// source --> https://2020exhibits.com/wp-content/themes/custom/js/css3-mediaqueries.min.js?ver=3dfdb9711e735ea19cad9b89c3306899 
if(typeof Object.create!=='function'){Object.create=function(o){function F(){}
F.prototype=o;return new F()}}
var ua={toString:function(){return navigator.userAgent},test:function(s){return this.toString().toLowerCase().indexOf(s.toLowerCase())>-1}};ua.version=(ua.toString().toLowerCase().match(/[\s\S]+(?:rv|it|ra|ie)[\/: ]([\d.]+)/)||[])[1];ua.webkit=ua.test('webkit');ua.gecko=ua.test('gecko')&&!ua.webkit;ua.opera=ua.test('opera');ua.ie=ua.test('msie')&&!ua.opera;ua.ie6=ua.ie&&document.compatMode&&typeof document.documentElement.style.maxHeight==='undefined';ua.ie7=ua.ie&&document.documentElement&&typeof document.documentElement.style.maxHeight!=='undefined'&&typeof XDomainRequest==='undefined';ua.ie8=ua.ie&&typeof XDomainRequest!=='undefined';var domReady=function(){var fns=[];var init=function(){if(!arguments.callee.done){arguments.callee.done=!0;for(var i=0;i<fns.length;i++){fns[i]()}}};if(document.addEventListener){document.addEventListener('DOMContentLoaded',init,!1)}
if(ua.ie){(function(){try{document.documentElement.doScroll('left');document.body.length}
catch(e){setTimeout(arguments.callee,50);return}
init()})();document.onreadystatechange=function(){if(document.readyState==='complete'){document.onreadystatechange=null;init()}}}
if(ua.webkit&&document.readyState){(function(){if(document.readyState!=='loading'){init()}
else{setTimeout(arguments.callee,10)}})()}
window.onload=init;return function(fn){if(typeof fn==='function'){if(init.done){fn()}else{fns[fns.length]=fn}}
return fn}}();var cssHelper=function(){var regExp={BLOCKS:/[^\s{;][^{;]*\{(?:[^{}]*\{[^{}]*\}[^{}]*|[^{}]*)*\}/g,BLOCKS_INSIDE:/[^\s{][^{]*\{[^{}]*\}/g,DECLARATIONS:/[a-zA-Z\-]+[^;]*:[^;]+;/g,RELATIVE_URLS:/url\(['"]?([^\/\)'"][^:\)'"]+)['"]?\)/g,REDUNDANT_COMPONENTS:/(?:\/\*([^*\\\\]|\*(?!\/))+\*\/|@import[^;]+;|@-moz-document\s*url-prefix\(\)\s*{(([^{}])+{([^{}])+}([^{}])+)+})/g,REDUNDANT_WHITESPACE:/\s*(,|:|;|\{|\})\s*/g,WHITESPACE_IN_PARENTHESES:/\(\s*(\S*)\s*\)/g,MORE_WHITESPACE:/\s{2,}/g,FINAL_SEMICOLONS:/;\}/g,NOT_WHITESPACE:/\S+/g};var parsed,parsing=!1;var waiting=[];var wait=function(fn){if(typeof fn==='function'){waiting[waiting.length]=fn}};var ready=function(){for(var i=0;i<waiting.length;i++){waiting[i](parsed)}};var events={};var broadcast=function(n,v){if(events[n]){var listeners=events[n].listeners;if(listeners){for(var i=0;i<listeners.length;i++){listeners[i](v)}}}};var requestText=function(url,fnSuccess,fnFailure){if(ua.ie&&!window.XMLHttpRequest){window.XMLHttpRequest=function(){return new ActiveXObject('Microsoft.XMLHTTP')}}
if(!XMLHttpRequest){return''}
var r=new XMLHttpRequest();try{r.open('get',url,!0);r.setRequestHeader('X_REQUESTED_WITH','XMLHttpRequest')}
catch(e){fnFailure();return}
var done=!1;setTimeout(function(){done=!0},5000);document.documentElement.style.cursor='progress';r.onreadystatechange=function(){if(r.readyState===4&&!done){if(!r.status&&location.protocol==='file:'||(r.status>=200&&r.status<300)||r.status===304||navigator.userAgent.indexOf('Safari')>-1&&typeof r.status==='undefined'){fnSuccess(r.responseText)}
else{fnFailure()}
