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\tvar installedModules = {};\n/******/\n/******/ \t// The require function\n/******/ \tfunction __webpack_require__(moduleId) {\n/******/\n/******/ \t\t// Check if module is in cache\n/******/ \t\tif(installedModules[moduleId])\n/******/ \t\t\treturn installedModules[moduleId].exports;\n/******/\n/******/ \t\t// Create a new module (and put it into the cache)\n/******/ \t\tvar module = installedModules[moduleId] = {\n/******/ \t\t\texports: {},\n/******/ \t\t\tid: moduleId,\n/******/ \t\t\tloaded: false\n/******/ \t\t};\n/******/\n/******/ \t\t// Execute the module function\n/******/ \t\tmodules[moduleId].call(module.exports, module, module.exports, __webpack_require__);\n/******/\n/******/ \t\t// Flag the module as loaded\n/******/ \t\tmodule.loaded = true;\n/******/\n/******/ \t\t// Return the exports of the module\n/******/ \t\treturn module.exports;\n/******/ \t}\n/******/\n/******/\n/******/ \t// expose the modules object (__webpack_modules__)\n/******/ \t__webpack_require__.m = 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strict';\n\t\n\texports.VISIBILITYCHANGE = 'visibilityChange';\n\texports.ENTERVIEWPORT = 'enterViewport';\n\texports.FULLYENTERVIEWPORT = 'fullyEnterViewport';\n\texports.EXITVIEWPORT = 'exitViewport';\n\texports.PARTIALLYEXITVIEWPORT = 'partiallyExitViewport';\n\texports.LOCATIONCHANGE = 'locationChange';\n\texports.STATECHANGE = 'stateChange';\n\t\n\texports.eventTypes = [exports.VISIBILITYCHANGE, exports.ENTERVIEWPORT, exports.FULLYENTERVIEWPORT, exports.EXITVIEWPORT, exports.PARTIALLYEXITVIEWPORT, exports.LOCATIONCHANGE, exports.STATECHANGE];\n\t\n\texports.isOnServer = typeof window === 'undefined';\n\texports.isInBrowser = !exports.isOnServer;\n\t\n\texports.defaultOffsets = { top: 0, bottom: 0 };\n\n/***/ },\n/* 2 */\n/***/ function(module, exports, __webpack_require__) {\n\n\t'use strict';\n\t\n\tfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\t\n\tvar _require = 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0;\n\t\t}\n\t\tif (element === document.body) {\n\t\t\treturn window.pageYOffset || document.documentElement && document.documentElement.scrollTop || document.body.scrollTop;\n\t\t} else {\n\t\t\treturn element.scrollTop;\n\t\t}\n\t}\n\t\n\tvar ScrollMonitorContainer = function () {\n\t\tfunction ScrollMonitorContainer(item, parentWatcher) {\n\t\t\t_classCallCheck(this, ScrollMonitorContainer);\n\t\n\t\t\tvar self = this;\n\t\n\t\t\tthis.item = item;\n\t\t\tthis.watchers = [];\n\t\t\tthis.viewportTop = null;\n\t\t\tthis.viewportBottom = null;\n\t\t\tthis.documentHeight = getContentHeight(item);\n\t\t\tthis.viewportHeight = getViewportHeight(item);\n\t\t\tthis.DOMListener = function () {\n\t\t\t\tScrollMonitorContainer.prototype.DOMListener.apply(self, arguments);\n\t\t\t};\n\t\t\tthis.eventTypes = eventTypes;\n\t\n\t\t\tif (parentWatcher) {\n\t\t\t\tthis.containerWatcher = parentWatcher.create(item);\n\t\t\t}\n\t\n\t\t\tvar previousDocumentHeight;\n\t\n\t\t\tvar calculateViewportI;\n\t\t\tfunction calculateViewport() {\n\t\t\t\tself.viewportTop = scrollTop(item);\n\t\t\t\tself.viewportBottom = self.viewportTop + self.viewportHeight;\n\t\t\t\tself.documentHeight = getContentHeight(item);\n\t\t\t\tif (self.documentHeight !== previousDocumentHeight) {\n\t\t\t\t\tcalculateViewportI = self.watchers.length;\n\t\t\t\t\twhile (calculateViewportI--) {\n\t\t\t\t\t\tself.watchers[calculateViewportI].recalculateLocation();\n\t\t\t\t\t}\n\t\t\t\t\tpreviousDocumentHeight = self.documentHeight;\n\t\t\t\t}\n\t\t\t}\n\t\n\t\t\tvar updateAndTriggerWatchersI;\n\t\t\tfunction updateAndTriggerWatchers() {\n\t\t\t\t// update all watchers then trigger the events so one can rely on another being up to date.