/*
 Highcharts JS v5.0.14 (2017-07-28)
 Accessibility module

 (c) 2010-2017 Highsoft AS
 Author: Oystein Moseng

 License: www.highcharts.com/license
*/
(function(r){"object"===typeof module&&module.exports?module.exports=r:r(Highcharts)})(function(r){(function(e){function r(a){return a.replace(/&/g,"\x26amp;").replace(/</g,"\x26lt;").replace(/>/g,"\x26gt;").replace(/"/g,"\x26quot;").replace(/'/g,"\x26#x27;").replace(/\//g,"\x26#x2F;")}function A(a){for(var c=a.childNodes.length;c--;)a.appendChild(a.childNodes[c])}function k(a){var c;a&&a.onclick&&l.createEvent&&(c=l.createEvent("Events"),c.initEvent("click",!0,!1),a.onclick(c))}var z=e.win,l=z.document,
g=e.each,B=e.erase,x=e.addEvent,C=e.removeEvent,y=e.fireEvent,D=e.dateFormat,w=e.merge,t={"default":["series","data point","data points"],line:["line","data point","data points"],spline:["line","data point","data points"],area:["line","data point","data points"],areaspline:["line","data point","data points"],pie:["pie","slice","slices"],column:["column series","column","columns"],bar:["bar series","bar","bars"],scatter:["scatter series","data point","data points"],boxplot:["boxplot series","box",
"boxes"],arearange:["arearange series","data point","data points"],areasplinerange:["areasplinerange series","data point","data points"],bubble:["bubble series","bubble","bubbles"],columnrange:["columnrange series","column","columns"],errorbar:["errorbar series","errorbar","errorbars"],funnel:["funnel","data point","data points"],pyramid:["pyramid","data point","data points"],waterfall:["waterfall series","column","columns"],map:["map","area","areas"],mapline:["line","data point","data points"],mappoint:["point series",
"data point","data points"],mapbubble:["bubble series","bubble","bubbles"]},E={boxplot:" Box plot charts are typically used to display groups of statistical data. Each data point in the chart can have up to 5 values: minimum, lower quartile, median, upper quartile and maximum. ",arearange:" Arearange charts are line charts displaying a range between a lower and higher value for each point. ",areasplinerange:" These charts are line charts displaying a range between a lower and higher value for each point. ",
bubble:" Bubble charts are scatter charts where each data point also has a size value. ",columnrange:" Columnrange charts are column charts displaying a range between a lower and higher value for each point. ",errorbar:" Errorbar series are used to display the variability of the data. ",funnel:" Funnel charts are used to display reduction of data in stages. ",pyramid:" Pyramid charts consist of a single pyramid with item heights corresponding to each point value. ",waterfall:" A waterfall chart is a column chart where each column contributes towards a total end value. "};
e.Series.prototype.commonKeys="name id category x value y".split(" ");e.Series.prototype.specialKeys="z open high q3 median q1 low close".split(" ");e.seriesTypes.pie&&(e.seriesTypes.pie.prototype.specialKeys=[]);e.setOptions({accessibility:{enabled:!0,pointDescriptionThreshold:30,keyboardNavigation:{enabled:!0,tabThroughPoints:!0}}});e.wrap(e.Series.prototype,"render",function(a){a.apply(this,Array.prototype.slice.call(arguments,1));this.chart.options.accessibility.enabled&&this.setA11yDescription()});
e.Series.prototype.setA11yDescription=function(){var a=this.chart.options.accessibility,c=this.points&&this.points.length&&this.points[0].graphic&&this.points[0].graphic.element,d=c&&c.parentNode||this.graph&&this.graph.element||this.group&&this.group.element;d&&(d.lastChild===c&&A(d),this.points&&(this.points.length<a.pointDescriptionThreshold||!1===a.pointDescriptionThreshold)&&g(this.points,function(b){b.graphic&&(b.graphic.element.setAttribute("role","img"),b.graphic.element.setAttribute("tabindex",
