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'data-dismiss',\n dataSpy = 'data-spy',\n dataRide = 'data-ride',\n \n // components\n stringAlert = 'Alert',\n stringButton = 'Button',\n stringCarousel = 'Carousel',\n stringCollapse = 'Collapse',\n stringDropdown = 'Dropdown',\n stringModal = 'Modal',\n stringPopover = 'Popover',\n stringScrollSpy = 'ScrollSpy',\n stringTab = 'Tab',\n stringTooltip = 'Tooltip',\n stringToast = 'Toast',\n \n // options DATA API\n dataAutohide = 'data-autohide',\n databackdrop = 'data-backdrop',\n dataKeyboard = 'data-keyboard',\n dataTarget = 'data-target',\n dataInterval = 'data-interval',\n dataHeight = 'data-height',\n dataPause = 'data-pause',\n dataTitle = 'data-title',\n dataOriginalTitle = 'data-original-title',\n dataDismissible = 'data-dismissible',\n dataTrigger = 'data-trigger',\n dataAnimation = 'data-animation',\n dataContainer = 'data-container',\n dataPlacement = 'data-placement',\n dataDelay = 'data-delay',\n \n // option keys\n backdrop = 'backdrop', keyboard = 'keyboard', delay = 'delay',\n content = 'content', target = 'target', currentTarget = 'currentTarget',\n interval = 'interval', pause = 'pause', animation = 'animation',\n placement = 'placement', container = 'container',\n \n // box model\n offsetTop = 'offsetTop', offsetBottom = 'offsetBottom',\n offsetLeft = 'offsetLeft',\n scrollTop = 'scrollTop', scrollLeft = 'scrollLeft',\n clientWidth = 'clientWidth', clientHeight = 'clientHeight',\n offsetWidth = 'offsetWidth', offsetHeight = 'offsetHeight',\n innerWidth = 'innerWidth', innerHeight = 'innerHeight',\n scrollHeight = 'scrollHeight', scrollWidth = 'scrollWidth',\n height = 'height',\n \n // aria\n ariaExpanded = 'aria-expanded',\n ariaHidden = 'aria-hidden',\n ariaSelected = 'aria-selected',\n \n // event names\n clickEvent = 'click',\n focusEvent = 'focus',\n hoverEvent = 'hover',\n keydownEvent = 'keydown',\n keyupEvent = 'keyup',\n resizeEvent = 'resize', // passive\n scrollEvent = 'scroll', // passive\n mouseHover = ('onmouseleave' in DOC) ? [ 'mouseenter', 'mouseleave'] : [ 'mouseover', 'mouseout' ],\n // touch since 2.0.26\n touchEvents = { start: 'touchstart', end: 'touchend', move:'touchmove' }, // passive\n // originalEvents\n showEvent = 'show',\n shownEvent = 'shown',\n hideEvent = 'hide',\n hiddenEvent = 'hidden',\n closeEvent = 'close',\n closedEvent = 'closed',\n slidEvent = 'slid',\n slideEvent = 'slide',\n changeEvent = 'change',\n \n // other\n getAttribute = 'getAttribute',\n setAttribute = 'setAttribute',\n hasAttribute = 'hasAttribute',\n createElement = 'createElement',\n appendChild = 'appendChild',\n innerHTML = 'innerHTML',\n getElementsByTagName = 'getElementsByTagName',\n preventDefault = 'preventDefault',\n getBoundingClientRect = 'getBoundingClientRect',\n querySelectorAll = 'querySelectorAll',\n getElementsByCLASSNAME = 'getElementsByClassName',\n getComputedStyle = 'getComputedStyle', \n \n indexOf = 'indexOf',\n parentNode = 'parentNode',\n length = 'length',\n toLowerCase = 'toLowerCase',\n Transition = 'Transition',\n Duration = 'Duration',\n Webkit = 'Webkit',\n style = 'style',\n push = 'push',\n tabindex = 'tabindex',\n contains = 'contains',\n \n active = 'active',\n showClass = 'show',\n collapsing = 'collapsing',\n disabled = 'disabled',\n loading = 'loading',\n left = 'left',\n right = 'right',\n top = 'top',\n bottom = 'bottom',\n \n // tooltip / popover\n tipPositions = /\\b(top|bottom|left|right)+/,\n \n // modal\n modalOverlay = 0,\n fixedTop = 'fixed-top',\n fixedBottom = 'fixed-bottom',\n \n // transitionEnd since 