');\r\n filterContainer.append(div); \r\n }\r\n\r\n var searchFilter = document.getElementById('filter-search-field');\r\n var filterList = document.getElementsByClassName('checkBoxGroup');\r\n if (searchFilter && filterList.length) {\r\n var isFilterListContainingSearchFilter = filterList[0].getElementsByClassName('filter-search-field-wrapper');\r\n if (!isFilterListContainingSearchFilter.length) {\r\n filterList[0].append(searchFilter.parentElement.parentElement);\r\n } \r\n }\r\n\r\n var closeFilterTitle = document.getElementById('closeFilterTitle');\r\n if (!closeFilterTitle) {\r\n var filterContainer = document.getElementsByClassName('checkBoxGroup');\r\n if (filterContainer.length) {\r\n var div = document.createElement('div');\r\n div.classList.add('clear-filter');\r\n div.insertAdjacentHTML('beforeend', '
`);\r\n }\r\n container.parentElement.parentElement.insertAdjacentHTML('beforeend', `${thirdLevelRow[lastCounter].querySelector('.glide-controls').outerHTML}`);\r\n lastCounter++;\r\n });\r\n\r\n this.attachMobileEvents();\r\n this.dropdownLinks = new DropdownLinks();\r\n var firstItem = document.querySelector('.wizard-selector__mobile .level-title');\r\n firstItem.click();\r\n }\r\n }\r\n}\r\nexport default WizardSelector;","export function voyageToughtLeaderCounterAnimation (qSelector, start = 0, end = 1000, duration = 1000, thousandSeparator = \"\") {\r\n const target = document.querySelector(qSelector);\r\n if (!target)\r\n return;\r\n\r\n let startTimestamp = null;\r\n const step = (timestamp) => {\r\n if (!startTimestamp) startTimestamp = timestamp;\r\n const progress = Math.min((timestamp - startTimestamp) / duration, 1);\r\n const result = formatNumber(Math.floor(progress * (end - start) + start), thousandSeparator);\r\n target.innerText = result;\r\n if (progress < 1) {\r\n window.requestAnimationFrame(step);\r\n }\r\n };\r\n window.requestAnimationFrame(step);\r\n\r\n const formatNumber = (num, thousandSeparator = \"\") => {\r\n return num.toString().replace(/\\B(?=(\\d{3})+(?!\\d))/g, thousandSeparator);\r\n }\r\n}","import IePolyfills from './iePolyfills';\r\nimport LazyImage from './lazy-images';\r\nimport PubSub from './content-hub';\r\nimport RelatedContent from './related-content';\r\nimport FilterList from './filter-list';\r\nimport UrlHandler from './url-handler';\r\nimport ListsContent from './lists-content';\r\nimport GridListsContent from './grid-lists-content';\r\nimport VoyageGridItemClassUpdater from './voyage-grid-item-class-updater';\r\nimport VoyageMobileStyleHelper from './voyage-mobile-styles-helper';\r\nimport Glide from \"@glidejs/glide\";\r\nimport DropdownLinks from './dropdown-links';\r\nimport { removeExpandableListeners,addExpandableListeners } from './voyage-expandable-handler';\r\nimport voyageCarouselHandler from './voyage-carousel-handler';\r\nimport handleUnorthodoxGridItems from './voyage-unorthodox-list-handler';\r\nimport {addEventListeners} from './voyage-anchor-menu-handler';\r\nimport DomHelper from './helpers/dom-helper';\r\nimport ArrayHelper from './helpers/array-helper';\r\nimport IconHelper from './helpers/icon-helper';\r\nimport GUIDHelper from './helpers/guid-helper';\r\nimport DateTimeHelper from './date-time-handling';\r\nimport QueryStringHelper from './helpers/query-string-helper';\r\nimport APIHelper from './helpers/api-helper';\r\nimport ObjectHelper from './helpers/object-helper';\r\nimport DeviceHelper from './helpers/device-helper';\r\nimport LanguageSelectorHelper from './helpers/language-selector-helper';\r\nimport ElasticSearchHelper from './elastic-search-helper';\r\nimport Authors from './authors';\r\nimport populateAnchorMenuByTags from './voyage-anchor-menu-populator';\r\nimport voyageInsightsFilterTitle, { voyageInsights2FilterTitle } from './voyage-insight-filter-title';\r\nimport truncate from './helpers/truncate';\r\nimport StickyLeftNavigation from './sticky-left-navigation';\r\nimport IRScroll from './ir-scroll';\r\nimport Tabs from './tabs';\r\nimport sliderHandler from './slider-handler';\r\nimport WizardSelector from './wizard-selector';\r\nimport {voyageToughtLeaderCounterAnimation} from './voyage-tought-leader-counter-animation';\r\n\r\nconst MainOne = {\r\n init: function() {\r\n /* Polyfills */\r\n window.IePolyfills = new IePolyfills();\r\n\r\n /* Helpers */\r\n window.DomHelper = DomHelper;\r\n window.ArrayHelper = ArrayHelper;\r\n window.GUIDHelper = GUIDHelper;\r\n window.IconHelper = IconHelper;\r\n window.QueryStringHelper = QueryStringHelper;\r\n window.DateTimeHelper = DateTimeHelper;\r\n window.APIHelper = APIHelper;\r\n window.ObjectHelper = ObjectHelper;\r\n window.DeviceHelper = DeviceHelper;\r\n window.ElasticSearchHelper = ElasticSearchHelper;\r\n window.LanguageSelectorHelper = LanguageSelectorHelper;\r\n window.Authors = new Authors();\r\n\r\n /* Common tools */\r\n window.LazyImage = new LazyImage();\r\n\r\n /* Main components */\r\n window.ListsContent = new ListsContent();\r\n window.RelatedContent = RelatedContent;\r\n window.pubSubEvents = new PubSub();\r\n window.FilterList = new FilterList();\r\n window.UrlHandler = new UrlHandler();\r\n window.GridListsContent = new GridListsContent();\r\n window.VoyageGridItemClassUpdater = VoyageGridItemClassUpdater();\r\n window.VoyageMobileStyleHelper = VoyageMobileStyleHelper();\r\n window.VoyageGridItemClassUpdaterLazy = VoyageGridItemClassUpdater;\r\n window.Glide = Glide;\r\n window.DropdownLinks = DropdownLinks;\r\n window.removeExpandableListeners = removeExpandableListeners();\r\n window.addExpandableListeners= addExpandableListeners();\r\n window.addExpandableListenersLazy= addExpandableListeners;\r\n window.voyageCarouselHandler = voyageCarouselHandler();\r\n window.handleUnorthodoxGridItems=handleUnorthodoxGridItems();\r\n window.addEventListeners = addEventListeners();\r\n window.populateAnchorMenuByTags = populateAnchorMenuByTags();\r\n window.voyageInsightsFilterTitle = voyageInsightsFilterTitle;\r\n window.voyageInsights2FilterTitle = voyageInsights2FilterTitle;\r\n window.truncate = truncate;\r\n window.StickyLeftNavigation = StickyLeftNavigation;\r\n window.IRScroll = new IRScroll();\r\n window.Tabs = new Tabs();\r\n window.sliderHandler = sliderHandler();\r\n window.WizardSelector = WizardSelector;\r\n window.voyageToughtLeaderCounterAnimation = voyageToughtLeaderCounterAnimation;\r\n },\r\n};\r\n\r\ndocument.addEventListener(\r\n 'DOMContentLoaded',\r\n () => {\r\n var dropdownLinks = new window.DropdownLinks();\r\n dropdownLinks.init();\r\n },\r\n false\r\n)\r\n\r\nMainOne.init();","import picturefill from 'picturefill';\r\nimport objectFitImages from 'object-fit-images';\r\n\r\nclass IePolyfills {\r\n constructor() {\r\n this.init();\r\n }\r\n\r\n init() {\r\n // IE\r\n window.Object.assign === undefined ? window.Object.assign = Object.assign : null;\r\n\r\n if (window.document.documentMode) {\r\n picturefill();\r\n objectFitImages();\r\n }\r\n // missing forEach on NodeList for IE11\r\n if (window.NodeList && !NodeList.prototype.forEach) {\r\n NodeList.prototype.forEach = Array.prototype.forEach;\r\n }\r\n\r\n if (!Array.from) {\r\n Array.from = (function () {\r\n var toStr = Object.prototype.toString;\r\n var isCallable = function (fn) {\r\n return typeof fn === 'function' || toStr.call(fn) === '[object Function]';\r\n };\r\n var toInteger = function (value) {\r\n var number = Number(value);\r\n if (isNaN(number)) { return 0; }\r\n if (number === 0 || !isFinite(number)) { return number; }\r\n return (number > 0 ? 1 : -1) * Math.floor(Math.abs(number));\r\n };\r\n var maxSafeInteger = Math.pow(2, 53) - 1;\r\n var toLength = function (value) {\r\n var len = toInteger(value);\r\n return Math.min(Math.max(len, 0), maxSafeInteger);\r\n };\r\n \r\n // The length property of the from method is 1.\r\n return function from(arrayLike/*, mapFn, thisArg */) {\r\n // 1. Let C be the this value.\r\n var C = this;\r\n \r\n // 2. Let items be ToObject(arrayLike).\r\n var items = Object(arrayLike);\r\n \r\n // 3. ReturnIfAbrupt(items).