\n\t\t\t\tupdateAndTriggerWatchersI = self.watchers.length;\n\t\t\t\twhile (updateAndTriggerWatchersI--) {\n\t\t\t\t\tself.watchers[updateAndTriggerWatchersI].update();\n\t\t\t\t}\n\t\n\t\t\t\tupdateAndTriggerWatchersI = self.watchers.length;\n\t\t\t\twhile (updateAndTriggerWatchersI--) {\n\t\t\t\t\tself.watchers[updateAndTriggerWatchersI].triggerCallbacks();\n\t\t\t\t}\n\t\t\t}\n\t\n\t\t\tthis.update = function () {\n\t\t\t\tcalculateViewport();\n\t\t\t\tupdateAndTriggerWatchers();\n\t\t\t};\n\t\t\tthis.recalculateLocations = function () {\n\t\t\t\tthis.documentHeight = 0;\n\t\t\t\tthis.update();\n\t\t\t};\n\t\t}\n\t\n\t\tScrollMonitorContainer.prototype.listenToDOM = function listenToDOM() {\n\t\t\tif (isInBrowser) {\n\t\t\t\tif (window.addEventListener) {\n\t\t\t\t\tif (this.item === document.body) {\n\t\t\t\t\t\twindow.addEventListener('scroll', this.DOMListener);\n\t\t\t\t\t} else {\n\t\t\t\t\t\tthis.item.addEventListener('scroll', this.DOMListener);\n\t\t\t\t\t}\n\t\t\t\t\twindow.addEventListener('resize', this.DOMListener);\n\t\t\t\t} else {\n\t\t\t\t\t// Old IE support\n\t\t\t\t\tif (this.item === document.body) {\n\t\t\t\t\t\twindow.attachEvent('onscroll', this.DOMListener);\n\t\t\t\t\t} else {\n\t\t\t\t\t\tthis.item.attachEvent('onscroll', this.DOMListener);\n\t\t\t\t\t}\n\t\t\t\t\twindow.attachEvent('onresize', this.DOMListener);\n\t\t\t\t}\n\t\t\t\tthis.destroy = function () {\n\t\t\t\t\tif (window.addEventListener) {\n\t\t\t\t\t\tif (this.item === document.body) {\n\t\t\t\t\t\t\twindow.removeEventListener('scroll', this.DOMListener);\n\t\t\t\t\t\t\tthis.containerWatcher.destroy();\n\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\tthis.item.removeEventListener('scroll', this.DOMListener);\n\t\t\t\t\t\t}\n\t\t\t\t\t\twindow.removeEventListener('resize', this.DOMListener);\n\t\t\t\t\t} else {\n\t\t\t\t\t\t// Old IE support\n\t\t\t\t\t\tif (this.item === document.body) {\n\t\t\t\t\t\t\twindow.detachEvent('onscroll', this.DOMListener);\n\t\t\t\t\t\t\tthis.containerWatcher.destroy();\n\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\tthis.item.detachEvent('onscroll', this.DOMListener);\n\t\t\t\t\t\t}\n\t\t\t\t\t\twindow.detachEvent('onresize', this.DOMListener);\n\t\t\t\t\t}\n\t\t\t\t};\n\t\t\t}\n\t\t};\n\t\n\t\tScrollMonitorContainer.prototype.destroy = function destroy() {\n\t\t\t// noop, override for your own purposes.\n\t\t\t// in listenToDOM, for example.\n\t\t};\n\t\n\t\tScrollMonitorContainer.prototype.DOMListener = function DOMListener(event) {\n\t\t\t//alert('got scroll');\n\t\t\tthis.setStateFromDOM(event);\n\t\t};\n\t\n\t\tScrollMonitorContainer.prototype.setStateFromDOM = function setStateFromDOM(event) {\n\t\t\tvar viewportTop = scrollTop(this.item);\n\t\t\tvar viewportHeight = getViewportHeight(this.item);\n\t\t\tvar contentHeight = getContentHeight(this.item);\n\t\n\t\t\tthis.setState(viewportTop, viewportHeight, contentHeight, event);\n\t\t};\n\t\n\t\tScrollMonitorContainer.prototype.setState = function setState(newViewportTop, newViewportHeight, newContentHeight, event) {\n\t\t\tvar needsRecalcuate = newViewportHeight !== this.viewportHeight || newContentHeight !== this.contentHeight;\n\t\n\t\t\tthis.latestEvent = event;\n\t\t\tthis.viewportTop = newViewportTop;\n\t\t\tthis.viewportHeight = newViewportHeight;\n\t\t\tthis.viewportBottom = newViewportTop + newViewportHeight;\n\t\t\tthis.contentHeight = newContentHeight;\n\t\n\t\t\tif (needsRecalcuate) {\n\t\t\t\tvar i = this.watchers.length;\n\t\t\t\twhile (i--) {\n\t\t\t\t\tthis.watchers[i].recalculateLocation();\n\t\t\t\t}\n\t\t\t}\n\t\t\tthis.updateAndTriggerWatchers(event);\n\t\t};\n\t\n\t\tScrollMonitorContainer.prototype.updateAndTriggerWatchers = function updateAndTriggerWatchers(event) {\n\t\t\tvar i = this.watchers.length;\n\t\t\twhile (i--) {\n\t\t\t\tthis.watchers[i].update();\n\t\t\t}\n\t\n\t\t\ti = this.watchers.length;\n\t\t\twhile (i--) {\n\t\t\t\tthis.watchers[i].triggerCallbacks(event);\n\t\t\t}\n\t\t};\n\t\n\t\tScrollMonitorContainer.prototype.createCustomContainer = function createCustomContainer() {\n\t\t\treturn new ScrollMonitorContainer();\n\t\t};\n\t\n\t\tScrollMonitorContainer.prototype.createContainer = function createContainer(item) {\n\t\t\tif (typeof item === 'string') {\n\t\t\t\titem = document.querySelector(item);\n\t\t\t} else if (item && item.length > 0) {\n\t\t\t\titem = item[0];\n\t\t\t}\n\t\t\tvar container = new ScrollMonitorContainer(item, this);\n\t\t\tcontainer.setStateFromDOM();\n\t\t\tcontainer.listenToDOM();\n\t\t\treturn container;\n\t\t};\n\t\n\t\tScrollMonitorContainer.prototype.create = function create(item, offsets) {\n\t\t\tif (typeof item === 'string') {\n\t\t\t\titem = document.querySelector(item);\n\t\t\t} else if (item && item.length > 0) {\n\t\t\t\titem = item[0];\n\t\t\t}\n\t\t\tvar watcher = new Watcher(this, item, offsets);\n\t\t\tthis.watchers.push(watcher);\n\t\t\treturn watcher;\n\t\t};\n\t\n\t\tScrollMonitorContainer.prototype.beget = function beget(item, offsets) {\n\t\t\treturn this.create(item, offsets);\n\t\t};\n\t\n\t\treturn