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angular-animate.js
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			/**
			* @license AngularJS v1.5.8
			* (c) 2010-2016 Google, Inc. http://angularjs.org
			* License: MIT
			*/
			(function(window, angular) {'use strict';

			var ELEMENT_NODE = 1;
			var COMMENT_NODE = 8;

			var ADD_CLASS_SUFFIX = '-add';
			var REMOVE_CLASS_SUFFIX = '-remove';
			var EVENT_CLASS_PREFIX = 'ng-';
			var ACTIVE_CLASS_SUFFIX = '-active';
			var PREPARE_CLASS_SUFFIX = '-prepare';

			var NG_ANIMATE_CLASSNAME = 'ng-animate';
			var NG_ANIMATE_CHILDREN_DATA = '$$ngAnimateChildren';

			// Detect proper transitionend/animationend event names.
			var CSS_PREFIX = '', TRANSITION_PROP, TRANSITIONEND_EVENT, ANIMATION_PROP, ANIMATIONEND_EVENT;

			// If unprefixed events are not supported but webkit-prefixed are, use the latter.
			// Otherwise, just use W3C names, browsers not supporting them at all will just ignore them.
			// Note: Chrome implements `window.onwebkitanimationend` and doesn't implement `window.onanimationend`
			// but at the same time dispatches the `animationend` event and not `webkitAnimationEnd`.
			// Register both events in case `window.onanimationend` is not supported because of that,
			// do the same for `transitionend` as Safari is likely to exhibit similar behavior.
			// Also, the only modern browser that uses vendor prefixes for transitions/keyframes is webkit
			// therefore there is no reason to test anymore for other vendor prefixes:
			// http://caniuse.com/#search=transition
			if ((window.ontransitionend === void 0) && (window.onwebkittransitionend !== void 0)) {
			CSS_PREFIX = '-webkit-';
			TRANSITION_PROP = 'WebkitTransition';
			TRANSITIONEND_EVENT = 'webkitTransitionEnd transitionend';
			} else {
			TRANSITION_PROP = 'transition';
			TRANSITIONEND_EVENT = 'transitionend';
			}

			if ((window.onanimationend === void 0) && (window.onwebkitanimationend !== void 0)) {
			CSS_PREFIX = '-webkit-';
			ANIMATION_PROP = 'WebkitAnimation';
			ANIMATIONEND_EVENT = 'webkitAnimationEnd animationend';
			} else {
			ANIMATION_PROP = 'animation';
			ANIMATIONEND_EVENT = 'animationend';
			}

			var DURATION_KEY = 'Duration';
			var PROPERTY_KEY = 'Property';
			var DELAY_KEY = 'Delay';
			var TIMING_KEY = 'TimingFunction';
			var ANIMATION_ITERATION_COUNT_KEY = 'IterationCount';
			var ANIMATION_PLAYSTATE_KEY = 'PlayState';
			var SAFE_FAST_FORWARD_DURATION_VALUE = 9999;

			var ANIMATION_DELAY_PROP = ANIMATION_PROP + DELAY_KEY;
			var ANIMATION_DURATION_PROP = ANIMATION_PROP + DURATION_KEY;
			var TRANSITION_DELAY_PROP = TRANSITION_PROP + DELAY_KEY;
			var TRANSITION_DURATION_PROP = TRANSITION_PROP + DURATION_KEY;

			var ngMinErr = angular.$$minErr('ng');
			function assertArg(arg, name, reason) {
			if (!arg) {
			throw ngMinErr('areq', "Argument '{0}' is {1}", (name \|\| '?'), (reason \|\| "required"));
			}
			return arg;
			}

			function mergeClasses(a,b) {
			if (!a && !b) return '';
			if (!a) return b;
			if (!b) return a;
			if (isArray(a)) a = a.join(' ');
			if (isArray(b)) b = b.join(' ');
			return a + ' ' + b;
			}

			function packageStyles(options) {
			var styles = {};
			if (options && (options.to \|\| options.from)) {
			styles.to = options.to;
			styles.from = options.from;
			}
			return styles;
			}

			function pendClasses(classes, fix, isPrefix) {
			var className = '';
			classes = isArray(classes)
			? classes
			: classes && isString(classes) && classes.length
			? classes.split(/\s+/)
			: [];
			forEach(classes, function(klass, i) {
			if (klass && klass.length > 0) {
			className += (i > 0) ? ' ' : '';
			className += isPrefix ? fix + klass
			: klass + fix;
			}
			});
			return className;
			}

			function removeFromArray(arr, val) {
			var index = arr.indexOf(val);
			if (val >= 0) {
			arr.splice(index, 1);
			}
			}

			function stripCommentsFromElement(element) {
			if (element instanceof jqLite) {
			switch (element.length) {
			case 0:
			return element;

			case 1:
			// there is no point of stripping anything if the element
			// is the only element within the jqLite wrapper.
			// (it's important that we retain the element instance.)
			if (element[0].nodeType === ELEMENT_NODE) {
			return element;
			}
			break;

			default:
			return jqLite(extractElementNode(element));
			}
			}

			if (element.nodeType === ELEMENT_NODE) {
			return jqLite(element);
			}
			}

			function extractElementNode(element) {
			if (!element[0]) return element;
			for (var i = 0; i < element.length; i++) {
			var elm = element[i];
			if (elm.nodeType == ELEMENT_NODE) {
			return elm;
			}
			}
			}

			function $$addClass($$jqLite, element, className) {
			forEach(element, function(elm) {
			$$jqLite.addClass(elm, className);
			});
			}

			function $$removeClass($$jqLite, element, className) {
			forEach(element, function(elm) {
			$$jqLite.removeClass(elm, className);
			});
			}

			function applyAnimationClassesFactory($$jqLite) {
			return function(element, options) {
			if (options.addClass) {
			$$addClass($$jqLite, element, options.addClass);
			options.addClass = null;
			}
			if (options.removeClass) {
			$$removeClass($$jqLite, element, options.removeClass);
			options.removeClass = null;
			}
			};
			}

			function prepareAnimationOptions(options) {
			options = options \|\| {};
			if (!options.$$prepared) {
			var domOperation = options.domOperation \|\| noop;
			options.domOperation = function() {
			options.$$domOperationFired = true;
			domOperation();
			domOperation = noop;
			};
			options.$$prepared = true;
			}
			return options;
			}

			function applyAnimationStyles(element, options) {
			applyAnimationFromStyles(element, options);
			applyAnimationToStyles(element, options);
			}

			function applyAnimationFromStyles(element, options) {
			if (options.from) {
			element.css(options.from);
			options.from = null;
			}
			}

			function applyAnimationToStyles(element, options) {
			if (options.to) {
			element.css(options.to);
			options.to = null;
			}
			}

			function mergeAnimationDetails(element, oldAnimation, newAnimation) {
			var target = oldAnimation.options \|\| {};
			var newOptions = newAnimation.options \|\| {};

			var toAdd = (target.addClass \|\| '') + ' ' + (newOptions.addClass \|\| '');
			var toRemove = (target.removeClass \|\| '') + ' ' + (newOptions.removeClass \|\| '');
			var classes = resolveElementClasses(element.attr('class'), toAdd, toRemove);

			if (newOptions.preparationClasses) {
			target.preparationClasses = concatWithSpace(newOptions.preparationClasses, target.preparationClasses);
			delete newOptions.preparationClasses;
			}

			// noop is basically when there is no callback; otherwise something has been set
			var realDomOperation = target.domOperation !== noop ? target.domOperation : null;

			extend(target, newOptions);

			// TODO(matsko or sreeramu): proper fix is to maintain all animation callback in array and call at last,but now only leave has the callback so no issue with this.
			if (realDomOperation) {
			target.domOperation = realDomOperation;
			}

			if (classes.addClass) {
			target.addClass = classes.addClass;
			} else {
			target.addClass = null;
			}

			if (classes.removeClass) {
			target.removeClass = classes.removeClass;
			} else {
			target.removeClass = null;
			}

			oldAnimation.addClass = target.addClass;
			oldAnimation.removeClass = target.removeClass;

			return target;
			}

			function resolveElementClasses(existing, toAdd, toRemove) {
			var ADD_CLASS = 1;
			var REMOVE_CLASS = -1;

			var flags = {};
			existing = splitClassesToLookup(existing);

			toAdd = splitClassesToLookup(toAdd);
			forEach(toAdd, function(value, key) {
			flags[key] = ADD_CLASS;
			});

			toRemove = splitClassesToLookup(toRemove);
			forEach(toRemove, function(value, key) {
			flags[key] = flags[key] === ADD_CLASS ? null : REMOVE_CLASS;
			});

			var classes = {
			addClass: '',
			removeClass: ''
			};

			forEach(flags, function(val, klass) {
			var prop, allow;
			if (val === ADD_CLASS) {
			prop = 'addClass';
			allow = !existing[klass] \|\| existing[klass + REMOVE_CLASS_SUFFIX];
			} else if (val === REMOVE_CLASS) {
			prop = 'removeClass';
			allow = existing[klass] \|\| existing[klass + ADD_CLASS_SUFFIX];
			}
			if (allow) {
			if (classes[prop].length) {
			classes[prop] += ' ';
			}
			classes[prop] += klass;
			}
			});

			function splitClassesToLookup(classes) {
			if (isString(classes)) {
			classes = classes.split(' ');
			}

			var obj = {};
			forEach(classes, function(klass) {
			// sometimes the split leaves empty string values
			// incase extra spaces were applied to the options
			if (klass.length) {
			obj[klass] = true;
			}
			});
			return obj;
			}

			return classes;
			}

			function getDomNode(element) {
			return (element instanceof jqLite) ? element[0] : element;
			}

			function applyGeneratedPreparationClasses(element, event, options) {
			var classes = '';
			if (event) {
			classes = pendClasses(event, EVENT_CLASS_PREFIX, true);
			}
			if (options.addClass) {
			classes = concatWithSpace(classes, pendClasses(options.addClass, ADD_CLASS_SUFFIX));
			}
			if (options.removeClass) {
			classes = concatWithSpace(classes, pendClasses(options.removeClass, REMOVE_CLASS_SUFFIX));
			}
			if (classes.length) {
			options.preparationClasses = classes;
			element.addClass(classes);
			}
			}

			function clearGeneratedClasses(element, options) {
			if (options.preparationClasses) {
			element.removeClass(options.preparationClasses);
			options.preparationClasses = null;
			}
			if (options.activeClasses) {
			element.removeClass(options.activeClasses);
			options.activeClasses = null;
			}
			}

			function blockTransitions(node, duration) {
			// we use a negative delay value since it performs blocking
			// yet it doesn't kill any existing transitions running on the
			// same element which makes this safe for class-based animations
			var value = duration ? '-' + duration + 's' : '';
			applyInlineStyle(node, [TRANSITION_DELAY_PROP, value]);
			return [TRANSITION_DELAY_PROP, value];
			}

			function blockKeyframeAnimations(node, applyBlock) {
			var value = applyBlock ? 'paused' : '';
			var key = ANIMATION_PROP + ANIMATION_PLAYSTATE_KEY;
			applyInlineStyle(node, [key, value]);
			return [key, value];
			}

			function applyInlineStyle(node, styleTuple) {
			var prop = styleTuple[0];
			var value = styleTuple[1];
			node.style[prop] = value;
			}

			function concatWithSpace(a,b) {
			if (!a) return b;
			if (!b) return a;
			return a + ' ' + b;
			}

			var $$rAFSchedulerFactory = ['$$rAF', function($$rAF) {
			var queue, cancelFn;

			function scheduler(tasks) {
			// we make a copy since RAFScheduler mutates the state
			// of the passed in array variable and this would be difficult
			// to track down on the outside code
			queue = queue.concat(tasks);
			nextTick();
			}

			queue = scheduler.queue = [];

			/* waitUntilQuiet does two things:
			* 1. It will run the FINAL `fn` value only when an uncanceled RAF has passed through
			* 2. It will delay the next wave of tasks from running until the quiet `fn` has run.
			*
			* The motivation here is that animation code can request more time from the scheduler
			* before the next wave runs. This allows for certain DOM properties such as classes to
			* be resolved in time for the next animation to run.
			*/
			scheduler.waitUntilQuiet = function(fn) {
			if (cancelFn) cancelFn();

			cancelFn = $$rAF(function() {
			cancelFn = null;
			fn();
			nextTick();
			});
			};

			return scheduler;

			function nextTick() {
			if (!queue.length) return;

			var items = queue.shift();
			for (var i = 0; i < items.length; i++) {
			items[i]();
			}

			if (!cancelFn) {
			$$rAF(function() {
			if (!cancelFn) nextTick();
			});
			}
			}
			}];

			/**
			* @ngdoc directive
			* @name ngAnimateChildren
			* @restrict AE
			* @element ANY
			*
			* @description
			*
			* ngAnimateChildren allows you to specify that children of this element should animate even if any
			* of the children's parents are currently animating. By default, when an element has an active `enter`, `leave`, or `move`
			* (structural) animation, child elements that also have an active structural animation are not animated.
			*
			* Note that even if `ngAnimteChildren` is set, no child animations will run when the parent element is removed from the DOM (`leave` animation).
			*
			*
			* @param {string} ngAnimateChildren If the value is empty, `true` or `on`,
			* then child animations are allowed. If the value is `false`, child animations are not allowed.
			*
			* @example
			* <example module="ngAnimateChildren" name="ngAnimateChildren" deps="angular-animate.js" animations="true">
			<file name="index.html">
			<div ng-controller="mainController as main">
			<label>Show container? <input type="checkbox" ng-model="main.enterElement" /></label>
			<label>Animate children? <input type="checkbox" ng-model="main.animateChildren" /></label>
			<hr>
			<div ng-animate-children="{{main.animateChildren}}">
			<div ng-if="main.enterElement" class="container">
			List of items:
			<div ng-repeat="item in [0, 1, 2, 3]" class="item">Item {{item}}</div>
			</div>
			</div>
			</div>
			</file>
			<file name="animations.css">

			.container.ng-enter,
			.container.ng-leave {
			transition: all ease 1.5s;
			}

			.container.ng-enter,
			.container.ng-leave-active {
			opacity: 0;
			}

			.container.ng-leave,
			.container.ng-enter-active {
			opacity: 1;
			}

			.item {
			background: firebrick;
			color: #FFF;
			margin-bottom: 10px;
			}

			.item.ng-enter,
			.item.ng-leave {
			transition: transform 1.5s ease;
			}

			.item.ng-enter {
			transform: translateX(50px);
			}

			.item.ng-enter-active {
			transform: translateX(0);
			}
			</file>
			<file name="script.js">
			angular.module('ngAnimateChildren', ['ngAnimate'])
			.controller('mainController', function() {
			this.animateChildren = false;
			this.enterElement = false;
			});
			</file>
			</example>
			*/
			var $$AnimateChildrenDirective = ['$interpolate', function($interpolate) {
			return {
			link: function(scope, element, attrs) {
			var val = attrs.ngAnimateChildren;
			if (isString(val) && val.length === 0) { //empty attribute
			element.data(NG_ANIMATE_CHILDREN_DATA, true);
			} else {
			// Interpolate and set the value, so that it is available to
			// animations that run right after compilation
			setData($interpolate(val)(scope));
			attrs.$observe('ngAnimateChildren', setData);
			}

			function setData(value) {
			value = value === 'on' \|\| value === 'true';
			element.data(NG_ANIMATE_CHILDREN_DATA, value);
			}
			}
			};
			}];

			var ANIMATE_TIMER_KEY = '$$animateCss';