\r\n if (arrayLike == null) {\r\n throw new TypeError(\"Array.from requires an array-like object - not null or undefined\");\r\n }\r\n \r\n // 4. If mapfn is undefined, then let mapping be false.\r\n var mapFn = arguments.length > 1 ? arguments[1] : void undefined;\r\n var T;\r\n if (typeof mapFn !== 'undefined') {\r\n // 5. else\r\n // 5. a If IsCallable(mapfn) is false, throw a TypeError exception.\r\n if (!isCallable(mapFn)) {\r\n throw new TypeError('Array.from: when provided, the second argument must be a function');\r\n }\r\n \r\n // 5. b. If thisArg was supplied, let T be thisArg; else let T be undefined.\r\n if (arguments.length > 2) {\r\n T = arguments[2];\r\n }\r\n }\r\n \r\n // 10. Let lenValue be Get(items, \"length\").\r\n // 11. Let len be ToLength(lenValue).\r\n var len = toLength(items.length);\r\n \r\n // 13. If IsConstructor(C) is true, then\r\n // 13. a. Let A be the result of calling the [[Construct]] internal method of C with an argument list containing the single item len.\r\n // 14. a. Else, Let A be ArrayCreate(len).\r\n var A = isCallable(C) ? Object(new C(len)) : new Array(len);\r\n \r\n // 16. Let k be 0.\r\n var k = 0;\r\n // 17. Repeat, while k < len… (also steps a - h)\r\n var kValue;\r\n while (k < len) {\r\n kValue = items[k];\r\n if (mapFn) {\r\n A[k] = typeof T === 'undefined' ? mapFn(kValue, k) : mapFn.call(T, kValue, k);\r\n } else {\r\n A[k] = kValue;\r\n }\r\n k += 1;\r\n }\r\n // 18. Let putStatus be Put(A, \"length\", len, true).\r\n A.length = len;\r\n // 20. Return A.\r\n return A;\r\n };\r\n }());\r\n }\r\n }\r\n}\r\n\r\nexport default IePolyfills;\r\n","class Authors {\r\n constructor() {\r\n this.init();\r\n }\r\n\r\n init() {\r\n const authorsPlaceholder = document.getElementsByClassName('authors-placeholder');\r\n const authorsList = document.getElementsByClassName('js-authors-list');\r\n if (authorsPlaceholder && authorsPlaceholder.length > 0 && authorsList && authorsList.length > 0) {\r\n this.showAuthors(authorsList[0]);\r\n authorsPlaceholder[0].innerHTML = authorsList[0].outerHTML;\r\n authorsPlaceholder[0].firstChild.classList.remove('js-authors-list');\r\n authorsList[0].parentNode.removeChild(authorsList[0]);\r\n }\r\n else if (authorsPlaceholder && authorsPlaceholder.length > 0) {\r\n authorsPlaceholder[0].parentNode.removeChild(authorsPlaceholder[0]);\r\n }\r\n else if (authorsList && authorsList.length > 0) {\r\n this.showAuthors(authorsList[0]);\r\n }\r\n }\r\n\r\n showAuthors(authors) {\r\n if (authors.getAttribute('style') != null && authors.getAttribute('style') != \"\") {\r\n authors.setAttribute('style', '');\r\n }\r\n }\r\n}\r\n\r\nexport default Authors;","\r\nclass LazyImage {\r\n constructor() {\r\n const images = window.document.querySelectorAll('source, img');\r\n const backgroundImages = window.document.querySelectorAll('.background-lazy');\r\n\r\n // Some config parameters for the IntersectionObserve\r\n const config = {\r\n // If the image gets within 50px in the Y axis, start the download.\r\n rootMargin: '50px 0px',\r\n threshold: 0.01\r\n };\r\n\r\n let observer;\r\n\r\n const onIntersection = (entries) => {\r\n entries.forEach(entry => {\r\n if (entry.intersectionRatio > 0) {\r\n // Stop watching and load the image\r\n observer.unobserve(entry.target);\r\n // call our method: preloadImage\r\n if (entry.target.dataset.background) {\r\n this.preloadBackgroundImage(entry.target);\r\n } else {\r\n this.preloadImage(entry.target);\r\n }\r\n }\r\n });\r\n };\r\n\r\n // If we don't have support for intersection observer, load the images immediately\r\n if (!('IntersectionObserver' in window)) {\r\n images.forEach(image => this.preloadImage(image));\r\n backgroundImages.forEach(backgroundImage => this.preloadBackgroundImage(backgroundImage));\r\n } else {\r\n // It is supported, load the images by calling our method: onIntersection\r\n observer = new IntersectionObserver(onIntersection, config);\r\n images.forEach(image => {\r\n observer.observe(image);\r\n });\r\n\r\n backgroundImages.forEach(backgroundImage => {\r\n observer.observe(backgroundImage);\r\n });\r\n }\r\n\r\n window.onbeforeprint = (event) => {\r\n images.forEach(image => this.preloadImage(image));\r\n backgroundImages.forEach(backgroundImage => this.preloadBackgroundImage(backgroundImage));\r\n };\r\n }\r\n\r\n preloadImage(element) {\r\n if (element.dataset && element.dataset.src) {\r\n element.src = element.dataset.src;\r\n if (element.parentNode.parentNode) {\r\n element.parentNode.parentNode.classList.remove('lazy');\r\n }\r\n }\r\n if (element.dataset && element.dataset.srcset) {\r\n element.srcset = element.dataset.srcset;\r\n }\r\n }\r\n\r\n preloadBackgroundImage(element) {\r\n if (element.dataset && element.dataset.background) {\r\n element.style.backgroundImage = `url('${element.dataset.background}')`;\r\n }\r\n }\r\n}\r\n\r\nexport default LazyImage;\r\n","class ListsContent {\r\n constructor() {\r\n this.classes = {\r\n single: ['col-md-12', 'col-lg-12', 'card-single'],\r\n gridSingle: ['col-md-12', 'col-lg-12'],\r\n double: ['col-md-6', 'col-lg-6'],\r\n cardDouble: ['col-md-6', 'col-lg-6', 'card-double'],\r\n multi: ['col-md-6', 'col-lg-4']\r\n };\r\n }\r\n\r\n styleLists() {\r\n const cardWrapper = document.querySelectorAll('.js-card-lift.automatic');\r\n for (let i = 0; i < cardWrapper.length; i++) {\r\n let visibleElements = [...cardWrapper[i].children].filter(n => !n.classList.contains('do-not-show') && !n.classList.contains('grid-card-lift') && n.classList.contains('card-lift'));\r\n this.addCssClasses(visibleElements);\r\n }\r\n }\r\n\r\n styleGridLists() {\r\n const cardGridWrapper = document.querySelectorAll('.js-card-lift-grid .js-card-lift');\r\n for (let i = 0; i < cardGridWrapper.length; i++) {\r\n let visibleGridElements = [...cardGridWrapper[i].children].filter(n => !n.classList.contains('do-not-show') && n.classList.contains('card-lift'));\r\n visibleGridElements.forEach(el => {\r\n el.classList.remove('card-lift');\r\n el.classList.add('grid-card-lift'); \r\n }); \r\n \r\n switch(visibleGridElements.length) {\r\n case 1:\r\n this.changeLayout(visibleGridElements, this.classes.gridSingle);\r\n break;\r\n case 2:\r\n this.changeLayout(visibleGridElements, this.classes.double);\r\n break;\r\n default:\r\n this.changeLayout(visibleGridElements, this.classes.multi);\r\n }\r\n }\r\n }\r\n\r\n styleSingleLists() {\r\n const cardWrapper = document.querySelectorAll('.js-card-lift.list-view');\r\n for (let i = 0; i < cardWrapper.length; i++) {\r\n let visibleElements = [...cardWrapper[i].children].filter(n => !n.classList.contains('do-not-show') && !n.classList.contains('grid-card-lift') && n.classList.contains('card-lift'));\r\n \r\n switch(visibleElements.length) {\r\n case 1:\r\n this.changeLayout(visibleElements.slice(0, 1), this.classes.gridSingle);\r\n break;\r\n case 2:\r\n this.changeLayout(visibleElements.slice(0, 2), this.classes.double);\r\n break;\r\n default:\r\n this.changeLayout(visibleElements.slice(), this.classes.multi);\r\n }\r\n }\r\n }\r\n\r\n addCssClasses(visibleElements) {\r\n switch(visibleElements.length % 3) {\r\n case 1:\r\n this.changeLayout(visibleElements.slice(0, 1), this.classes.single);\r\n this.changeLayout(visibleElements.slice(1), this.classes.multi);\r\n break;\r\n case 2:\r\n this.changeLayout(visibleElements.slice(0, 2), this.classes.cardDouble);\r\n this.changeLayout(visibleElements.slice(2), this.classes.multi);\r\n break;\r\n default:\r\n this.changeLayout(visibleElements.slice(), this.classes.multi);\r\n }\r\n }\r\n\r\n changeLayout(items, classes) {\r\n if(items && items.length > 0) {\r\n items.forEach(el => {\r\n if(el.nodeType === Node.ELEMENT_NODE ) {\r\n el.classList.remove(...this.classes.single, ...this.classes.double, ...this.classes.multi, ...this.classes.cardDouble);\r\n el.classList.add(...classes);\r\n } else{\r\n el.className = classes.reduce((cur, next) => cur + ' ' + next);\r\n }\r\n });\r\n }\r\n }\r\n }\r\n\r\nexport default ListsContent;\r\n","class PubSub {\r\n constructor() {\r\n this.subscribers = {\r\n 'hubsUpdate': [],\r\n 'urlUpdate': [] };\r\n }\r\n publish(eventName, data) {\r\n if (!this.subscribers[eventName]) return;\r\n this.subscribers[eventName].forEach((subscriberCallback) => {\r\n subscriberCallback(data !