document.documentElement.style.cursor='';r=null}};r.send('')};var sanitize=function(text){text=text.replace(regExp.REDUNDANT_COMPONENTS,'');text=text.replace(regExp.REDUNDANT_WHITESPACE,'$1');text=text.replace(regExp.WHITESPACE_IN_PARENTHESES,'($1)');text=text.replace(regExp.MORE_WHITESPACE,' ');text=text.replace(regExp.FINAL_SEMICOLONS,'}');return text};var objects={stylesheet:function(el){var o={};var amqs=[],mqls=[],rs=[],rsw=[];var s=el.cssHelperText;var attr=el.getAttribute('media');if(attr){var qts=attr.toLowerCase().split(',')}
else{var qts=['all']}
for(var i=0;i<qts.length;i++){amqs[amqs.length]=objects.mediaQuery(qts[i],o)}
var blocks=s.match(regExp.BLOCKS);if(blocks!==null){for(var i=0;i<blocks.length;i++){if(blocks[i].substring(0,7)==='@media '){var mql=objects.mediaQueryList(blocks[i],o);rs=rs.concat(mql.getRules());mqls[mqls.length]=mql}
else{rs[rs.length]=rsw[rsw.length]=objects.rule(blocks[i],o,null)}}}
o.element=el;o.getCssText=function(){return s};o.getAttrMediaQueries=function(){return amqs};o.getMediaQueryLists=function(){return mqls};o.getRules=function(){return rs};o.getRulesWithoutMQ=function(){return rsw};return o},mediaQueryList:function(s,stsh){var o={};var idx=s.indexOf('{');var lt=s.substring(0,idx);s=s.substring(idx+1,s.length-1);var mqs=[],rs=[];var qts=lt.toLowerCase().substring(7).split(',');for(var i=0;i<qts.length;i++){mqs[mqs.length]=objects.mediaQuery(qts[i],o)}
var rts=s.match(regExp.BLOCKS_INSIDE);if(rts!==null){for(i=0;i<rts.length;i++){rs[rs.length]=objects.rule(rts[i],stsh,o)}}
o.type='mediaQueryList';o.getMediaQueries=function(){return mqs};o.getRules=function(){return rs};o.getListText=function(){return lt};o.getCssText=function(){return s};return o},mediaQuery:function(s,listOrSheet){s=s||'';var mql,stsh;if(listOrSheet.type==='mediaQueryList'){mql=listOrSheet}
else{stsh=listOrSheet}
var not=!1,type;var expr=[];var valid=!0;var tokens=s.match(regExp.NOT_WHITESPACE);for(var i=0;i<tokens.length;i++){var token=tokens[i];if(!type&&(token==='not'||token==='only')){if(token==='not'){not=!0}}
else if(!type){type=token}
else if(token.charAt(0)==='('){var pair=token.substring(1,token.length-1).split(':');expr[expr.length]={mediaFeature:pair[0],value:pair[1]||null}}}
return{getQueryText:function(){return s},getAttrStyleSheet:function(){return stsh||null},getList:function(){return mql||null},getValid:function(){return valid},getNot:function(){return not},getMediaType:function(){return type},getExpressions:function(){return expr}}},rule:function(s,stsh,mql){var o={};var idx=s.indexOf('{');var st=s.substring(0,idx);var ss=st.split(',');var ds=[];var dts=s.substring(idx+1,s.length-1).split(';');for(var i=0;i<dts.length;i++){ds[ds.length]=objects.declaration(dts[i],o)}
o.getStylesheet=function(){return stsh||null};o.getMediaQueryList=function(){return mql||null};o.getSelectors=function(){return ss};o.getSelectorText=function(){return st};o.getDeclarations=function(){return ds};o.getPropertyValue=function(n){for(var i=0;i<ds.length;i++){if(ds[i].getProperty()===n){return ds[i].getValue()}}
