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strict';\n\nvar timeline = document.querySelector('.timeline_cardHolder');\nvar timelineHolder = document.querySelector('.timeline_cardHolder ul');\nvar timelineYears = document.querySelector('.timeline_years');\nvar numberOfCards;\nvar cardWidth = document.querySelector('.timeline_card').offsetWidth;\n\nvar cards,\n    cardOffsets,\n    currentCard = 1,\n    years = [];\n\n// ForEach polyfill for IE\n(function () {\n\tif (typeof NodeList.prototype.forEach === 'function') return false;\n\tNodeList.prototype.forEach = Array.prototype.forEach;\n})();\n\n// Debounce\nfunction debounce(func, wait, immediate) {\n\tvar timeout;\n\treturn function () {\n\t\tvar context = this,\n\t\t    args = arguments;\n\t\tvar later = function later() {\n\t\t\ttimeout = null;\n\t\t\tif (!immediate) func.apply(context, args);\n\t\t};\n\t\tvar callNow = immediate && !timeout;\n\t\tclearTimeout(timeout);\n\t\ttimeout = setTimeout(later, wait);\n\t\tif (callNow) func.apply(context, args);\n\t};\n}\n\n// Ease out cubic\nfunction easeOutCubic(currentIteration, startValue, changeInValue, totalIterations) {\n\treturn changeInValue * (Math.pow(currentIteration / totalIterations - 1, 3) + 1) + startValue;\n}\n\nfunction setOffsets() {\n\tcards = [];\n\tcardOffsets = [];\n\ttimeline.querySelectorAll('.timeline_card').forEach(function (ele) {\n\t\tcards.push(ele);\n\t\tcardOffsets.push(ele.offsetLeft - window.innerWidth / 2 + cardWidth);\n\t});\n}\n\nfunction setActive(scrollEvent) {\n\tvar activeCard = document.querySelector('.timeline_card-active');\n\n\tif (typeof scrollEvent == 'undefined' && activeCard == null) {\n\t\tscrollEvent = 0;\n\t} else if (typeof scrollEvent == 'undefined' && activeCard != null) {\n\t\tscrollEvent = document.querySelector('.timeline_card-active').offsetLeft;\n\t}\n\n\tvar scrollLeft = scrollEvent + cardWidth / 2;\n\n\t// Gets what card is closest in position to the center!\n\tvar cardNumber = cardOffsets.reduce(function (prev, curr) {\n\t\treturn Math.abs(curr - scrollLeft) < Math.abs(prev - scrollLeft) ? curr : prev;\n\t});\n\n\tif (cardOffsets.indexOf(cardNumber) !== currentCard) {\n\t\tcards.forEach(function (card) {\n\t\t\tcard.classList.remove('timeline_card-active');\n\t\t\tcard.blur();\n\t\t});\n\t\tyears.forEach(function (year) {\n\t\t\tyear.classList.remove('timeline_years_decade_year-active');\n\t\t\tyear.blur();\n\t\t});\n\n\t\tdocument.querySelectorAll('.timeline_years_decade').forEach(function (decade) {\n\t\t\tdecade.classList.remove('timeline_years_decade-active');decade.blur();\n\t\t});\n\n\t\tcurrentCard = cardOffsets.indexOf(cardNumber);\n\n\t\tcards[currentCard].classList.add('timeline_card-active');\n\n\t\t// Add to parent node.\n\t\tyears[currentCard].parentNode.parentNode.classList.add('timeline_years_decade-active');\n\t\tyears[currentCard].classList.add('timeline_years_decade_year-active');\n\n\t\tif (window.innerWidth < 1025) {\n\t\t\tdocument.querySelector('.timeline_years_wrapper').scrollLeft = document.querySelector('.timeline_years_decade_year-active').offsetLeft - (window.innerWidth - 70) / 2;\n\t\t}\n\t}\n}\n\nfunction setUpTimeline() {\n\tvar isChrome = navigator.userAgent.indexOf('Chrome') > -1;\n\tvar isSafari = navigator.userAgent.indexOf('Safari') > -1;\n\n\tif (!(isChrome && isSafari)) {\n\t\tdocument.body.classList.add('safari');\n\t}\n\n\tcardWidth = document.querySelector('.timeline_card').offsetWidth;\n\n\tnumberOfCards = 0;\n\tdocument.querySelectorAll('.timeline_cardHolder li').forEach(function (e) {\n\t\tif (!e.style.display) {\n\t\t\tnumberOfCards++;\n\t\t}\n\t});\n\n\ttimelineHolder.style.width = cardWidth * numberOfCards + 'px';\n\n\tif (window.innerWidth < 1025) {\n\t\ttimelineYears.style.width = 70 * numberOfCards + 'px';\n\t} else {\n\t\ttimelineYears.style.width = 'auto';\n\t}\n\n\tsetOffsets();\n\tsetActive();\n\n\tcards[cards.length - 1].click();\n}\n\ndocument.querySelectorAll('.timeline_years_decade_year').forEach(function (year) {\n\tyears.push(year);\n});\n\ntimeline.addEventListener('scroll', function (event) {\n\tsetActive(event.target.scrollLeft);\n});\n\nvar newScrollPosition;\nvar start, momentum;\n\nvar currentIteration = 1;\n\nfunction animate() {\n\t// Animate timeline.