"-1"),b.graphic.element.setAttribute("aria-label",b.series.options.pointDescriptionFormatter&&b.series.options.pointDescriptionFormatter(b)||a.pointDescriptionFormatter&&a.pointDescriptionFormatter(b)||b.buildPointInfoString()))}),1<this.chart.series.length||a.describeSingleSeries)&&(d.setAttribute("role",this.options.exposeElementToA11y?"img":"region"),d.setAttribute("tabindex","-1"),d.setAttribute("aria-label",a.seriesDescriptionFormatter&&a.seriesDescriptionFormatter(this)||this.buildSeriesInfoString()))};
e.Series.prototype.buildSeriesInfoString=function(){var a=t[this.type]||t["default"],c=this.description||this.options.description;return(this.name?this.name+", ":"")+(1===this.chart.types.length?a[0]:"series")+" "+(this.index+1)+" of "+this.chart.series.length+(1===this.chart.types.length?" with ":". "+a[0]+" with ")+(this.points.length+" "+(1===this.points.length?a[1]:a[2]))+(c?". "+c:"")+(1<this.chart.yAxis.length&&this.yAxis?". Y axis, "+this.yAxis.getDescription():"")+(1<this.chart.xAxis.length&&
this.xAxis?". X axis, "+this.xAxis.getDescription():"")};e.Point.prototype.buildPointInfoString=function(){var a=this,c=a.series,d=c.chart.options.accessibility,b="",f=c.xAxis&&c.xAxis.isDatetimeAxis,d=f&&D(d.pointDateFormatter&&d.pointDateFormatter(a)||d.pointDateFormat||e.Tooltip.prototype.getXDateFormat(a,c.chart.options.tooltip,c.xAxis),a.x);e.find(c.specialKeys,function(b){return void 0!==a[b]})?(f&&(b=d),g(c.commonKeys.concat(c.specialKeys),function(c){void 0===a[c]||f&&"x"===c||(b+=(b?". ":
"")+c+", "+a[c])})):b=(this.name||d||this.category||this.id||"x, "+this.x)+", "+(void 0!==this.value?this.value:this.y);return this.index+1+". "+b+"."+(this.description?" "+this.description:"")};e.Axis.prototype.getDescription=function(){return this.userOptions&&this.userOptions.description||this.axisTitle&&this.axisTitle.textStr||this.options.id||this.categories&&"categories"||"values"};e.Axis.prototype.panStep=function(a,c){var d=c||3;c=this.getExtremes();var b=(c.max-c.min)/d*a,d=c.max+b,b=c.min+
b,f=d-b;0>a&&b<c.dataMin?(b=c.dataMin,d=b+f):0<a&&d>c.dataMax&&(d=c.dataMax,b=d-f);this.setExtremes(b,d)};e.wrap(e.Series.prototype,"init",function(a){a.apply(this,Array.prototype.slice.call(arguments,1));var c=this.chart;c.options.accessibility.enabled&&(c.types=c.types||[],0>c.types.indexOf(this.type)&&c.types.push(this.type),x(this,"remove",function(){var a=this,b=!1;g(c.series,function(f){f!==a&&0>c.types.indexOf(a.type)&&(b=!0)});b||B(c.types,a.type)}))});e.Chart.prototype.getTypeDescription=
function(){var a=this.types&&this.types[0],c=this.series[0]&&this.series[0].mapTitle;if(a){if("map"===a)return c?"Map of "+c:"Map of unspecified region.";if(1<this.types.length)return"Combination chart.";if(-1<["spline","area","areaspline"].indexOf(a))return"Line chart."}else return"Empty chart.";return a+" chart."+(E[a]||"")};e.Chart.prototype.getAxesDescription=function(){var a=this.xAxis.length,c=this.yAxis.length,d={},b;if(a)if(d.xAxis="The chart has "+a+(1<a?" X axes":" X axis")+" displaying ",
2>a)d.xAxis+=this.xAxis[0].getDescription()+".";else{for(b=0;b<a-1;++b)d.xAxis+=(b?", ":"")+this.xAxis[b].getDescription();d.xAxis+=" and "+this.xAxis[b].getDescription()+"."}if(c)if(d.yAxis="The chart has "+c+(1<c?" Y axes":" Y axis")+" displaying ",2>c)d.yAxis+=this.yAxis[0].getDescription()+".";else{for(b=0;b<c-1;++b)d.yAxis+=(b?", ":"")+this.yAxis[b].getDescription();d.yAxis+=" and "+this.yAxis[b].getDescription()+"."}return d};e.Chart.prototype.addAccessibleContextMenuAttribs=function(){var a=
this.exportDivElements;a&&(g(a,function(a){"DIV"!==a.tagName||a.children&&a.children.length||(a.setAttribute("role","menuitem"),a.setAttribute("tabindex",-1))}),a[0].parentNode.setAttribute("role","menu"),a[0].parentNode.setAttribute("aria-label","Chart export"))};e.Point.prototype.highlight=function(){var a=this.series.chart;this.graphic&&this.graphic.element.focus&&this.graphic.element.focus();this.isNull?a.tooltip&&a.tooltip.hide(0):(this.onMouseOver(),a.tooltip&&a.tooltip.refresh(a.tooltip.shared?