return null};return o},declaration:function(s,r){var idx=s.indexOf(':');var p=s.substring(0,idx);var v=s.substring(idx+1);return{getRule:function(){return r||null},getProperty:function(){return p},getValue:function(){return v}}}};var parseText=function(el){if(typeof el.cssHelperText!=='string'){return}
var o={stylesheet:null,mediaQueryLists:[],rules:[],selectors:{},declarations:[],properties:{}};var stsh=o.stylesheet=objects.stylesheet(el);var mqls=o.mediaQueryLists=stsh.getMediaQueryLists();var ors=o.rules=stsh.getRules();var oss=o.selectors;var collectSelectors=function(r){var ss=r.getSelectors();for(var i=0;i<ss.length;i++){var n=ss[i];if(!oss[n]){oss[n]=[]}
oss[n][oss[n].length]=r}};for(i=0;i<ors.length;i++){collectSelectors(ors[i])}
var ods=o.declarations;for(i=0;i<ors.length;i++){ods=o.declarations=ods.concat(ors[i].getDeclarations())}
var ops=o.properties;for(i=0;i<ods.length;i++){var n=ods[i].getProperty();if(!ops[n]){ops[n]=[]}
ops[n][ops[n].length]=ods[i]}
el.cssHelperParsed=o;parsed[parsed.length]=el;return o};var parseEmbedded=function(el,s){return;el.cssHelperText=sanitize(s||el.innerHTML);return parseText(el)};var parse=function(){parsing=!0;parsed=[];var linked=[];var finish=function(){for(var i=0;i<linked.length;i++){parseText(linked[i])}
var styles=document.getElementsByTagName('style');for(i=0;i<styles.length;i++){parseEmbedded(styles[i])}
parsing=!1;ready()};var links=document.getElementsByTagName('link');for(var i=0;i<links.length;i++){var link=links[i];if(link.getAttribute('rel').indexOf('style')>-1&&link.href&&link.href.length!==0&&!link.disabled){linked[linked.length]=link}}
if(linked.length>0){var c=0;var checkForFinish=function(){c++;if(c===linked.length){finish()}};var processLink=function(link){var href=link.href;requestText(href,function(text){text=sanitize(text).replace(regExp.RELATIVE_URLS,'url('+href.substring(0,href.lastIndexOf('/'))+'/$1)');link.cssHelperText=text;checkForFinish()},checkForFinish)};for(i=0;i<linked.length;i++){processLink(linked[i])}}
else{finish()}};var types={stylesheets:'array',mediaQueryLists:'array',rules:'array',selectors:'object',declarations:'array',properties:'object'};var collections={stylesheets:null,mediaQueryLists:null,rules:null,selectors:null,declarations:null,properties:null};var addToCollection=function(name,v){if(collections[name]!==null){if(types[name]==='array'){return(collections[name]=collections[name].concat(v))}
else{var c=collections[name];for(var n in v){if(v.hasOwnProperty(n)){if(!c[n]){c[n]=v[n]}
else{c[n]=c[n].concat(v[n])}}}
return c}}};var collect=function(name){collections[name]=(types[name]==='array')?[]:{};for(var i=0;i<parsed.length;i++){var pname=name==='stylesheets'?'stylesheet':name;addToCollection(name,parsed[i].cssHelperParsed[pname])}
return collections[name]};var getViewportSize=function(d){if(typeof window.innerWidth!='undefined'){return window['inner'+d]}
else if(typeof document.documentElement!=='undefined'&&typeof document.documentElement.clientWidth!=='undefined'&&document.documentElement.clientWidth!=0){return document.documentElement['client'+d]}};return{addStyle:function(s,mediaTypes,process){var el;var styleElId='css-mediaqueries-js';var styleMedia='';var styleEl=document.getElementById(styleElId);if(mediaTypes&&mediaTypes.length>0){styleMedia=mediaTypes.join(',');styleElId+=styleMedia}
if(null!==styleEl){el=styleEl}