			/**
			* @ngdoc service
			* @name $animateCss
			* @kind object
			*
			* @description
			* The `$animateCss` service is a useful utility to trigger customized CSS-based transitions/keyframes
			* from a JavaScript-based animation or directly from a directive. The purpose of `$animateCss` is NOT
			* to side-step how `$animate` and ngAnimate work, but the goal is to allow pre-existing animations or
			* directives to create more complex animations that can be purely driven using CSS code.
			*
			* Note that only browsers that support CSS transitions and/or keyframe animations are capable of
			* rendering animations triggered via `$animateCss` (bad news for IE9 and lower).
			*
			* ## Usage
			* Once again, `$animateCss` is designed to be used inside of a registered JavaScript animation that
			* is powered by ngAnimate. It is possible to use `$animateCss` directly inside of a directive, however,
			* any automatic control over cancelling animations and/or preventing animations from being run on
			* child elements will not be handled by Angular. For this to work as expected, please use `$animate` to
			* trigger the animation and then setup a JavaScript animation that injects `$animateCss` to trigger
			* the CSS animation.
			*
			* The example below shows how we can create a folding animation on an element using `ng-if`:
			*
			* ```html
			* <!-- notice the `fold-animation` CSS class -->
			* <div ng-if="onOff" class="fold-animation">
			* This element will go BOOM
			* </div>
			* <button ng-click="onOff=true">Fold In</button>
			* ```
			*
			* Now we create the JavaScript animation that will trigger the CSS transition:
			*
			* ```js
			* ngModule.animation('.fold-animation', ['$animateCss', function($animateCss) {
			* return {
			* enter: function(element, doneFn) {
			* var height = element[0].offsetHeight;
			* return $animateCss(element, {
			* from: { height:'0px' },
			* to: { height:height + 'px' },
			* duration: 1 // one second
			* });
			* }
			* }
			* }]);
			* ```
			*
			* ## More Advanced Uses
			*
			* `$animateCss` is the underlying code that ngAnimate uses to power CSS-based animations behind the scenes. Therefore CSS hooks
			* like `.ng-EVENT`, `.ng-EVENT-active`, `.ng-EVENT-stagger` are all features that can be triggered using `$animateCss` via JavaScript code.
			*
			* This also means that just about any combination of adding classes, removing classes, setting styles, dynamically setting a keyframe animation,
			* applying a hardcoded duration or delay value, changing the animation easing or applying a stagger animation are all options that work with
			* `$animateCss`. The service itself is smart enough to figure out the combination of options and examine the element styling properties in order
			* to provide a working animation that will run in CSS.
			*
			* The example below showcases a more advanced version of the `.fold-animation` from the example above:
			*
			* ```js
			* ngModule.animation('.fold-animation', ['$animateCss', function($animateCss) {
			* return {
			* enter: function(element, doneFn) {
			* var height = element[0].offsetHeight;
			* return $animateCss(element, {
			* addClass: 'red large-text pulse-twice',
			* easing: 'ease-out',
			* from: { height:'0px' },
			* to: { height:height + 'px' },
			* duration: 1 // one second
			* });
			* }
			* }
			* }]);
			* ```
			*
			* Since we're adding/removing CSS classes then the CSS transition will also pick those up:
			*
			* ```css
			* /* since a hardcoded duration value of 1 was provided in the JavaScript animation code,
			* the CSS classes below will be transitioned despite them being defined as regular CSS classes */
			* .red { background:red; }
			* .large-text { font-size:20px; }
			*
			* /* we can also use a keyframe animation and $animateCss will make it work alongside the transition */
			* .pulse-twice {
			* animation: 0.5s pulse linear 2;
			* -webkit-animation: 0.5s pulse linear 2;
			* }
			*
			* @keyframes pulse {
			* from { transform: scale(0.5); }
			* to { transform: scale(1.5); }
			* }
			*
			* @-webkit-keyframes pulse {
			* from { -webkit-transform: scale(0.5); }
			* to { -webkit-transform: scale(1.5); }
			* }
			* ```
			*
			* Given this complex combination of CSS classes, styles and options, `$animateCss` will figure everything out and make the animation happen.
			*
			* ## How the Options are handled
			*
			* `$animateCss` is very versatile and intelligent when it comes to figuring out what configurations to apply to the element to ensure the animation
			* works with the options provided. Say for example we were adding a class that contained a keyframe value and we wanted to also animate some inline
			* styles using the `from` and `to` properties.
			*
			* ```js
			* var animator = $animateCss(element, {
			* from: { background:'red' },
			* to: { background:'blue' }
			* });
			* animator.start();
			* ```
			*
			* ```css
			* .rotating-animation {
			* animation:0.5s rotate linear;
			* -webkit-animation:0.5s rotate linear;
			* }
			*
			* @keyframes rotate {
			* from { transform: rotate(0deg); }
			* to { transform: rotate(360deg); }
			* }
			*
			* @-webkit-keyframes rotate {
			* from { -webkit-transform: rotate(0deg); }
			* to { -webkit-transform: rotate(360deg); }
			* }
			* ```
			*
			* The missing pieces here are that we do not have a transition set (within the CSS code nor within the `$animateCss` options) and the duration of the animation is
			* going to be detected from what the keyframe styles on the CSS class are. In this event, `$animateCss` will automatically create an inline transition
			* style matching the duration detected from the keyframe style (which is present in the CSS class that is being added) and then prepare both the transition
			* and keyframe animations to run in parallel on the element. Then when the animation is underway the provided `from` and `to` CSS styles will be applied
			* and spread across the transition and keyframe animation.
			*
			* ## What is returned
			*
			* `$animateCss` works in two stages: a preparation phase and an animation phase. Therefore when `$animateCss` is first called it will NOT actually
			* start the animation. All that is going on here is that the element is being prepared for the animation (which means that the generated CSS classes are
			* added and removed on the element). Once `$animateCss` is called it will return an object with the following properties:
			*
			* ```js
			* var animator = $animateCss(element, { ... });
			* ```
			*
			* Now what do the contents of our `animator` variable look like:
			*
			* ```js
			* {
			* // starts the animation
			* start: Function,
			*
			* // ends (aborts) the animation
			* end: Function
			* }
			* ```
			*
			* To actually start the animation we need to run `animation.start()` which will then return a promise that we can hook into to detect when the animation ends.
			* If we choose not to run the animation then we MUST run `animation.end()` to perform a cleanup on the element (since some CSS classes and styles may have been
			* applied to the element during the preparation phase). Note that all other properties such as duration, delay, transitions and keyframes are just properties
			* and that changing them will not reconfigure the parameters of the animation.
			*
			* ### runner.done() vs runner.then()
			* It is documented that `animation.start()` will return a promise object and this is true, however, there is also an additional method available on the
			* runner called `.done(callbackFn)`. The done method works the same as `.finally(callbackFn)`, however, it does not trigger a digest to occur.
			* Therefore, for performance reasons, it's always best to use `runner.done(callback)` instead of `runner.then()`, `runner.catch()` or `runner.finally()`
			* unless you really need a digest to kick off afterwards.
			*
			* Keep in mind that, to make this easier, ngAnimate has tweaked the JS animations API to recognize when a runner instance is returned from $animateCss
			* (so there is no need to call `runner.done(doneFn)` inside of your JavaScript animation code).
			* Check the {@link ngAnimate.$animateCss#usage animation code above} to see how this works.
			*
			* @param {DOMElement} element the element that will be animated
			* @param {object} options the animation-related options that will be applied during the animation
			*
			* * `event` - The DOM event (e.g. enter, leave, move). When used, a generated CSS class of `ng-EVENT` and `ng-EVENT-active` will be applied
			* to the element during the animation. Multiple events can be provided when spaces are used as a separator. (Note that this will not perform any DOM operation.)
			* * `structural` - Indicates that the `ng-` prefix will be added to the event class. Setting to `false` or omitting will turn `ng-EVENT` and
			* `ng-EVENT-active` in `EVENT` and `EVENT-active`. Unused if `event` is omitted.
			* * `easing` - The CSS easing value that will be applied to the transition or keyframe animation (or both).
			* * `transitionStyle` - The raw CSS transition style that will be used (e.g. `1s linear all`).
			* * `keyframeStyle` - The raw CSS keyframe animation style that will be used (e.g. `1s my_animation linear`).
			* * `from` - The starting CSS styles (a key/value object) that will be applied at the start of the animation.
			* * `to` - The ending CSS styles (a key/value object) that will be applied across the animation via a CSS transition.
			* * `addClass` - A space separated list of CSS classes that will be added to the element and spread across the animation.
			* * `removeClass` - A space separated list of CSS classes that will be removed from the element and spread across the animation.
			* * `duration` - A number value representing the total duration of the transition and/or keyframe (note that a value of 1 is 1000ms). If a value of `0`
			* is provided then the animation will be skipped entirely.
			* * `delay` - A number value representing the total delay of the transition and/or keyframe (note that a value of 1 is 1000ms). If a value of `true` is
			* used then whatever delay value is detected from the CSS classes will be mirrored on the elements styles (e.g. by setting delay true then the style value
			* of the element will be `transition-delay: DETECTED_VALUE`). Using `true` is useful when you want the CSS classes and inline styles to all share the same
			* CSS delay value.
			* * `stagger` - A numeric time value representing the delay between successively animated elements
			* ({@link ngAnimate#css-staggering-animations Click here to learn how CSS-based staggering works in ngAnimate.})
			* * `staggerIndex` - The numeric index representing the stagger item (e.g. a value of 5 is equal to the sixth item in the stagger; therefore when a
			* `stagger` option value of `0.1` is used then there will be a stagger delay of `600ms`)
			* * `applyClassesEarly` - Whether or not the classes being added or removed will be used when detecting the animation. This is set by `$animate` when enter/leave/move animations are fired to ensure that the CSS classes are resolved in time. (Note that this will prevent any transitions from occurring on the classes being added and removed.)
			* * `cleanupStyles` - Whether or not the provided `from` and `to` styles will be removed once
			* the animation is closed. This is useful for when the styles are used purely for the sake of
			* the animation and do not have a lasting visual effect on the element (e.g. a collapse and open animation).
			* By default this value is set to `false`.
			*
			* @return {object} an object with start and end methods and details about the animation.
			*
			* * `start` - The method to start the animation. This will return a `Promise` when called.
			* * `end` - This method will cancel the animation and remove all applied CSS classes and styles.
			*/
			var ONE_SECOND = 1000;
			var BASE_TEN = 10;

			var ELAPSED_TIME_MAX_DECIMAL_PLACES = 3;
			var CLOSING_TIME_BUFFER = 1.5;

			var DETECT_CSS_PROPERTIES = {
			transitionDuration: TRANSITION_DURATION_PROP,
			transitionDelay: TRANSITION_DELAY_PROP,
			transitionProperty: TRANSITION_PROP + PROPERTY_KEY,
			animationDuration: ANIMATION_DURATION_PROP,
			animationDelay: ANIMATION_DELAY_PROP,
			animationIterationCount: ANIMATION_PROP + ANIMATION_ITERATION_COUNT_KEY
			};

			var DETECT_STAGGER_CSS_PROPERTIES = {
			transitionDuration: TRANSITION_DURATION_PROP,
			transitionDelay: TRANSITION_DELAY_PROP,
			animationDuration: ANIMATION_DURATION_PROP,
			animationDelay: ANIMATION_DELAY_PROP
			};

			function getCssKeyframeDurationStyle(duration) {
			return [ANIMATION_DURATION_PROP, duration + 's'];
			}

			function getCssDelayStyle(delay, isKeyframeAnimation) {
			var prop = isKeyframeAnimation ? ANIMATION_DELAY_PROP : TRANSITION_DELAY_PROP;
			return [prop, delay + 's'];
			}

			function computeCssStyles($window, element, properties) {
			var styles = Object.create(null);
			var detectedStyles = $window.getComputedStyle(element) \|\| {};
			forEach(properties, function(formalStyleName, actualStyleName) {
			var val = detectedStyles[formalStyleName];
			if (val) {
			var c = val.charAt(0);

			// only numerical-based values have a negative sign or digit as the first value
			if (c === '-' \|\| c === '+' \|\| c >= 0) {
			val = parseMaxTime(val);
			}

			// by setting this to null in the event that the delay is not set or is set directly as 0
			// then we can still allow for negative values to be used later on and not mistake this
			// value for being greater than any other negative value.
			if (val === 0) {
			val = null;
			}
			styles[actualStyleName] = val;
			}
			});

			return styles;
			}

			function parseMaxTime(str) {
			var maxValue = 0;
			var values = str.split(/\s,\s/);
			forEach(values, function(value) {
			// it's always safe to consider only second values and omit `ms` values since
			// getComputedStyle will always handle the conversion for us
			if (value.charAt(value.length - 1) == 's') {
			value = value.substring(0, value.length - 1);
			}
			value = parseFloat(value) \|\| 0;
			maxValue = maxValue ? Math.max(value, maxValue) : value;
			});
			return maxValue;
			}

			function truthyTimingValue(val) {
			return val === 0 \|\| val != null;
			}

			function getCssTransitionDurationStyle(duration, applyOnlyDuration) {
			var style = TRANSITION_PROP;
			var value = duration + 's';
			if (applyOnlyDuration) {
			style += DURATION_KEY;
			} else {
			value += ' linear all';
			}
			return [style, value];
			}

			function createLocalCacheLookup() {
			var cache = Object.create(null);
			return {
			flush: function() {
			cache = Object.create(null);
			},

			count: function(key) {
			var entry = cache[key];
			return entry ? entry.total : 0;
			},

			get: function(key) {
			var entry = cache[key];
			return entry && entry.value;
			},

			put: function(key, value) {
			if (!cache[key]) {
			cache[key] = { total: 1, value: value };
			} else {
			cache[key].total++;
			}
			}
			};
			}

			// we do not reassign an already present style value since
			// if we detect the style property value again we may be
			// detecting styles that were added via the `from` styles.
			// We make use of `isDefined` here since an empty string
			// or null value (which is what getPropertyValue will return
			// for a non-existing style) will still be marked as a valid
			// value for the style (a falsy value implies that the style
			// is to be removed at the end of the animation). If we had a simple
			// "OR" statement then it would not be enough to catch that.
			function registerRestorableStyles(backup, node, properties) {
			forEach(properties, function(prop) {
			backup[prop] = isDefined(backup[prop])
			? backup[prop]
			: node.style.getPropertyValue(prop);
			});
			}

			var $AnimateCssProvider = ['$animateProvider', function($animateProvider) {
			var gcsLookup = createLocalCacheLookup();
			var gcsStaggerLookup = createLocalCacheLookup();

			this.$get = ['$window', '$$jqLite', '$$AnimateRunner', '$timeout',
			'$$forceReflow', '$sniffer', '$$rAFScheduler', '$$animateQueue',
			function($window, $$jqLite, $$AnimateRunner, $timeout,
			$$forceReflow, $sniffer, $$rAFScheduler, $$animateQueue) {

			var applyAnimationClasses = applyAnimationClassesFactory($$jqLite);

			var parentCounter = 0;
			function gcsHashFn(node, extraClasses) {
			var KEY = "$$ngAnimateParentKey";
			var parentNode = node.parentNode;
			var parentID = parentNode[KEY] \|\| (parentNode[KEY] = ++parentCounter);
			return parentID + '-' + node.getAttribute('class') + '-' + extraClasses;
			}

			function computeCachedCssStyles(node, className, cacheKey, properties) {
			var timings = gcsLookup.get(cacheKey);

			if (!timings) {
			timings = computeCssStyles($window, node, properties);
			if (timings.animationIterationCount === 'infinite') {
			timings.animationIterationCount = 1;
			}
			}

			// we keep putting this in multiple times even though the value and the cacheKey are the same
			// because we're keeping an internal tally of how many duplicate animations are detected.
			gcsLookup.put(cacheKey, timings);
			return timings;
			}

			function computeCachedCssStaggerStyles(node, className, cacheKey, properties) {
			var stagger;

			// if we have one or more existing matches of matching elements
			// containing the same parent + CSS styles (which is how cacheKey works)
			// then staggering is possible
			if (gcsLookup.count(cacheKey) > 0) {
			stagger = gcsStaggerLookup.get(cacheKey);

			if (!stagger) {
			var staggerClassName = pendClasses(className, '-stagger');

			$$jqLite.addClass(node, staggerClassName);

			stagger = computeCssStyles($window, node, properties);

			// force the conversion of a null value to zero incase not set
			stagger.animationDuration = Math.max(stagger.animationDuration, 0);
			stagger.transitionDuration = Math.max(stagger.transitionDuration, 0);

			$$jqLite.removeClass(node, staggerClassName);

			gcsStaggerLookup.put(cacheKey, stagger);
			}
			}

			return stagger \|\| {};
			}

			var cancelLastRAFRequest;
			var rafWaitQueue = [];
			function waitUntilQuiet(callback) {
			rafWaitQueue.push(callback);
			$$rAFScheduler.waitUntilQuiet(function() {
			gcsLookup.flush();
			gcsStaggerLookup.flush();

			// DO NOT REMOVE THIS LINE OR REFACTOR OUT THE `pageWidth` variable.
			// PLEASE EXAMINE THE `$$forceReflow` service to understand why.
			var pageWidth = $$forceReflow();