[this]:this));a.highlightedPoint=this;return this};e.Chart.prototype.highlightAdjacentPoint=function(a){var c=this.series,d=this.highlightedPoint,b=d&&d.index||0,f=d&&d.series.points,m=this.series&&this.series[this.series.length-1],e=m&&m.points&&m.points[m.points.length-1],m=d&&d.series.connectEnds&&b>f.length-3?2:1;if(!c[0]||!c[0].points)return!1;if(d){if(f[b]!==d)for(e=0;e<f.length;++e)if(f[e]===d){b=e;break}c=c[d.series.index+(a?1:-1)];b=f[b+(a?m:-1)]||c&&c.points[a?0:c.points.length-(c.connectEnds?
2:1)];if(void 0===b)return!1}else b=a?c[0].points[0]:e;return b.isNull&&this.options.accessibility.keyboardNavigation.skipNullPoints||b.series.options.skipKeyboardNavigation||!b.series.visible?(this.highlightedPoint=b,this.highlightAdjacentPoint(a)):b.highlight()};e.Chart.prototype.showExportMenu=function(){this.exportSVGElements&&this.exportSVGElements[0]&&(this.exportSVGElements[0].element.onclick(),this.highlightExportItem(0))};e.Chart.prototype.highlightExportItem=function(a){var c=this.exportDivElements&&
this.exportDivElements[a],d=this.exportDivElements&&this.exportDivElements[this.highlightedExportItem];if(c&&"DIV"===c.tagName&&(!c.children||!c.children.length)){c.focus&&c.focus();if(d&&d.onmouseout)d.onmouseout();if(c.onmouseover)c.onmouseover();this.highlightedExportItem=a;return!0}};e.Chart.prototype.highlightRangeSelectorButton=function(a){var c=this.rangeSelector.buttons;c[this.highlightedRangeSelectorItemIx]&&c[this.highlightedRangeSelectorItemIx].setState(this.oldRangeSelectorItemState||
0);this.highlightedRangeSelectorItemIx=a;return c[a]?(c[a].element.focus&&c[a].element.focus(),this.oldRangeSelectorItemState=c[a].state,c[a].setState(2),!0):!1};e.Chart.prototype.highlightLegendItem=function(a){var c=this.legend.allItems;c[this.highlightedLegendItemIx]&&y(c[this.highlightedLegendItemIx].legendGroup.element,"mouseout");this.highlightedLegendItemIx=a;return c[a]?(c[a].legendGroup.element.focus&&c[a].legendGroup.element.focus(),y(c[a].legendGroup.element,"mouseover"),!0):!1};e.Chart.prototype.hideExportMenu=
function(){var a=this.exportDivElements;if(a){g(a,function(a){y(a,"mouseleave")});if(a[this.highlightedExportItem]&&a[this.highlightedExportItem].onmouseout)a[this.highlightedExportItem].onmouseout();this.highlightedExportItem=0;this.renderTo.focus()}};e.Chart.prototype.addKeyboardNavEvents=function(){function a(b){this.id=b.id;this.keyCodeMap=b.keyCodeMap;this.move=b.move;this.validate=b.validate;this.init=b.init;this.terminate=b.terminate;this.transformTabs=!1!==b.transformTabs}function c(c,d,e){return new a(w({keyCodeMap:d,
move:function(a){this.terminate&&this.terminate(a);b.keyboardNavigationModuleIndex+=a;var c=b.keyboardNavigationModules[b.keyboardNavigationModuleIndex];if(c){if(c.validate&&!c.validate())return this.move(a);if(c.init)return c.init(a),!0}b.keyboardNavigationModuleIndex=0;b.slipNextTab=!0;return!1}},{id:c},e))}function d(a){a=a||z.event;var c=b.keyboardNavigationModules[b.keyboardNavigationModuleIndex];9===(a.which||a.keyCode)&&b.slipNextTab?b.slipNextTab=!1:(b.slipNextTab=!1,c&&c.run(a)&&a.preventDefault())}