== undefined ? data : {});\r\n });\r\n }\r\n\r\n subscribe(eventName, callback) {\r\n if (!this.subscribers[eventName]) {\r\n this.subscribers[eventName] = [];\r\n }\r\n if (window.dobriInnerTest) {\r\n window.dobriInnerTest.push(callback);\r\n } else {\r\n window.dobriInnerTest = [];\r\n window.dobriInnerTest.push(callback);\r\n }\r\n this.subscribers[eventName].push(callback);\r\n\r\n return {\r\n unsubscribe() {\r\n this.subscribers[eventName].splice(index, 1);\r\n }\r\n };\r\n }\r\n}\r\n\r\nexport default PubSub;\r\n\r\n","class FilterList {\r\n constructor() {\r\n this.dataTaxon = [];\r\n this.init();\r\n\r\n window.pubSubEvents.subscribe('hubsUpdate', (params) => {\r\n if (this.hasSearchUrl()) {\r\n this.filterListsByIds(params);\r\n } else {\r\n this.filterListsByCategories(params);\r\n }\r\n });\r\n }\r\n\r\n filterListsByIds(params) {\r\n if(params && params.length > 0) {\r\n this.getFilteredIds(params).then((ids) => {\r\n var foundLists = this.dataTaxon.filter(item => {\r\n return item.hubId && ids.some((id) => item.hubId.toLowerCase() == id.toLowerCase());\r\n });\r\n \r\n if (foundLists) {\r\n foundLists.forEach(elm => {\r\n this.showList(elm);\r\n });\r\n }\r\n \r\n const listsToHide = this.dataTaxon.filter((item) => foundLists.indexOf(item) === -1 && item.taxons.length > 0);\r\n if (listsToHide) {\r\n listsToHide.forEach( el => this.hideList(el));\r\n }\r\n window.ListsContent.styleLists();\r\n });\r\n } else{\r\n this.dataTaxon.forEach(el => this.showList(el));\r\n window.ListsContent.styleLists();\r\n }\r\n\r\n \r\n }\r\n\r\n // Old\r\n filterListsByCategories(params) {\r\n if(params && params.length > 0) {\r\n this.params = params;\r\n let foundLists = [];\r\n foundLists = this.dataTaxon.filter(list => {\r\n if (!(list.hasOwnProperty('taxons') && ObjectHelper.isArray(list.taxons))) {\r\n return false;\r\n }\r\n\r\n var taxaParams = params.filter((param) =>{\r\n return !(param.hasOwnProperty('fieldName') || param.taxonName === 'year')\r\n });\r\n\r\n const taxas = list.taxons.slice();\r\n return taxaParams.every((param) => {\r\n const foundTaxa = taxas.filter((tx) => {\r\n return tx.taxonName.toLowerCase() === param.taxonName.toLowerCase();\r\n });\r\n\r\n if (foundTaxa.length > 0) {\r\n const formattedParams = param.value.map(i =>\r\n i.toLowerCase().replace(/-|\\s/g, '')\r\n );\r\n\r\n return foundTaxa[0].value.some(val => formattedParams.includes(val.replace(/-|\\s/g, '').toLowerCase()));\r\n }\r\n\r\n return false;\r\n });\r\n });\r\n\r\n\r\n if (foundLists) {\r\n foundLists.forEach(elm => {\r\n this.showList(elm);\r\n });\r\n }\r\n\r\n const listsToHide = this.dataTaxon.filter((item) => foundLists.indexOf(item) === -1 && item.taxons.length > 0);\r\n if (listsToHide) {\r\n listsToHide.forEach( el => this.hideList(el));\r\n }\r\n } else{\r\n this.dataTaxon.forEach(el => this.showList(el));\r\n }\r\n\r\n window.ListsContent.styleLists();\r\n window.VoyageGridItemClassUpdaterLazy();\r\n }\r\n\r\n\r\n init() {\r\n const filter = document.querySelector('.filter-widget__wrapper');\r\n if(filter) {\r\n this.hideDuplicateElements();\r\n }\r\n\r\n const lists = document.querySelectorAll('[data-taxa]');\r\n lists.forEach(element => {\r\n const elId = element.getAttribute('id');\r\n const taxons = element.getAttribute('data-taxa');\r\n const hubId = element.getAttribute('data-hub-id');\r\n\r\n const listObj = {\r\n id: elId,\r\n hubId: hubId\r\n };\r\n\r\n if (taxons && taxons.length > 0) {\r\n listObj.taxons = JSON.parse(taxons);\r\n }\r\n\r\n this.dataTaxon.push(listObj);\r\n });\r\n\r\n this.searchUrl = window.contentHubResultServiceUrl;\r\n\r\n if (!this.searchUrl) {\r\n console.log('hub search not configured. Filtering by categories');\r\n }\r\n }\r\n\r\n hasSearchUrl(){\r\n return !!this.searchUrl;\r\n }\r\n\r\n hideList(el) {\r\n const listEl = document.getElementById(el.id);\r\n if(listEl && !listEl.classList.contains('do-not-show')) {\r\n listEl.classList.add('do-not-show');\r\n }\r\n }\r\n\r\n showList(el) {\r\n const listEl = document.getElementById(el.id);\r\n if(listEl && listEl.classList.contains('do-not-show')) {\r\n listEl.classList.remove('do-not-show');\r\n }\r\n }\r\n\r\n hideDuplicateElements() {\r\n const items = document.querySelectorAll('.card-lift');\r\n const links = [];\r\n items.forEach(item => {\r\n const href = item.querySelector('a').href;\r\n if(links.indexOf(href) === -1) {\r\n links.push(href);\r\n } else{\r\n item.classList.add('do-not-show');\r\n }\r\n });\r\n }\r\n\r\n getFilteredIds(obj) {\r\n const data = ElasticSearchHelper.buildFilterListRequestBody(obj);\r\n if(data)\r\n\r\n return new Promise((resolve, reject) => {\r\n APIHelper.post({\r\n url: this.searchUrl,\r\n data\r\n }).then((response) => {\r\n let hits = response.hits.hits;\r\n\r\n let ids = [];\r\n for (var i = 0; i < hits.length; i++) {\r\n ids.push(hits[i]._id)\r\n }\r\n \r\n resolve(ids);\r\n })\r\n });\r\n }\r\n}\r\n\r\nexport default FilterList;\r\n","class UrlHandler {\r\n constructor() {\r\n this.urlArr = [];\r\n\r\n this.init();\r\n\r\n window.pubSubEvents.subscribe('hubsUpdate', (params) => {\r\n if(params && params.length > 0) {\r\n const dataAsQueryString = this.parseData(params).filter((value, index, self) => {\r\n return self.indexOf(value) === index;\r\n });\r\n window.history.pushState(\r\n null,\r\n 'contentHubsStateTitle',\r\n window.location.pathname.trim('/') + '?' + dataAsQueryString.join('&'));\r\n } else {\r\n window.history.pushState(null, 'contentHubsStateTitle', window.location.pathname.trim('/'));\r\n }\r\n });\r\n }\r\n\r\n init() {\r\n if (window.location.search > '') {\r\n const urlParams = location.search.substring(1).split('&').map((str) => {\r\n const tmp = str.split('=');\r\n if (tmp.length > 1) {\r\n return {\r\n param: tmp[0],\r\n values: tmp[1].split(/[, ]+/)\r\n };\r\n }\r\n });\r\n\r\n urlParams.forEach(param => setTimeout(function() { window.pubSubEvents.publish('urlUpdate', param); }, 600));\r\n }\r\n }\r\n\r\n parseData(data) {\r\n const result = [];\r\n const searchFields = [];\r\n let searchValue = '';\r\n\r\n data.forEach(el => {\r\n if (el.hasOwnProperty('fieldName')) {\r\n if (el.fieldName != 'search-value-with-fields') {\r\n searchFields.push(encodeURI(el.fieldName));\r\n }\r\n searchValue = encodeURI(el.value);\r\n }\r\n else {\r\n result.push(el.taxonName + '=' + el.value.join())\r\n }\r\n });\r\n\r\n if (searchValue) {\r\n result.push('search-value-with-fields' + '=' + searchValue + \",\" + searchFields.join());\r\n }\r\n return result;\r\n }\r\n}\r\n\r\nexport default UrlHandler;\r\n","\r\nclass GridListsContent {\r\n constructor() {\r\n this.init();\r\n }\r\n\r\n init() {\r\n if (document.querySelector('.js-card-lift-grid') !== null) {\r\n window.ListsContent.styleGridLists();\r\n }\r\n }\r\n}\r\n\r\nexport default GridListsContent;\r\n","class Tabs {\r\n constructor() {\r\n this.init();\r\n }\r\n\r\n init() {\r\n const tabs = document.querySelectorAll('.tabWidget');\r\n const isEditMode = document.querySelectorAll('.sfPageEditor').length > 0;\r\n\r\n tabs.forEach(tab => {\r\n tab.classList.add('tabWrapper');\r\n var tabsCount = 0;\r\n var tabWrapperUL = tab.querySelector('ul.tabs');\r\n var tabContent = tab.querySelector('.tabContent')\r\n\r\n //generate desktop tabs\r\n tab.querySelectorAll('.tabHeaderText .sfContentBlock').forEach(el => {\r\n var liElement = document.createElement('li');\r\n liElement.innerHTML = el.innerHTML;\r\n tabWrapperUL.appendChild(liElement);\r\n tabsCount++;\r\n });\r\n tab.querySelectorAll('.tabHeaderText .ui-content-block').forEach(el => {\r\n var liElement = document.createElement('li');\r\n liElement.innerHTML = el.innerHTML;\r\n tabWrapperUL.appendChild(liElement);\r\n tabsCount++;\r\n });\r\n\r\n if (!isEditMode) {\r\n tab.querySelectorAll('.tabHeaderWrapper').forEach(el => {\r\n el.classList.add('desktopHidden');\r\n });\r\n }\r\n\r\n //show first tab on desktop on init\r\n tab.querySelector('.singleTabWrapper').classList.add('visible');\r\n