ScrollMonitorContainer;\n\t}();\n\t\n\tmodule.exports = ScrollMonitorContainer;\n\n/***/ },\n/* 3 */\n/***/ function(module, exports, __webpack_require__) {\n\n\t'use strict';\n\t\n\tvar _require = __webpack_require__(1),\n\t    VISIBILITYCHANGE = _require.VISIBILITYCHANGE,\n\t    ENTERVIEWPORT = _require.ENTERVIEWPORT,\n\t    FULLYENTERVIEWPORT = _require.FULLYENTERVIEWPORT,\n\t    EXITVIEWPORT = _require.EXITVIEWPORT,\n\t    PARTIALLYEXITVIEWPORT = _require.PARTIALLYEXITVIEWPORT,\n\t    LOCATIONCHANGE = _require.LOCATIONCHANGE,\n\t    STATECHANGE = _require.STATECHANGE,\n\t    eventTypes = _require.eventTypes,\n\t    defaultOffsets = _require.defaultOffsets;\n\t\n\tfunction ElementWatcher(containerWatcher, watchItem, offsets) {\n\t\tvar self = this;\n\t\n\t\tthis.watchItem = watchItem;\n\t\tthis.container = containerWatcher;\n\t\n\t\tif (!offsets) {\n\t\t\tthis.offsets = defaultOffsets;\n\t\t} else if (offsets === +offsets) {\n\t\t\tthis.offsets = { top: offsets, bottom: offsets };\n\t\t} else {\n\t\t\tthis.offsets = {\n\t\t\t\ttop: offsets.top || defaultOffsets.top,\n\t\t\t\tbottom: offsets.bottom || defaultOffsets.bottom\n\t\t\t};\n\t\t}\n\t\n\t\tthis.callbacks = {}; // {callback: function, isOne: true }\n\t\n\t\tfor (var i = 0, j = eventTypes.length; i < j; i++) {\n\t\t\tself.callbacks[eventTypes[i]] = [];\n\t\t}\n\t\n\t\tthis.locked = false;\n\t\n\t\tvar wasInViewport;\n\t\tvar wasFullyInViewport;\n\t\tvar wasAboveViewport;\n\t\tvar wasBelowViewport;\n\t\n\t\tvar listenerToTriggerListI;\n\t\tvar listener;\n\t\tfunction triggerCallbackArray(listeners, event) {\n\t\t\tif (listeners.length === 0) {\n\t\t\t\treturn;\n\t\t\t}\n\t\t\tlistenerToTriggerListI = listeners.length;\n\t\t\twhile (listenerToTriggerListI--) {\n\t\t\t\tlistener = listeners[listenerToTriggerListI];\n\t\t\t\tlistener.callback.call(self, event, self);\n\t\t\t\tif (listener.isOne) {\n\t\t\t\t\tlisteners.splice(listenerToTriggerListI, 1);\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t\tthis.triggerCallbacks = function triggerCallbacks(event) {\n\t\n\t\t\tif (this.isInViewport && !wasInViewport) {\n\t\t\t\ttriggerCallbackArray(this.callbacks[ENTERVIEWPORT], event);\n\t\t\t}\n\t\t\tif (this.isFullyInViewport && !wasFullyInViewport) {\n\t\t\t\ttriggerCallbackArray(this.callbacks[FULLYENTERVIEWPORT], event);\n\t\t\t}\n\t\n\t\t\tif (this.isAboveViewport !== wasAboveViewport && this.isBelowViewport !== wasBelowViewport) {\n\t\n\t\t\t\ttriggerCallbackArray(this.callbacks[VISIBILITYCHANGE], event);\n\t\n\t\t\t\t// if you skip completely past this element\n\t\t\t\tif (!wasFullyInViewport && !this.isFullyInViewport) {\n\t\t\t\t\ttriggerCallbackArray(this.callbacks[FULLYENTERVIEWPORT], event);\n\t\t\t\t\ttriggerCallbackArray(this.callbacks[PARTIALLYEXITVIEWPORT], event);\n\t\t\t\t}\n\t\t\t\tif (!wasInViewport && !this.isInViewport) {\n\t\t\t\t\ttriggerCallbackArray(this.callbacks[ENTERVIEWPORT], event);\n\t\t\t\t\ttriggerCallbackArray(this.callbacks[EXITVIEWPORT], event);\n\t\t\t\t}\n\t\t\t}\n\t\n\t\t\tif (!this.isFullyInViewport && wasFullyInViewport) {\n\t\t\t\ttriggerCallbackArray(this.callbacks[PARTIALLYEXITVIEWPORT], event);\n\t\t\t}\n\t\t\tif (!this.isInViewport && wasInViewport) {\n\t\t\t\ttriggerCallbackArray(this.callbacks[EXITVIEWPORT], event);\n\t\t\t}\n\t\t\tif (this.isInViewport !== wasInViewport) {\n\t\t\t\ttriggerCallbackArray(this.callbacks[VISIBILITYCHANGE], event);\n\t\t\t}\n\t\t\tswitch (true) {\n\t\t\t\tcase wasInViewport !== this.isInViewport:\n\t\t\t\tcase wasFullyInViewport !== this.isFullyInViewport:\n\t\t\t\tcase wasAboveViewport !== this.isAboveViewport:\n\t\t\t\tcase wasBelowViewport !== this.isBelowViewport:\n\t\t\t\t\ttriggerCallbackArray(this.callbacks[STATECHANGE], event);\n\t\t\t}\n\t\n\t\t\twasInViewport = this.isInViewport;\n\t\t\twasFullyInViewport = this.isFullyInViewport;\n\t\t\twasAboveViewport = this.isAboveViewport;\n\t\t\twasBelowViewport = this.isBelowViewport;\n\t\t};\n\t\n\t\tthis.recalculateLocation = function () {\n\t\t\tif (this.locked) {\n\t\t\t\treturn;\n\t\t\t}\n\t\t\tvar previousTop = this.top;\n\t\t\tvar previousBottom = this.bottom;\n\t\t\tif (this.watchItem.nodeName) {\n\t\t\t\t// a dom element\n\t\t\t\tvar cachedDisplay = this.watchItem.style.display;\n\t\t\t\tif (cachedDisplay === 'none') {\n\t\t\t\t\tthis.watchItem.style.display = '';\n\t\t\t\t}\n\t\n\t\t\t\tvar containerOffset = 