var b=this;a.prototype={run:function(b){var a=this,c=b.which||b.keyCode,f=!1,c=this.transformTabs&&9===c?b.shiftKey?37:39:c;g(this.keyCodeMap,function(d){-1<d[0].indexOf(c)&&(f=!1===d[1].call(a,c,b)?!1:!0)});return f}};b.keyboardNavigationModules=[c("points",[[[37,39],function(a){if(!b.highlightAdjacentPoint(39===a))return this.move(39===a?1:-1)}],[[38,40],function(a){var c;if(b.highlightedPoint)if((c=b.series[b.highlightedPoint.series.index+(38===a?-1:1)])&&c.points[0])c.points[0].highlight();else return this.move(40===
a?1:-1)}],[[13,32],function(){b.highlightedPoint&&b.highlightedPoint.firePointEvent("click")}]],{init:function(){delete b.highlightedPoint},terminate:function(){b.tooltip&&b.tooltip.hide(0);delete b.highlightedPoint},transformTabs:b.options.accessibility.keyboardNavigation.tabThroughPoints}),c("exporting",[[[37,38],function(){for(var a=b.highlightedExportItem||0,c=!0;a--;)if(b.highlightExportItem(a)){c=!1;break}if(c)return b.hideExportMenu(),this.move(-1)}],[[39,40],function(){for(var a=!0,c=(b.highlightedExportItem||
0)+1;c<b.exportDivElements.length;++c)if(b.highlightExportItem(c)){a=!1;break}if(a)return b.hideExportMenu(),this.move(1)}],[[13,32],function(){k(b.exportDivElements[b.highlightedExportItem])}]],{validate:function(){return b.exportChart&&!(b.options.exporting&&!1===b.options.exporting.enabled)},init:function(a){b.highlightedPoint=null;b.showExportMenu();if(0>a&&b.exportDivElements)for(a=b.exportDivElements.length;-1<a&&!b.highlightExportItem(a);--a);}}),c("mapZoom",[[[38,40,37,39],function(a){b[38===
a||40===a?"yAxis":"xAxis"][0].panStep(39>a?-1:1)}],[[9],function(a,c){b.mapNavButtons[b.focusedMapNavButtonIx].setState(0);if(c.shiftKey&&!b.focusedMapNavButtonIx||!c.shiftKey&&b.focusedMapNavButtonIx)return b.mapZoom(),this.move(c.shiftKey?-1:1);b.focusedMapNavButtonIx+=c.shiftKey?-1:1;a=b.mapNavButtons[b.focusedMapNavButtonIx];a.element.focus&&a.element.focus();a.setState(2)}],[[13,32],function(){k(b.mapNavButtons[b.focusedMapNavButtonIx].element)}]],{validate:function(){return b.mapZoom&&b.mapNavButtons&&
2===b.mapNavButtons.length},transformTabs:!1,init:function(a){var c=b.mapNavButtons[0],d=b.mapNavButtons[1],c=0<a?c:d;g(b.mapNavButtons,function(b,a){b.element.setAttribute("tabindex",-1);b.element.setAttribute("role","button");b.element.setAttribute("aria-label","Zoom "+(a?"out":"")+"chart")});c.element.focus&&c.element.focus();c.setState(2);b.focusedMapNavButtonIx=0<a?0:1}}),c("rangeSelector",[[[37,39,38,40],function(a){a=37===a||38===a?-1:1;if(!b.highlightRangeSelectorButton(b.highlightedRangeSelectorItemIx+
a))return this.move(a)}],[[13,32],function(){3!==b.oldRangeSelectorItemState&&k(b.rangeSelector.buttons[b.highlightedRangeSelectorItemIx].element)}]],{validate:function(){return b.rangeSelector&&b.rangeSelector.buttons&&b.rangeSelector.buttons.length},init:function(a){g(b.rangeSelector.buttons,function(a){a.element.setAttribute("tabindex","-1");a.element.setAttribute("role","button");a.element.setAttribute("aria-label","Select range "+(a.text&&a.text.textStr))});b.highlightRangeSelectorButton(0<a?
