Banded error tooltip

bandederror-tooltip.js

// Option snippet
var opts = {
  'highlighter' : {
    'tooltipContentEditor' : $.jqplot.Highlighter.errorTooltip
  }
};

// Custom tooltip formatter
$.jqplot.Highlighter.errorTooltip = function(str, seriesIndex, pointIndex, plot) {
  var series = plot.series[seriesIndex];
  if (typeof series.renderer.bandData !== 'undefined' && series.renderer.bandData.length) {
    lowValue = series.renderer.bandData[0][pointIndex],
    highValue = series.renderer.bandData[1][pointIndex];
    str += '<span class="max-err">Err max: '+ highValue[1] +'</span>';
    str += '<span class="min-err">Err min: '+ lowValue[1] +'</span>';
  }
  return str;
}