2.0.4\n supportTransitions = Webkit+Transition in HTML[style] || Transition[toLowerCase]() in HTML[style],\n transitionEndEvent = Webkit+Transition in HTML[style] ? Webkit[toLowerCase]()+Transition+'End' : Transition[toLowerCase]()+'end',\n transitionDuration = Webkit+Duration in HTML[style] ? Webkit[toLowerCase]()+Transition+Duration : Transition[toLowerCase]()+Duration,\n \n // set new focus element since 2.0.3\n setFocus = function(element){\n element.focus ? element.focus() : element.setActive();\n },\n \n // class manipulation, since 2.0.0 requires polyfill.js\n addClass = function(element,classNAME) {\n element.classList.add(classNAME);\n },\n removeClass = function(element,classNAME) {\n element.classList.remove(classNAME);\n },\n hasClass = function(element,classNAME){ // since 2.0.0\n return element.classList[contains](classNAME);\n },\n \n // selection methods\n getElementsByClassName = function(element,classNAME) { // returns Array\n return [].slice.call(element[getElementsByCLASSNAME]( classNAME ));\n },\n queryElement = function (selector, parent) {\n var lookUp = parent ? parent : DOC;\n return typeof selector === 'object' ? selector : lookUp.querySelector(selector);\n },\n getClosest = function (element, selector) { //element is the element and selector is for the closest parent element to find\n // source http://gomakethings.com/climbing-up-and-down-the-dom-tree-with-vanilla-javascript/\n var firstChar = selector.charAt(0), selectorSubstring = selector.substr(1);\n if ( firstChar === '.' ) {// If selector is a class\n for ( ; element && element !== DOC; element = element[parentNode] ) { // Get closest match\n if ( queryElement(selector,element[parentNode]) !== null && hasClass(element,selectorSubstring) ) { return element; }\n }\n } else if ( firstChar === '#' ) { // If selector is an ID\n for ( ; element && element !== DOC; element = element[parentNode] ) { // Get closest match\n if ( element.id === selectorSubstring ) { return element; }\n }\n }\n return false;\n },\n \n // event attach jQuery style / trigger since 1.2.0\n on = function (element, event, handler, options) {\n options = options || false;\n element.addEventListener(event, handler, options);\n },\n off = function(element, event, handler, options) {\n options = options || false;\n element.removeEventListener(event, handler, options);\n },\n one = function (element, event, handler, options) { // one since 2.0.4\n on(element, event, function handlerWrapper(e){\n handler(e);\n off(element, event, handlerWrapper, options);\n }, options);\n },\n // determine support for passive events\n supportPassive = (function(){\n // Test via a getter in the options object to see if the passive property is accessed\n var result = false;\n try {\n var opts = Object.defineProperty({}, 'passive', {\n get: function() {\n result = true;\n }\n });\n one(globalObject, 'testPassive', null, opts);\n } catch (e) {}\n \n return result;\n }()),\n // event options\n // https://github.com/WICG/EventListenerOptions/blob/gh-pages/explainer.md#feature-detection\n passiveHandler = supportPassive ? { passive: true } : false,\n // transitions\n getTransitionDurationFromElement = function(element) {\n var duration = supportTransitions ? globalObject[getComputedStyle](element)[transitionDuration] : 0;\n duration = parseFloat(duration);\n duration = typeof duration === 'number' && !isNaN(duration) ? duration * 1000 : 0;\n return duration; // we take a short offset to make sure we fire on the next frame after animation\n },\n emulateTransitionEnd = function(element,handler){ // emulateTransitionEnd