	= dad.getAttribute('transform').replace(/\w+/,'').slice(1,-1).split(',');
		var x		= Number(dadT[0]*-1) - Number(labelT[0]) + label.offsetWidth;
		var y		= Number(labelT[1]);

		label.setAttribute('transform','translate('+ String(x) +','+ String(y) +')');
	}
}
document.getElementById('toggler').onclick = function() {
    toggleAlign(chart);
}
var chart = AmCharts.makeChart("chartdiv", {
	"theme": "none",
    "type": "serial",
    "dataProvider": [{
        "name": "John",
        "startTime": 0,
        "endTime": 2,
        "color": "#FF0F00"   
    }],
    "valueAxes": [{
        "unit": ":00",
        "axisAlpha": 0,
        "gridAlpha": 0.1
    }],
    "startDuration": 1,
    "graphs": [{
        "balloonText": "<b>[[category]]</b><br>starts at [[startTime]]:00<br>ends at [[endTime]]:00",
        "colorField": "color",
        "fillAlphas": 0.8,
        "lineAlpha": 0,
        "openField": "startTime",
        "type": "column",
        "valueField": "endTime"
    }],
    "rotate": true,
    "columnWidth": 1,
    "categoryField": "name",
    "categoryAxis": {
        "gridPosition": "start",
        "axisAlpha": 0,
        "gridAlpha": 0.1,
        "position": "left"
    },
	"exportConfig":{
      "menuTop":"20px",
      "menuRight":"20px",
      "menuItems": [{
      "icon": "http://www.amcharts.com/lib/3/images/export.png",
      "format": 'png'	  
      }]  
    }
});