\n\tif (currentIteration < 100) {\n\t\ttimeline.scrollLeft = easeOutCubic(currentIteration, start, newScrollPosition - start + momentum, 100);\n\t\tcurrentIteration++;\n\t}\n\twindow.requestAnimationFrame(animate);\n}\n\nwindow.requestAnimationFrame(animate);\n\ndocument.querySelectorAll('.timeline_years_decade').forEach(function (decade) {\n\tdecade.addEventListener('click', function (e) {\n\t\tif (this.classList.contains('timeline_years_decade') && !this.classList.contains('timeline_years_decade-active') && window.innerWidth > 1024) {\n\t\t\tdocument.querySelectorAll('.timeline_years_decade').forEach(function (decade) {\n\t\t\t\tdecade.classList.remove('timeline_years_decade-active');\n\t\t\t});\n\t\t\t[].slice.call(this.querySelectorAll('.timeline_years_decade_year')).every(function (el) {\n\t\t\t\tif (!el.style.display) {\n\t\t\t\t\tel.click();\n\t\t\t\t}\n\t\t\t\treturn el.style.display;\n\t\t\t});\n\t\t}\n\t\tthis.classList.add('timeline_years_decade-active');\n\t});\n});\n\ndocument.querySelectorAll('.timeline_years_decade_year').forEach(function (year) {\n\tyear.addEventListener('click', function () {\n\t\tmomentum = 0;\n\t\tstart = timeline.scrollLeft;\n\t\tnewScrollPosition = document.querySelectorAll('.timeline_card')[years.indexOf(this)].offsetLeft - window.innerWidth / 2 + cardWidth - cardWidth / 2;\n\t\tcurrentIteration = 0;\n\t});\n\tyear.addEventListener('keypress', function (event) {\n\t\tvar code = event.charCode || event.keyCode;\n\t\tif (code === 32 || code === 13) {\n\t\t\tmomentum = 0;\n\t\t\tstart = timeline.scrollLeft;\n\t\t\tnewScrollPosition = document.querySelectorAll('.timeline_card')[years.indexOf(this)].offsetLeft - window.innerWidth / 2 + cardWidth - cardWidth / 2;\n\t\t\tcurrentIteration = 0;\n\t\t}\n\t});\n});\n\ndocument.querySelectorAll('.timeline_card').forEach(function (card) {\n\tcard.addEventListener('click', function (e) {\n\t\tmomentum = 0;\n\t\tstart = timeline.scrollLeft;\n\t\tnewScrollPosition = e.currentTarget.offsetLeft - window.innerWidth / 2 + cardWidth - cardWidth / 2;\n\t\tcurrentIteration = 0;\n\t});\n\tcard.addEventListener('focus', function (e) {\n\t\tmomentum = 0;\n\t\tstart = timeline.scrollLeft;\n\t\tnewScrollPosition = e.currentTarget.offsetLeft - window.innerWidth / 2 + cardWidth - cardWidth / 2;\n\t\tcurrentIteration = 0;\n\t});\n});\n\ndocument.querySelectorAll('.timeline_checkBoxes input').forEach(function (ele) {\n\tele.addEventListener('change', function (e) {\n\t\tvar checkboxes = document.querySelectorAll('input[type=\"checkbox\"]');\n\t\tvar checkedOne = Array.prototype.slice.call(checkboxes).some(function (x) {\n\t\t\treturn x.checked;\n\t\t});\n\t\tif (!checkedOne) {\n\t\t\tthis.checked = true;\n\t\t\te.preventDefault();\n\t\t\treturn false;\n\t\t}\n\t\tvar checkboxValue = this.value;\n\t\tif (!this.checked) {\n\t\t\tdocument.querySelectorAll('[data-type=\\'' + checkboxValue + '\\']').forEach(function (e) {\n\t\t\t\te.style.display = 'none';\n\t\t\t});\n\t\t} else {\n\t\t\tdocument.querySelectorAll('[data-type=\\'' + checkboxValue + '\\']').forEach(function (e) {\n\t\t\t\te.style.display = '';\n\t\t\t});\n\t\t}\n\n\t\tsetUpTimeline();\n\n\t\tstart = timeline.scrollLeft;\n\t\tnewScrollPosition = cardOffsets[currentCard] - (window.innerWidth / 2 - cardWidth / 2);\n\t});\n});\n\nsetUpTimeline();\n\nvar debounced = debounce(function () {\n\tsetUpTimeline();\n}, 250);\n\nwindow.addEventListener('resize', debounced);"]}