since 2.0.4\n var called = 0, duration = getTransitionDurationFromElement(element);\n duration ? one(element, transitionEndEvent, function(e){ !called && handler(e), called = 1; })\n : setTimeout(function() { !called && handler(), called = 1; }, 17);\n },\n bootstrapCustomEvent = function (eventName, componentName, related) {\n var OriginalCustomEvent = new CustomEvent( eventName + '.bs.' + componentName);\n OriginalCustomEvent.relatedTarget = related;\n this.dispatchEvent(OriginalCustomEvent);\n },\n \n // tooltip / popover stuff\n getScroll = function() { // also Affix and ScrollSpy uses it\n return {\n y : globalObject.pageYOffset || HTML[scrollTop],\n x : globalObject.pageXOffset || HTML[scrollLeft]\n }\n },\n styleTip = function(link,element,position,parent) { // both popovers and tooltips (target,tooltip,placement,elementToAppendTo)\n var elementDimensions = { w : element[offsetWidth], h: element[offsetHeight] },\n windowWidth = (HTML[clientWidth] || DOC[body][clientWidth]),\n windowHeight = (HTML[clientHeight] || DOC[body][clientHeight]),\n rect = link[getBoundingClientRect](),\n scroll = parent === DOC[body] ? getScroll() : { x: parent[offsetLeft] + parent[scrollLeft], y: parent[offsetTop] + parent[scrollTop] },\n linkDimensions = { w: rect[right] - rect[left], h: rect[bottom] - rect[top] },\n isPopover = hasClass(element,'popover'),\n topPosition, leftPosition,\n \n arrow = queryElement('.arrow',element),\n arrowTop, arrowLeft, arrowWidth, arrowHeight,\n \n halfTopExceed = rect[top] + linkDimensions.h/2 - elementDimensions.h/2 < 0,\n halfLeftExceed = rect[left] + linkDimensions.w/2 - elementDimensions.w/2 < 0,\n halfRightExceed = rect[left] + elementDimensions.w/2 + linkDimensions.w/2 >= windowWidth,\n halfBottomExceed = rect[top] + elementDimensions.h/2 + linkDimensions.h/2 >= windowHeight,\n topExceed = rect[top] - elementDimensions.h < 0,\n leftExceed = rect[left] - elementDimensions.w < 0,\n bottomExceed = rect[top] + elementDimensions.h + linkDimensions.h >= windowHeight,\n rightExceed = rect[left] + elementDimensions.w + linkDimensions.w >= windowWidth;\n \n // recompute position\n position = (position === left || position === right) && leftExceed && rightExceed ? top : position; // first, when both left and right limits are exceeded, we fall back to top|bottom\n position = position === top && topExceed ? bottom : position;\n position = position === bottom && bottomExceed ? top : position;\n position = position === left && leftExceed ? right : position;\n position = position === right && rightExceed ? left : position;\n \n // update tooltip/popover class\n element.className[indexOf](position) === -1 && (element.className = element.className.replace(tipPositions,position));\n \n // we check the computed width & height and update here\n arrowWidth = arrow[offsetWidth]; arrowHeight = arrow[offsetHeight];\n \n // apply styling to tooltip or popover\n if ( position === left || position === right ) { // secondary|side positions\n if ( position === left ) { // LEFT\n leftPosition = rect[left] + scroll.x - elementDimensions.w - ( isPopover ? arrowWidth : 0 );\n } else { // RIGHT\n leftPosition = rect[left] + scroll.x + linkDimensions.w;\n }\n \n // adjust top and arrow\n if (halfTopExceed) {\n topPosition = rect[top] + scroll.y;\n arrowTop = linkDimensions.h/2 - arrowWidth;\n } else if (halfBottomExceed) {\n topPosition = rect[top] + scroll.y - elementDimensions.h + linkDimensions.h;\n arrowTop = elementDimensions.h - linkDimensions.h/2 - arrowWidth;\n } else {\n topPosition = rect[top] + scroll.y - elementDimensions.h/2 + linkDimensions.h/2;\n arrowTop = elementDimensions.h/2 - (isPopover ? arrowHeight*0.9 : arrowHeight/2);\n }\n } else if ( position === top || position === bottom ) { // primary|vertical positions\n if ( position === top) { // TOP\n topPosition = rect[top] + scroll.y - elementDimensions.h - ( isPopover ? arrowHeight : 0 );\n } else { // BOTTOM\n topPosition = rect[top] + scroll.y + linkDimensions.h;\n }\n // adjust left | right and also the arrow\n if (halfLeftExceed) {\n leftPosition = 0;\n arrowLeft = rect[left] + linkDimensions.w/2 - arrowWidth;\n } else if (halfRightExceed) {\n leftPosition = windowWidth - elementDimensions.w*1.01;\n arrowLeft = elementDimensions.w - ( windowWidth - rect[left] ) + linkDimensions.w/2 - arrowWidth/2;\n } else {\n leftPosition = rect[left] + scroll.x - elementDimensions.w/2 + linkDimensions.w/2;\n arrowLeft = elementDimensions.w/2 - ( isPopover ? arrowWidth : arrowWidth/2 );\n }\n }\n \n // apply style to tooltip/popover and its arrow\n element[style][top] = topPosition + 'px';\n element[style][left] = leftPosition + 'px';\n \n arrowTop && (arrow[style][top] = arrowTop + 'px');\n arrowLeft && (arrow[style][left] = arrowLeft + 'px');\n };\n \n BSN.version = '2.0.27';\n \n /* Native Javascript for Bootstrap 4 | Tab\n -----------------------------------------*/\n \n // TAB DEFINITION\n // ==============\n var Tab = function( element, options ) {\n \n // initialization element\n element = queryElement(element);\n \n // DATA API\n var heightData = element[getAttribute](dataHeight),\n \n // strings\n component = 'tab', height = 'height', float = 'float', isAnimating = 'isAnimating';\n \n // set options\n options = options || {};\n this[height] = supportTransitions ? (options[height] || heightData === 'true') : false;\n \n // bind, event targets\n var self = this, next,\n tabs = getClosest(element,'.nav'),\n tabsContentContainer = false,\n dropdown = tabs && queryElement('.dropdown-toggle',tabs),\n activeTab, activeContent, nextContent, containerHeight, equalContents, nextHeight,\n \n // trigger\n triggerEnd = function(){\n tabsContentContainer[style][height] = '';\n removeClass(tabsContentContainer,collapsing);\n tabs[isAnimating] = false;\n },\n triggerShow = function() {\n if (tabsContentContainer) { // height animation\n if ( equalContents ) {\n triggerEnd();\n } else {\n setTimeout(function(){ // enables height animation\n tabsContentContainer[style][height] = nextHeight + 'px'; // height animation\n tabsContentContainer[offsetWidth];\n emulateTransitionEnd(tabsContentContainer, triggerEnd);\n },50);\n }\n } else {\n tabs[isAnimating] = false; \n }\n bootstrapCustomEvent.call(next, shownEvent, component, activeTab);\n },\n triggerHide = function() {\n if (tabsContentContainer) {\n activeContent[style][float] = left;\n nextContent[style][float] = left; \n containerHeight = activeContent[scrollHeight];\n }\n \n addClass(nextContent,active);\n bootstrapCustomEvent.call(next, showEvent, component, activeTab);\n \n removeClass(activeContent,active);\n bootstrapCustomEvent.call(activeTab, hiddenEvent, component, next);\n \n if (tabsContentContainer) {\n nextHeight = nextContent[scrollHeight];\n equalContents = nextHeight === containerHeight;\n addClass(tabsContentContainer,collapsing);\n tabsContentContainer[style][height] = containerHeight + 'px'; // height animation\n tabsContentContainer[offsetHeight];\n activeContent[style][float] = '';\n nextContent[style][float] = '';\n }\n \n if ( hasClass(nextContent, 'fade') ) {\n setTimeout(function(){\n addClass(nextContent,showClass);\n