tabWrapperUL.querySelector('li').classList.add('active');\r\n tab.querySelector('.tabHeaderWrapper').classList.add('active');\r\n\r\n if (DeviceHelper.isMobilebrowser()) {\r\n tab.querySelector('.singleTabWrapper').classList.remove('visible');\r\n tabWrapperUL.querySelector('li').classList.remove('active');\r\n tab.querySelector('.tabHeaderWrapper').classList.remove('active');\r\n }\r\n\r\n //desktop tab click function\r\n var tabWrapperLi = tabWrapperUL.querySelectorAll('li');\r\n tabWrapperLi.forEach(tabLi => {\r\n tabLi.addEventListener('click', (ev) => {\r\n tabWrapperUL.querySelector('.active').classList.remove('active');\r\n let el = ev.target.tagName === 'LI' ? ev.target : ev.target.closest('li');\r\n let index = Array.prototype.slice.call(tabWrapperUL.children).indexOf(el)\r\n el.classList.add('active');\r\n tab.querySelector('.singleTabWrapper.visible').classList.remove('visible');\r\n tab.querySelectorAll('.singleTabWrapper')[index].classList.add('visible');\r\n tab.querySelector('.tabHeaderWrapper.active').classList.remove('active')\r\n tab.querySelectorAll('.tabHeaderWrapper')[index].classList.add('active');\r\n });\r\n });\r\n\r\n if (!isEditMode) {\r\n //mobile accordeon click\r\n var accordionWrapperLi = tabContent.querySelectorAll('.tabHeaderText');\r\n accordionWrapperLi.forEach(accordion => {\r\n accordion.addEventListener('click', (ev) => {\r\n let el = ev.target.closest(\".singleTabWrapper\");\r\n let currentActive = el.querySelector('.tabHeaderWrapper');\r\n if (currentActive.classList.contains('active')) {\r\n currentActive.classList.remove('active');\r\n currentActive.parentElement.classList.remove('visible');\r\n }\r\n else {\r\n currentActive.classList.add('active');\r\n currentActive.parentElement.classList.add('visible');\r\n }\r\n });\r\n });\r\n }\r\n });\r\n\r\n if (isEditMode) {\r\n var contentSwitcher = document.querySelector('.sfContentSwitcher');\r\n if (contentSwitcher) {\r\n contentSwitcher.addEventListener('click', function (event) {\r\n var wrappers = document.querySelectorAll('.singleTabWrapper').forEach(singleTabWrapper => {\r\n if (!singleTabWrapper.querySelector('.tabHeaderText .sfContentBlock')\r\n && !singleTabWrapper.querySelector('.tabHeaderText .ui-content-block')) {\r\n if (!singleTabWrapper.classList.contains('visible')) {\r\n singleTabWrapper.classList.add('visible');\r\n }\r\n };\r\n });\r\n });\r\n }\r\n }\r\n }\r\n}\r\n\r\nexport default Tabs;","/*! picturefill - v3.0.2 - 2016-02-12\n * https://scottjehl.github.io/picturefill/\n * Copyright (c) 2016 https://github.com/scottjehl/picturefill/blob/master/Authors.txt; Licensed MIT\n */\n/*! Gecko-Picture - v1.0\n * https://github.com/scottjehl/picturefill/tree/3.0/src/plugins/gecko-picture\n * Firefox's early picture implementation (prior to FF41) is static and does\n * not react to viewport changes. This tiny module fixes this.\n */\n(function(window) {\n\t/*jshint eqnull:true */\n\tvar ua = navigator.userAgent;\n\n\tif ( window.HTMLPictureElement && ((/ecko/).test(ua) && ua.match(/rv\\:(\\d+)/) && RegExp.$1 < 45) ) {\n\t\taddEventListener(\"resize\", (function() {\n\t\t\tvar timer;\n\n\t\t\tvar dummySrc = document.createElement(\"source\");\n\n\t\t\tvar fixRespimg = function(img) {\n\t\t\t\tvar source, sizes;\n\t\t\t\tvar picture = img.parentNode;\n\n\t\t\t\tif (picture.nodeName.toUpperCase() === \"PICTURE\") {\n\t\t\t\t\tsource = dummySrc.cloneNode();\n\n\t\t\t\t\tpicture.insertBefore(source, picture.firstElementChild);\n\t\t\t\t\tsetTimeout(function() {\n\t\t\t\t\t\tpicture.removeChild(source);\n\t\t\t\t\t});\n\t\t\t\t} else if (!img._pfLastSize || img.offsetWidth > img._pfLastSize) {\n\t\t\t\t\timg._pfLastSize = img.offsetWidth;\n\t\t\t\t\tsizes = img.sizes;\n\t\t\t\t\timg.sizes += \",100vw\";\n\t\t\t\t\tsetTimeout(function() {\n\t\t\t\t\t\timg.sizes = sizes;\n\t\t\t\t\t});\n\t\t\t\t}\n\t\t\t};\n\n\t\t\tvar findPictureImgs = function() {\n\t\t\t\tvar i;\n\t\t\t\tvar imgs = document.querySelectorAll(\"picture > img, img[srcset][sizes]\");\n\t\t\t\tfor (i = 0; i < imgs.length; i++) {\n\t\t\t\t\tfixRespimg(imgs[i]);\n\t\t\t\t}\n\t\t\t};\n\t\t\tvar onResize = function() {\n\t\t\t\tclearTimeout(timer);\n\t\t\t\ttimer = setTimeout(findPictureImgs, 99);\n\t\t\t};\n\t\t\tvar mq = window.matchMedia && matchMedia(\"(orientation: landscape)\");\n\t\t\tvar init = function() {\n\t\t\t\tonResize();\n\n\t\t\t\tif (mq && mq.addListener) {\n\t\t\t\t\tmq.addListener(onResize);\n\t\t\t\t}\n\t\t\t};\n\n\t\t\tdummySrc.srcset = \"data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\";\n\n\t\t\tif (/^[c|i]|d$/.test(document.readyState || \"\")) {\n\t\t\t\tinit();\n\t\t\t} else {\n\t\t\t\tdocument.addEventListener(\"DOMContentLoaded\", init);\n\t\t\t}\n\n\t\t\treturn onResize;\n\t\t})());\n\t}\n})(window);\n\n/*! Picturefill - v3.0.2\n * http://scottjehl.github.io/picturefill\n * Copyright (c) 2015 https://github.com/scottjehl/picturefill/blob/master/Authors.txt;\n * License: MIT\n */\n\n(function( window, document, undefined ) {\n\t// Enable strict mode\n\t\"use strict\";\n\n\t// HTML shim|v it for old IE (IE9 will still need the HTML video tag workaround)\n\tdocument.createElement( \"picture\" );\n\n\tvar warn, eminpx, alwaysCheckWDescriptor, evalId;\n\t// local object for method references and testing exposure\n\tvar pf = {};\n\tvar isSupportTestReady = false;\n\tvar noop = function() {};\n\tvar image = document.createElement( \"img\" );\n\tvar getImgAttr = image.getAttribute;\n\tvar setImgAttr = image.setAttribute;\n\tvar removeImgAttr = image.removeAttribute;\n\tvar docElem = document.documentElement;\n\tvar types = {};\n\tvar cfg = {\n\t\t//resource selection:\n\t\talgorithm: \"\"\n\t};\n\tvar srcAttr = \"data-pfsrc\";\n\tvar srcsetAttr = srcAttr + \"set\";\n\t// ua sniffing is done for undetectable img loading features,\n\t// to do some non crucial perf optimizations\n\tvar ua = navigator.userAgent;\n\tvar supportAbort = (/rident/).test(ua) || ((/ecko/).test(ua) && ua.match(/rv\\:(\\d+)/) && RegExp.$1 > 35 );\n\tvar curSrcProp = \"currentSrc\";\n\tvar regWDesc = /\\s+\\+?\\d+(e\\d+)?w/;\n\tvar regSize = /(\\([^)]+\\))?\\s*(.+)/;\n\tvar setOptions = window.picturefillCFG;\n\t/**\n\t * Shortcut property for https://w3c.github.io/webappsec/specs/mixedcontent/#restricts-mixed-content ( for easy overriding in tests )\n\t */\n\t// baseStyle also used by getEmValue (i.e.: width: 1em is important)\n\tvar baseStyle = \"position:absolute;left:0;visibility:hidden;display:block;padding:0;border:none;font-size:1em;width:1em;overflow:hidden;clip:rect(0px, 0px, 0px, 0px)\";\n\tvar fsCss = \"font-size:100%!important;\";\n\tvar isVwDirty = true;\n\n\tvar cssCache = {};\n\tvar sizeLengthCache = {};\n\tvar DPR = window.devicePixelRatio;\n\tvar units = {\n\t\tpx: 1,\n\t\t\"in\": 96\n\t};\n\tvar anchor = document.createElement( \"a\" );\n\t/**\n\t * alreadyRun flag used for setOptions. is it true setOptions will reevaluate\n\t * @type {boolean}\n\t */\n\tvar alreadyRun = false;\n\n\t// Reusable, non-\"g\" Regexes\n\n\t// (Don't use \\s, to avoid matching non-breaking space.)\n\tvar regexLeadingSpaces = /^[ \\t\\n\\r\\u000c]+/,\n\t regexLeadingCommasOrSpaces = /^[, \\t\\n\\r\\u000c]+/,\n\t regexLeadingNotSpaces = /^[^ \\t\\n\\r\\u000c]+/,\n\t regexTrailingCommas = /[,]+$/,\n\t regexNonNegativeInteger = /^\\d+$/,\n\n\t // ( Positive or negative or unsigned integers or decimals, without or without exponents.\n\t // Must include at least one digit.\n\t // According to spec tests any decimal point must be followed by a digit.\n\t // No leading plus sign is allowed.)\n\t // https://html.spec.whatwg.org/multipage/infrastructure.html#valid-floating-point-number\n\t regexFloatingPoint = /^-?(?:[0-9]+|[0-9]*\\.[0-9]+)(?:[eE][+-]?[0-9]+)?$/;\n\n\tvar on = function(obj, evt, fn, capture) {\n\t\tif ( obj.addEventListener ) {\n\t\t\tobj.addEventListener(evt, fn, capture || false);\n\t\t} else if ( obj.attachEvent ) {\n\t\t\tobj.attachEvent( \"on\" + evt, fn);\n\t\t}\n\t};\n\n\t/**\n\t * simple memoize function:\n\t */\n\n\tvar memoize = function(fn) {\n\t\tvar cache = {};\n\t\treturn function(input) {\n\t\t\tif ( !