var options = {title: '<?php echo 'IP utilization per service in latest poll period. \nNote - Previous data represents total available addresses.\nRouter - ' . htmlspecialchars($_GET["router"]);?>',
diff: { newData: { widthFactor: 0.8 } },
hAxis: { title: 'Leased within Total per Service' },
chartArea: {'width': '70%', 'height': '70%'},
fontSize: 13,
fontName: 'Calibri'};
var diffData = colChartDiff.computeDiff(totalData, leasedData);
colChartDiff.draw(diffData, options);
google.visualization.events.addListener(colChartDiff, 'onmouseover', function (rowColumn) {
selectHandler();
});