emulateTransitionEnd(nextContent,triggerShow);\n },20);\n } else { triggerShow(); } \n };\n \n if (!tabs) return; // invalidate\n \n // set default animation state\n tabs[isAnimating] = false; \n \n // private methods\n var getActiveTab = function() {\n var activeTabs = getElementsByClassName(tabs,active), activeTab;\n if ( activeTabs[length] === 1 && !hasClass(activeTabs[0][parentNode],'dropdown') ) {\n activeTab = activeTabs[0];\n } else if ( activeTabs[length] > 1 ) {\n activeTab = activeTabs[activeTabs[length]-1];\n }\n return activeTab;\n },\n getActiveContent = function() {\n return queryElement(getActiveTab()[getAttribute]('href'));\n },\n // handler \n clickHandler = function(e) {\n e[preventDefault]();\n next = e[currentTarget];\n !tabs[isAnimating] && !hasClass(next,active) && self.show();\n };\n \n // public method\n this.show = function() { // the tab we clicked is now the next tab\n next = next || element;\n nextContent = queryElement(next[getAttribute]('href')); //this is the actual object, the next tab content to activate\n activeTab = getActiveTab(); \n activeContent = getActiveContent();\n \n tabs[isAnimating] = true;\n removeClass(activeTab,active);\n activeTab[setAttribute](ariaSelected,'false');\n addClass(next,active);\n next[setAttribute](ariaSelected,'true'); \n \n if ( dropdown ) {\n if ( !hasClass(element[parentNode],'dropdown-menu') ) {\n if (hasClass(dropdown,active)) removeClass(dropdown,active);\n } else {\n if (!hasClass(dropdown,active)) addClass(dropdown,active);\n }\n }\n \n bootstrapCustomEvent.call(activeTab, hideEvent, component, next);\n \n if (hasClass(activeContent, 'fade')) {\n removeClass(activeContent,showClass);\n emulateTransitionEnd(activeContent, triggerHide);\n } else { triggerHide(); }\n };\n \n // init\n if ( !(stringTab in element) ) { // prevent adding event handlers twice\n on(element, clickEvent, clickHandler);\n }\n if (self[height]) { tabsContentContainer = getActiveContent()[parentNode]; }\n element[stringTab] = self;\n };\n \n // TAB DATA API\n // ============\n supports[push]( [ stringTab, Tab, '['+dataToggle+'=\"tab\"]' ] );\n \n \n /* Native Javascript for Bootstrap 4 | Tooltip\n ---------------------------------------------*/\n \n // TOOLTIP DEFINITION\n // ==================\n var Tooltip = function( element,options ) {\n \n // initialization element\n element = queryElement(element);\n \n // set options\n options = options || {};\n \n // DATA API\n var animationData = element[getAttribute](dataAnimation),\n placementData = element[getAttribute](dataPlacement),\n delayData = element[getAttribute](dataDelay),\n containerData = element[getAttribute](dataContainer),\n \n // strings\n component = 'tooltip',\n classString = 'class',\n title = 'title',\n fade = 'fade',\n div = 'div',\n \n // check container\n containerElement = queryElement(options[container]),\n containerDataElement = queryElement(containerData), \n \n // maybe the element is inside a modal\n modal = getClosest(element,'.modal'),\n \n // maybe the element is inside a fixed navbar\n navbarFixedTop = getClosest(element,'.'+fixedTop),\n navbarFixedBottom = getClosest(element,'.'+fixedBottom);\n \n // set instance options\n this[animation] = options[animation] && options[animation] !