(input in cache) ) {\n\t\t\t\tcache[ input ] = fn(input);\n\t\t\t}\n\t\t\treturn cache[ input ];\n\t\t};\n\t};\n\n\t// UTILITY FUNCTIONS\n\n\t// Manual is faster than RegEx\n\t// http://jsperf.com/whitespace-character/5\n\tfunction isSpace(c) {\n\t\treturn (c === \"\\u0020\" || // space\n\t\t c === \"\\u0009\" || // horizontal tab\n\t\t c === \"\\u000A\" || // new line\n\t\t c === \"\\u000C\" || // form feed\n\t\t c === \"\\u000D\"); // carriage return\n\t}\n\n\t/**\n\t * gets a mediaquery and returns a boolean or gets a css length and returns a number\n\t * @param css mediaqueries or css length\n\t * @returns {boolean|number}\n\t *\n\t * based on: https://gist.github.com/jonathantneal/db4f77009b155f083738\n\t */\n\tvar evalCSS = (function() {\n\n\t\tvar regLength = /^([\\d\\.]+)(em|vw|px)$/;\n\t\tvar replace = function() {\n\t\t\tvar args = arguments, index = 0, string = args[0];\n\t\t\twhile (++index in args) {\n\t\t\t\tstring = string.replace(args[index], args[++index]);\n\t\t\t}\n\t\t\treturn string;\n\t\t};\n\n\t\tvar buildStr = memoize(function(css) {\n\n\t\t\treturn \"return \" + replace((css || \"\").toLowerCase(),\n\t\t\t\t// interpret `and`\n\t\t\t\t/\\band\\b/g, \"&&\",\n\n\t\t\t\t// interpret `,`\n\t\t\t\t/,/g, \"||\",\n\n\t\t\t\t// interpret `min-` as >=\n\t\t\t\t/min-([a-z-\\s]+):/g, \"e.$1>=\",\n\n\t\t\t\t// interpret `max-` as <=\n\t\t\t\t/max-([a-z-\\s]+):/g, \"e.$1<=\",\n\n\t\t\t\t//calc value\n\t\t\t\t/calc([^)]+)/g, \"($1)\",\n\n\t\t\t\t// interpret css values\n\t\t\t\t/(\\d+[\\.]*[\\d]*)([a-z]+)/g, \"($1 * e.$2)\",\n\t\t\t\t//make eval less evil\n\t\t\t\t/^(?!(e.[a-z]|[0-9\\.&=|><\\+\\-\\*\\(\\)\\/])).*/ig, \"\"\n\t\t\t) + \";\";\n\t\t});\n\n\t\treturn function(css, length) {\n\t\t\tvar parsedLength;\n\t\t\tif (!(css in cssCache)) {\n\t\t\t\tcssCache[css] = false;\n\t\t\t\tif (length && (parsedLength = css.match( regLength ))) {\n\t\t\t\t\tcssCache[css] = parsedLength[ 1 ] * units[parsedLength[ 2 ]];\n\t\t\t\t} else {\n\t\t\t\t\t/*jshint evil:true */\n\t\t\t\t\ttry{\n\t\t\t\t\t\tcssCache[css] = new Function(\"e\", buildStr(css))(units);\n\t\t\t\t\t} catch(e) {}\n\t\t\t\t\t/*jshint evil:false */\n\t\t\t\t}\n\t\t\t}\n\t\t\treturn cssCache[css];\n\t\t};\n\t})();\n\n\tvar setResolution = function( candidate, sizesattr ) {\n\t\tif ( candidate.w ) { // h = means height: || descriptor.type === 'h' do not handle yet...\n\t\t\tcandidate.cWidth = pf.calcListLength( sizesattr || \"100vw\" );\n\t\t\tcandidate.res = candidate.w / candidate.cWidth ;\n\t\t} else {\n\t\t\tcandidate.res = candidate.d;\n\t\t}\n\t\treturn candidate;\n\t};\n\n\t/**\n\t *\n\t * @param opt\n\t */\n\tvar picturefill = function( opt ) {\n\n\t\tif (!isSupportTestReady) {return;}\n\n\t\tvar elements, i, plen;\n\n\t\tvar options = opt || {};\n\n\t\tif ( options.elements && options.elements.nodeType === 1 ) {\n\t\t\tif ( options.elements.nodeName.toUpperCase() === \"IMG\" ) {\n\t\t\t\toptions.elements = [ options.elements ];\n\t\t\t} else {\n\t\t\t\toptions.context = options.elements;\n\t\t\t\toptions.elements = null;\n\t\t\t}\n\t\t}\n\n\t\telements = options.elements || pf.qsa( (options.context || document), ( options.reevaluate || options.reselect ) ? pf.sel : pf.selShort );\n\n\t\tif ( (plen = elements.length) ) {\n\n\t\t\tpf.setupRun( options );\n\t\t\talreadyRun = true;\n\n\t\t\t// Loop through all elements\n\t\t\tfor ( i = 0; i < plen; i++ ) {\n\t\t\t\tpf.fillImg(elements[ i ], options);\n\t\t\t}\n\n\t\t\tpf.teardownRun( options );\n\t\t}\n\t};\n\n\t/**\n\t * outputs a warning for the developer\n\t * @param {message}\n\t * @type {Function}\n\t */\n\twarn = ( window.console && console.warn ) ?\n\t\tfunction( message ) {\n\t\t\tconsole.warn( message );\n\t\t} :\n\t\tnoop\n\t;\n\n\tif ( !(curSrcProp in image) ) {\n\t\tcurSrcProp = \"src\";\n\t}\n\n\t// Add support for standard mime types.\n\ttypes[ \"image/jpeg\" ] = true;\n\ttypes[ \"image/gif\" ] = true;\n\ttypes[ \"image/png\" ] = true;\n\n\tfunction detectTypeSupport( type, typeUri ) {\n\t\t// based on Modernizr's lossless img-webp test\n\t\t// note: asynchronous\n\t\tvar image = new window.Image();\n\t\timage.onerror = function() {\n\t\t\ttypes[ type ] = false;\n\t\t\tpicturefill();\n\t\t};\n\t\timage.onload = function() {\n\t\t\ttypes[ type ] = image.width === 1;\n\t\t\tpicturefill();\n\t\t};\n\t\timage.src = typeUri;\n\t\treturn \"pending\";\n\t}\n\n\t// test svg support\n\ttypes[ \"image/svg+xml\" ] = document.implementation.hasFeature( \"http://www.w3.org/TR/SVG11/feature#Image\", \"1.1\" );\n\n\t/**\n\t * updates the internal vW property with the current viewport width in px\n\t */\n\tfunction updateMetrics() {\n\n\t\tisVwDirty = false;\n\t\tDPR = window.devicePixelRatio;\n\t\tcssCache = {};\n\t\tsizeLengthCache = {};\n\n\t\tpf.DPR = DPR || 1;\n\n\t\tunits.width = Math.max(window.innerWidth || 0, docElem.clientWidth);\n\t\tunits.height = Math.max(window.innerHeight || 0, docElem.clientHeight);\n\n\t\tunits.vw = units.width / 100;\n\t\tunits.vh = units.height / 100;\n\n\t\tevalId = [ units.height, units.width, DPR ].join(\"-\");\n\n\t\tunits.em = pf.getEmValue();\n\t\tunits.rem = units.em;\n\t}\n\n\tfunction chooseLowRes( lowerValue, higherValue, dprValue, isCached ) {\n\t\tvar bonusFactor, tooMuch, bonus, meanDensity;\n\n\t\t//experimental\n\t\tif (cfg.algorithm === \"saveData\" ){\n\t\t\tif ( lowerValue > 2.7 ) {\n\t\t\t\tmeanDensity = dprValue + 1;\n\t\t\t} else {\n\t\t\t\ttooMuch = higherValue - dprValue;\n\t\t\t\tbonusFactor = Math.pow(lowerValue - 0.6, 1.5);\n\n\t\t\t\tbonus = tooMuch * bonusFactor;\n\n\t\t\t\tif (isCached) {\n\t\t\t\t\tbonus += 0.1 * bonusFactor;\n\t\t\t\t}\n\n\t\t\t\tmeanDensity = lowerValue + bonus;\n\t\t\t}\n\t\t} else {\n\t\t\tmeanDensity = (dprValue > 1) ?\n\t\t\t\tMath.sqrt(lowerValue * higherValue) :\n\t\t\t\tlowerValue;\n\t\t}\n\n\t\treturn meanDensity > dprValue;\n\t}\n\n\tfunction applyBestCandidate( img ) {\n\t\tvar srcSetCandidates;\n\t\tvar matchingSet = pf.getSet( img );\n\t\tvar evaluated = false;\n\t\tif ( matchingSet !== \"pending\" ) {\n\t\t\tevaluated = evalId;\n\t\t\tif ( matchingSet ) {\n\t\t\t\tsrcSetCandidates = pf.setRes( matchingSet );\n\t\t\t\tpf.applySetCandidate( srcSetCandidates, img );\n\t\t\t}\n\t\t}\n\t\timg[ pf.ns ].evaled = evaluated;\n\t}\n\n\tfunction ascendingSort( a, b ) {\n\t\treturn a.res - b.res;\n\t}\n\n\tfunction setSrcToCur( img, src, set ) {\n\t\tvar candidate;\n\t\tif ( !set && src ) {\n\t\t\tset = img[ pf.ns ].sets;\n\t\t\tset = set && set[set.length - 1];\n\t\t}\n\n\t\tcandidate = getCandidateForSrc(src, set);\n\n\t\tif ( candidate ) {\n\t\t\tsrc = pf.makeUrl(src);\n\t\t\timg[ pf.ns ].curSrc = src;\n\t\t\timg[ pf.ns ].curCan = candidate;\n\n\t\t\tif ( !candidate.res ) {\n\t\t\t\tsetResolution( candidate, candidate.set.sizes );\n\t\t\t}\n\t\t}\n\t\treturn candidate;\n\t}\n\n\tfunction getCandidateForSrc( src, set ) {\n\t\tvar i, candidate, candidates;\n\t\tif ( src && set ) {\n\t\t\tcandidates = pf.parseSet( set );\n\t\t\tsrc = pf.makeUrl(src);\n\t\t\tfor ( i = 0; i < candidates.length; i++ ) {\n\t\t\t\tif ( src === pf.makeUrl(candidates[ i ].url) ) {\n\t\t\t\t\tcandidate = candidates[ i ];\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t\treturn candidate;\n\t}\n\n\tfunction getAllSourceElements( picture, candidates ) {\n\t\tvar i, len, source, srcset;\n\n\t\t// SPEC mismatch intended for size and perf:\n\t\t// actually only source elements preceding the img should be used\n\t\t// also note: don't use qsa here, because IE8 sometimes doesn't like source as the key part in a selector\n\t\tvar sources = picture.getElementsByTagName( \"source\" );\n\n\t\tfor ( i = 0, len = sources.length; i < len; i++ ) {\n\t\t\tsource = sources[ i ];\n\t\t\tsource[ pf.ns ] = true;\n\t\t\tsrcset = source.getAttribute( \"srcset\" );\n\n\t\t\t// if source does not have a srcset attribute, skip\n\t\t\tif ( srcset ) {\n\t\t\t\tcandidates.push( {\n\t\t\t\t\tsrcset: srcset,\n\t\t\t\t\tmedia: source.getAttribute( \"media\" ),\n\t\t\t\t\ttype: source.getAttribute( \"type\" ),\n\t\t\t\t\tsizes: source.getAttribute( \"sizes\" )\n\t\t\t\t} );\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Srcset Parser\n\t * By Alex Bell | MIT License\n\t *\n\t * @returns Array [{url: _, d: _, w: _, h:_, set:_(????)