			// we use a for loop to ensure that if the queue is changed
			// during this looping then it will consider new requests
			for (var i = 0; i < rafWaitQueue.length; i++) {
			rafWaitQueue[i](pageWidth);
			}
			rafWaitQueue.length = 0;
			});
			}

			function computeTimings(node, className, cacheKey) {
			var timings = computeCachedCssStyles(node, className, cacheKey, DETECT_CSS_PROPERTIES);
			var aD = timings.animationDelay;
			var tD = timings.transitionDelay;
			timings.maxDelay = aD && tD
			? Math.max(aD, tD)
			: (aD \|\| tD);
			timings.maxDuration = Math.max(
			timings.animationDuration * timings.animationIterationCount,
			timings.transitionDuration);

			return timings;
			}

			return function init(element, initialOptions) {
			// all of the animation functions should create
			// a copy of the options data, however, if a
			// parent service has already created a copy then
			// we should stick to using that
			var options = initialOptions \|\| {};
			if (!options.$$prepared) {
			options = prepareAnimationOptions(copy(options));
			}

			var restoreStyles = {};
			var node = getDomNode(element);
			if (!node
			\|\| !node.parentNode
			\|\| !$$animateQueue.enabled()) {
			return closeAndReturnNoopAnimator();
			}

			var temporaryStyles = [];
			var classes = element.attr('class');
			var styles = packageStyles(options);
			var animationClosed;
			var animationPaused;
			var animationCompleted;
			var runner;
			var runnerHost;
			var maxDelay;
			var maxDelayTime;
			var maxDuration;
			var maxDurationTime;
			var startTime;
			var events = [];

			if (options.duration === 0 \|\| (!$sniffer.animations && !$sniffer.transitions)) {
			return closeAndReturnNoopAnimator();
			}

			var method = options.event && isArray(options.event)
			? options.event.join(' ')
			: options.event;

			var isStructural = method && options.structural;
			var structuralClassName = '';
			var addRemoveClassName = '';

			if (isStructural) {
			structuralClassName = pendClasses(method, EVENT_CLASS_PREFIX, true);
			} else if (method) {
			structuralClassName = method;
			}

			if (options.addClass) {
			addRemoveClassName += pendClasses(options.addClass, ADD_CLASS_SUFFIX);
			}

			if (options.removeClass) {
			if (addRemoveClassName.length) {
			addRemoveClassName += ' ';
			}
			addRemoveClassName += pendClasses(options.removeClass, REMOVE_CLASS_SUFFIX);
			}

			// there may be a situation where a structural animation is combined together
			// with CSS classes that need to resolve before the animation is computed.
			// However this means that there is no explicit CSS code to block the animation
			// from happening (by setting 0s none in the class name). If this is the case
			// we need to apply the classes before the first rAF so we know to continue if
			// there actually is a detected transition or keyframe animation
			if (options.applyClassesEarly && addRemoveClassName.length) {
			applyAnimationClasses(element, options);
			}

			var preparationClasses = [structuralClassName, addRemoveClassName].join(' ').trim();
			var fullClassName = classes + ' ' + preparationClasses;
			var activeClasses = pendClasses(preparationClasses, ACTIVE_CLASS_SUFFIX);
			var hasToStyles = styles.to && Object.keys(styles.to).length > 0;
			var containsKeyframeAnimation = (options.keyframeStyle \|\| '').length > 0;

			// there is no way we can trigger an animation if no styles and
			// no classes are being applied which would then trigger a transition,
			// unless there a is raw keyframe value that is applied to the element.
			if (!containsKeyframeAnimation
			&& !hasToStyles
			&& !preparationClasses) {
			return closeAndReturnNoopAnimator();
			}

			var cacheKey, stagger;
			if (options.stagger > 0) {
			var staggerVal = parseFloat(options.stagger);
			stagger = {
			transitionDelay: staggerVal,
			animationDelay: staggerVal,
			transitionDuration: 0,
			animationDuration: 0
			};
			} else {
			cacheKey = gcsHashFn(node, fullClassName);
			stagger = computeCachedCssStaggerStyles(node, preparationClasses, cacheKey, DETECT_STAGGER_CSS_PROPERTIES);
			}

			if (!options.$$skipPreparationClasses) {
			$$jqLite.addClass(element, preparationClasses);
			}

			var applyOnlyDuration;

			if (options.transitionStyle) {
			var transitionStyle = [TRANSITION_PROP, options.transitionStyle];
			applyInlineStyle(node, transitionStyle);
			temporaryStyles.push(transitionStyle);
			}

			if (options.duration >= 0) {
			applyOnlyDuration = node.style[TRANSITION_PROP].length > 0;
			var durationStyle = getCssTransitionDurationStyle(options.duration, applyOnlyDuration);

			// we set the duration so that it will be picked up by getComputedStyle later
			applyInlineStyle(node, durationStyle);
			temporaryStyles.push(durationStyle);
			}

			if (options.keyframeStyle) {
			var keyframeStyle = [ANIMATION_PROP, options.keyframeStyle];
			applyInlineStyle(node, keyframeStyle);
			temporaryStyles.push(keyframeStyle);
			}

			var itemIndex = stagger
			? options.staggerIndex >= 0
			? options.staggerIndex
			: gcsLookup.count(cacheKey)
			: 0;

			var isFirst = itemIndex === 0;

			// this is a pre-emptive way of forcing the setup classes to be added and applied INSTANTLY
			// without causing any combination of transitions to kick in. By adding a negative delay value
			// it forces the setup class' transition to end immediately. We later then remove the negative
			// transition delay to allow for the transition to naturally do it's thing. The beauty here is
			// that if there is no transition defined then nothing will happen and this will also allow
			// other transitions to be stacked on top of each other without any chopping them out.
			if (isFirst && !options.skipBlocking) {
			blockTransitions(node, SAFE_FAST_FORWARD_DURATION_VALUE);
			}

			var timings = computeTimings(node, fullClassName, cacheKey);
			var relativeDelay = timings.maxDelay;
			maxDelay = Math.max(relativeDelay, 0);
			maxDuration = timings.maxDuration;

			var flags = {};
			flags.hasTransitions = timings.transitionDuration > 0;
			flags.hasAnimations = timings.animationDuration > 0;
			flags.hasTransitionAll = flags.hasTransitions && timings.transitionProperty == 'all';
			flags.applyTransitionDuration = hasToStyles && (
			(flags.hasTransitions && !flags.hasTransitionAll)
			\|\| (flags.hasAnimations && !flags.hasTransitions));
			flags.applyAnimationDuration = options.duration && flags.hasAnimations;
			flags.applyTransitionDelay = truthyTimingValue(options.delay) && (flags.applyTransitionDuration \|\| flags.hasTransitions);
			flags.applyAnimationDelay = truthyTimingValue(options.delay) && flags.hasAnimations;
			flags.recalculateTimingStyles = addRemoveClassName.length > 0;

			if (flags.applyTransitionDuration \|\| flags.applyAnimationDuration) {
			maxDuration = options.duration ? parseFloat(options.duration) : maxDuration;

			if (flags.applyTransitionDuration) {
			flags.hasTransitions = true;
			timings.transitionDuration = maxDuration;
			applyOnlyDuration = node.style[TRANSITION_PROP + PROPERTY_KEY].length > 0;
			temporaryStyles.push(getCssTransitionDurationStyle(maxDuration, applyOnlyDuration));
			}

			if (flags.applyAnimationDuration) {
			flags.hasAnimations = true;
			timings.animationDuration = maxDuration;
			temporaryStyles.push(getCssKeyframeDurationStyle(maxDuration));
			}
			}

			if (maxDuration === 0 && !flags.recalculateTimingStyles) {
			return closeAndReturnNoopAnimator();
			}

			if (options.delay != null) {
			var delayStyle;
			if (typeof options.delay !== "boolean") {
			delayStyle = parseFloat(options.delay);
			// number in options.delay means we have to recalculate the delay for the closing timeout
			maxDelay = Math.max(delayStyle, 0);
			}

			if (flags.applyTransitionDelay) {
			temporaryStyles.push(getCssDelayStyle(delayStyle));
			}

			if (flags.applyAnimationDelay) {
			temporaryStyles.push(getCssDelayStyle(delayStyle, true));
			}
			}

			// we need to recalculate the delay value since we used a pre-emptive negative
			// delay value and the delay value is required for the final event checking. This
			// property will ensure that this will happen after the RAF phase has passed.
			if (options.duration == null && timings.transitionDuration > 0) {
			flags.recalculateTimingStyles = flags.recalculateTimingStyles \|\| isFirst;
			}

			maxDelayTime = maxDelay * ONE_SECOND;
			maxDurationTime = maxDuration * ONE_SECOND;
			if (!options.skipBlocking) {
			flags.blockTransition = timings.transitionDuration > 0;
			flags.blockKeyframeAnimation = timings.animationDuration > 0 &&
			stagger.animationDelay > 0 &&
			stagger.animationDuration === 0;
			}

			if (options.from) {
			if (options.cleanupStyles) {
			registerRestorableStyles(restoreStyles, node, Object.keys(options.from));
			}
			applyAnimationFromStyles(element, options);
			}

			if (flags.blockTransition \|\| flags.blockKeyframeAnimation) {
			applyBlocking(maxDuration);
			} else if (!options.skipBlocking) {
			blockTransitions(node, false);
			}

			// TODO(matsko): for 1.5 change this code to have an animator object for better debugging
			return {
			$$willAnimate: true,
			end: endFn,
			start: function() {
			if (animationClosed) return;

			runnerHost = {
			end: endFn,
			cancel: cancelFn,
			resume: null, //this will be set during the start() phase
			pause: null
			};

			runner = new $$AnimateRunner(runnerHost);

			waitUntilQuiet(start);

			// we don't have access to pause/resume the animation
			// since it hasn't run yet. AnimateRunner will therefore
			// set noop functions for resume and pause and they will
			// later be overridden once the animation is triggered
			return runner;
			}
			};

			function endFn() {
			close();
			}

			function cancelFn() {
			close(true);
			}

			function close(rejected) { // jshint ignore:line
			// if the promise has been called already then we shouldn't close
			// the animation again
			if (animationClosed \|\| (animationCompleted && animationPaused)) return;
			animationClosed = true;
			animationPaused = false;

			if (!options.$$skipPreparationClasses) {
			$$jqLite.removeClass(element, preparationClasses);
			}
			$$jqLite.removeClass(element, activeClasses);

			blockKeyframeAnimations(node, false);
			blockTransitions(node, false);

			forEach(temporaryStyles, function(entry) {
			// There is only one way to remove inline style properties entirely from elements.
			// By using `removeProperty` this works, but we need to convert camel-cased CSS
			// styles down to hyphenated values.
			node.style[entry[0]] = '';
			});

			applyAnimationClasses(element, options);
			applyAnimationStyles(element, options);

			if (Object.keys(restoreStyles).length) {
			forEach(restoreStyles, function(value, prop) {
			value ? node.style.setProperty(prop, value)
			: node.style.removeProperty(prop);
			});
			}

			// the reason why we have this option is to allow a synchronous closing callback
			// that is fired as SOON as the animation ends (when the CSS is removed) or if
			// the animation never takes off at all. A good example is a leave animation since
			// the element must be removed just after the animation is over or else the element
			// will appear on screen for one animation frame causing an overbearing flicker.
			if (options.onDone) {
			options.onDone();
			}

			if (events && events.length) {
			// Remove the transitionend / animationend listener(s)
			element.off(events.join(' '), onAnimationProgress);
			}

			//Cancel the fallback closing timeout and remove the timer data
			var animationTimerData = element.data(ANIMATE_TIMER_KEY);
			if (animationTimerData) {
			$timeout.cancel(animationTimerData[0].timer);
			element.removeData(ANIMATE_TIMER_KEY);
			}

			// if the preparation function fails then the promise is not setup
			if (runner) {
			runner.complete(!rejected);
			}
			}

			function applyBlocking(duration) {
			if (flags.blockTransition) {
			blockTransitions(node, duration);
			}

			if (flags.blockKeyframeAnimation) {
			blockKeyframeAnimations(node, !!duration);
			}
			}

			function closeAndReturnNoopAnimator() {
			runner = new $$AnimateRunner({
			end: endFn,
			cancel: cancelFn
			});

			// should flush the cache animation
			waitUntilQuiet(noop);
			close();

			return {
			$$willAnimate: false,
			start: function() {
			return runner;
			},
			end: endFn
			};
			}

			function onAnimationProgress(event) {
			event.stopPropagation();
			var ev = event.originalEvent \|\| event;

			// we now always use `Date.now()` due to the recent changes with
			// event.timeStamp in Firefox, Webkit and Chrome (see #13494 for more info)
			var timeStamp = ev.$manualTimeStamp \|\| Date.now();

			/* Firefox (or possibly just Gecko) likes to not round values up
			* when a ms measurement is used for the animation */
			var elapsedTime = parseFloat(ev.elapsedTime.toFixed(ELAPSED_TIME_MAX_DECIMAL_PLACES));

			/* $manualTimeStamp is a mocked timeStamp value which is set
			* within browserTrigger(). This is only here so that tests can
			* mock animations properly. Real events fallback to event.timeStamp,
			* or, if they don't, then a timeStamp is automatically created for them.
			* We're checking to see if the timeStamp surpasses the expected delay,
			* but we're using elapsedTime instead of the timeStamp on the 2nd
			* pre-condition since animationPauseds sometimes close off early */
			if (Math.max(timeStamp - startTime, 0) >= maxDelayTime && elapsedTime >= maxDuration) {
			// we set this flag to ensure that if the transition is paused then, when resumed,
			// the animation will automatically close itself since transitions cannot be paused.
			animationCompleted = true;
			close();
			}
			}

			function start() {
			if (animationClosed) return;
			if (!node.parentNode) {
			close();
			return;
			}

			// even though we only pause keyframe animations here the pause flag
			// will still happen when transitions are used. Only the transition will
			// not be paused since that is not possible. If the animation ends when
			// paused then it will not complete until unpaused or cancelled.
			var playPause = function(playAnimation) {
			if (!animationCompleted) {
			animationPaused = !playAnimation;
			if (timings.animationDuration) {
			var value = blockKeyframeAnimations(node, animationPaused);
			animationPaused
			? temporaryStyles.push(value)
			: removeFromArray(temporaryStyles, value);
			}
			} else if (animationPaused && playAnimation) {
			animationPaused = false;
			close();
			}
			};

			// checking the stagger duration prevents an accidentally cascade of the CSS delay style
			// being inherited from the parent. If the transition duration is zero then we can safely
			// rely that the delay value is an intentional stagger delay style.
			var maxStagger = itemIndex > 0
			&& ((timings.transitionDuration && stagger.transitionDuration === 0) \|\|
			(timings.animationDuration && stagger.animationDuration === 0))
			&& Math.max(stagger.animationDelay, stagger.transitionDelay);
			if (maxStagger) {
			$timeout(triggerAnimationStart,
			Math.floor(maxStagger * itemIndex * ONE_SECOND),
			false);
			} else {
			triggerAnimationStart();
			}

			// this will decorate the existing promise runner with pause/resume methods
			runnerHost.resume = function() {
			playPause(true);
			};

			runnerHost.pause = function() {
			playPause(false);
			};

			function triggerAnimationStart() {
			// just incase a stagger animation kicks in when the animation
			// itself was cancelled entirely
			if (animationClosed) return;

			applyBlocking(false);

			forEach(temporaryStyles, function(entry) {
			var key = entry[0];
			var value = entry[1];
			node.style[key] = value;
			});

			applyAnimationClasses(element, options);
			$$jqLite.addClass(element, activeClasses);

			if (flags.recalculateTimingStyles) {
			fullClassName = node.className + ' ' + preparationClasses;
			cacheKey = gcsHashFn(node, fullClassName);

			timings = computeTimings(node, fullClassName, cacheKey);
			relativeDelay = timings.maxDelay;
			maxDelay = Math.max(relativeDelay, 0);
			maxDuration = timings.maxDuration;

			if (maxDuration === 0) {
			close();
			return;
			}

			flags.hasTransitions = timings.transitionDuration > 0;
			flags.hasAnimations = timings.animationDuration > 0;
			}

			if (flags.applyAnimationDelay) {
			relativeDelay = typeof options.delay !== "boolean" && truthyTimingValue(options.delay)
			? parseFloat(options.delay)
			: relativeDelay;

			maxDelay = Math.max(relativeDelay, 0);
			timings.animationDelay = relativeDelay;
			delayStyle = getCssDelayStyle(relativeDelay, true);
			temporaryStyles.push(delayStyle);
			node.style[delayStyle[0]] = delayStyle[1];
			}

			maxDelayTime = maxDelay * ONE_SECOND;
			maxDurationTime = maxDuration * ONE_SECOND;

			if (options.easing) {
			var easeProp, easeVal = options.easing;
			if (flags.hasTransitions) {
			easeProp = TRANSITION_PROP + TIMING_KEY;
			temporaryStyles.push([easeProp, easeVal]);
			node.style[easeProp] = easeVal;
			}
			if (flags.hasAnimations) {
			easeProp = ANIMATION_PROP + TIMING_KEY;
			temporaryStyles.push([easeProp, easeVal]);
			node.style[easeProp] = easeVal;
			}
			}

			if (timings.transitionDuration) {
			events.push(TRANSITIONEND_EVENT);
			}

			if (timings.animationDuration) {
			events.push(ANIMATIONEND_EVENT);
			}

			startTime = Date.now();
			var timerTime = maxDelayTime + CLOSING_TIME_BUFFER * maxDurationTime;
			var endTime = startTime + timerTime;

			var animationsData = element.data(ANIMATE_TIMER_KEY) \|\| [];
			var setupFallbackTimer = true;
			if (animationsData.length) {
			var currentTimerData = animationsData[0];
			setupFallbackTimer = endTime > currentTimerData.expectedEndTime;
			if (setupFallbackTimer) {
			$timeout.cancel(currentTimerData.timer);
			} else {
			animationsData.push(close);
			}
			}

			if (setupFallbackTimer) {
			var timer = $timeout(onAnimationExpired, timerTime, false);
			animationsData[0] = {
			timer: timer,
			expectedEndTime: endTime
			};
			animationsData.push(close);
			element.data(ANIMATE_TIMER_KEY, animationsData);
			}

			if (events.length) {
			element.on(events.join(' '), onAnimationProgress);
			}

			if (options.to) {
			if (options.cleanupStyles) {
			registerRestorableStyles(restoreStyles, node, Object.keys(options.to));
			}
			applyAnimationToStyles(element, options);
			}
			}

			function onAnimationExpired() {
			var animationsData = element.data(ANIMATE_TIMER_KEY);