0:b.rangeSelector.buttons.length-1)}}),c("rangeSelectorInput",[[[9,38,40],function(a,c){a=9===a&&c.shiftKey||38===a?-1:1;c=b.highlightedInputRangeIx+=a;if(1<c||0>c)return this.move(a);b.rangeSelector[c?"maxInput":"minInput"].focus()}]],{validate:function(){return b.rangeSelector&&b.rangeSelector.inputGroup&&"hidden"!==b.rangeSelector.inputGroup.element.getAttribute("visibility")&&!1!==b.options.rangeSelector.inputEnabled&&b.rangeSelector.minInput&&b.rangeSelector.maxInput},transformTabs:!1,init:function(a){b.highlightedInputRangeIx=
0<a?0:1;b.rangeSelector[b.highlightedInputRangeIx?"maxInput":"minInput"].focus()}}),c("legend",[[[37,39,38,40],function(a){a=37===a||38===a?-1:1;if(!b.highlightLegendItem(b.highlightedLegendItemIx+a))return this.move(a)}],[[13,32],function(){k(b.legend.allItems[b.highlightedLegendItemIx].legendItem.element.parentNode)}]],{validate:function(){return b.legend&&b.legend.allItems&&!(b.colorAxis&&b.colorAxis.length)&&!1!==(b.options.legend&&b.options.legend.keyboardNavigation&&b.options.legend.keyboardNavigation.enabled)},
init:function(a){g(b.legend.allItems,function(a){a.legendGroup.element.setAttribute("tabindex","-1");a.legendGroup.element.setAttribute("role","button");a.legendGroup.element.setAttribute("aria-label","Toggle visibility of series "+a.name)});b.highlightLegendItem(0<a?0:b.legend.allItems.length-1)}})];b.keyboardNavigationModuleIndex=0;b.container.hasAttribute&&!b.container.hasAttribute("tabIndex")&&b.container.setAttribute("tabindex","0");x(b.renderTo,"keydown",d);x(b,"destroy",function(){C(b.renderTo,
"keydown",d)})};e.Chart.prototype.addScreenReaderRegion=function(a,c){var d=this,b=d.series,e=d.options,g=e.accessibility,n=d.screenReaderRegion=l.createElement("div"),k=l.createElement("h4"),p=l.createElement("a"),v=l.createElement("h4"),u={position:"absolute",left:"-9999px",top:"auto",width:"1px",height:"1px",overflow:"hidden"},h=d.types||[],h=(1===h.length&&"pie"===h[0]||"map"===h[0])&&{}||d.getAxesDescription(),q=b[0]&&t[b[0].type]||t["default"];n.setAttribute("id",a);n.setAttribute("role","region");
n.setAttribute("aria-label","Chart screen reader information.");n.innerHTML=g.screenReaderSectionFormatter&&g.screenReaderSectionFormatter(d)||"\x3cdiv\x3eUse regions/landmarks to skip ahead to chart"+(1<b.length?" and navigate between data series":"")+".\x3c/div\x3e\x3ch3\x3e"+(e.title.text?r(e.title.text):"Chart")+(e.subtitle&&e.subtitle.text?". "+r(e.subtitle.text):"")+"\x3c/h3\x3e\x3ch4\x3eLong description.\x3c/h4\x3e\x3cdiv\x3e"+(e.chart.description||"No description available.")+"\x3c/div\x3e\x3ch4\x3eStructure.\x3c/h4\x3e\x3cdiv\x3eChart type: "+
(e.chart.typeDescription||d.getTypeDescription())+"\x3c/div\x3e"+(1===b.length?"\x3cdiv\x3e"+q[0]+" with "+b[0].points.length+" "+(1===b[0].points.length?q[1]:q[2])+".\x3c/div\x3e":"")+(h.xAxis?"\x3cdiv\x3e"+h.xAxis+"\x3c/div\x3e":"")+(h.yAxis?"\x3cdiv\x3e"+h.yAxis+"\x3c/div\x3e":"");d.getCSV&&(p.innerHTML="View as data table.",p.href="#"+c,p.setAttribute("tabindex","-1"),p.onclick=g.onTableAnchorClick||function(){d.viewData();l.getElementById(c).focus()},k.appendChild(p),n.appendChild(k));v.innerHTML=