0;\n\t\t\t\tvar container = this.container;\n\t\t\t\twhile (container.containerWatcher) {\n\t\t\t\t\tcontainerOffset += container.containerWatcher.top - container.containerWatcher.container.viewportTop;\n\t\t\t\t\tcontainer = container.containerWatcher.container;\n\t\t\t\t}\n\t\n\t\t\t\tvar boundingRect = this.watchItem.getBoundingClientRect();\n\t\t\t\tthis.top = boundingRect.top + this.container.viewportTop - containerOffset;\n\t\t\t\tthis.bottom = boundingRect.bottom + this.container.viewportTop - containerOffset;\n\t\n\t\t\t\tif (cachedDisplay === 'none') {\n\t\t\t\t\tthis.watchItem.style.display = cachedDisplay;\n\t\t\t\t}\n\t\t\t} else if (this.watchItem === +this.watchItem) {\n\t\t\t\t// number\n\t\t\t\tif (this.watchItem > 0) {\n\t\t\t\t\tthis.top = this.bottom = this.watchItem;\n\t\t\t\t} else {\n\t\t\t\t\tthis.top = this.bottom = this.container.documentHeight - this.watchItem;\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\t// an object with a top and bottom property\n\t\t\t\tthis.top = this.watchItem.top;\n\t\t\t\tthis.bottom = this.watchItem.bottom;\n\t\t\t}\n\t\n\t\t\tthis.top -= this.offsets.top;\n\t\t\tthis.bottom += this.offsets.bottom;\n\t\t\tthis.height = this.bottom - this.top;\n\t\n\t\t\tif ((previousTop !== undefined || previousBottom !== undefined) && (this.top !== previousTop || this.bottom !== previousBottom)) {\n\t\t\t\ttriggerCallbackArray(this.callbacks[LOCATIONCHANGE], null);\n\t\t\t}\n\t\t};\n\t\n\t\tthis.recalculateLocation();\n\t\tthis.update();\n\t\n\t\twasInViewport = this.isInViewport;\n\t\twasFullyInViewport = this.isFullyInViewport;\n\t\twasAboveViewport = this.isAboveViewport;\n\t\twasBelowViewport = this.isBelowViewport;\n\t}\n\t\n\tElementWatcher.prototype = {\n\t\ton: function on(event, callback, isOne) {\n\t\n\t\t\t// trigger the event if it applies to the element right now.\n\t\t\tswitch (true) {\n\t\t\t\tcase event === VISIBILITYCHANGE && !this.isInViewport && this.isAboveViewport:\n\t\t\t\tcase event === ENTERVIEWPORT && this.isInViewport:\n\t\t\t\tcase event === FULLYENTERVIEWPORT && this.isFullyInViewport:\n\t\t\t\tcase event === EXITVIEWPORT && this.isAboveViewport && !this.isInViewport:\n\t\t\t\tcase event === PARTIALLYEXITVIEWPORT && this.isInViewport && this.isAboveViewport:\n\t\t\t\t\tcallback.call(this, this.container.latestEvent, this);\n\t\t\t\t\tif (isOne) {\n\t\t\t\t\t\treturn;\n\t\t\t\t\t}\n\t\t\t}\n\t\n\t\t\tif (this.callbacks[event]) {\n\t\t\t\tthis.callbacks[event].push({ callback: callback, isOne: isOne || false });\n\t\t\t} else {\n\t\t\t\tthrow new Error('Tried to add a scroll monitor listener of type ' + event + '. Your options are: ' + eventTypes.join(', '));\n\t\t\t}\n\t\t},\n\t\toff: function off(event, callback) {\n\t\t\tif (this.callbacks[event]) {\n\t\t\t\tfor (var i = 0, item; item = this.callbacks[event][i]; i++) {\n\t\t\t\t\tif (item.callback === callback) {\n\t\t\t\t\t\tthis.callbacks[event].splice(i, 1);\n\t\t\t\t\t\tbreak;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\tthrow new Error('Tried to remove a scroll monitor listener of type ' + event + '. Your options are: ' + eventTypes.join(', '));\n\t\t\t}\n\t\t},\n\t\tone: function one(event, callback) {\n\t\t\tthis.on(event, callback, true);\n\t\t},\n\t\trecalculateSize: function recalculateSize() {\n\t\t\tthis.height = this.watchItem.offsetHeight + this.offsets.top + this.offsets.bottom;\n\t\t\tthis.bottom = this.top + this.height;\n\t\t},\n\t\tupdate: function update() {\n\t\t\tthis.isAboveViewport = this.top < this.container.viewportTop;\n\t\t\tthis.isBelowViewport = this.bottom > this.container.viewportBottom;\n\t\n\t\t\tthis.isInViewport = this.top < this.container.viewportBottom && this.bottom > this.container.viewportTop;\n\t\t\tthis.isFullyInViewport = this.top >= this.container.viewportTop && this.bottom <= this.container.viewportBottom || this.isAboveViewport && this.isBelowViewport;\n\t\t},\n\t\tdestroy: function destroy() {\n\t\t\tvar index = this.container.watchers.indexOf(this),\n\t\t\t    self = this;\n\t\t\tthis.container.watchers.splice(index, 1);\n\t\t\tfor (var i = 0, j = eventTypes.length; i < j; i++) {\n\t\t\t\tself.callbacks[eventTypes[i]].length = 0;\n\t\t\t}\n\t\t},\n\t\t// prevent recalculating the element location\n\t\tlock: function lock() {\n\t\t\tthis.locked = true;\n\t\t},\n\t\tunlock: function unlock() {\n\t\t\tthis.locked = false;\n\t\t}\n\t};\n\t\n\tvar