else{el=document.createElement('style');el.setAttribute('type','text/css');el.setAttribute('id',styleElId);el.setAttribute('media',styleMedia);document.getElementsByTagName('head')[0].appendChild(el)}
if(el.styleSheet){el.styleSheet.cssText+=s}
else{el.appendChild(document.createTextNode(s))}
el.addedWithCssHelper=!0;if(typeof process==='undefined'||process===!0){cssHelper.parsed(function(parsed){var o=parseEmbedded(el,s);for(var n in o){if(o.hasOwnProperty(n)){addToCollection(n,o[n])}}
broadcast('newStyleParsed',el)})}
else{el.parsingDisallowed=!0}
return el},removeStyle:function(el){if(el.parentNode)
return el.parentNode.removeChild(el)},parsed:function(fn){if(parsing){wait(fn)}
else{if(typeof parsed!=='undefined'){if(typeof fn==='function'){fn(parsed)}}
else{wait(fn);parse()}}},stylesheets:function(fn){cssHelper.parsed(function(parsed){fn(collections.stylesheets||collect('stylesheets'))})},mediaQueryLists:function(fn){cssHelper.parsed(function(parsed){fn(collections.mediaQueryLists||collect('mediaQueryLists'))})},rules:function(fn){cssHelper.parsed(function(parsed){fn(collections.rules||collect('rules'))})},selectors:function(fn){cssHelper.parsed(function(parsed){fn(collections.selectors||collect('selectors'))})},declarations:function(fn){cssHelper.parsed(function(parsed){fn(collections.declarations||collect('declarations'))})},properties:function(fn){cssHelper.parsed(function(parsed){fn(collections.properties||collect('properties'))})},broadcast:broadcast,addListener:function(n,fn){if(typeof fn==='function'){if(!events[n]){events[n]={listeners:[]}}
events[n].listeners[events[n].listeners.length]=fn}},removeListener:function(n,fn){if(typeof fn==='function'&&events[n]){var ls=events[n].listeners;for(var i=0;i<ls.length;i++){if(ls[i]===fn){ls.splice(i,1);i-=1}}}},getViewportWidth:function(){return getViewportSize('Width')},getViewportHeight:function(){return getViewportSize('Height')}}}();domReady(function enableCssMediaQueries(){var meter;var regExp={LENGTH_UNIT:/[0-9]+(em|ex|px|in|cm|mm|pt|pc)$/,RESOLUTION_UNIT:/[0-9]+(dpi|dpcm)$/,ASPECT_RATIO:/^[0-9]+\/[0-9]+$/,ABSOLUTE_VALUE:/^[0-9]*(\.[0-9]+)*$/};var styles=[];var nativeSupport=function(){var id='css3-mediaqueries-test';var el=document.createElement('div');el.id=id;var style=cssHelper.addStyle('@media all and (width) { #'+id+' { width: 1px !important; } }',[],!1);document.body.appendChild(el);var ret=el.offsetWidth===1;style.parentNode.removeChild(style);el.parentNode.removeChild(el);nativeSupport=function(){return ret};return ret};var createMeter=function(){meter=document.createElement('div');meter.style.cssText='position:absolute;top:-9999em;left:-9999em;'+'margin:0;border:none;padding:0;width:1em;font-size:1em;';document.body.appendChild(meter);if(meter.offsetWidth!==16){meter.style.fontSize=16/meter.offsetWidth+'em'}
meter.style.width=''};var measure=function(value){meter.style.width=value;var amount=meter.offsetWidth;meter.style.width='';return amount};var testMediaFeature=function(feature,value){var l=feature.length;var min=(feature.substring(0,4)==='min-');var max=(!min&&feature.substring(0,4)==='max-');if(value!==null){var valueType;var amount;if(regExp.LENGTH_UNIT.exec(value)){valueType='length';amount=measure(value)}