}, ...]\n\t *\n\t * Based super duper closely on the reference algorithm at:\n\t * https://html.spec.whatwg.org/multipage/embedded-content.html#parse-a-srcset-attribute\n\t */\n\n\t// 1. Let input be the value passed to this algorithm.\n\t// (TO-DO : Explain what \"set\" argument is here. Maybe choose a more\n\t// descriptive & more searchable name. Since passing the \"set\" in really has\n\t// nothing to do with parsing proper, I would prefer this assignment eventually\n\t// go in an external fn.)\n\tfunction parseSrcset(input, set) {\n\n\t\tfunction collectCharacters(regEx) {\n\t\t\tvar chars,\n\t\t\t match = regEx.exec(input.substring(pos));\n\t\t\tif (match) {\n\t\t\t\tchars = match[ 0 ];\n\t\t\t\tpos += chars.length;\n\t\t\t\treturn chars;\n\t\t\t}\n\t\t}\n\n\t\tvar inputLength = input.length,\n\t\t url,\n\t\t descriptors,\n\t\t currentDescriptor,\n\t\t state,\n\t\t c,\n\n\t\t // 2. Let position be a pointer into input, initially pointing at the start\n\t\t // of the string.\n\t\t pos = 0,\n\n\t\t // 3. Let candidates be an initially empty source set.\n\t\t candidates = [];\n\n\t\t/**\n\t\t* Adds descriptor properties to a candidate, pushes to the candidates array\n\t\t* @return undefined\n\t\t*/\n\t\t// (Declared outside of the while loop so that it's only created once.\n\t\t// (This fn is defined before it is used, in order to pass JSHINT.\n\t\t// Unfortunately this breaks the sequencing of the spec comments. :/ )\n\t\tfunction parseDescriptors() {\n\n\t\t\t// 9. Descriptor parser: Let error be no.\n\t\t\tvar pError = false,\n\n\t\t\t// 10. Let width be absent.\n\t\t\t// 11. Let density be absent.\n\t\t\t// 12. Let future-compat-h be absent. (We're implementing it now as h)\n\t\t\t w, d, h, i,\n\t\t\t candidate = {},\n\t\t\t desc, lastChar, value, intVal, floatVal;\n\n\t\t\t// 13. For each descriptor in descriptors, run the appropriate set of steps\n\t\t\t// from the following list:\n\t\t\tfor (i = 0 ; i < descriptors.length; i++) {\n\t\t\t\tdesc = descriptors[ i ];\n\n\t\t\t\tlastChar = desc[ desc.length - 1 ];\n\t\t\t\tvalue = desc.substring(0, desc.length - 1);\n\t\t\t\tintVal = parseInt(value, 10);\n\t\t\t\tfloatVal = parseFloat(value);\n\n\t\t\t\t// If the descriptor consists of a valid non-negative integer followed by\n\t\t\t\t// a U+0077 LATIN SMALL LETTER W character\n\t\t\t\tif (regexNonNegativeInteger.test(value) && (lastChar === \"w\")) {\n\n\t\t\t\t\t// If width and density are not both absent, then let error be yes.\n\t\t\t\t\tif (w || d) {pError = true;}\n\n\t\t\t\t\t// Apply the rules for parsing non-negative integers to the descriptor.\n\t\t\t\t\t// If the result is zero, let error be yes.\n\t\t\t\t\t// Otherwise, let width be the result.\n\t\t\t\t\tif (intVal === 0) {pError = true;} else {w = intVal;}\n\n\t\t\t\t// If the descriptor consists of a valid floating-point number followed by\n\t\t\t\t// a U+0078 LATIN SMALL LETTER X character\n\t\t\t\t} else if (regexFloatingPoint.test(value) && (lastChar === \"x\")) {\n\n\t\t\t\t\t// If width, density and future-compat-h are not all absent, then let error\n\t\t\t\t\t// be yes.\n\t\t\t\t\tif (w || d || h) {pError = true;}\n\n\t\t\t\t\t// Apply the rules for parsing floating-point number values to the descriptor.\n\t\t\t\t\t// If the result is less than zero, let error be yes. Otherwise, let density\n\t\t\t\t\t// be the result.\n\t\t\t\t\tif (floatVal < 0) {pError = true;} else {d = floatVal;}\n\n\t\t\t\t// If the descriptor consists of a valid non-negative integer followed by\n\t\t\t\t// a U+0068 LATIN SMALL LETTER H character\n\t\t\t\t} else if (regexNonNegativeInteger.test(value) && (lastChar === \"h\")) {\n\n\t\t\t\t\t// If height and density are not both absent, then let error be yes.\n\t\t\t\t\tif (h || d) {pError = true;}\n\n\t\t\t\t\t// Apply the rules for parsing non-negative integers to the descriptor.\n\t\t\t\t\t// If the result is zero, let error be yes. Otherwise, let future-compat-h\n\t\t\t\t\t// be the result.\n\t\t\t\t\tif (intVal === 0) {pError = true;} else {h = intVal;}\n\n\t\t\t\t// Anything else, Let error be yes.\n\t\t\t\t} else {pError = true;}\n\t\t\t} // (close step 13 for loop)\n\n\t\t\t// 15. If error is still no, then append a new image source to candidates whose\n\t\t\t// URL is url, associated with a width width if not absent and a pixel\n\t\t\t// density density if not absent. Otherwise, there is a parse error.\n\t\t\tif (!pError) {\n\t\t\t\tcandidate.url = url;\n\n\t\t\t\tif (w) { candidate.w = w;}\n\t\t\t\tif (d) { candidate.d = d;}\n\t\t\t\tif (h) { candidate.h = h;}\n\t\t\t\tif (!h && !d && !w) {candidate.d = 1;}\n\t\t\t\tif (candidate.d === 1) {set.has1x = true;}\n\t\t\t\tcandidate.set = set;\n\n\t\t\t\tcandidates.push(candidate);\n\t\t\t}\n\t\t} // (close parseDescriptors fn)\n\n\t\t/**\n\t\t* Tokenizes descriptor properties prior to parsing\n\t\t* Returns undefined.\n\t\t* (Again, this fn is defined before it is used, in order to pass JSHINT.\n\t\t* Unfortunately this breaks the logical sequencing of the spec comments. :/ )\n\t\t*/\n\t\tfunction tokenize() {\n\n\t\t\t// 8.1. Descriptor tokeniser: Skip whitespace\n\t\t\tcollectCharacters(regexLeadingSpaces);\n\n\t\t\t// 8.2. Let current descriptor be the empty string.\n\t\t\tcurrentDescriptor = \"\";\n\n\t\t\t// 8.3. Let state be in descriptor.\n\t\t\tstate = \"in descriptor\";\n\n\t\t\twhile (true) {\n\n\t\t\t\t// 8.4. Let c be the character at position.\n\t\t\t\tc = input.charAt(pos);\n\n\t\t\t\t// Do the following depending on the value of state.\n\t\t\t\t// For the purpose of this step, \"EOF\" is a special character representing\n\t\t\t\t// that position is past the end of input.\n\n\t\t\t\t// In descriptor\n\t\t\t\tif (state === \"in descriptor\") {\n\t\t\t\t\t// Do the following, depending on the value of c:\n\n\t\t\t\t // Space character\n\t\t\t\t // If current descriptor is not empty, append current descriptor to\n\t\t\t\t // descriptors and let current descriptor be the empty string.\n\t\t\t\t // Set state to after descriptor.\n\t\t\t\t\tif (isSpace(c)) {\n\t\t\t\t\t\tif (currentDescriptor) {\n\t\t\t\t\t\t\tdescriptors.push(currentDescriptor);\n\t\t\t\t\t\t\tcurrentDescriptor = \"\";\n\t\t\t\t\t\t\tstate = \"after descriptor\";\n\t\t\t\t\t\t}\n\n\t\t\t\t\t// U+002C COMMA (,)\n\t\t\t\t\t// Advance position to the next character in input. If current descriptor\n\t\t\t\t\t// is not empty, append current descriptor to descriptors. Jump to the step\n\t\t\t\t\t// labeled descriptor parser.\n\t\t\t\t\t} else if (c === \",\") {\n\t\t\t\t\t\tpos += 1;\n\t\t\t\t\t\tif (currentDescriptor) {\n\t\t\t\t\t\t\tdescriptors.push(currentDescriptor);\n\t\t\t\t\t\t}\n\t\t\t\t\t\tparseDescriptors();\n\t\t\t\t\t\treturn;\n\n\t\t\t\t\t// U+0028 LEFT PARENTHESIS (()\n\t\t\t\t\t// Append c to current descriptor. Set state to in parens.\n\t\t\t\t\t} else if (c === \"\\u0028\") {\n\t\t\t\t\t\tcurrentDescriptor = currentDescriptor + c;\n\t\t\t\t\t\tstate = \"in parens\";\n\n\t\t\t\t\t// EOF\n\t\t\t\t\t// If current descriptor is not empty, append current descriptor to\n\t\t\t\t\t// descriptors. Jump to the step labeled descriptor parser.\n\t\t\t\t\t} else if (c === \"\") {\n\t\t\t\t\t\tif (currentDescriptor) {\n\t\t\t\t\t\t\tdescriptors.push(currentDescriptor);\n\t\t\t\t\t\t}\n\t\t\t\t\t\tparseDescriptors();\n\t\t\t\t\t\treturn;\n\n\t\t\t\t\t// Anything else\n\t\t\t\t\t// Append c to current descriptor.\n\t\t\t\t\t} else {\n\t\t\t\t\t\tcurrentDescriptor = currentDescriptor + c;\n\t\t\t\t\t}\n\t\t\t\t// (end \"in descriptor\"\n\n\t\t\t\t// In parens\n\t\t\t\t} else if (state === \"in parens\") {\n\n\t\t\t\t\t// U+0029 RIGHT PARENTHESIS ())\n\t\t\t\t\t// Append c to current descriptor. Set state to in descriptor.\n\t\t\t\t\tif (c === \")\") {\n\t\t\t\t\t\tcurrentDescriptor = currentDescriptor + c;\n\t\t\t\t\t\tstate = \"in descriptor\";\n\n\t\t\t\t\t// EOF\n\t\t\t\t\t// Append current descriptor to descriptors. Jump to the step labeled\n\t\t\t\t\t// descriptor parser.