== fade ? options[animation] : animationData || fade;\n this[placement] = options[placement] ? options[placement] : placementData || top;\n this[delay] = parseInt(options[delay] || delayData) || 200;\n this[container] = containerElement ? containerElement \n : containerDataElement ? containerDataElement\n : navbarFixedTop ? navbarFixedTop\n : navbarFixedBottom ? navbarFixedBottom\n : modal ? modal : DOC[body];\n \n // bind, event targets, title and constants\n var self = this, timer = 0, placementSetting = this[placement], tooltip = null,\n titleString = element[getAttribute](title) || element[getAttribute](dataTitle) || element[getAttribute](dataOriginalTitle);\n \n if ( !titleString || titleString == \"\" ) return; // invalidate\n \n // private methods\n var removeToolTip = function() {\n self[container].removeChild(tooltip);\n tooltip = null; timer = null;\n },\n createToolTip = function() {\n titleString = element[getAttribute](title) || element[getAttribute](dataTitle) || element[getAttribute](dataOriginalTitle); // read the title again\n \n if ( titleString && titleString !== \"\" ) { // invalidate, maybe markup changed\n tooltip = DOC[createElement](div);\n tooltip[setAttribute]('role',component);\n tooltip[style][left] = '0';\n tooltip[style][top] = '0'; \n \n // tooltip arrow\n var tooltipArrow = DOC[createElement](div);\n tooltipArrow[setAttribute](classString,'arrow');\n tooltip[appendChild](tooltipArrow);\n \n var tooltipInner = DOC[createElement](div);\n tooltipInner[setAttribute](classString,component+'-inner');\n tooltip[appendChild](tooltipInner);\n tooltipInner[innerHTML] = titleString;\n \n self[container][appendChild](tooltip);\n tooltip[setAttribute](classString, component + ' bs-' + component+'-'+placementSetting + ' ' + self[animation]);\n }\n },\n updateTooltip = function () {\n styleTip(element, tooltip, placementSetting, self[container]);\n },\n showTooltip = function () {\n !hasClass(tooltip,showClass) && ( addClass(tooltip,showClass) );\n },\n // triggers\n showTrigger = function() {\n on( globalObject, resizeEvent, self.hide, passiveHandler );\n bootstrapCustomEvent.call(element, shownEvent, component);\n },\n hideTrigger = function() {\n off( globalObject, resizeEvent, self.hide, passiveHandler );\n removeToolTip();\n bootstrapCustomEvent.call(element, hiddenEvent, component);\n };\n \n // public methods\n this.show = function() {\n clearTimeout(timer);\n timer = setTimeout( function() {\n if (tooltip === null) {\n placementSetting = self[placement]; // we reset placement in all cases\n // if(createToolTip() == false) return;\n if(createToolTip() !== false) {\n updateTooltip();\n showTooltip();\n bootstrapCustomEvent.call(element, showEvent, component);\n !!self[animation] ? emulateTransitionEnd(tooltip, showTrigger) : showTrigger(); \n }\n }\n }, 20 );\n };\n this.hide = function() {\n clearTimeout(timer);\n timer = setTimeout( function() {\n if (tooltip && hasClass(tooltip,showClass)) {\n bootstrapCustomEvent.call(element, hideEvent, component);\n removeClass(tooltip,showClass);\n !!self[animation] ? emulateTransitionEnd(tooltip, hideTrigger) : hideTrigger();\n }\n }, self[delay]);\n };\n this.toggle = function() {\n if (!tooltip) { self.show(); } \n else { self.hide(); }\n };\n \n // init\n if ( !(stringTooltip in element) ) { // prevent adding event handlers twice\n element[setAttribute](dataOriginalTitle,titleString);\n element.removeAttribute(title);\n on(element, mouseHover[0], self.show);\n on(element, mouseHover[1], self.hide);\n }\n element[stringTooltip] = self;\n };\n \n // TOOLTIP DATA API\n // =================\n supports[push]( [ stringTooltip, Tooltip, '['+dataToggle+'=\"tooltip\"]' ] );\n \n \n \r\n /* Native Javascript for Bootstrap | Initialize Data API\r\n --------------------------------------------------------*/\r\n var initializeDataAPI = function( constructor, collection ){\r\n for (var i=0, l=collection[length]; i