eventHandlerFactory = function eventHandlerFactory(type) {\n\t\treturn function (callback, isOne) {\n\t\t\tthis.on.call(this, type, callback, isOne);\n\t\t};\n\t};\n\t\n\tfor (var i = 0, j = eventTypes.length; i < j; i++) {\n\t\tvar type = eventTypes[i];\n\t\tElementWatcher.prototype[type] = eventHandlerFactory(type);\n\t}\n\t\n\tmodule.exports = ElementWatcher;\n\n/***/ }\n/******/ ])\n});\n;\n\n\n// WEBPACK FOOTER //\n// scrollMonitor.js"," \t// The module cache\n \tvar installedModules = {};\n\n \t// The require function\n \tfunction __webpack_require__(moduleId) {\n\n \t\t// Check if module is in cache\n \t\tif(installedModules[moduleId])\n \t\t\treturn installedModules[moduleId].exports;\n\n \t\t// Create a new module (and put it into the cache)\n \t\tvar module = installedModules[moduleId] = {\n \t\t\texports: {},\n \t\t\tid: moduleId,\n \t\t\tloaded: false\n \t\t};\n\n \t\t// Execute the module function\n \t\tmodules[moduleId].call(module.exports, module, module.exports, __webpack_require__);\n\n \t\t// Flag the module as loaded\n \t\tmodule.loaded = true;\n\n \t\t// Return the exports of the module\n \t\treturn module.exports;\n \t}\n\n\n \t// expose the modules object (__webpack_modules__)\n \t__webpack_require__.m = modules;\n\n \t// expose the module cache\n \t__webpack_require__.c = installedModules;\n\n \t// __webpack_public_path__\n \t__webpack_require__.p = \"\";\n\n \t// Load entry module and return exports\n \treturn __webpack_require__(0);\n\n\n\n// WEBPACK FOOTER //\n// webpack/bootstrap 1c74ef17285e47193503","var { isInBrowser } = require('./src/constants');\n\nvar ScrollMonitorContainer = require('./src/container');\n\nvar scrollMonitor = new ScrollMonitorContainer(isInBrowser ? document.body : null);\nscrollMonitor.setStateFromDOM(null);\nscrollMonitor.listenToDOM();\n\nif (isInBrowser) {\n\twindow.scrollMonitor = scrollMonitor;\n}\n\nmodule.exports = scrollMonitor;\n\n\n\n// WEBPACK FOOTER //\n// ./index.js","exports.VISIBILITYCHANGE = 'visibilityChange';\nexports.ENTERVIEWPORT = 'enterViewport';\nexports.FULLYENTERVIEWPORT = 'fullyEnterViewport';\nexports.EXITVIEWPORT = 'exitViewport';\nexports.PARTIALLYEXITVIEWPORT = 'partiallyExitViewport';\nexports.LOCATIONCHANGE = 'locationChange';\nexports.STATECHANGE = 'stateChange';\n\nexports.eventTypes = [\n\texports.VISIBILITYCHANGE,\n\texports.ENTERVIEWPORT,\n\texports.FULLYENTERVIEWPORT,\n\texports.EXITVIEWPORT,\n\texports.PARTIALLYEXITVIEWPORT,\n\texports.LOCATIONCHANGE,\n\texports.STATECHANGE\n];\n\nexports.isOnServer = (typeof window === 'undefined');\nexports.isInBrowser = !exports.isOnServer;\n\nexports.defaultOffsets = {top: 0, bottom: 0};\n\n\n\n// WEBPACK FOOTER //\n// ./src/constants.js","var { isOnServer, isInBrowser, eventTypes } = require('./constants');\nvar Watcher = require('./watcher');\n\nfunction getViewportHeight (element) {\n\tif (isOnServer) {\n\t\treturn 0;\n\t}\n\tif (element === document.body) {\n\t\treturn window.innerHeight || document.documentElement.clientHeight;\n\t} else {\n\t\treturn element.clientHeight;\n\t}\n}\n\nfunction getContentHeight (element) {\n\tif (isOnServer) {\n\t\treturn 0;\n\t}\n\n\tif (element === document.body) {\n\t\t// jQuery approach\n\t\t// whichever is greatest\n\t\treturn Math.max(\n\t\t\tdocument.body.scrollHeight, document.documentElement.scrollHeight,\n\t\t\tdocument.body.offsetHeight, document.documentElement.offsetHeight,\n\t\t\tdocument.documentElement.clientHeight\n\t\t);\n\t} else {\n\t\treturn element.scrollHeight;\n\t}\n}\n\nfunction scrollTop (element) {\n\tif (isOnServer) {\n\t\treturn 0;\n\t}\n\tif (element === document.body) {\n\t\treturn window.pageYOffset ||\n\t\t\t(document.documentElement && document.documentElement.scrollTop) ||\n\t\t\tdocument.body.scrollTop;\n\t} else {\n\t\treturn element.scrollTop;\n\t}\n}\n\n\nclass ScrollMonitorContainer {\n\tconstructor (item, parentWatcher) {\n\t\tvar self = this;\n\n\t\tthis.item = item;\n\t\tthis.watchers = [];\n\t\tthis.viewportTop = null;\n\t\tthis.viewportBottom = null;\n\t\tthis.documentHeight = getContentHeight(item);\n\t\tthis.viewportHeight = getViewportHeight(item);\n\t\tthis.DOMListener = function () {\n\t\t\tScrollMonitorContainer.prototype.DOMListener.apply(self, arguments);\n\t\t};\n\t\tthis.eventTypes = eventTypes;\n\n\t\tif (parentWatcher) {\n\t\t\tthis.containerWatcher = parentWatcher.create(item);\n\t\t}\n\n\t\tvar previousDocumentHeight;\n\n\t\tvar calculateViewportI;\n\t\tfunction calculateViewport() {\n\t\t\tself.viewportTop = scrollTop(item);\n\t\t\tself.viewportBottom = self.viewportTop + self.viewportHeight;\n\t\t\tself.documentHeight = getContentHeight(item);\n\t\t\tif (self.documentHeight !