\n\t\t\t\t\t} else if (c === \"\") {\n\t\t\t\t\t\tdescriptors.push(currentDescriptor);\n\t\t\t\t\t\tparseDescriptors();\n\t\t\t\t\t\treturn;\n\n\t\t\t\t\t// Anything else\n\t\t\t\t\t// Append c to current descriptor.\n\t\t\t\t\t} else {\n\t\t\t\t\t\tcurrentDescriptor = currentDescriptor + c;\n\t\t\t\t\t}\n\n\t\t\t\t// After descriptor\n\t\t\t\t} else if (state === \"after descriptor\") {\n\n\t\t\t\t\t// Do the following, depending on the value of c:\n\t\t\t\t\t// Space character: Stay in this state.\n\t\t\t\t\tif (isSpace(c)) {\n\n\t\t\t\t\t// EOF: Jump to the step labeled descriptor parser.\n\t\t\t\t\t} else if (c === \"\") {\n\t\t\t\t\t\tparseDescriptors();\n\t\t\t\t\t\treturn;\n\n\t\t\t\t\t// Anything else\n\t\t\t\t\t// Set state to in descriptor. Set position to the previous character in input.\n\t\t\t\t\t} else {\n\t\t\t\t\t\tstate = \"in descriptor\";\n\t\t\t\t\t\tpos -= 1;\n\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// Advance position to the next character in input.\n\t\t\t\tpos += 1;\n\n\t\t\t// Repeat this step.\n\t\t\t} // (close while true loop)\n\t\t}\n\n\t\t// 4. Splitting loop: Collect a sequence of characters that are space\n\t\t// characters or U+002C COMMA characters. If any U+002C COMMA characters\n\t\t// were collected, that is a parse error.\n\t\twhile (true) {\n\t\t\tcollectCharacters(regexLeadingCommasOrSpaces);\n\n\t\t\t// 5. If position is past the end of input, return candidates and abort these steps.\n\t\t\tif (pos >= inputLength) {\n\t\t\t\treturn candidates; // (we're done, this is the sole return path)\n\t\t\t}\n\n\t\t\t// 6. Collect a sequence of characters that are not space characters,\n\t\t\t// and let that be url.\n\t\t\turl = collectCharacters(regexLeadingNotSpaces);\n\n\t\t\t// 7. Let descriptors be a new empty list.\n\t\t\tdescriptors = [];\n\n\t\t\t// 8. If url ends with a U+002C COMMA character (,), follow these substeps:\n\t\t\t//\t\t(1). Remove all trailing U+002C COMMA characters from url. If this removed\n\t\t\t// more than one character, that is a parse error.\n\t\t\tif (url.slice(-1) === \",\") {\n\t\t\t\turl = url.replace(regexTrailingCommas, \"\");\n\t\t\t\t// (Jump ahead to step 9 to skip tokenization and just push the candidate).\n\t\t\t\tparseDescriptors();\n\n\t\t\t//\tOtherwise, follow these substeps:\n\t\t\t} else {\n\t\t\t\ttokenize();\n\t\t\t} // (close else of step 8)\n\n\t\t// 16. Return to the step labeled splitting loop.\n\t\t} // (Close of big while loop.)\n\t}\n\n\t/*\n\t * Sizes Parser\n\t *\n\t * By Alex Bell | MIT License\n\t *\n\t * Non-strict but accurate and lightweight JS Parser for the string value \n\t *\n\t * Reference algorithm at:\n\t * https://html.spec.whatwg.org/multipage/embedded-content.html#parse-a-sizes-attribute\n\t *\n\t * Most comments are copied in directly from the spec\n\t * (except for comments in parens).\n\t *\n\t * Grammar is:\n\t * = # [ , ]? | \n\t * = \n\t * = \n\t * http://www.w3.org/html/wg/drafts/html/master/embedded-content.html#attr-img-sizes\n\t *\n\t * E.g. \"(max-width: 30em) 100vw, (max-width: 50em) 70vw, 100vw\"\n\t * or \"(min-width: 30em), calc(30vw - 15px)\" or just \"30vw\"\n\t *\n\t * Returns the first valid with a media condition that evaluates to true,\n\t * or \"100vw\" if all valid media conditions evaluate to false.\n\t *\n\t */\n\n\tfunction parseSizes(strValue) {\n\n\t\t// (Percentage CSS lengths are not allowed in this case, to avoid confusion:\n\t\t// https://html.spec.whatwg.org/multipage/embedded-content.html#valid-source-size-list\n\t\t// CSS allows a single optional plus or minus sign:\n\t\t// http://www.w3.org/TR/CSS2/syndata.html#numbers\n\t\t// CSS is ASCII case-insensitive:\n\t\t// http://www.w3.org/TR/CSS2/syndata.html#characters )\n\t\t// Spec allows exponential notation for type:\n\t\t// http://dev.w3.org/csswg/css-values/#numbers\n\t\tvar regexCssLengthWithUnits = /^(?:[+-]?[0-9]+|[0-9]*\\.[0-9]+)(?:[eE][+-]?[0-9]+)?(?:ch|cm|em|ex|in|mm|pc|pt|px|rem|vh|vmin|vmax|vw)$/i;\n\n\t\t// (This is a quick and lenient test. Because of optional unlimited-depth internal\n\t\t// grouping parens and strict spacing rules, this could get very complicated.)\n\t\tvar regexCssCalc = /^calc\\((?:[0-9a-z \\.\\+\\-\\*\\/\\(\\)]+)\\)$/i;\n\n\t\tvar i;\n\t\tvar unparsedSizesList;\n\t\tvar unparsedSizesListLength;\n\t\tvar unparsedSize;\n\t\tvar lastComponentValue;\n\t\tvar size;\n\n\t\t// UTILITY FUNCTIONS\n\n\t\t// (Toy CSS parser. The goals here are:\n\t\t// 1) expansive test coverage without the weight of a full CSS parser.\n\t\t// 2) Avoiding regex wherever convenient.\n\t\t// Quick tests: http://jsfiddle.net/gtntL4gr/3/\n\t\t// Returns an array of arrays.)\n\t\tfunction parseComponentValues(str) {\n\t\t\tvar chrctr;\n\t\t\tvar component = \"\";\n\t\t\tvar componentArray = [];\n\t\t\tvar listArray = [];\n\t\t\tvar parenDepth = 0;\n\t\t\tvar pos = 0;\n\t\t\tvar inComment = false;\n\n\t\t\tfunction pushComponent() {\n\t\t\t\tif (component) {\n\t\t\t\t\tcomponentArray.push(component);\n\t\t\t\t\tcomponent = \"\";\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tfunction pushComponentArray() {\n\t\t\t\tif (componentArray[0]) {\n\t\t\t\t\tlistArray.push(componentArray);\n\t\t\t\t\tcomponentArray = [];\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// (Loop forwards from the beginning of the string.)\n\t\t\twhile (true) {\n\t\t\t\tchrctr = str.charAt(pos);\n\n\t\t\t\tif (chrctr === \"\") { // ( End of string reached.)\n\t\t\t\t\tpushComponent();\n\t\t\t\t\tpushComponentArray();\n\t\t\t\t\treturn listArray;\n\t\t\t\t} else if (inComment) {\n\t\t\t\t\tif ((chrctr === \"*\") && (str[pos + 1] === \"/\")) { // (At end of a comment.)\n\t\t\t\t\t\tinComment = false;\n\t\t\t\t\t\tpos += 2;\n\t\t\t\t\t\tpushComponent();\n\t\t\t\t\t\tcontinue;\n\t\t\t\t\t} else {\n\t\t\t\t\t\tpos += 1; // (Skip all characters inside comments.)\n\t\t\t\t\t\tcontinue;\n\t\t\t\t\t}\n\t\t\t\t} else if (isSpace(chrctr)) {\n\t\t\t\t\t// (If previous character in loop was also a space, or if\n\t\t\t\t\t// at the beginning of the string, do not add space char to\n\t\t\t\t\t// component.)\n\t\t\t\t\tif ( (str.charAt(pos - 1) && isSpace( str.charAt(pos - 1) ) ) || !component ) {\n\t\t\t\t\t\tpos += 1;\n\t\t\t\t\t\tcontinue;\n\t\t\t\t\t} else if (parenDepth === 0) {\n\t\t\t\t\t\tpushComponent();\n\t\t\t\t\t\tpos +=1;\n\t\t\t\t\t\tcontinue;\n\t\t\t\t\t} else {\n\t\t\t\t\t\t// (Replace any space character with a plain space for legibility.)\n\t\t\t\t\t\tchrctr = \" \";\n\t\t\t\t\t}\n\t\t\t\t} else if (chrctr === \"(\") {\n\t\t\t\t\tparenDepth += 1;\n\t\t\t\t} else if (chrctr === \")\") {\n\t\t\t\t\tparenDepth -= 1;\n\t\t\t\t} else if (chrctr === \",\") {\n\t\t\t\t\tpushComponent();\n\t\t\t\t\tpushComponentArray();\n\t\t\t\t\tpos += 1;\n\t\t\t\t\tcontinue;\n\t\t\t\t} else if ( (chrctr === \"/\") && (str.charAt(pos + 1) === \"*\") ) {\n\t\t\t\t\tinComment = true;\n\t\t\t\t\tpos += 2;\n\t\t\t\t\tcontinue;\n\t\t\t\t}\n\n\t\t\t\tcomponent = component + chrctr;\n\t\t\t\tpos += 1;\n\t\t\t}\n\t\t}\n\n\t\tfunction isValidNonNegativeSourceSizeValue(s) {\n\t\t\tif (regexCssLengthWithUnits.test(s) && (parseFloat(s) >= 0)) {return true;}\n\t\t\tif (regexCssCalc.test(s)) {return true;}\n\t\t\t// ( http://www.w3.org/TR/CSS2/syndata.html#numbers says:\n\t\t\t// \"-0 is equivalent to 0 and is not a negative number.\" which means that\n\t\t\t// unitless zero and unitless negative zero must be accepted as special cases.)\n\t\t\tif ((s === \"0\") || (s === \"-0\") || (s === \"+0\")) {return true;}\n\t\t\treturn false;\n\t\t}\n\n\t\t// When asked to parse a sizes attribute from an element, parse a\n\t\t// comma-separated list of component values from the value of the element's\n\t\t// sizes attribute (or the empty string, if the attribute is absent), and let\n\t\t// unparsed sizes list be the result.\n\t\t// http://dev.w3.org/csswg/css-syntax/#parse-comma-separated-list-of-component-values\n\n\t\tunparsedSizesList = parseComponentValues(strValue);\n\t\tunparsedSizesListLength = unparsedSizesList.length;\n\n\t\t// For each unparsed size in unparsed sizes list:\n\t\tfor (i = 0; i < unparsedSizesListLength; i++) {\n\t\t\tunparsedSize = unparsedSizesList[i];\n\n\t\t\t// 1. Remove all consecutive s from the end of unparsed size.