"Chart graphic.";d.renderTo.insertBefore(v,d.renderTo.firstChild);d.renderTo.insertBefore(n,d.renderTo.firstChild);w(!0,v.style,u);w(!0,n.style,u)};e.Chart.prototype.callbacks.push(function(a){var c=a.options,d=c.accessibility;if(d.enabled){var b=l.createElementNS("http://www.w3.org/2000/svg","title"),f=l.createElementNS("http://www.w3.org/2000/svg","g"),m=a.container.getElementsByTagName("desc")[0],n=a.container.getElementsByTagName("text"),k="highcharts-title-"+a.index,p="highcharts-data-table-"+
a.index,v="highcharts-information-region-"+a.index,u=c.title.text||"Chart",h=c.exporting&&c.exporting.csv&&c.exporting.csv.columnHeaderFormatter,q=[];b.textContent=r(u);b.id=k;m.parentNode.insertBefore(b,m);a.renderTo.setAttribute("role","region");a.renderTo.setAttribute("aria-label","Interactive chart. "+u+". Use up and down arrows to navigate with most screen readers.");if(a.exportSVGElements&&a.exportSVGElements[0]&&a.exportSVGElements[0].element){var t=a.exportSVGElements[0].element.onclick,b=
a.exportSVGElements[0].element.parentNode;a.exportSVGElements[0].element.onclick=function(){t.apply(this,Array.prototype.slice.call(arguments));a.addAccessibleContextMenuAttribs();a.highlightExportItem(0)};a.exportSVGElements[0].element.setAttribute("role","button");a.exportSVGElements[0].element.setAttribute("aria-label","View export menu");f.appendChild(a.exportSVGElements[0].element);f.setAttribute("role","region");f.setAttribute("aria-label","Chart export menu");b.appendChild(f)}a.rangeSelector&&
g(["minInput","maxInput"],function(b,c){a.rangeSelector[b]&&(a.rangeSelector[b].setAttribute("tabindex","-1"),a.rangeSelector[b].setAttribute("role","textbox"),a.rangeSelector[b].setAttribute("aria-label","Select "+(c?"end":"start")+" date."))});g(n,function(a){a.setAttribute("aria-hidden","true")});a.addScreenReaderRegion(v,p);d.keyboardNavigation.enabled&&a.addKeyboardNavEvents();w(!0,c.exporting,{csv:{columnHeaderFormatter:function(a,b,c){if(!a)return"Category";if(a instanceof e.Axis)return a.options.title&&
a.options.title.text||(a.isDatetimeAxis?"DateTime":"Category");var d=q[q.length-1];1<c&&(d&&d.text)!==a.name&&q.push({text:a.name,span:c});return h?h.call(this,a,b,c):1<c?b:a.name}}});e.wrap(a,"getTable",function(a){return a.apply(this,Array.prototype.slice.call(arguments,1)).replace("\x3ctable\x3e",'\x3ctable id\x3d"'+p+'" summary\x3d"Table representation of chart"\x3e\x3ccaption\x3e'+u+"\x3c/caption\x3e")});e.wrap(a,"viewData",function(a){if(!this.dataTableDiv){a.apply(this,Array.prototype.slice.call(arguments,
1));var b=l.getElementById(p),c=b.getElementsByTagName("thead")[0],d=b.getElementsByTagName("tbody")[0],e=c.firstChild.children,f="\x3ctr\x3e\x3ctd\x3e\x3c/td\x3e",h,k;b.setAttribute("tabindex","-1");g(d.children,function(a){h=a.firstChild;k=l.createElement("th");k.setAttribute("scope","row");k.innerHTML=h.innerHTML;h.parentNode.replaceChild(k,h)});g(e,function(a){"TH"===a.tagName&&a.setAttribute("scope","col")});q.length&&(g(q,function(a){f+='\x3cth scope\x3d"col" colspan\x3d"'+a.span+'"\x3e'+a.text+
"\x3c/th\x3e"}),c.insertAdjacentHTML("afterbegin",f))}})}})})(r)});