== previousDocumentHeight) {\n\t\t\t\tcalculateViewportI = self.watchers.length;\n\t\t\t\twhile( calculateViewportI-- ) {\n\t\t\t\t\tself.watchers[calculateViewportI].recalculateLocation();\n\t\t\t\t}\n\t\t\t\tpreviousDocumentHeight = self.documentHeight;\n\t\t\t}\n\t\t}\n\n\t\tvar updateAndTriggerWatchersI;\n\t\tfunction updateAndTriggerWatchers() {\n\t\t\t// update all watchers then trigger the events so one can rely on another being up to date.\n\t\t\tupdateAndTriggerWatchersI = self.watchers.length;\n\t\t\twhile( updateAndTriggerWatchersI-- ) {\n\t\t\t\tself.watchers[updateAndTriggerWatchersI].update();\n\t\t\t}\n\n\t\t\tupdateAndTriggerWatchersI = self.watchers.length;\n\t\t\twhile( updateAndTriggerWatchersI-- ) {\n\t\t\t\tself.watchers[updateAndTriggerWatchersI].triggerCallbacks();\n\t\t\t}\n\n\t\t}\n\n\t\tthis.update = function() {\n\t\t\tcalculateViewport();\n\t\t\tupdateAndTriggerWatchers();\n\t\t};\n\t\tthis.recalculateLocations = function() {\n\t\t\tthis.documentHeight = 0;\n\t\t\tthis.update();\n\t\t};\n\n\t}\n\n\tlistenToDOM () {\n\t\tif (isInBrowser) {\n\t\t\tif (window.addEventListener) {\n\t\t\t\tif (this.item === document.body) {\n\t\t\t\t\twindow.addEventListener('scroll', this.DOMListener);\n\t\t\t\t} else {\n\t\t\t\t\tthis.item.addEventListener('scroll', this.DOMListener);\n\t\t\t\t}\n\t\t\t\twindow.addEventListener('resize', this.DOMListener);\n\t\t\t} else {\n\t\t\t\t// Old IE support\n\t\t\t\tif (this.item === document.body) {\n\t\t\t\t\twindow.attachEvent('onscroll', this.DOMListener);\n\t\t\t\t} else {\n\t\t\t\t\tthis.item.attachEvent('onscroll', this.DOMListener);\n\t\t\t\t}\n\t\t\t\twindow.attachEvent('onresize', this.DOMListener);\n\t\t\t}\n\t\t\tthis.destroy = function () {\n\t\t\t\tif (window.addEventListener) {\n\t\t\t\t\tif (this.item === document.body) {\n\t\t\t\t\t\twindow.removeEventListener('scroll', this.DOMListener);\n\t\t\t\t\t\tthis.containerWatcher.destroy();\n\t\t\t\t\t} else {\n\t\t\t\t\t\tthis.item.removeEventListener('scroll', this.DOMListener);\n\t\t\t\t\t}\n\t\t\t\t\twindow.removeEventListener('resize', this.DOMListener);\n\t\t\t\t} else {\n\t\t\t\t\t// Old IE support\n\t\t\t\t\tif (this.item === document.body) {\n\t\t\t\t\t\twindow.detachEvent('onscroll', this.DOMListener);\n\t\t\t\t\t\tthis.containerWatcher.destroy();\n\t\t\t\t\t} else {\n\t\t\t\t\t\tthis.item.detachEvent('onscroll', this.DOMListener);\n\t\t\t\t\t}\n\t\t\t\t\twindow.detachEvent('onresize', this.DOMListener);\n\t\t\t\t}\n\t\t\t};\n\t\t}\n\t}\n\n\tdestroy () {\n\t\t// noop, override for your own purposes.\n\t\t// in listenToDOM, for example.\n\t}\n\n\tDOMListener (event) {\n\t\t//alert('got scroll');\n\t\tthis.setStateFromDOM(event);\n\t}\n\n\tsetStateFromDOM (event) {\n\t\tvar viewportTop = scrollTop(this.item);\n\t\tvar viewportHeight = getViewportHeight(this.item);\n\t\tvar contentHeight = getContentHeight(this.item);\n\n\t\tthis.setState(viewportTop, viewportHeight, contentHeight, event);\n\t}\n\n\tsetState (newViewportTop, newViewportHeight, newContentHeight, event) {\n\t\tvar needsRecalcuate = (newViewportHeight !== this.viewportHeight || newContentHeight !== this.contentHeight);\n\n\t\tthis.latestEvent = event;\n\t\tthis.viewportTop = newViewportTop;\n\t\tthis.viewportHeight = newViewportHeight;\n\t\tthis.viewportBottom = newViewportTop + newViewportHeight;\n\t\tthis.contentHeight = newContentHeight;\n\n\t\tif (needsRecalcuate) {\n\t\t\tlet i = this.watchers.length;\n\t\t\twhile (i--) {\n\t\t\t\tthis.watchers[i].recalculateLocation();\n\t\t\t}\n\t\t}\n\t\tthis.updateAndTriggerWatchers(event);\n\t}\n\n\tupdateAndTriggerWatchers (event) {\n\t\tlet i = this.watchers.length;\n\t\twhile (i--) {\n\t\t\tthis.watchers[i].update();\n\t\t}\n\n\t\ti = this.watchers.length;\n\t\twhile (i--) {\n\t\t\tthis.watchers[i].triggerCallbacks(event);\n\t\t}\n\t}\n\n\tcreateCustomContainer () {\n\t\treturn new ScrollMonitorContainer();\n\t}\n\n\tcreateContainer (item) {\n\t\tif (typeof item === 'string') {\n\t\t\titem = document.querySelector(item);\n\t\t} else if (item && item.length > 0) {\n\t\t\titem = item[0];\n\t\t}\n\t\tvar container = new