stack total in shared tooltip

by jlbriggs

HTML

<script src="http://code.highcharts.com/highcharts.js"></script>
<script src="http://code.highcharts.com/highcharts-more.js"></script>
<div id="container" style="width:350px;height:450px;margin:1em;"></div>

JavaScript

$('#container').highcharts({
		chart: {
			type:'bar'
		},
        title: { text: '' },
        legend: {
			align:'right',
			layout:'vertical',
			verticalAlign:'top',
			x:15,
			floating:true,
			borderWidth:0,
			shadow:false,
			backgroundColor:'transparent',
            itemStyle: {
                fontWeight:'normal'
            }
		},
		tooltip:{
			borderRadius	: 2,
		    borderWidth		: 1,
		    borderColor		: '#999',
			shadow			: false,
		    shared			: true,
		    useHTML			: true,
			yDecimals		: 0,
            valueDecimals	: 0,
            headerFormat	: 
                 '<table class="tip"><caption>Group {point.key}</caption>'
                +'<tbody>', 
            pointFormat		: 
                  '<tr><th style="color: {series.color}">{series.name}: </th>'
            	+ '<td style="text-align: right">${point.y}</td></tr>',
            footerFormat	: 
                 '<tr><th>Total: </th>'
        		+'<td style="text-align:right"><b>${point.total}</b></td></tr>'
            	+'</tbody></table>'
        },
		plotOptions: {
			series: {
				stacking:'normal',
				minPointLength:2
			}
		},
		xAxis: {
            lineWidth:.5,
            lineColor:'#333',
            tickWidth:.5,
            tickLength:3,
            tickColor:'#333',
			categories:["01","02","03","04","05","07","09","17","18","19"],
			title: {
                rotation:0,
                text:'Group',
				margin:30,
				style: {
                    color:'#000',
                    fontSize:'12px'
				}
			},
			labels: {
				style: {
                    color:'#000',
					fontSize:'10px',
					fontWeight:'bold'
				}
			}
		},
		yAxis: {
            lineWidth:.5,
            lineColor:'#333',
            tickWidth:.5,
            tickLength:3,
            tickColor:'#333',
			gridLineWidth:.5,
            gridLineColor:'#eee',
			title: {
				text:'Dollars',
				style: {
                    color:'#000',
					fontSize:'12px'
				}
			},
			labels:...