else if(regExp.RESOLUTION_UNIT.exec(value)){valueType='resolution';amount=parseInt(value,10);var unit=value.substring((amount+'').length)}
else if(regExp.ASPECT_RATIO.exec(value)){valueType='aspect-ratio';amount=value.split('/')}
else if(regExp.ABSOLUTE_VALUE){valueType='absolute';amount=value}
else{valueType='unknown'}}
var width,height;if('device-width'===feature.substring(l-12,l)){width=screen.width;if(value!==null){if(valueType==='length'){return((min&&width>=amount)||(max&&width<amount)||(!min&&!max&&width===amount))}
else{return!1}}
else{return width>0}}
else if('device-height'===feature.substring(l-13,l)){height=screen.height;if(value!==null){if(valueType==='length'){return((min&&height>=amount)||(max&&height<amount)||(!min&&!max&&height===amount))}
else{return!1}}
else{return height>0}}
else if('width'===feature.substring(l-5,l)){width=document.documentElement.clientWidth||document.body.clientWidth;if(value!==null){if(valueType==='length'){return((min&&width>=amount)||(max&&width<amount)||(!min&&!max&&width===amount))}
else{return!1}}
else{return width>0}}
else if('height'===feature.substring(l-6,l)){height=document.documentElement.clientHeight||document.body.clientHeight;if(value!==null){if(valueType==='length'){return((min&&height>=amount)||(max&&height<amount)||(!min&&!max&&height===amount))}
else{return!1}}
else{return height>0}}
else if('orientation'===feature.substring(l-11,l)){width=document.documentElement.clientWidth||document.body.clientWidth;height=document.documentElement.clientHeight||document.body.clientHeight;if(valueType==='absolute'){return(amount==='portrait')?(width<=height):(width>height)}
else{return!1}}
else if('aspect-ratio'===feature.substring(l-12,l)){width=document.documentElement.clientWidth||document.body.clientWidth;height=document.documentElement.clientHeight||document.body.clientHeight;var curRatio=width/height;var ratio=amount[1]/amount[0];if(valueType==='aspect-ratio'){return((min&&curRatio>=ratio)||(max&&curRatio<ratio)||(!min&&!max&&curRatio===ratio))}
else{return!1}}
else if('device-aspect-ratio'===feature.substring(l-19,l)){return valueType==='aspect-ratio'&&screen.width*amount[1]===screen.height*amount[0]}
else if('color-index'===feature.substring(l-11,l)){var colors=Math.pow(2,screen.colorDepth);if(value!==null){if(valueType==='absolute'){return((min&&colors>=amount)||(max&&colors<amount)||(!min&&!max&&colors===amount))}
else{return!1}}
else{return colors>0}}
else if('color'===feature.substring(l-5,l)){var color=screen.colorDepth;if(value!==null){if(valueType==='absolute'){return((min&&color>=amount)||(max&&color<amount)||(!min&&!max&&color===amount))}
else{return!1}}
else{return color>0}}
else if('resolution'===feature.substring(l-10,l)){var res;if(unit==='dpcm'){res=measure('1cm')}
else{res=measure('1in')}
if(value!==null){if(valueType==='resolution'){return((min&&res>=amount)||(max&&res<amount)||(!min&&!max&&res===amount))}
else{return!1}}
else{return res>0}}
else{return!1}};var testMediaQuery=function(mq){var test=mq.getValid();var expressions=mq.getExpressions();var l=expressions.length;if(l>0){for(var i=0;i<l&&test;i++){test=testMediaFeature(expressions[i].mediaFeature,expressions[i].value)}