			// this will be false in the event that the element was
			// removed from the DOM (via a leave animation or something
			// similar)
			if (animationsData) {
			for (var i = 1; i < animationsData.length; i++) {
			animationsData[i]();
			}
			element.removeData(ANIMATE_TIMER_KEY);
			}
			}
			}
			};
			}];
			}];

			var $$AnimateCssDriverProvider = ['$$animationProvider', function($$animationProvider) {
			$$animationProvider.drivers.push('$$animateCssDriver');

			var NG_ANIMATE_SHIM_CLASS_NAME = 'ng-animate-shim';
			var NG_ANIMATE_ANCHOR_CLASS_NAME = 'ng-anchor';

			var NG_OUT_ANCHOR_CLASS_NAME = 'ng-anchor-out';
			var NG_IN_ANCHOR_CLASS_NAME = 'ng-anchor-in';

			function isDocumentFragment(node) {
			return node.parentNode && node.parentNode.nodeType === 11;
			}

			this.$get = ['$animateCss', '$rootScope', '$$AnimateRunner', '$rootElement', '$sniffer', '$$jqLite', '$document',
			function($animateCss, $rootScope, $$AnimateRunner, $rootElement, $sniffer, $$jqLite, $document) {

			// only browsers that support these properties can render animations
			if (!$sniffer.animations && !$sniffer.transitions) return noop;

			var bodyNode = $document[0].body;
			var rootNode = getDomNode($rootElement);

			var rootBodyElement = jqLite(
			// this is to avoid using something that exists outside of the body
			// we also special case the doc fragment case because our unit test code
			// appends the $rootElement to the body after the app has been bootstrapped
			isDocumentFragment(rootNode) \|\| bodyNode.contains(rootNode) ? rootNode : bodyNode
			);

			var applyAnimationClasses = applyAnimationClassesFactory($$jqLite);

			return function initDriverFn(animationDetails) {
			return animationDetails.from && animationDetails.to
			? prepareFromToAnchorAnimation(animationDetails.from,
			animationDetails.to,
			animationDetails.classes,
			animationDetails.anchors)
			: prepareRegularAnimation(animationDetails);
			};

			function filterCssClasses(classes) {
			//remove all the `ng-` stuff
			return classes.replace(/\bng-\S+\b/g, '');
			}

			function getUniqueValues(a, b) {
			if (isString(a)) a = a.split(' ');
			if (isString(b)) b = b.split(' ');
			return a.filter(function(val) {
			return b.indexOf(val) === -1;
			}).join(' ');
			}

			function prepareAnchoredAnimation(classes, outAnchor, inAnchor) {
			var clone = jqLite(getDomNode(outAnchor).cloneNode(true));
			var startingClasses = filterCssClasses(getClassVal(clone));

			outAnchor.addClass(NG_ANIMATE_SHIM_CLASS_NAME);
			inAnchor.addClass(NG_ANIMATE_SHIM_CLASS_NAME);

			clone.addClass(NG_ANIMATE_ANCHOR_CLASS_NAME);

			rootBodyElement.append(clone);

			var animatorIn, animatorOut = prepareOutAnimation();

			// the user may not end up using the `out` animation and
			// only making use of the `in` animation or vice-versa.
			// In either case we should allow this and not assume the
			// animation is over unless both animations are not used.
			if (!animatorOut) {
			animatorIn = prepareInAnimation();
			if (!animatorIn) {
			return end();
			}
			}

			var startingAnimator = animatorOut \|\| animatorIn;

			return {
			start: function() {
			var runner;

			var currentAnimation = startingAnimator.start();
			currentAnimation.done(function() {
			currentAnimation = null;
			if (!animatorIn) {
			animatorIn = prepareInAnimation();
			if (animatorIn) {
			currentAnimation = animatorIn.start();
			currentAnimation.done(function() {
			currentAnimation = null;
			end();
			runner.complete();
			});
			return currentAnimation;
			}
			}
			// in the event that there is no `in` animation
			end();
			runner.complete();
			});

			runner = new $$AnimateRunner({
			end: endFn,
			cancel: endFn
			});

			return runner;

			function endFn() {
			if (currentAnimation) {
			currentAnimation.end();
			}
			}
			}
			};

			function calculateAnchorStyles(anchor) {
			var styles = {};

			var coords = getDomNode(anchor).getBoundingClientRect();

			// we iterate directly since safari messes up and doesn't return
			// all the keys for the coords object when iterated
			forEach(['width','height','top','left'], function(key) {
			var value = coords[key];
			switch (key) {
			case 'top':
			value += bodyNode.scrollTop;
			break;
			case 'left':
			value += bodyNode.scrollLeft;
			break;
			}
			styles[key] = Math.floor(value) + 'px';
			});
			return styles;
			}

			function prepareOutAnimation() {
			var animator = $animateCss(clone, {
			addClass: NG_OUT_ANCHOR_CLASS_NAME,
			delay: true,
			from: calculateAnchorStyles(outAnchor)
			});

			// read the comment within `prepareRegularAnimation` to understand
			// why this check is necessary
			return animator.$$willAnimate ? animator : null;
			}

			function getClassVal(element) {
			return element.attr('class') \|\| '';
			}

			function prepareInAnimation() {
			var endingClasses = filterCssClasses(getClassVal(inAnchor));
			var toAdd = getUniqueValues(endingClasses, startingClasses);
			var toRemove = getUniqueValues(startingClasses, endingClasses);

			var animator = $animateCss(clone, {
			to: calculateAnchorStyles(inAnchor),
			addClass: NG_IN_ANCHOR_CLASS_NAME + ' ' + toAdd,
			removeClass: NG_OUT_ANCHOR_CLASS_NAME + ' ' + toRemove,
			delay: true
			});

			// read the comment within `prepareRegularAnimation` to understand
			// why this check is necessary
			return animator.$$willAnimate ? animator : null;
			}

			function end() {
			clone.remove();
			outAnchor.removeClass(NG_ANIMATE_SHIM_CLASS_NAME);
			inAnchor.removeClass(NG_ANIMATE_SHIM_CLASS_NAME);
			}
			}

			function prepareFromToAnchorAnimation(from, to, classes, anchors) {
			var fromAnimation = prepareRegularAnimation(from, noop);
			var toAnimation = prepareRegularAnimation(to, noop);

			var anchorAnimations = [];
			forEach(anchors, function(anchor) {
			var outElement = anchor['out'];
			var inElement = anchor['in'];
			var animator = prepareAnchoredAnimation(classes, outElement, inElement);
			if (animator) {
			anchorAnimations.push(animator);
			}
			});

			// no point in doing anything when there are no elements to animate
			if (!fromAnimation && !toAnimation && anchorAnimations.length === 0) return;

			return {
			start: function() {
			var animationRunners = [];

			if (fromAnimation) {
			animationRunners.push(fromAnimation.start());
			}

			if (toAnimation) {
			animationRunners.push(toAnimation.start());
			}

			forEach(anchorAnimations, function(animation) {
			animationRunners.push(animation.start());
			});

			var runner = new $$AnimateRunner({
			end: endFn,
			cancel: endFn // CSS-driven animations cannot be cancelled, only ended
			});

			$$AnimateRunner.all(animationRunners, function(status) {
			runner.complete(status);
			});

			return runner;

			function endFn() {
			forEach(animationRunners, function(runner) {
			runner.end();
			});
			}
			}
			};
			}

			function prepareRegularAnimation(animationDetails) {
			var element = animationDetails.element;
			var options = animationDetails.options \|\| {};

			if (animationDetails.structural) {
			options.event = animationDetails.event;
			options.structural = true;
			options.applyClassesEarly = true;

			// we special case the leave animation since we want to ensure that
			// the element is removed as soon as the animation is over. Otherwise
			// a flicker might appear or the element may not be removed at all
			if (animationDetails.event === 'leave') {
			options.onDone = options.domOperation;
			}
			}

			// We assign the preparationClasses as the actual animation event since
			// the internals of $animateCss will just suffix the event token values
			// with `-active` to trigger the animation.
			if (options.preparationClasses) {
			options.event = concatWithSpace(options.event, options.preparationClasses);
			}

			var animator = $animateCss(element, options);

			// the driver lookup code inside of $$animation attempts to spawn a
			// driver one by one until a driver returns a.$$willAnimate animator object.
			// $animateCss will always return an object, however, it will pass in
			// a flag as a hint as to whether an animation was detected or not
			return animator.$$willAnimate ? animator : null;
			}
			}];
			}];

			// TODO(matsko): use caching here to speed things up for detection
			// TODO(matsko): add documentation
			// by the time...

			var $$AnimateJsProvider = ['$animateProvider', function($animateProvider) {
			this.$get = ['$injector', '$$AnimateRunner', '$$jqLite',
			function($injector, $$AnimateRunner, $$jqLite) {

			var applyAnimationClasses = applyAnimationClassesFactory($$jqLite);
			// $animateJs(element, 'enter');
			return function(element, event, classes, options) {
			var animationClosed = false;

			// the `classes` argument is optional and if it is not used
			// then the classes will be resolved from the element's className
			// property as well as options.addClass/options.removeClass.
			if (arguments.length === 3 && isObject(classes)) {
			options = classes;
			classes = null;
			}

			options = prepareAnimationOptions(options);
			if (!classes) {
			classes = element.attr('class') \|\| '';
			if (options.addClass) {
			classes += ' ' + options.addClass;
			}
			if (options.removeClass) {
			classes += ' ' + options.removeClass;
			}
			}

			var classesToAdd = options.addClass;
			var classesToRemove = options.removeClass;

			// the lookupAnimations function returns a series of animation objects that are
			// matched up with one or more of the CSS classes. These animation objects are
			// defined via the module.animation factory function. If nothing is detected then
			// we don't return anything which then makes $animation query the next driver.
			var animations = lookupAnimations(classes);
			var before, after;
			if (animations.length) {
			var afterFn, beforeFn;
			if (event == 'leave') {
			beforeFn = 'leave';
			afterFn = 'afterLeave'; // TODO(matsko): get rid of this
			} else {
			beforeFn = 'before' + event.charAt(0).toUpperCase() + event.substr(1);
			afterFn = event;
			}

			if (event !== 'enter' && event !== 'move') {
			before = packageAnimations(element, event, options, animations, beforeFn);
			}
			after = packageAnimations(element, event, options, animations, afterFn);
			}

			// no matching animations
			if (!before && !after) return;

			function applyOptions() {
			options.domOperation();
			applyAnimationClasses(element, options);
			}

			function close() {
			animationClosed = true;
			applyOptions();
			applyAnimationStyles(element, options);
			}

			var runner;

			return {
			$$willAnimate: true,
			end: function() {
			if (runner) {
			runner.end();
			} else {
			close();
			runner = new $$AnimateRunner();
			runner.complete(true);
			}
			return runner;
			},
			start: function() {
			if (runner) {
			return runner;
			}

			runner = new $$AnimateRunner();
			var closeActiveAnimations;
			var chain = [];

			if (before) {
			chain.push(function(fn) {
			closeActiveAnimations = before(fn);
			});
			}

			if (chain.length) {
			chain.push(function(fn) {
			applyOptions();
			fn(true);
			});
			} else {
			applyOptions();
			}

			if (after) {
			chain.push(function(fn) {
			closeActiveAnimations = after(fn);
			});
			}

			runner.setHost({
			end: function() {
			endAnimations();
			},
			cancel: function() {
			endAnimations(true);
			}
			});

			$$AnimateRunner.chain(chain, onComplete);
			return runner;

			function onComplete(success) {
			close(success);
			runner.complete(success);
			}

			function endAnimations(cancelled) {
			if (!animationClosed) {
			(closeActiveAnimations \|\| noop)(cancelled);
			onComplete(cancelled);
			}
			}
			}
			};

			function executeAnimationFn(fn, element, event, options, onDone) {
			var args;
			switch (event) {
			case 'animate':
			args = [element, options.from, options.to, onDone];
			break;

			case 'setClass':
			args = [element, classesToAdd, classesToRemove, onDone];
			break;

			case 'addClass':
			args = [element, classesToAdd, onDone];
			break;

			case 'removeClass':
			args = [element, classesToRemove, onDone];
			break;

			default:
			args = [element, onDone];
			break;
			}

			args.push(options);

			var value = fn.apply(fn, args);
			if (value) {
			if (isFunction(value.start)) {
			value = value.start();
			}

			if (value instanceof $$AnimateRunner) {
			value.done(onDone);
			} else if (isFunction(value)) {
			// optional onEnd / onCancel callback
			return value;
			}
			}

			return noop;
			}

			function groupEventedAnimations(element, event, options, animations, fnName) {
			var operations = [];
			forEach(animations, function(ani) {
			var animation = ani[fnName];
			if (!animation) return;

			// note that all of these animations will run in parallel
			operations.push(function() {
			var runner;
			var endProgressCb;

			var resolved = false;
			var onAnimationComplete = function(rejected) {
			if (!resolved) {
			resolved = true;
			(endProgressCb \|\| noop)(rejected);
			runner.complete(!rejected);
			}
			};

			runner = new $$AnimateRunner({
			end: function() {
			onAnimationComplete();
			},
			cancel: function() {
			onAnimationComplete(true);
			}
			});

			endProgressCb = executeAnimationFn(animation, element, event, options, function(result) {
			var cancelled = result === false;
			onAnimationComplete(cancelled);
			});

			return runner;
			});
			});

			return operations;
			}

			function packageAnimations(element, event, options, animations, fnName) {
			var operations = groupEventedAnimations(element, event, options, animations, fnName);
			if (operations.length === 0) {
			var a,b;
			if (fnName === 'beforeSetClass') {
			a = groupEventedAnimations(element, 'removeClass', options, animations, 'beforeRemoveClass');
			b = groupEventedAnimations(element, 'addClass', options, animations, 'beforeAddClass');
			} else if (fnName === 'setClass') {
			a = groupEventedAnimations(element, 'removeClass', options, animations, 'removeClass');
			b = groupEventedAnimations(element, 'addClass', options, animations, 'addClass');
			}

			if (a) {
			operations = operations.concat(a);
			}
			if (b) {
			operations = operations.concat(b);
			}
			}

			if (operations.length === 0) return;