\n\t\t\t// ( parseComponentValues() already omits spaces outside of parens. )\n\n\t\t\t// If unparsed size is now empty, that is a parse error; continue to the next\n\t\t\t// iteration of this algorithm.\n\t\t\t// ( parseComponentValues() won't push an empty array. )\n\n\t\t\t// 2. If the last component value in unparsed size is a valid non-negative\n\t\t\t// , let size be its value and remove the component value\n\t\t\t// from unparsed size. Any CSS function other than the calc() function is\n\t\t\t// invalid. Otherwise, there is a parse error; continue to the next iteration\n\t\t\t// of this algorithm.\n\t\t\t// http://dev.w3.org/csswg/css-syntax/#parse-component-value\n\t\t\tlastComponentValue = unparsedSize[unparsedSize.length - 1];\n\n\t\t\tif (isValidNonNegativeSourceSizeValue(lastComponentValue)) {\n\t\t\t\tsize = lastComponentValue;\n\t\t\t\tunparsedSize.pop();\n\t\t\t} else {\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\t// 3. Remove all consecutive s from the end of unparsed\n\t\t\t// size. If unparsed size is now empty, return size and exit this algorithm.\n\t\t\t// If this was not the last item in unparsed sizes list, that is a parse error.\n\t\t\tif (unparsedSize.length === 0) {\n\t\t\t\treturn size;\n\t\t\t}\n\n\t\t\t// 4. Parse the remaining component values in unparsed size as a\n\t\t\t// . If it does not parse correctly, or it does parse\n\t\t\t// correctly but the evaluates to false, continue to the\n\t\t\t// next iteration of this algorithm.\n\t\t\t// (Parsing all possible compound media conditions in JS is heavy, complicated,\n\t\t\t// and the payoff is unclear. Is there ever an situation where the\n\t\t\t// media condition parses incorrectly but still somehow evaluates to true?\n\t\t\t// Can we just rely on the browser/polyfill to do it?)\n\t\t\tunparsedSize = unparsedSize.join(\" \");\n\t\t\tif (!(pf.matchesMedia( unparsedSize ) ) ) {\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\t// 5. Return size and exit this algorithm.\n\t\t\treturn size;\n\t\t}\n\n\t\t// If the above algorithm exhausts unparsed sizes list without returning a\n\t\t// size value, return 100vw.\n\t\treturn \"100vw\";\n\t}\n\n\t// namespace\n\tpf.ns = (\"pf\" + new Date().getTime()).substr(0, 9);\n\n\t// srcset support test\n\tpf.supSrcset = \"srcset\" in image;\n\tpf.supSizes = \"sizes\" in image;\n\tpf.supPicture = !!window.HTMLPictureElement;\n\n\t// UC browser does claim to support srcset and picture, but not sizes,\n\t// this extended test reveals the browser does support nothing\n\tif (pf.supSrcset && pf.supPicture && !pf.supSizes) {\n\t\t(function(image2) {\n\t\t\timage.srcset = \"data:,a\";\n\t\t\timage2.src = \"data:,a\";\n\t\t\tpf.supSrcset = image.complete === image2.complete;\n\t\t\tpf.supPicture = pf.supSrcset && pf.supPicture;\n\t\t})(document.createElement(\"img\"));\n\t}\n\n\t// Safari9 has basic support for sizes, but does't expose the `sizes` idl attribute\n\tif (pf.supSrcset && !pf.supSizes) {\n\n\t\t(function() {\n\t\t\tvar width2 = \"data:image/gif;base64,R0lGODlhAgABAPAAAP///wAAACH5BAAAAAAALAAAAAACAAEAAAICBAoAOw==\";\n\t\t\tvar width1 = \"data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\";\n\t\t\tvar img = document.createElement(\"img\");\n\t\t\tvar test = function() {\n\t\t\t\tvar width = img.width;\n\n\t\t\t\tif (width === 2) {\n\t\t\t\t\tpf.supSizes = true;\n\t\t\t\t}\n\n\t\t\t\talwaysCheckWDescriptor = pf.supSrcset && !pf.supSizes;\n\n\t\t\t\tisSupportTestReady = true;\n\t\t\t\t// force async\n\t\t\t\tsetTimeout(picturefill);\n\t\t\t};\n\n\t\t\timg.onload = test;\n\t\t\timg.onerror = test;\n\t\t\timg.setAttribute(\"sizes\", \"9px\");\n\n\t\t\timg.srcset = width1 + \" 1w,\" + width2 + \" 9w\";\n\t\t\timg.src = width1;\n\t\t})();\n\n\t} else {\n\t\tisSupportTestReady = true;\n\t}\n\n\t// using pf.qsa instead of dom traversing does scale much better,\n\t// especially on sites mixing responsive and non-responsive images\n\tpf.selShort = \"picture>img,img[srcset]\";\n\tpf.sel = pf.selShort;\n\tpf.cfg = cfg;\n\n\t/**\n\t * Shortcut property for `devicePixelRatio` ( for easy overriding in tests )\n\t */\n\tpf.DPR = (DPR || 1 );\n\tpf.u = units;\n\n\t// container of supported mime types that one might need to qualify before using\n\tpf.types = types;\n\n\tpf.setSize = noop;\n\n\t/**\n\t * Gets a string and returns the absolute URL\n\t * @param src\n\t * @returns {String} absolute URL\n\t */\n\n\tpf.makeUrl = memoize(function(src) {\n\t\tanchor.href = src;\n\t\treturn anchor.href;\n\t});\n\n\t/**\n\t * Gets a DOM element or document and a selctor and returns the found matches\n\t * Can be extended with jQuery/Sizzle for IE7 support\n\t * @param context\n\t * @param sel\n\t * @returns {NodeList|Array}\n\t */\n\tpf.qsa = function(context, sel) {\n\t\treturn ( \"querySelector\" in context ) ? context.querySelectorAll(sel) : [];\n\t};\n\n\t/**\n\t * Shortcut method for matchMedia ( for easy overriding in tests )\n\t * wether native or pf.mMQ is used will be decided lazy on first call\n\t * @returns {boolean}\n\t */\n\tpf.matchesMedia = function() {\n\t\tif ( window.matchMedia && (matchMedia( \"(min-width: 0.1em)\" ) || {}).matches ) {\n\t\t\tpf.matchesMedia = function( media ) {\n\t\t\t\treturn !media || ( matchMedia( media ).matches );\n\t\t\t};\n\t\t} else {\n\t\t\tpf.matchesMedia = pf.mMQ;\n\t\t}\n\n\t\treturn pf.matchesMedia.apply( this, arguments );\n\t};\n\n\t/**\n\t * A simplified matchMedia implementation for IE8 and IE9\n\t * handles only min-width/max-width with px or em values\n\t * @param media\n\t * @returns {boolean}\n\t */\n\tpf.mMQ = function( media ) {\n\t\treturn media ? evalCSS(media) : true;\n\t};\n\n\t/**\n\t * Returns the calculated length in css pixel from the given sourceSizeValue\n\t * http://dev.w3.org/csswg/css-values-3/#length-value\n\t * intended Spec mismatches:\n\t * * Does not check for invalid use of CSS functions\n\t * * Does handle a computed length of 0 the same as a negative and therefore invalid value\n\t * @param sourceSizeValue\n\t * @returns {Number}\n\t */\n\tpf.calcLength = function( sourceSizeValue ) {\n\n\t\tvar value = evalCSS(sourceSizeValue, true) || false;\n\t\tif (value < 0) {\n\t\t\tvalue = false;\n\t\t}\n\n\t\treturn value;\n\t};\n\n\t/**\n\t * Takes a type string and checks if its supported\n\t */\n\n\tpf.supportsType = function( type ) {\n\t\treturn ( type ) ? types[ type ] : true;\n\t};\n\n\t/**\n\t * Parses a sourceSize into mediaCondition (media) and sourceSizeValue (length)\n\t * @param sourceSizeStr\n\t * @returns {*}\n\t */\n\tpf.parseSize = memoize(function( sourceSizeStr ) {\n\t\tvar match = ( sourceSizeStr || \"\" ).match(regSize);\n\t\treturn {\n\t\t\tmedia: match && match[1],\n\t\t\tlength: match && match[2]\n\t\t};\n\t});\n\n\tpf.parseSet = function( set ) {\n\t\tif ( !set.cands ) {\n\t\t\tset.cands = parseSrcset(set.srcset, set);\n\t\t}\n\t\treturn set.cands;\n\t};\n\n\t/**\n\t * returns 1em in css px for html/body default size\n\t * function taken from respondjs\n\t * @returns {*|number}\n\t */\n\tpf.getEmValue = function() {\n\t\tvar body;\n\t\tif ( !eminpx && (body = document.body) ) {\n\t\t\tvar div = document.createElement( \"div\" ),\n\t\t\t\toriginalHTMLCSS = docElem.style.cssText,\n\t\t\t\toriginalBodyCSS = body.style.cssText;\n\n\t\t\tdiv.style.cssText = baseStyle;\n\n\t\t\t// 1em in a media query is the value of the default font size of the browser\n\t\t\t// reset docElem and body to ensure the correct value is returned\n\t\t\tdocElem.style.cssText = fsCss;\n\t\t\tbody.style.cssText = fsCss;\n\n\t\t\tbody.appendChild( div );\n\t\t\teminpx = div.offsetWidth;\n\t\t\tbody.removeChild( div );\n\n\t\t\t//also update eminpx before returning\n\t\t\teminpx = parseFloat( eminpx, 10 );\n\n\t\t\t// restore the original values\n\t\t\tdocElem.style.cssText = originalHTMLCSS;\n\t\t\tbody.style.cssText = originalBodyCSS;\n\n\t\t}\n\t\treturn eminpx || 16;\n\t};\n\n\t/**\n\t * 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