var not=mq.getNot();return(test&&!not||not&&!test)}
return test};var testMediaQueryList=function(mql,ts){var mqs=mql.getMediaQueries();var t={};for(var i=0;i<mqs.length;i++){var type=mqs[i].getMediaType();if(mqs[i].getExpressions().length===0){continue}
var typeAllowed=!0;if(type!=='all'&&ts&&ts.length>0){typeAllowed=!1;for(var j=0;j<ts.length;j++){if(ts[j]===type){typeAllowed=!0}}}
if(typeAllowed&&testMediaQuery(mqs[i])){t[type]=!0}}
var s=[],c=0;for(var n in t){if(t.hasOwnProperty(n)){if(c>0){s[c++]=','}
s[c++]=n}}
if(s.length>0){styles[styles.length]=cssHelper.addStyle('@media '+s.join('')+'{'+mql.getCssText()+'}',ts,!1)}};var testMediaQueryLists=function(mqls,ts){for(var i=0;i<mqls.length;i++){testMediaQueryList(mqls[i],ts)}};var testStylesheet=function(stsh){var amqs=stsh.getAttrMediaQueries();var allPassed=!1;var t={};for(var i=0;i<amqs.length;i++){if(testMediaQuery(amqs[i])){t[amqs[i].getMediaType()]=amqs[i].getExpressions().length>0}}
var ts=[],tswe=[];for(var n in t){if(t.hasOwnProperty(n)){ts[ts.length]=n;if(t[n]){tswe[tswe.length]=n}
if(n==='all'){allPassed=!0}}}
if(tswe.length>0){styles[styles.length]=cssHelper.addStyle(stsh.getCssText(),tswe,!1)}
var mqls=stsh.getMediaQueryLists();if(allPassed){testMediaQueryLists(mqls)}
else{testMediaQueryLists(mqls,ts)}};var testStylesheets=function(stshs){for(var i=0;i<stshs.length;i++){testStylesheet(stshs[i])}
if(ua.ie){document.documentElement.style.display='block';setTimeout(function(){document.documentElement.style.display=''},0);setTimeout(function(){cssHelper.broadcast('cssMediaQueriesTested')},100)}
else{cssHelper.broadcast('cssMediaQueriesTested')}};var test=function(){for(var i=0;i<styles.length;i++){cssHelper.removeStyle(styles[i])}
styles=[];cssHelper.stylesheets(testStylesheets)};var scrollbarWidth=0;var checkForResize=function(){var cvpw=cssHelper.getViewportWidth();var cvph=cssHelper.getViewportHeight();if(ua.ie){var el=document.createElement('div');el.style.position='absolute';el.style.top='-9999em';el.style.overflow='scroll';document.body.appendChild(el);scrollbarWidth=el.offsetWidth-el.clientWidth;document.body.removeChild(el)}
var timer;var resizeHandler=function(){var vpw=cssHelper.getViewportWidth();var vph=cssHelper.getViewportHeight();if(Math.abs(vpw-cvpw)>scrollbarWidth||Math.abs(vph-cvph)>scrollbarWidth){cvpw=vpw;cvph=vph;clearTimeout(timer);timer=setTimeout(function(){if(!nativeSupport()){test()}
else{cssHelper.broadcast('cssMediaQueriesTested')}},500)}};window.onresize=function(){var x=window.onresize||function(){};return function(){x();resizeHandler()}}()};var docEl=document.documentElement;docEl.style.marginLeft='-32767px';setTimeout(function(){docEl.style.marginLeft=''},5000);return function(){if(!nativeSupport()){cssHelper.addListener('newStyleParsed',function(el){testStylesheet(el.cssHelperParsed.stylesheet)});cssHelper.addListener('cssMediaQueriesTested',function(){if(ua.ie){docEl.style.width='1px'}
setTimeout(function(){docEl.style.width='';docEl.style.marginLeft=''},0);cssHelper.removeListener('cssMediaQueriesTested',arguments.callee)});createMeter();test()}
else{docEl.style.marginLeft=''}
checkForResize()}}());try{document.execCommand('BackgroundImageCache',!1,!0)}catch(e){};