			// TODO(matsko): add documentation
			return function startAnimation(callback) {
			var runners = [];
			if (operations.length) {
			forEach(operations, function(animateFn) {
			runners.push(animateFn());
			});
			}

			runners.length ? $$AnimateRunner.all(runners, callback) : callback();

			return function endFn(reject) {
			forEach(runners, function(runner) {
			reject ? runner.cancel() : runner.end();
			});
			};
			};
			}
			};

			function lookupAnimations(classes) {
			classes = isArray(classes) ? classes : classes.split(' ');
			var matches = [], flagMap = {};
			for (var i=0; i < classes.length; i++) {
			var klass = classes[i],
			animationFactory = $animateProvider.$$registeredAnimations[klass];
			if (animationFactory && !flagMap[klass]) {
			matches.push($injector.get(animationFactory));
			flagMap[klass] = true;
			}
			}
			return matches;
			}
			}];
			}];

			var $$AnimateJsDriverProvider = ['$$animationProvider', function($$animationProvider) {
			$$animationProvider.drivers.push('$$animateJsDriver');
			this.$get = ['$$animateJs', '$$AnimateRunner', function($$animateJs, $$AnimateRunner) {
			return function initDriverFn(animationDetails) {
			if (animationDetails.from && animationDetails.to) {
			var fromAnimation = prepareAnimation(animationDetails.from);
			var toAnimation = prepareAnimation(animationDetails.to);
			if (!fromAnimation && !toAnimation) return;

			return {
			start: function() {
			var animationRunners = [];

			if (fromAnimation) {
			animationRunners.push(fromAnimation.start());
			}

			if (toAnimation) {
			animationRunners.push(toAnimation.start());
			}

			$$AnimateRunner.all(animationRunners, done);

			var runner = new $$AnimateRunner({
			end: endFnFactory(),
			cancel: endFnFactory()
			});

			return runner;

			function endFnFactory() {
			return function() {
			forEach(animationRunners, function(runner) {
			// at this point we cannot cancel animations for groups just yet. 1.5+
			runner.end();
			});
			};
			}

			function done(status) {
			runner.complete(status);
			}
			}
			};
			} else {
			return prepareAnimation(animationDetails);
			}
			};

			function prepareAnimation(animationDetails) {
			// TODO(matsko): make sure to check for grouped animations and delegate down to normal animations
			var element = animationDetails.element;
			var event = animationDetails.event;
			var options = animationDetails.options;
			var classes = animationDetails.classes;
			return $$animateJs(element, event, classes, options);
			}
			}];
			}];

			var NG_ANIMATE_ATTR_NAME = 'data-ng-animate';
			var NG_ANIMATE_PIN_DATA = '$ngAnimatePin';
			var $$AnimateQueueProvider = ['$animateProvider', function($animateProvider) {
			var PRE_DIGEST_STATE = 1;
			var RUNNING_STATE = 2;
			var ONE_SPACE = ' ';

			var rules = this.rules = {
			skip: [],
			cancel: [],
			join: []
			};

			function makeTruthyCssClassMap(classString) {
			if (!classString) {
			return null;
			}

			var keys = classString.split(ONE_SPACE);
			var map = Object.create(null);

			forEach(keys, function(key) {
			map[key] = true;
			});
			return map;
			}

			function hasMatchingClasses(newClassString, currentClassString) {
			if (newClassString && currentClassString) {
			var currentClassMap = makeTruthyCssClassMap(currentClassString);
			return newClassString.split(ONE_SPACE).some(function(className) {
			return currentClassMap[className];
			});
			}
			}

			function isAllowed(ruleType, element, currentAnimation, previousAnimation) {
			return rules[ruleType].some(function(fn) {
			return fn(element, currentAnimation, previousAnimation);
			});
			}

			function hasAnimationClasses(animation, and) {
			var a = (animation.addClass \|\| '').length > 0;
			var b = (animation.removeClass \|\| '').length > 0;
			return and ? a && b : a \|\| b;
			}

			rules.join.push(function(element, newAnimation, currentAnimation) {
			// if the new animation is class-based then we can just tack that on
			return !newAnimation.structural && hasAnimationClasses(newAnimation);
			});

			rules.skip.push(function(element, newAnimation, currentAnimation) {
			// there is no need to animate anything if no classes are being added and
			// there is no structural animation that will be triggered
			return !newAnimation.structural && !hasAnimationClasses(newAnimation);
			});

			rules.skip.push(function(element, newAnimation, currentAnimation) {
			// why should we trigger a new structural animation if the element will
			// be removed from the DOM anyway?
			return currentAnimation.event == 'leave' && newAnimation.structural;
			});

			rules.skip.push(function(element, newAnimation, currentAnimation) {
			// if there is an ongoing current animation then don't even bother running the class-based animation
			return currentAnimation.structural && currentAnimation.state === RUNNING_STATE && !newAnimation.structural;
			});

			rules.cancel.push(function(element, newAnimation, currentAnimation) {
			// there can never be two structural animations running at the same time
			return currentAnimation.structural && newAnimation.structural;
			});

			rules.cancel.push(function(element, newAnimation, currentAnimation) {
			// if the previous animation is already running, but the new animation will
			// be triggered, but the new animation is structural
			return currentAnimation.state === RUNNING_STATE && newAnimation.structural;
			});

			rules.cancel.push(function(element, newAnimation, currentAnimation) {
			// cancel the animation if classes added / removed in both animation cancel each other out,
			// but only if the current animation isn't structural

			if (currentAnimation.structural) return false;

			var nA = newAnimation.addClass;
			var nR = newAnimation.removeClass;
			var cA = currentAnimation.addClass;
			var cR = currentAnimation.removeClass;

			// early detection to save the global CPU shortage :)
			if ((isUndefined(nA) && isUndefined(nR)) \|\| (isUndefined(cA) && isUndefined(cR))) {
			return false;
			}

			return hasMatchingClasses(nA, cR) \|\| hasMatchingClasses(nR, cA);
			});

			this.$get = ['$$rAF', '$rootScope', '$rootElement', '$document', '$$HashMap',
			'$$animation', '$$AnimateRunner', '$templateRequest', '$$jqLite', '$$forceReflow',
			function($$rAF, $rootScope, $rootElement, $document, $$HashMap,
			$$animation, $$AnimateRunner, $templateRequest, $$jqLite, $$forceReflow) {

			var activeAnimationsLookup = new $$HashMap();
			var disabledElementsLookup = new $$HashMap();
			var animationsEnabled = null;

			function postDigestTaskFactory() {
			var postDigestCalled = false;
			return function(fn) {
			// we only issue a call to postDigest before
			// it has first passed. This prevents any callbacks
			// from not firing once the animation has completed
			// since it will be out of the digest cycle.
			if (postDigestCalled) {
			fn();
			} else {
			$rootScope.$$postDigest(function() {
			postDigestCalled = true;
			fn();
			});
			}
			};
			}

			// Wait until all directive and route-related templates are downloaded and
			// compiled. The $templateRequest.totalPendingRequests variable keeps track of
			// all of the remote templates being currently downloaded. If there are no
			// templates currently downloading then the watcher will still fire anyway.
			var deregisterWatch = $rootScope.$watch(
			function() { return $templateRequest.totalPendingRequests === 0; },
			function(isEmpty) {
			if (!isEmpty) return;
			deregisterWatch();

			// Now that all templates have been downloaded, $animate will wait until
			// the post digest queue is empty before enabling animations. By having two
			// calls to $postDigest calls we can ensure that the flag is enabled at the
			// very end of the post digest queue. Since all of the animations in $animate
			// use $postDigest, it's important that the code below executes at the end.
			// This basically means that the page is fully downloaded and compiled before
			// any animations are triggered.
			$rootScope.$$postDigest(function() {
			$rootScope.$$postDigest(function() {
			// we check for null directly in the event that the application already called
			// .enabled() with whatever arguments that it provided it with
			if (animationsEnabled === null) {
			animationsEnabled = true;
			}
			});
			});
			}
			);

			var callbackRegistry = Object.create(null);

			// remember that the classNameFilter is set during the provider/config
			// stage therefore we can optimize here and setup a helper function
			var classNameFilter = $animateProvider.classNameFilter();
			var isAnimatableClassName = !classNameFilter
			? function() { return true; }
			: function(className) {
			return classNameFilter.test(className);
			};

			var applyAnimationClasses = applyAnimationClassesFactory($$jqLite);

			function normalizeAnimationDetails(element, animation) {
			return mergeAnimationDetails(element, animation, {});
			}

			// IE9-11 has no method "contains" in SVG element and in Node.prototype. Bug #10259.
			var contains = window.Node.prototype.contains \|\| function(arg) {
			// jshint bitwise: false
			return this === arg \|\| !!(this.compareDocumentPosition(arg) & 16);
			// jshint bitwise: true
			};

			function findCallbacks(parent, element, event) {
			var targetNode = getDomNode(element);
			var targetParentNode = getDomNode(parent);

			var matches = [];
			var entries = callbackRegistry[event];
			if (entries) {
			forEach(entries, function(entry) {
			if (contains.call(entry.node, targetNode)) {
			matches.push(entry.callback);
			} else if (event === 'leave' && contains.call(entry.node, targetParentNode)) {
			matches.push(entry.callback);
			}
			});
			}

			return matches;
			}

			function filterFromRegistry(list, matchContainer, matchCallback) {
			var containerNode = extractElementNode(matchContainer);
			return list.filter(function(entry) {
			var isMatch = entry.node === containerNode &&
			(!matchCallback \|\| entry.callback === matchCallback);
			return !isMatch;
			});
			}

			function cleanupEventListeners(phase, element) {
			if (phase === 'close' && !element[0].parentNode) {
			// If the element is not attached to a parentNode, it has been removed by
			// the domOperation, and we can safely remove the event callbacks
			$animate.off(element);
			}
			}

			var $animate = {
			on: function(event, container, callback) {
			var node = extractElementNode(container);
			callbackRegistry[event] = callbackRegistry[event] \|\| [];
			callbackRegistry[event].push({
			node: node,
			callback: callback
			});

			// Remove the callback when the element is removed from the DOM
			jqLite(container).on('$destroy', function() {
			var animationDetails = activeAnimationsLookup.get(node);

			if (!animationDetails) {
			// If there's an animation ongoing, the callback calling code will remove
			// the event listeners. If we'd remove here, the callbacks would be removed
			// before the animation ends
			$animate.off(event, container, callback);
			}
			});
			},

			off: function(event, container, callback) {
			if (arguments.length === 1 && !isString(arguments[0])) {
			container = arguments[0];
			for (var eventType in callbackRegistry) {
			callbackRegistry[eventType] = filterFromRegistry(callbackRegistry[eventType], container);
			}

			return;
			}

			var entries = callbackRegistry[event];
			if (!entries) return;

			callbackRegistry[event] = arguments.length === 1
			? null
			: filterFromRegistry(entries, container, callback);
			},

			pin: function(element, parentElement) {
			assertArg(isElement(element), 'element', 'not an element');
			assertArg(isElement(parentElement), 'parentElement', 'not an element');
			element.data(NG_ANIMATE_PIN_DATA, parentElement);
			},

			push: function(element, event, options, domOperation) {
			options = options \|\| {};
			options.domOperation = domOperation;
			return queueAnimation(element, event, options);
			},

			// this method has four signatures:
			// () - global getter
			// (bool) - global setter
			// (element) - element getter
			// (element, bool) - element setter<F37>
			enabled: function(element, bool) {
			var argCount = arguments.length;

			if (argCount === 0) {
			// () - Global getter
			bool = !!animationsEnabled;
			} else {
			var hasElement = isElement(element);

			if (!hasElement) {
			// (bool) - Global setter
			bool = animationsEnabled = !!element;
			} else {
			var node = getDomNode(element);

			if (argCount === 1) {
			// (element) - Element getter
			bool = !disabledElementsLookup.get(node);
			} else {
			// (element, bool) - Element setter
			disabledElementsLookup.put(node, !bool);
			}
			}
			}

			return bool;
			}
			};

			return $animate;

			function queueAnimation(element, event, initialOptions) {
			// we always make a copy of the options since
			// there should never be any side effects on
			// the input data when running `$animateCss`.
			var options = copy(initialOptions);

			var node, parent;
			element = stripCommentsFromElement(element);
			if (element) {
			node = getDomNode(element);
			parent = element.parent();
			}

			options = prepareAnimationOptions(options);

			// we create a fake runner with a working promise.
			// These methods will become available after the digest has passed
			var runner = new $$AnimateRunner();

			// this is used to trigger callbacks in postDigest mode
			var runInNextPostDigestOrNow = postDigestTaskFactory();

			if (isArray(options.addClass)) {
			options.addClass = options.addClass.join(' ');
			}

			if (options.addClass && !isString(options.addClass)) {
			options.addClass = null;
			}

			if (isArray(options.removeClass)) {
			options.removeClass = options.removeClass.join(' ');
			}

			if (options.removeClass && !isString(options.removeClass)) {
			options.removeClass = null;
			}

			if (options.from && !isObject(options.from)) {
			options.from = null;
			}

			if (options.to && !isObject(options.to)) {
			options.to = null;
			}

			// there are situations where a directive issues an animation for
			// a jqLite wrapper that contains only comment nodes... If this
			// happens then there is no way we can perform an animation
			if (!node) {
			close();
			return runner;
			}

			var className = [node.className, options.addClass, options.removeClass].join(' ');
			if (!isAnimatableClassName(className)) {
			close();
			return runner;
			}

			var isStructural = ['enter', 'move', 'leave'].indexOf(event) >= 0;

			var documentHidden = $document[0].hidden;

			// this is a hard disable of all animations for the application or on
			// the element itself, therefore there is no need to continue further
			// past this point if not enabled
			// Animations are also disabled if the document is currently hidden (page is not visible
			// to the user), because browsers slow down or do not flush calls to requestAnimationFrame
			var skipAnimations = !animationsEnabled \|\| documentHidden \|\| disabledElementsLookup.get(node);
			var existingAnimation = (!skipAnimations && activeAnimationsLookup.get(node)) \|\| {};
			var hasExistingAnimation = !!existingAnimation.state;

			// there is no point in traversing the same collection of parent ancestors if a followup
			// animation will be run on the same element that already did all that checking work
			if (!skipAnimations && (!hasExistingAnimation \|\| existingAnimation.state != PRE_DIGEST_STATE)) {
			skipAnimations = !areAnimationsAllowed(element, parent, event);
			}

			if (skipAnimations) {
			// Callbacks should fire even if the document is hidden (regression fix for issue #14120)
			if (documentHidden) notifyProgress(runner, event, 'start');
			close();
			if (documentHidden) notifyProgress(runner, event, 'close');
			return runner;
			}

			if (isStructural) {
			closeChildAnimations(element);
			}

			var newAnimation = {
			structural: isStructural,
			element: element,
			event: event,
			addClass: options.addClass,
			removeClass: options.removeClass,
			close: close,
			options: options,
			runner: runner
			};

			if (hasExistingAnimation) {
			var skipAnimationFlag = isAllowed('skip', element, newAnimation, existingAnimation);
			if (skipAnimationFlag) {
			if (existingAnimation.state === RUNNING_STATE) {
			close();
			return runner;
			} else {
			mergeAnimationDetails(element, existingAnimation, newAnimation);
			return existingAnimation.runner;
			}
			}
			var cancelAnimationFlag = isAllowed('cancel', element, newAnimation, existingAnimation);
			if (cancelAnimationFlag) {
			if (existingAnimation.state === RUNNING_STATE) {
			// this will end the animation right away and it is safe
			// to do so since the animation is already running and the
			// runner callback code will run in async
			existingAnimation.runner.end();
			} else if (existingAnimation.structural) {
			// this means that the animation is queued into a digest, but
			// hasn't started yet. Therefore it is safe to run the close
			// method which will call the runner methods in async.
			existingAnimation.close();
			} else {
			// this will merge the new animation options into existing animation options
			mergeAnimationDetails(element, existingAnimation, newAnimation);

			return existingAnimation.runner;
			}
			} else {
			// a joined animation means that this animation will take over the existing one
			// so an example would involve a leave animation taking over an enter. Then when
			// the postDigest kicks in the enter will be ignored.
			var joinAnimationFlag = isAllowed('join', element, newAnimation, existingAnimation);
			if (joinAnimationFlag) {
			if (existingAnimation.state === RUNNING_STATE) {
			normalizeAnimationDetails(element, newAnimation);
			} else {
			applyGeneratedPreparationClasses(element, isStructural ? event : null, options);

			event = newAnimation.event = existingAnimation.event;
			options = mergeAnimationDetails(element, existingAnimation, newAnimation);

			//we return the same runner since only the option values of this animation will
			//be fed into the `existingAnimation`.
			return existingAnimation.runner;
			}
			}
			}
			} else {
			// normalization in this case means that it removes redundant CSS classes that
			// already exist (addClass) or do not exist (removeClass) on the element
			normalizeAnimationDetails(element, newAnimation);
			}

			// when the options are merged and cleaned up we may end up not having to do
			// an animation at all, therefore we should check this before issuing a post
			// digest callback. Structural animations will always run no matter what.
			var isValidAnimation = newAnimation.structural;
			if (!isValidAnimation) {
			// animate (from/to) can be quickly checked first, otherwise we check if any classes are present
			isValidAnimation = (newAnimation.event === 'animate' && Object.keys(newAnimation.options.to \|\| {}).length > 0)
			\|\| hasAnimationClasses(newAnimation);
			}

			if (!isValidAnimation) {
			close();
			clearElementAnimationState(element);
			return runner;
			}