ScrollMonitorContainer(item, this);\n\t\tcontainer.setStateFromDOM();\n\t\tcontainer.listenToDOM();\n\t\treturn container;\n\t}\n\n\tcreate (item, offsets) {\n\t\tif (typeof item === 'string') {\n\t\t\titem = document.querySelector(item);\n\t\t} else if (item && item.length > 0) {\n\t\t\titem = item[0];\n\t\t}\n\t\tvar watcher = new Watcher(this, item, offsets);\n\t\tthis.watchers.push(watcher);\n\t\treturn watcher;\n\t}\n\n\tbeget (item, offsets) {\n\t\treturn this.create(item, offsets);\n\t}\n}\n\nmodule.exports = ScrollMonitorContainer;\n\n\n\n\n// WEBPACK FOOTER //\n// ./src/container.js","var {\n\tVISIBILITYCHANGE,\n\tENTERVIEWPORT,\n\tFULLYENTERVIEWPORT,\n\tEXITVIEWPORT,\n\tPARTIALLYEXITVIEWPORT,\n\tLOCATIONCHANGE,\n\tSTATECHANGE,\n\teventTypes,\n\tdefaultOffsets\n} = require('./constants');\n\nfunction ElementWatcher (containerWatcher, watchItem, offsets) {\n\tvar self = this;\n\n\tthis.watchItem = watchItem;\n\tthis.container = containerWatcher;\n\n\tif (!offsets) {\n\t\tthis.offsets = defaultOffsets;\n\t} else if (offsets === +offsets) {\n\t\tthis.offsets = {top: offsets, bottom: offsets};\n\t} else {\n\t\tthis.offsets = {\n\t\t\ttop: offsets.top || defaultOffsets.top,\n\t\t\tbottom: offsets.bottom || defaultOffsets.bottom\n\t\t};\n\t}\n\n\tthis.callbacks = {}; // {callback: function, isOne: true }\n\n\tfor (var i = 0, j = eventTypes.length; i < j; i++) {\n\t\tself.callbacks[eventTypes[i]] = [];\n\t}\n\n\tthis.locked = false;\n\n\tvar wasInViewport;\n\tvar wasFullyInViewport;\n\tvar wasAboveViewport;\n\tvar wasBelowViewport;\n\n\tvar listenerToTriggerListI;\n\tvar listener;\n\tfunction triggerCallbackArray (listeners, event) {\n\t\tif (listeners.length === 0) {\n\t\t\treturn;\n\t\t}\n\t\tlistenerToTriggerListI = listeners.length;\n\t\twhile (listenerToTriggerListI--) {\n\t\t\tlistener = listeners[listenerToTriggerListI];\n\t\t\tlistener.callback.call(self, event, self);\n\t\t\tif (listener.isOne) {\n\t\t\t\tlisteners.splice(listenerToTriggerListI, 1);\n\t\t\t}\n\t\t}\n\t}\n\tthis.triggerCallbacks = function triggerCallbacks (event) {\n\n\t\tif (this.isInViewport && !wasInViewport) {\n\t\t\ttriggerCallbackArray( this.callbacks[ENTERVIEWPORT], event );\n\t\t}\n\t\tif (this.isFullyInViewport && !wasFullyInViewport) {\n\t\t\ttriggerCallbackArray( this.callbacks[FULLYENTERVIEWPORT], event );\n\t\t}\n\n\n\t\tif (this.isAboveViewport !== wasAboveViewport &&\n\t\t\tthis.isBelowViewport !== wasBelowViewport) {\n\n\t\t\ttriggerCallbackArray( this.callbacks[VISIBILITYCHANGE], event );\n\n\t\t\t// if you skip completely past this element\n\t\t\tif (!wasFullyInViewport && !this.isFullyInViewport) {\n\t\t\t\ttriggerCallbackArray( this.callbacks[FULLYENTERVIEWPORT], event );\n\t\t\t\ttriggerCallbackArray( this.callbacks[PARTIALLYEXITVIEWPORT], event );\n\t\t\t}\n\t\t\tif (!wasInViewport && !this.isInViewport) {\n\t\t\t\ttriggerCallbackArray( this.callbacks[ENTERVIEWPORT], event );\n\t\t\t\ttriggerCallbackArray( this.callbacks[EXITVIEWPORT], event );\n\t\t\t}\n\t\t}\n\n\t\tif (!this.isFullyInViewport && wasFullyInViewport) {\n\t\t\ttriggerCallbackArray( this.callbacks[PARTIALLYEXITVIEWPORT], event );\n\t\t}\n\t\tif (!this.isInViewport && wasInViewport) {\n\t\t\ttriggerCallbackArray( this.callbacks[EXITVIEWPORT], event );\n\t\t}\n\t\tif (this.isInViewport !== wasInViewport) {\n\t\t\ttriggerCallbackArray( this.callbacks[VISIBILITYCHANGE], event );\n\t\t}\n\t\tswitch( true ) {\n\t\t\tcase wasInViewport !== this.isInViewport:\n\t\t\tcase wasFullyInViewport !== this.isFullyInViewport:\n\t\t\tcase wasAboveViewport !== this.isAboveViewport:\n\t\t\tcase wasBelowViewport !== this.isBelowViewport:\n\t\t\t\ttriggerCallbackArray( this.callbacks[STATECHANGE], event );\n\t\t}\n\n\t\twasInViewport = this.isInViewport;\n\t\twasFullyInViewport = this.isFullyInViewport;\n\t\twasAboveViewport = this.isAboveViewport;\n\t\twasBelowViewport = this.isBelowViewport;\n\n\t};\n\n\tthis.recalculateLocation = function () {\n\t\tif (this.locked) {\n\t\t\treturn;\n\t\t}\n\t\tvar previousTop = this.top;\n\t\tvar previousBottom = this.bottom;\n\t\tif (this.watchItem.nodeName) { // a dom element\n\t\t\tvar cachedDisplay = this.watchItem.style.display;\n\t\t\tif (cachedDisplay === 'none') {\n\t\t\t\tthis.watchItem.style.display = '';\n\t\t\t}\n\n\t\t\tvar containerOffset = 0;\n\t\t\tvar container = this.container;\n\t\t\twhile (container.containerWatcher) {\n\t\t\t\tcontainerOffset += container.containerWatcher.top - container.containerWatcher.container.viewportTop;\n\t\t\t\tcontainer = container.containerWatcher.container;\n\t\t\t}\n\n\t\t\tvar boundingRect = this.watchItem.getBoundingClientRect();\n\t\t\tthis.top = boundingRect.top + this.container.viewportTop - containerOffset;\n\t\t\tthis.bottom = boundingRect.bottom + this.container.viewportTop - containerOffset;\n\n\t\t\tif (cachedDisplay === 'none') {\n\t\t\t\tthis.watchItem.style.display = cachedDisplay;\n\t\t\t}\n\n\t\t} else if (this.watchItem === +this.watchItem) { // number\n\t\t\tif (this.watchItem > 0) {\n\t\t\t\tthis.top = this.bottom = this.watchItem;\n\t\t\t} else {\n\t\t\t\tthis.top = this.bottom = this.container.documentHeight - this.watchItem;\n\t\t\t}\n\n\t\t} else { // an object with a top and bottom property\n\t\t\tthis.top = this.watchItem.top;\n\t\t\tthis.bottom = this.watchItem.bottom;\n\t\t}\n\n\t\tthis.top -= this.offsets.top;\n\t\tthis.bottom += this.offsets.bottom;\n\t\tthis.height = this.bottom - this.top;\n\n\t\tif ( (previousTop !== undefined || previousBottom !== undefined) && (this.top !== previousTop || this.bottom !== previousBottom) ) {\n\t\t\ttriggerCallbackArray( this.callbacks[LOCATIONCHANGE], null );\n\t\t}\n\t};\n\n\tthis.recalculateLocation();\n\tthis.update();\n\n\twasInViewport = this.isInViewport;\n\twasFullyInViewport = this.isFullyInViewport;\n\twasAboveViewport = this.isAboveViewport;\n\twasBelowViewport = this.isBelowViewport;\n}\n\nElementWatcher.prototype = {\n\ton: function (event, callback, isOne) {\n\n\t\t// trigger the event if it applies to the element right now.\n\t\tswitch( true ) {\n\t\t\tcase event === VISIBILITYCHANGE && !this.isInViewport && this.isAboveViewport:\n\t\t\tcase event === ENTERVIEWPORT && this.isInViewport:\n\t\t\tcase event === FULLYENTERVIEWPORT && this.isFullyInViewport:\n\t\t\tcase event === EXITVIEWPORT && this.isAboveViewport && !this.isInViewport:\n\t\t\tcase event === PARTIALLYEXITVIEWPORT && this.isInViewport && this.isAboveViewport:\n\t\t\t\tcallback.call(this, this.container.latestEvent, this);\n\t\t\t\tif (isOne) {\n\t\t\t\t\treturn;\n\t\t\t\t}\n\t\t}\n\n\t\tif (this.callbacks[event]) {\n\t\t\tthis.callbacks[event].push({callback: callback, isOne: isOne||false});\n\t\t} else {\n\t\t\tthrow new Error('Tried to add a scroll monitor listener of type '+event+'. Your options are: '+eventTypes.join(', '));\n\t\t}\n\t},\n\toff: function( event, callback ) {\n\t\tif (this.callbacks[event]) {\n\t\t\tfor (var i = 0, item; item = this.callbacks[event][i]; i++) {\n\t\t\t\tif (item.callback === callback) {\n\t\t\t\t\tthis.callbacks[event].splice(i, 1);\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t}\n\t\t} else {\n\t\t\tthrow new Error('Tried to remove a scroll monitor listener of type '+event+'. Your options are: '+eventTypes.join(', '));\n\t\t}\n\t},\n\tone: function( event, callback ) {\n\t\tthis.on( event, callback, true);\n\t},\n\trecalculateSize: function() {\n\t\tthis.height = this.watchItem.offsetHeight + this.offsets.top + this.offsets.bottom;\n\t\tthis.bottom = this.top + this.height;\n\t},\n\tupdate: function() {\n\t\tthis.isAboveViewport = this.top < this.container.viewportTop;\n\t\tthis.isBelowViewport = this.bottom > this.container.viewportBottom;\n\n\t\tthis.isInViewport = (this.top < this.container.viewportBottom && this.bottom > this.container.viewportTop);\n\t\tthis.isFullyInViewport = (this.top >= this.container.viewportTop && this.bottom <= this.container.viewportBottom) || (this.isAboveViewport && this.isBelowViewport);\n\n\t},\n\tdestroy: function() {\n\t\tvar index = this.container.watchers.indexOf(this),\n\t\t\tself  = this;\n\t\tthis.container.watchers.splice(index, 1);\n\t\tfor (var i = 0, j = eventTypes.length; i < j; i++) {\n\t\t\tself.callbacks[eventTypes[i]].length = 0;\n\t\t}\n\t},\n\t// prevent recalculating the element location\n\tlock: function() {\n\t\tthis.locked = true;\n\t},\n\tunlock: function() {\n\t\tthis.locked = false;\n\t}\n};\n\nvar eventHandlerFactory = function (type) {\n\treturn function( callback, isOne ) {\n\t\tthis.on.call(this, type, callback, isOne);\n\t};\n};\n\nfor (var i = 0, j = eventTypes.length; i < j; i++) {\n\tvar type =  eventTypes[i];\n\tElementWatcher.prototype[type] = eventHandlerFactory(type);\n}\n\nmodule.exports = ElementWatcher;\n\n\n\n// WEBPACK FOOTER //\n// ./src/watcher.js"],"sourceRoot":""}