			// the counter keeps track of cancelled animations
			var counter = (existingAnimation.counter \|\| 0) + 1;
			newAnimation.counter = counter;

			markElementAnimationState(element, PRE_DIGEST_STATE, newAnimation);

			$rootScope.$$postDigest(function() {
			var animationDetails = activeAnimationsLookup.get(node);
			var animationCancelled = !animationDetails;
			animationDetails = animationDetails \|\| {};

			// if addClass/removeClass is called before something like enter then the
			// registered parent element may not be present. The code below will ensure
			// that a final value for parent element is obtained
			var parentElement = element.parent() \|\| [];

			// animate/structural/class-based animations all have requirements. Otherwise there
			// is no point in performing an animation. The parent node must also be set.
			var isValidAnimation = parentElement.length > 0
			&& (animationDetails.event === 'animate'
			\|\| animationDetails.structural
			\|\| hasAnimationClasses(animationDetails));

			// this means that the previous animation was cancelled
			// even if the follow-up animation is the same event
			if (animationCancelled \|\| animationDetails.counter !== counter \|\| !isValidAnimation) {
			// if another animation did not take over then we need
			// to make sure that the domOperation and options are
			// handled accordingly
			if (animationCancelled) {
			applyAnimationClasses(element, options);
			applyAnimationStyles(element, options);
			}

			// if the event changed from something like enter to leave then we do
			// it, otherwise if it's the same then the end result will be the same too
			if (animationCancelled \|\| (isStructural && animationDetails.event !== event)) {
			options.domOperation();
			runner.end();
			}

			// in the event that the element animation was not cancelled or a follow-up animation
			// isn't allowed to animate from here then we need to clear the state of the element
			// so that any future animations won't read the expired animation data.
			if (!isValidAnimation) {
			clearElementAnimationState(element);
			}

			return;
			}

			// this combined multiple class to addClass / removeClass into a setClass event
			// so long as a structural event did not take over the animation
			event = !animationDetails.structural && hasAnimationClasses(animationDetails, true)
			? 'setClass'
			: animationDetails.event;

			markElementAnimationState(element, RUNNING_STATE);
			var realRunner = $$animation(element, event, animationDetails.options);

			// this will update the runner's flow-control events based on
			// the `realRunner` object.
			runner.setHost(realRunner);
			notifyProgress(runner, event, 'start', {});

			realRunner.done(function(status) {
			close(!status);
			var animationDetails = activeAnimationsLookup.get(node);
			if (animationDetails && animationDetails.counter === counter) {
			clearElementAnimationState(getDomNode(element));
			}
			notifyProgress(runner, event, 'close', {});
			});
			});

			return runner;

			function notifyProgress(runner, event, phase, data) {
			runInNextPostDigestOrNow(function() {
			var callbacks = findCallbacks(parent, element, event);
			if (callbacks.length) {
			// do not optimize this call here to RAF because
			// we don't know how heavy the callback code here will
			// be and if this code is buffered then this can
			// lead to a performance regression.
			$$rAF(function() {
			forEach(callbacks, function(callback) {
			callback(element, phase, data);
			});
			cleanupEventListeners(phase, element);
			});
			} else {
			cleanupEventListeners(phase, element);
			}
			});
			runner.progress(event, phase, data);
			}

			function close(reject) { // jshint ignore:line
			clearGeneratedClasses(element, options);
			applyAnimationClasses(element, options);
			applyAnimationStyles(element, options);
			options.domOperation();
			runner.complete(!reject);
			}
			}

			function closeChildAnimations(element) {
			var node = getDomNode(element);
			var children = node.querySelectorAll('[' + NG_ANIMATE_ATTR_NAME + ']');
			forEach(children, function(child) {
			var state = parseInt(child.getAttribute(NG_ANIMATE_ATTR_NAME));
			var animationDetails = activeAnimationsLookup.get(child);
			if (animationDetails) {
			switch (state) {
			case RUNNING_STATE:
			animationDetails.runner.end();
			/* falls through */
			case PRE_DIGEST_STATE:
			activeAnimationsLookup.remove(child);
			break;
			}
			}
			});
			}

			function clearElementAnimationState(element) {
			var node = getDomNode(element);
			node.removeAttribute(NG_ANIMATE_ATTR_NAME);
			activeAnimationsLookup.remove(node);
			}

			function isMatchingElement(nodeOrElmA, nodeOrElmB) {
			return getDomNode(nodeOrElmA) === getDomNode(nodeOrElmB);
			}

			/**
			* This fn returns false if any of the following is true:
			* a) animations on any parent element are disabled, and animations on the element aren't explicitly allowed
			* b) a parent element has an ongoing structural animation, and animateChildren is false
			* c) the element is not a child of the body
			* d) the element is not a child of the $rootElement
			*/
			function areAnimationsAllowed(element, parentElement, event) {
			var bodyElement = jqLite($document[0].body);
			var bodyElementDetected = isMatchingElement(element, bodyElement) \|\| element[0].nodeName === 'HTML';
			var rootElementDetected = isMatchingElement(element, $rootElement);
			var parentAnimationDetected = false;
			var animateChildren;
			var elementDisabled = disabledElementsLookup.get(getDomNode(element));

			var parentHost = jqLite.data(element[0], NG_ANIMATE_PIN_DATA);
			if (parentHost) {
			parentElement = parentHost;
			}

			parentElement = getDomNode(parentElement);

			while (parentElement) {
			if (!rootElementDetected) {
			// angular doesn't want to attempt to animate elements outside of the application
			// therefore we need to ensure that the rootElement is an ancestor of the current element
			rootElementDetected = isMatchingElement(parentElement, $rootElement);
			}

			if (parentElement.nodeType !== ELEMENT_NODE) {
			// no point in inspecting the #document element
			break;
			}

			var details = activeAnimationsLookup.get(parentElement) \|\| {};
			// either an enter, leave or move animation will commence
			// therefore we can't allow any animations to take place
			// but if a parent animation is class-based then that's ok
			if (!parentAnimationDetected) {
			var parentElementDisabled = disabledElementsLookup.get(parentElement);

			if (parentElementDisabled === true && elementDisabled !== false) {
			// disable animations if the user hasn't explicitly enabled animations on the
			// current element
			elementDisabled = true;
			// element is disabled via parent element, no need to check anything else
			break;
			} else if (parentElementDisabled === false) {
			elementDisabled = false;
			}
			parentAnimationDetected = details.structural;
			}

			if (isUndefined(animateChildren) \|\| animateChildren === true) {
			var value = jqLite.data(parentElement, NG_ANIMATE_CHILDREN_DATA);
			if (isDefined(value)) {
			animateChildren = value;
			}
			}

			// there is no need to continue traversing at this point
			if (parentAnimationDetected && animateChildren === false) break;

			if (!bodyElementDetected) {
			// we also need to ensure that the element is or will be a part of the body element
			// otherwise it is pointless to even issue an animation to be rendered
			bodyElementDetected = isMatchingElement(parentElement, bodyElement);
			}

			if (bodyElementDetected && rootElementDetected) {
			// If both body and root have been found, any other checks are pointless,
			// as no animation data should live outside the application
			break;
			}

			if (!rootElementDetected) {
			// If no rootElement is detected, check if the parentElement is pinned to another element
			parentHost = jqLite.data(parentElement, NG_ANIMATE_PIN_DATA);
			if (parentHost) {
			// The pin target element becomes the next parent element
			parentElement = getDomNode(parentHost);
			continue;
			}
			}

			parentElement = parentElement.parentNode;
			}

			var allowAnimation = (!parentAnimationDetected \|\| animateChildren) && elementDisabled !== true;
			return allowAnimation && rootElementDetected && bodyElementDetected;
			}

			function markElementAnimationState(element, state, details) {
			details = details \|\| {};
			details.state = state;

			var node = getDomNode(element);
			node.setAttribute(NG_ANIMATE_ATTR_NAME, state);

			var oldValue = activeAnimationsLookup.get(node);
			var newValue = oldValue
			? extend(oldValue, details)
			: details;
			activeAnimationsLookup.put(node, newValue);
			}
			}];
			}];

			var $$AnimationProvider = ['$animateProvider', function($animateProvider) {
			var NG_ANIMATE_REF_ATTR = 'ng-animate-ref';

			var drivers = this.drivers = [];

			var RUNNER_STORAGE_KEY = '$$animationRunner';

			function setRunner(element, runner) {
			element.data(RUNNER_STORAGE_KEY, runner);
			}

			function removeRunner(element) {
			element.removeData(RUNNER_STORAGE_KEY);
			}

			function getRunner(element) {
			return element.data(RUNNER_STORAGE_KEY);
			}

			this.$get = ['$$jqLite', '$rootScope', '$injector', '$$AnimateRunner', '$$HashMap', '$$rAFScheduler',
			function($$jqLite, $rootScope, $injector, $$AnimateRunner, $$HashMap, $$rAFScheduler) {

			var animationQueue = [];
			var applyAnimationClasses = applyAnimationClassesFactory($$jqLite);

			function sortAnimations(animations) {
			var tree = { children: [] };
			var i, lookup = new $$HashMap();

			// this is done first beforehand so that the hashmap
			// is filled with a list of the elements that will be animated
			for (i = 0; i < animations.length; i++) {
			var animation = animations[i];
			lookup.put(animation.domNode, animations[i] = {
			domNode: animation.domNode,
			fn: animation.fn,
			children: []
			});
			}

			for (i = 0; i < animations.length; i++) {
			processNode(animations[i]);
			}

			return flatten(tree);

			function processNode(entry) {
			if (entry.processed) return entry;
			entry.processed = true;

			var elementNode = entry.domNode;
			var parentNode = elementNode.parentNode;
			lookup.put(elementNode, entry);

			var parentEntry;
			while (parentNode) {
			parentEntry = lookup.get(parentNode);
			if (parentEntry) {
			if (!parentEntry.processed) {
			parentEntry = processNode(parentEntry);
			}
			break;
			}
			parentNode = parentNode.parentNode;
			}

			(parentEntry \|\| tree).children.push(entry);
			return entry;
			}

			function flatten(tree) {
			var result = [];
			var queue = [];
			var i;

			for (i = 0; i < tree.children.length; i++) {
			queue.push(tree.children[i]);
			}

			var remainingLevelEntries = queue.length;
			var nextLevelEntries = 0;
			var row = [];

			for (i = 0; i < queue.length; i++) {
			var entry = queue[i];
			if (remainingLevelEntries <= 0) {
			remainingLevelEntries = nextLevelEntries;
			nextLevelEntries = 0;
			result.push(row);
			row = [];
			}
			row.push(entry.fn);
			entry.children.forEach(function(childEntry) {
			nextLevelEntries++;
			queue.push(childEntry);
			});
			remainingLevelEntries--;
			}

			if (row.length) {
			result.push(row);
			}

			return result;
			}
			}

			// TODO(matsko): document the signature in a better way
			return function(element, event, options) {
			options = prepareAnimationOptions(options);
			var isStructural = ['enter', 'move', 'leave'].indexOf(event) >= 0;

			// there is no animation at the current moment, however
			// these runner methods will get later updated with the
			// methods leading into the driver's end/cancel methods
			// for now they just stop the animation from starting
			var runner = new $$AnimateRunner({
			end: function() { close(); },
			cancel: function() { close(true); }
			});

			if (!drivers.length) {
			close();
			return runner;
			}

			setRunner(element, runner);

			var classes = mergeClasses(element.attr('class'), mergeClasses(options.addClass, options.removeClass));
			var tempClasses = options.tempClasses;
			if (tempClasses) {
			classes += ' ' + tempClasses;
			options.tempClasses = null;
			}

			var prepareClassName;
			if (isStructural) {
			prepareClassName = 'ng-' + event + PREPARE_CLASS_SUFFIX;
			$$jqLite.addClass(element, prepareClassName);
			}

			animationQueue.push({
			// this data is used by the postDigest code and passed into
			// the driver step function
			element: element,
			classes: classes,
			event: event,
			structural: isStructural,
			options: options,
			beforeStart: beforeStart,
			close: close
			});

			element.on('$destroy', handleDestroyedElement);

			// we only want there to be one function called within the post digest
			// block. This way we can group animations for all the animations that
			// were apart of the same postDigest flush call.
			if (animationQueue.length > 1) return runner;

			$rootScope.$$postDigest(function() {
			var animations = [];
			forEach(animationQueue, function(entry) {
			// the element was destroyed early on which removed the runner
			// form its storage. This means we can't animate this element
			// at all and it already has been closed due to destruction.
			if (getRunner(entry.element)) {
			animations.push(entry);
			} else {
			entry.close();
			}
			});

			// now any future animations will be in another postDigest
			animationQueue.length = 0;

			var groupedAnimations = groupAnimations(animations);
			var toBeSortedAnimations = [];

			forEach(groupedAnimations, function(animationEntry) {
			toBeSortedAnimations.push({
			domNode: getDomNode(animationEntry.from ? animationEntry.from.element : animationEntry.element),
			fn: function triggerAnimationStart() {
			// it's important that we apply the `ng-animate` CSS class and the
			// temporary classes before we do any driver invoking since these
			// CSS classes may be required for proper CSS detection.
			animationEntry.beforeStart();

			var startAnimationFn, closeFn = animationEntry.close;

			// in the event that the element was removed before the digest runs or
			// during the RAF sequencing then we should not trigger the animation.
			var targetElement = animationEntry.anchors
			? (animationEntry.from.element \|\| animationEntry.to.element)
			: animationEntry.element;

			if (getRunner(targetElement)) {
			var operation = invokeFirstDriver(animationEntry);
			if (operation) {
			startAnimationFn = operation.start;
			}
			}

			if (!startAnimationFn) {
			closeFn();
			} else {
			var animationRunner = startAnimationFn();
			animationRunner.done(function(status) {
			closeFn(!status);
			});
			updateAnimationRunners(animationEntry, animationRunner);
			}
			}
			});
			});

			// we need to sort each of the animations in order of parent to child
			// relationships. This ensures that the child classes are applied at the
			// right time.
			$$rAFScheduler(sortAnimations(toBeSortedAnimations));
			});

			return runner;

			// TODO(matsko): change to reference nodes
			function getAnchorNodes(node) {
			var SELECTOR = '[' + NG_ANIMATE_REF_ATTR + ']';
			var items = node.hasAttribute(NG_ANIMATE_REF_ATTR)
			? [node]
			: node.querySelectorAll(SELECTOR);
			var anchors = [];
			forEach(items, function(node) {
			var attr = node.getAttribute(NG_ANIMATE_REF_ATTR);
			if (attr && attr.length) {
			anchors.push(node);
			}
			});
			return anchors;
			}

			function groupAnimations(animations) {
			var preparedAnimations = [];
			var refLookup = {};
			forEach(animations, function(animation, index) {
			var element = animation.element;
			var node = getDomNode(element);
			var event = animation.event;
			var enterOrMove = ['enter', 'move'].indexOf(event) >= 0;
			var anchorNodes = animation.structural ? getAnchorNodes(node) : [];

			if (anchorNodes.length) {
			var direction = enterOrMove ? 'to' : 'from';

			forEach(anchorNodes, function(anchor) {
			var key = anchor.getAttribute(NG_ANIMATE_REF_ATTR);
			refLookup[key] = refLookup[key] \|\| {};
			refLookup[key][direction] = {
			animationID: index,
			element: jqLite(anchor)
			};
			});
			} else {
			preparedAnimations.push(animation);
			}
			});

			var usedIndicesLookup = {};
			var anchorGroups = {};
			forEach(refLookup, function(operations, key) {
			var from = operations.from;
			var to = operations.to;

			if (!from \|\| !to) {
			// only one of these is set therefore we can't have an
			// anchor animation since all three pieces are required
			var index = from ? from.animationID : to.animationID;
			var indexKey = index.toString();
			if (!usedIndicesLookup[indexKey]) {
			usedIndicesLookup[indexKey] = true;
			preparedAnimations.push(animations[index]);
			}
			return;
			}

			var fromAnimation = animations[from.animationID];
			var toAnimation = animations[to.animationID];
			var lookupKey = from.animationID.toString();
			if (!anchorGroups[lookupKey]) {
			var group = anchorGroups[lookupKey] = {
			structural: true,
			beforeStart: function() {
			fromAnimation.beforeStart();
			toAnimation.beforeStart();
			},
			close: function() {
			fromAnimation.close();
			toAnimation.close();
			},
			classes: cssClassesIntersection(fromAnimation.classes, toAnimation.classes),
			from: fromAnimation,
			to: toAnimation,
			anchors: [] // TODO(matsko): change to reference nodes
			};

			// the anchor animations require that the from and to elements both have at least
			// one shared CSS class which effectively marries the two elements together to use
			// the same animation driver and to properly sequence the anchor animation.
			if (group.classes.length) {
			preparedAnimations.push(group);
			} else {
			preparedAnimations.push(fromAnimation);
			preparedAnimations.push(toAnimation);
			}
			}

			anchorGroups[lookupKey].anchors.push({
			'out': from.element, 'in': to.element
			});
			});

			return preparedAnimations;
			}

			function cssClassesIntersection(a,b) {
			a = a.split(' ');
			b = b.split(' ');
			var matches = [];

			for (var i = 0; i < a.length; i++) {
			var aa = a[i];
			if (aa.substring(0,3) === 'ng-') continue;

			for (var j = 0; j < b.length; j++) {
			if (aa === b[j]) {
			matches.push(aa);
			break;
			}
			}
			}

			return matches.join(' ');
			}

			function invokeFirstDriver(animationDetails) {
			// we loop in reverse order since the more general drivers (like CSS and JS)
			// may attempt more elements, but custom drivers are more particular
			for (var i = drivers.length - 1; i >= 0; i--) {
			var driverName = drivers[i];
			var factory = $injector.get(driverName);
			var driver = factory(animationDetails);
			if (driver) {
			return driver;
			}
			}
			}

			function beforeStart() {
			element.addClass(NG_ANIMATE_CLASSNAME);
			if (tempClasses) {
			$$jqLite.addClass(element, tempClasses);
			}
			if (prepareClassName) {
			$$jqLite.removeClass(element, prepareClassName);
			prepareClassName = null;
			}
			}

			function updateAnimationRunners(animation, newRunner) {
			if (animation.from && animation.to) {
			update(animation.from.element);
			update(animation.to.element);
			} else {
			update(animation.element);
			}

			function update(element) {
			var runner = getRunner(element);
			if (runner) runner.setHost(newRunner);
			}
			}

			function handleDestroyedElement() {
			var runner = getRunner(element);
			if (runner && (event !== 'leave' \|\| !options.$$domOperationFired)) {
			runner.end();
			}
			}

			function close(rejected) { // jshint ignore:line
			element.off('$destroy', handleDestroyedElement);
			removeRunner(element);

			applyAnimationClasses(element, options);
			applyAnimationStyles(element, options);
			options.domOperation();

			if (tempClasses) {
			$$jqLite.removeClass(element, tempClasses);
			}

			element.removeClass(NG_ANIMATE_CLASSNAME);
			runner.complete(!rejected);
			}
			};
			}];
			}];

			/**
			* @ngdoc directive
			* @name ngAnimateSwap
			* @restrict A
			* @scope
			*
			* @description
			*
			* ngAnimateSwap is a animation-oriented directive that allows for the container to
			* be removed and entered in whenever the associated expression changes. A
			* common usecase for this directive is a rotating banner or slider component which
			* contains one image being present at a time. When the active image changes
			* then the old image will perform a `leave` animation and the new element
			* will be inserted via an `enter` animation.
			*
			* @animations
			* \| Animation \| Occurs \|
			* \|----------------------------------\|--------------------------------------\|
			* \| {@link ng.$animate#enter enter} \| when the new element is inserted to the DOM \|
			* \| {@link ng.$animate#leave leave} \| when the old element is removed from the DOM \|
			*
			* @example
			* <example name="ngAnimateSwap-directive" module="ngAnimateSwapExample"
			* deps="angular-animate.js"
			* animations="true" fixBase="true">
			* <file name="index.html">
			* <div class="container" ng-controller="AppCtrl">
			* <div ng-animate-swap="number" class="cell swap-animation" ng-class="colorClass(number)">
			* {{ number }}
			* </div>
			* </div>
			* </file>
			* <file name="script.js">
			* angular.module('ngAnimateSwapExample', ['ngAnimate'])
			* .controller('AppCtrl', ['$scope', '$interval', function($scope, $interval) {
			* $scope.number = 0;
			* $interval(function() {
			* $scope.number++;
			* }, 1000);
			*
			* var colors = ['red','blue','green','yellow','orange'];
			* $scope.colorClass = function(number) {
			* return colors[number % colors.length];
			* };
			* }]);
			* </file>
			* <file name="animations.css">
			* .container {
			* height:250px;
			* width:250px;
			* position:relative;
			* overflow:hidden;
			* border:2px solid black;
			* }
			* .container .cell {
			* font-size:150px;
			* text-align:center;
			* line-height:250px;
			* position:absolute;
			* top:0;
			* left:0;
			* right:0;
			* border-bottom:2px solid black;
			* }
			* .swap-animation.ng-enter, .swap-animation.ng-leave {
			* transition:0.5s linear all;
			* }
			* .swap-animation.ng-enter {
			* top:-250px;
			* }
			* .swap-animation.ng-enter-active {
			* top:0px;
			* }
			* .swap-animation.ng-leave {
			* top:0px;
			* }
			* .swap-animation.ng-leave-active {
			* top:250px;
			* }
			* .red { background:red; }
			* .green { background:green; }
			* .blue { background:blue; }
			* .yellow { background:yellow; }
			* .orange { background:orange; }
			* </file>
			* </example>
			*/
			var ngAnimateSwapDirective = ['$animate', '$rootScope', function($animate, $rootScope) {
			return {
			restrict: 'A',
			transclude: 'element',
			terminal: true,
			priority: 600, // we use 600 here to ensure that the directive is caught before others
			link: function(scope, $element, attrs, ctrl, $transclude) {
			var previousElement, previousScope;
			scope.$watchCollection(attrs.ngAnimateSwap \|\| attrs['for'], function(value) {
			if (previousElement) {
			$animate.leave(previousElement);
			}
			if (previousScope) {
			previousScope.$destroy();
			previousScope = null;
			}
			if (value \|\| value === 0) {
			previousScope = scope.$new();
			$transclude(previousScope, function(element) {
			previousElement = element;
			$animate.enter(element, null, $element);
			});
			}
			});
			}
			};
			}];

			/**
			* @ngdoc module
			* @name ngAnimate
			* @description
			*
			* The `ngAnimate` module provides support for CSS-based animations (keyframes and transitions) as well as JavaScript-based animations via
			* callback hooks. Animations are not enabled by default, however, by including `ngAnimate` the animation hooks are enabled for an Angular app.
			*
			* <div doc-module-components="ngAnimate"></div>
			*
			* # Usage
			* Simply put, there are two ways to make use of animations when ngAnimate is used: by using CSS and JavaScript. The former works purely based
			* using CSS (by using matching CSS selectors/styles) and the latter triggers animations that are registered via `module.animation()`. For
			* both CSS and JS animations the sole requirement is to have a matching `CSS class` that exists both in the registered animation and within
			* the HTML element that the animation will be triggered on.
			*
			* ## Directive Support
			* The following directives are "animation aware":
			*
			* \| Directive \| Supported Animations \|
			* \|----------------------------------------------------------------------------------------------------------\|--------------------------------------------------------------------------\|
			* \| {@link ng.directive:ngRepeat#animations ngRepeat} \| enter, leave and move \|
			* \| {@link ngRoute.directive:ngView#animations ngView} \| enter and leave \|
			* \| {@link ng.directive:ngInclude#animations ngInclude} \| enter and leave \|
			* \| {@link ng.directive:ngSwitch#animations ngSwitch} \| enter and leave \|
			* \| {@link ng.directive:ngIf#animations ngIf} \| enter and leave \|
			* \| {@link ng.directive:ngClass#animations ngClass} \| add and remove (the CSS class(es) present) \|
			* \| {@link ng.directive:ngShow#animations ngShow} & {@link ng.directive:ngHide#animations ngHide} \| add and remove (the ng-hide class value) \|
			* \| {@link ng.directive:form#animation-hooks form} & {@link ng.directive:ngModel#animation-hooks ngModel} \| add and remove (dirty, pristine, valid, invalid & all other validations) \|
			* \| {@link module:ngMessages#animations ngMessages} \| add and remove (ng-active & ng-inactive) \|
			* \| {@link module:ngMessages#animations ngMessage} \| enter and leave \|
			*
			* (More information can be found by visiting each the documentation associated with each directive.)
			*
			* ## CSS-based Animations
			*
			* CSS-based animations with ngAnimate are unique since they require no JavaScript code at all. By using a CSS class that we reference between our HTML
			* and CSS code we can create an animation that will be picked up by Angular when an the underlying directive performs an operation.
			*
			* The example below shows how an `enter` animation can be made possible on an element using `ng-if`:
			*
			* ```html
			* <div ng-if="bool" class="fade">
			* Fade me in out
			* </div>
			* <button ng-click="bool=true">Fade In!</button>
			* <button ng-click="bool=false">Fade Out!</button>
			* ```
			*
			* Notice the CSS class fade? We can now create the CSS transition code that references this class:
			*
			* ```css
			* /* The starting CSS styles for the enter animation */
			* .fade.ng-enter {
			* transition:0.5s linear all;
			* opacity:0;
			* }
			*
			* /* The finishing CSS styles for the enter animation */
			* .fade.ng-enter.ng-enter-active {
			* opacity:1;
			* }
			* ```
			*
			* The key thing to remember here is that, depending on the animation event (which each of the directives above trigger depending on what's going on) two
			* generated CSS classes will be applied to the element; in the example above we have `.ng-enter` and `.ng-enter-active`. For CSS transitions, the transition
			* code must be defined within the starting CSS class (in this case `.ng-enter`). The destination class is what the transition will animate towards.
			*
			* If for example we wanted to create animations for `leave` and `move` (ngRepeat triggers move) then we can do so using the same CSS naming conventions:
			*
			* ```css
			* /* now the element will fade out before it is removed from the DOM */
			* .fade.ng-leave {
			* transition:0.5s linear all;
			* opacity:1;
			* }
			* .fade.ng-leave.ng-leave-active {
			* opacity:0;
			* }
			* ```
			*
			* We can also make use of CSS Keyframes by referencing the keyframe animation within the starting CSS class:
			*
			* ```css
			* /* there is no need to define anything inside of the destination
			* CSS class since the keyframe will take charge of the animation */
			* .fade.ng-leave {
			* animation: my_fade_animation 0.5s linear;
			* -webkit-animation: my_fade_animation 0.5s linear;
			* }
			*
			* @keyframes my_fade_animation {
			* from { opacity:1; }
			* to { opacity:0; }
			* }
			*
			* @-webkit-keyframes my_fade_animation {
			* from { opacity:1; }
			* to { opacity:0; }
			* }
			* ```
			*
			* Feel free also mix transitions and keyframes together as well as any other CSS classes on the same element.
			*
			* ### CSS Class-based Animations
			*
			* Class-based animations (animations that are triggered via `ngClass`, `ngShow`, `ngHide` and some other directives) have a slightly different
			* naming convention. Class-based animations are basic enough that a standard transition or keyframe can be referenced on the class being added
			* and removed.
			*
			* For example if we wanted to do a CSS animation for `ngHide` then we place an animation on the `.ng-hide` CSS class:
			*
			* ```html
			* <div ng-show="bool" class="fade">
			* Show and hide me
			* </div>
			* <button ng-click="bool=!bool">Toggle</button>
			*
			* <style>
			* .fade.ng-hide {
			* transition:0.5s linear all;
			* opacity:0;
			* }
			* </style>
			* ```
			*
			* All that is going on here with ngShow/ngHide behind the scenes is the `.ng-hide` class is added/removed (when the hidden state is valid). Since
			* ngShow and ngHide are animation aware then we can match up a transition and ngAnimate handles the rest.
			*
			* In addition the addition and removal of the CSS class, ngAnimate also provides two helper methods that we can use to further decorate the animation
			* with CSS styles.
			*
			* ```html
			* <div ng-class="{on:onOff}" class="highlight">
			* Highlight this box
			* </div>
			* <button ng-click="onOff=!onOff">Toggle</button>
			*
			* <style>
			* .highlight {
			* transition:0.5s linear all;
			* }
			* .highlight.on-add {
			* background:white;
			* }
			* .highlight.on {
			* background:yellow;
			* }
			* .highlight.on-remove {
			* background:black;
			* }
			* </style>
			* ```
			*
			* We can also make use of CSS keyframes by placing them within the CSS classes.
			*
			*
			* ### CSS Staggering Animations
			* A Staggering animation is a collection of animations that are issued with a slight delay in between each successive operation resulting in a
			* curtain-like effect. The ngAnimate module (versions >=1.2) supports staggering animations and the stagger effect can be
			* performed by creating a ng-EVENT-stagger CSS class and attaching that class to the base CSS class used for
			* the animation. The style property expected within the stagger class can either be a transition-delay or an
			* animation-delay property (or both if your animation contains both transitions and keyframe animations).
			*
			* ```css
			* .my-animation.ng-enter {
			* /* standard transition code */
			* transition: 1s linear all;
			* opacity:0;
			* }
			* .my-animation.ng-enter-stagger {
			* /* this will have a 100ms delay between each successive leave animation */
			* transition-delay: 0.1s;
			*
			* /* As of 1.4.4, this must always be set: it signals ngAnimate
			* to not accidentally inherit a delay property from another CSS class */
			* transition-duration: 0s;
			* }
			* .my-animation.ng-enter.ng-enter-active {
			* /* standard transition styles */
			* opacity:1;
			* }
			* ```
			*
			* Staggering animations work by default in ngRepeat (so long as the CSS class is defined). Outside of ngRepeat, to use staggering animations
			* on your own, they can be triggered by firing multiple calls to the same event on $animate. However, the restrictions surrounding this
			* are that each of the elements must have the same CSS className value as well as the same parent element. A stagger operation
			* will also be reset if one or more animation frames have passed since the multiple calls to `$animate` were fired.
			*
			* The following code will issue the ng-leave-stagger event on the element provided:
			*
			* ```js
			* var kids = parent.children();
			*
			* $animate.leave(kids[0]); //stagger index=0
			* $animate.leave(kids[1]); //stagger index=1
			* $animate.leave(kids[2]); //stagger index=2
			* $animate.leave(kids[3]); //stagger index=3
			* $animate.leave(kids[4]); //stagger index=4
			*
			* window.requestAnimationFrame(function() {
			* //stagger has reset itself
			* $animate.leave(kids[5]); //stagger index=0
			* $animate.leave(kids[6]); //stagger index=1
			*
			* $scope.$digest();
			* });
			* ```
			*
			* Stagger animations are currently only supported within CSS-defined animations.
			*
			* ### The `ng-animate` CSS class
			*
			* When ngAnimate is animating an element it will apply the `ng-animate` CSS class to the element for the duration of the animation.
			* This is a temporary CSS class and it will be removed once the animation is over (for both JavaScript and CSS-based animations).
			*
			* Therefore, animations can be applied to an element using this temporary class directly via CSS.
			*
			* ```css
			* .zipper.ng-animate {
			* transition:0.5s linear all;
			* }
			* .zipper.ng-enter {
			* opacity:0;
			* }
			* .zipper.ng-enter.ng-enter-active {
			* opacity:1;
			* }
			* .zipper.ng-leave {
			* opacity:1;
			* }
			* .zipper.ng-leave.ng-leave-active {
			* opacity:0;
			* }
			* ```
			*
			* (Note that the `ng-animate` CSS class is reserved and it cannot be applied on an element directly since ngAnimate will always remove
			* the CSS class once an animation has completed.)
			*
			*
			* ### The `ng-[event]-prepare` class
			*
			* This is a special class that can be used to prevent unwanted flickering / flash of content before
			* the actual animation starts. The class is added as soon as an animation is initialized, but removed
			* before the actual animation starts (after waiting for a $digest).
			* It is also only added for structural animations (`enter`, `move`, and `leave`).
			*
			* In practice, flickering can appear when nesting elements with structural animations such as `ngIf`
			* into elements that have class-based animations such as `ngClass`.
			*
			* ```html
			* <div ng-class="{red: myProp}">
			* <div ng-class="{blue: myProp}">
			* <div class="message" ng-if="myProp"></div>
			* </div>
			* </div>
			* ```
			*
			* It is possible that during the `enter` animation, the `.message` div will be briefly visible before it starts animating.
			* In that case, you can add styles to the CSS that make sure the element stays hidden before the animation starts:
			*
			* ```css
			* .message.ng-enter-prepare {
			* opacity: 0;
			* }
			*
			* ```
			*
			* ## JavaScript-based Animations
			*
			* ngAnimate also allows for animations to be consumed by JavaScript code. The approach is similar to CSS-based animations (where there is a shared
			* CSS class that is referenced in our HTML code) but in addition we need to register the JavaScript animation on the module. By making use of the
			* `module.animation()` module function we can register the animation.
			*
			* Let's see an example of a enter/leave animation using `ngRepeat`:
			*
			* ```html
			* <div ng-repeat="item in items" class="slide">
			* {{ item }}
			* </div>
			* ```
			*
			* See the slide CSS class? Let's use that class to define an animation that we'll structure in our module code by using `module.animation`:
			*
			* ```js
			* myModule.animation('.slide', [function() {
			* return {
			* // make note that other events (like addClass/removeClass)
			* // have different function input parameters
			* enter: function(element, doneFn) {
			* jQuery(element).fadeIn(1000, doneFn);
			*
			* // remember to call doneFn so that angular
			* // knows that the animation has concluded
			* },
			*
			* move: function(element, doneFn) {
			* jQuery(element).fadeIn(1000, doneFn);
			* },
			*
			* leave: function(element, doneFn) {
			* jQuery(element).fadeOut(1000, doneFn);
			* }
			* }
			* }]);
			* ```
			*
			* The nice thing about JS-based animations is that we can inject other services and make use of advanced animation libraries such as
			* greensock.js and velocity.js.
			*
			* If our animation code class-based (meaning that something like `ngClass`, `ngHide` and `ngShow` triggers it) then we can still define
			* our animations inside of the same registered animation, however, the function input arguments are a bit different:
			*
			* ```html
			* <div ng-class="color" class="colorful">
			* this box is moody
			* </div>
			* <button ng-click="color='red'">Change to red</button>
			* <button ng-click="color='blue'">Change to blue</button>
			* <button ng-click="color='green'">Change to green</button>
			* ```
			*
			* ```js
			* myModule.animation('.colorful', [function() {
			* return {
			* addClass: function(element, className, doneFn) {
			* // do some cool animation and call the doneFn
			* },
			* removeClass: function(element, className, doneFn) {
			* // do some cool animation and call the doneFn
			* },
			* setClass: function(element, addedClass, removedClass, doneFn) {
			* // do some cool animation and call the doneFn
			* }
			* }
			* }]);
			* ```
			*
			* ## CSS + JS Animations Together
			*
			* AngularJS 1.4 and higher has taken steps to make the amalgamation of CSS and JS animations more flexible. However, unlike earlier versions of Angular,
			* defining CSS and JS animations to work off of the same CSS class will not work anymore. Therefore the example below will only result in **JS animations taking
			* charge of the animation**:
			*
			* ```html
			* <div ng-if="bool" class="slide">
			* Slide in and out
			* </div>
			* ```
			*
			* ```js
			* myModule.animation('.slide', [function() {
			* return {
			* enter: function(element, doneFn) {
			* jQuery(element).slideIn(1000, doneFn);
			* }
			* }
			* }]);
			* ```
			*
			* ```css
			* .slide.ng-enter {
			* transition:0.5s linear all;
			* transform:translateY(-100px);
			* }
			* .slide.ng-enter.ng-enter-active {
			* transform:translateY(0);
			* }
			* ```
			*
			* Does this mean that CSS and JS animations cannot be used together? Do JS-based animations always have higher priority? We can make up for the
			* lack of CSS animations by using the `$animateCss` service to trigger our own tweaked-out, CSS-based animations directly from
			* our own JS-based animation code:
			*
			* ```js
			* myModule.animation('.slide', ['$animateCss', function($animateCss) {
			* return {
			* enter: function(element) {
			* // this will trigger `.slide.ng-enter` and `.slide.ng-enter-active`.
			* return $animateCss(element, {
			* event: 'enter',
			* structural: true
			* });
			* }
			* }
			* }]);
			* ```
			*
			* The nice thing here is that we can save bandwidth by sticking to our CSS-based animation code and we don't need to rely on a 3rd-party animation framework.
			*
			* The `$animateCss` service is very powerful since we can feed in all kinds of extra properties that will be evaluated and fed into a CSS transition or
			* keyframe animation. For example if we wanted to animate the height of an element while adding and removing classes then we can do so by providing that
			* data into `$animateCss` directly:
			*
			* ```js
			* myModule.animation('.slide', ['$animateCss', function($animateCss) {
			* return {
			* enter: function(element) {
			* return $animateCss(element, {
			* event: 'enter',
			* structural: true,
			* addClass: 'maroon-setting',
			* from: { height:0 },
			* to: { height: 200 }
			* });
			* }
			* }
			* }]);
			* ```
			*
			* Now we can fill in the rest via our transition CSS code:
			*
			* ```css
			* /* the transition tells ngAnimate to make the animation happen */
			* .slide.ng-enter { transition:0.5s linear all; }
			*
			* /* this extra CSS class will be absorbed into the transition
			* since the $animateCss code is adding the class */
			* .maroon-setting { background:red; }
			* ```
			*
			* And `$animateCss` will figure out the rest. Just make sure to have the `done()` callback fire the `doneFn` function to signal when the animation is over.
			*
			* To learn more about what's possible be sure to visit the {@link ngAnimate.$animateCss $animateCss service}.
			*
			* ## Animation Anchoring (via `ng-animate-ref`)
			*
			* ngAnimate in AngularJS 1.4 comes packed with the ability to cross-animate elements between
			* structural areas of an application (like views) by pairing up elements using an attribute
			* called `ng-animate-ref`.
			*
			* Let's say for example we have two views that are managed by `ng-view` and we want to show
			* that there is a relationship between two components situated in within these views. By using the
			* `ng-animate-ref` attribute we can identify that the two components are paired together and we
			* can then attach an animation, which is triggered when the view changes.
			*
			* Say for example we have the following template code:
			*
			* ```html
			* <!-- index.html -->
			* <div ng-view class="view-animation">
			* </div>
			*
			* <!-- home.html -->
			* <a href="#/banner-page">
			* <img src="./banner.jpg" class="banner" ng-animate-ref="banner">
			* </a>
			*
			* <!-- banner-page.html -->
			* <img src="./banner.jpg" class="banner" ng-animate-ref="banner">
			* ```
			*
			* Now, when the view changes (once the link is clicked), ngAnimate will examine the
			* HTML contents to see if there is a match reference between any components in the view
			* that is leaving and the view that is entering. It will scan both the view which is being
			* removed (leave) and inserted (enter) to see if there are any paired DOM elements that
			* contain a matching ref value.
			*
			* The two images match since they share the same ref value. ngAnimate will now create a
			* transport element (which is a clone of the first image element) and it will then attempt
			* to animate to the position of the second image element in the next view. For the animation to
			* work a special CSS class called `ng-anchor` will be added to the transported element.
			*
			* We can now attach a transition onto the `.banner.ng-anchor` CSS class and then
			* ngAnimate will handle the entire transition for us as well as the addition and removal of
			* any changes of CSS classes between the elements:
			*
			* ```css
			* .banner.ng-anchor {
			* /* this animation will last for 1 second since there are
			* two phases to the animation (an `in` and an `out` phase) */
			* transition:0.5s linear all;
			* }
			* ```
			*
			* We also must include animations for the views that are being entered and removed
			* (otherwise anchoring wouldn't be possible since the new view would be inserted right away).
			*
			* ```css
			* .view-animation.ng-enter, .view-animation.ng-leave {
			* transition:0.5s linear all;
			* position:fixed;
			* left:0;
			* top:0;
			* width:100%;
			* }
			* .view-animation.ng-enter {
			* transform:translateX(100%);
			* }
			* .view-animation.ng-leave,
			* .view-animation.ng-enter.ng-enter-active {
			* transform:translateX(0%);
			* }
			* .view-animation.ng-leave.ng-leave-active {
			* transform:translateX(-100%);
			* }
			* ```
			*
			* Now we can jump back to the anchor animation. When the animation happens, there are two stages that occur:
			* an `out` and an `in` stage. The `out` stage happens first and that is when the element is animated away
			* from its origin. Once that animation is over then the `in` stage occurs which animates the
			* element to its destination. The reason why there are two animations is to give enough time
			* for the enter animation on the new element to be ready.
			*
			* The example above sets up a transition for both the in and out phases, but we can also target the out or
			* in phases directly via `ng-anchor-out` and `ng-anchor-in`.
			*
			* ```css
			* .banner.ng-anchor-out {
			* transition: 0.5s linear all;
			*
			* /* the scale will be applied during the out animation,
			* but will be animated away when the in animation runs */
			* transform: scale(1.2);
			* }
			*
			* .banner.ng-anchor-in {
			* transition: 1s linear all;
			* }
			* ```
			*
			*
			*
			*
			* ### Anchoring Demo
			*
			<example module="anchoringExample"
			name="anchoringExample"
			id="anchoringExample"
			deps="angular-animate.js;angular-route.js"
			animations="true">
			<file name="index.html">
			<a href="#/">Home</a>
			<hr />
			<div class="view-container">
			<div ng-view class="view"></div>
			</div>
			</file>
			<file name="script.js">
			angular.module('anchoringExample', ['ngAnimate', 'ngRoute'])
			.config(['$routeProvider', function($routeProvider) {
			$routeProvider.when('/', {
			templateUrl: 'home.html',
			controller: 'HomeController as home'
			});
			$routeProvider.when('/profile/:id', {
			templateUrl: 'profile.html',
			controller: 'ProfileController as profile'
			});
			}])
			.run(['$rootScope', function($rootScope) {
			$rootScope.records = [
			{ id:1, title: "Miss Beulah Roob" },
			{ id:2, title: "Trent Morissette" },
			{ id:3, title: "Miss Ava Pouros" },
			{ id:4, title: "Rod Pouros" },
			{ id:5, title: "Abdul Rice" },
			{ id:6, title: "Laurie Rutherford Sr." },
			{ id:7, title: "Nakia McLaughlin" },
			{ id:8, title: "Jordon Blanda DVM" },
			{ id:9, title: "Rhoda Hand" },
			{ id:10, title: "Alexandrea Sauer" }
			];
			}])
			.controller('HomeController', [function() {
			//empty
			}])
			.controller('ProfileController', ['$rootScope', '$routeParams', function($rootScope, $routeParams) {
			var index = parseInt($routeParams.id, 10);
			var record = $rootScope.records[index - 1];

			this.title = record.title;
			this.id = record.id;
			}]);
			</file>
			<file name="home.html">
			<h2>Welcome to the home page</h1>
			<p>Please click on an element</p>
			<a class="record"
			ng-href="#/profile/{{ record.id }}"
			ng-animate-ref="{{ record.id }}"
			ng-repeat="record in records">
			{{ record.title }}
			</a>
			</file>
			<file name="profile.html">
			<div class="profile record" ng-animate-ref="{{ profile.id }}">
			{{ profile.title }}
			</div>
			</file>
			<file name="animations.css">
			.record {
			display:block;
			font-size:20px;
			}
			.profile {
			background:black;
			color:white;
			font-size:100px;
			}
			.view-container {
			position:relative;
			}
			.view-container > .view.ng-animate {
			position:absolute;
			top:0;
			left:0;
			width:100%;
			min-height:500px;
			}
			.view.ng-enter, .view.ng-leave,
			.record.ng-anchor {
			transition:0.5s linear all;
			}
			.view.ng-enter {
			transform:translateX(100%);
			}
			.view.ng-enter.ng-enter-active, .view.ng-leave {
			transform:translateX(0%);
			}
			.view.ng-leave.ng-leave-active {
			transform:translateX(-100%);
			}
			.record.ng-anchor-out {
			background:red;
			}
			</file>
			</example>
			*
			* ### How is the element transported?
			*
			* When an anchor animation occurs, ngAnimate will clone the starting element and position it exactly where the starting
			* element is located on screen via absolute positioning. The cloned element will be placed inside of the root element
			* of the application (where ng-app was defined) and all of the CSS classes of the starting element will be applied. The
			* element will then animate into the `out` and `in` animations and will eventually reach the coordinates and match
			* the dimensions of the destination element. During the entire animation a CSS class of `.ng-animate-shim` will be applied
			* to both the starting and destination elements in order to hide them from being visible (the CSS styling for the class
			* is: `visibility:hidden`). Once the anchor reaches its destination then it will be removed and the destination element
			* will become visible since the shim class will be removed.
			*
			* ### How is the morphing handled?
			*
			* CSS Anchoring relies on transitions and keyframes and the internal code is intelligent enough to figure out
			* what CSS classes differ between the starting element and the destination element. These different CSS classes
			* will be added/removed on the anchor element and a transition will be applied (the transition that is provided
			* in the anchor class). Long story short, ngAnimate will figure out what classes to add and remove which will
			* make the transition of the element as smooth and automatic as possible. Be sure to use simple CSS classes that
			* do not rely on DOM nesting structure so that the anchor element appears the same as the starting element (since
			* the cloned element is placed inside of root element which is likely close to the body element).
			*
			* Note that if the root element is on the `<html>` element then the cloned node will be placed inside of body.
			*
			*
			* ## Using $animate in your directive code
			*
			* So far we've explored how to feed in animations into an Angular application, but how do we trigger animations within our own directives in our application?
			* By injecting the `$animate` service into our directive code, we can trigger structural and class-based hooks which can then be consumed by animations. Let's
			* imagine we have a greeting box that shows and hides itself when the data changes
			*
			* ```html
			* <greeting-box active="onOrOff">Hi there</greeting-box>
			* ```
			*
			* ```js
			* ngModule.directive('greetingBox', ['$animate', function($animate) {
			* return function(scope, element, attrs) {
			* attrs.$observe('active', function(value) {
			* value ? $animate.addClass(element, 'on') : $animate.removeClass(element, 'on');
			* });
			* });
			* }]);
			* ```
			*
			* Now the `on` CSS class is added and removed on the greeting box component. Now if we add a CSS class on top of the greeting box element
			* in our HTML code then we can trigger a CSS or JS animation to happen.
			*
			* ```css
			* /* normally we would create a CSS class to reference on the element */
			* greeting-box.on { transition:0.5s linear all; background:green; color:white; }
			* ```
			*
			* The `$animate` service contains a variety of other methods like `enter`, `leave`, `animate` and `setClass`. To learn more about what's
			* possible be sure to visit the {@link ng.$animate $animate service API page}.
			*
			*
			* ## Callbacks and Promises
			*
			* When `$animate` is called it returns a promise that can be used to capture when the animation has ended. Therefore if we were to trigger
			* an animation (within our directive code) then we can continue performing directive and scope related activities after the animation has
			* ended by chaining onto the returned promise that animation method returns.
			*
			* ```js
			* // somewhere within the depths of the directive
			* $animate.enter(element, parent).then(function() {
			* //the animation has completed
			* });
			* ```
			*
			* (Note that earlier versions of Angular prior to v1.4 required the promise code to be wrapped using `$scope.$apply(...)`. This is not the case
			* anymore.)
			*
			* In addition to the animation promise, we can also make use of animation-related callbacks within our directives and controller code by registering
			* an event listener using the `$animate` service. Let's say for example that an animation was triggered on our view
			* routing controller to hook into that:
			*
			* ```js
			* ngModule.controller('HomePageController', ['$animate', function($animate) {
			* $animate.on('enter', ngViewElement, function(element) {
			* // the animation for this route has completed
			* }]);
			* }])
			* ```
			*
			* (Note that you will need to trigger a digest within the callback to get angular to notice any scope-related changes.)
			*/

			var copy;
			var extend;
			var forEach;
			var isArray;
			var isDefined;
			var isElement;
			var isFunction;
			var isObject;
			var isString;
			var isUndefined;
			var jqLite;
			var noop;

			/**
			* @ngdoc service
			* @name $animate
			* @kind object
			*
			* @description
			* The ngAnimate `$animate` service documentation is the same for the core `$animate` service.
			*
			* Click here {@link ng.$animate to learn more about animations with `$animate`}.
			*/
			angular.module('ngAnimate', [], function initAngularHelpers() {
			// Access helpers from angular core.
			// Do it inside a `config` block to ensure `window.angular` is available.
			noop = angular.noop;
			copy = angular.copy;
			extend = angular.extend;
			jqLite = angular.element;
			forEach = angular.forEach;
			isArray = angular.isArray;
			isString = angular.isString;
			isObject = angular.isObject;
			isUndefined = angular.isUndefined;
			isDefined = angular.isDefined;
			isFunction = angular.isFunction;
			isElement = angular.isElement;
			})
			.directive('ngAnimateSwap', ngAnimateSwapDirective)

			.directive('ngAnimateChildren', $$AnimateChildrenDirective)
			.factory('$$rAFScheduler', $$rAFSchedulerFactory)

			.provider('$$animateQueue', $$AnimateQueueProvider)
			.provider('$$animation', $$AnimationProvider)

			.provider('$animateCss', $AnimateCssProvider)
			.provider('$$animateCssDriver', $$AnimateCssDriverProvider)

			.provider('$$animateJs', $$AnimateJsProvider)
			.provider('$$animateJsDriver', $$AnimateJsDriverProvider);


			})(window, window.angular);

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