/*!
 * Isotope PACKAGED v3.0.1
 *
 * Licensed GPLv3 for open source use
 * or Isotope Commercial License for commercial use
 *
 * http://isotope.metafizzy.co
 * Copyright 2016 Metafizzy
 */

/**
 * Bridget makes jQuery widgets
 * v2.0.0
 * MIT license
 */

/* jshint browser: true, strict: true, undef: true, unused: true */

( function( window, factory ) {
	'use strict';
	/* globals define: false, module: false, require: false */

	if ( typeof define == 'function' && define.amd ) {
		// AMD
		define( 'jquery-bridget/jquery-bridget',[ 'jquery' ], function( jQuery ) {
			factory( window, jQuery );
		});
	} else if ( typeof module == 'object' && module.exports ) {
		// CommonJS
		module.exports = factory(
			window,
			require('jquery')
		);
	} else {
		// browser global
		window.jQueryBridget = factory(
			window,
			window.jQuery
		);
	}

}( window, function factory( window, jQuery ) {
	'use strict';

// ----- utils ----- //

	var arraySlice = Array.prototype.slice;

// helper function for logging errors
// $.error breaks jQuery chaining
	var console = window.console;
	var logError = typeof console == 'undefined' ? function() {} :
		function( message ) {
			console.error( message );
		};

// ----- jQueryBridget ----- //

	function jQueryBridget( namespace, PluginClass, $ ) {
		$ = $ || jQuery || window.jQuery;
		if ( !$ ) {
			return;
		}

		// add option method -> $().plugin('option', {...})
		if ( !PluginClass.prototype.option ) {
			// option setter
			PluginClass.prototype.option = function( opts ) {
				// bail out if not an object
				if ( !$.isPlainObject( opts ) ){
					return;
				}
				this.options = $.extend( true, this.options, opts );
			};
		}

		// make jQuery plugin
		$.fn[ namespace ] = function( arg0 /*, arg1 */ ) {
			if ( typeof arg0 == 'string' ) {
				// method call $().plugin( 'methodName', { options } )
				// shift arguments by 1
				var args = arraySlice.call( arguments, 1 );
				return methodCall( this, arg0, args );
			}
			// just $().plugin({ options })
			plainCall( this, arg0 );
			return this;
		};

		// $().plugin('methodName')
		function methodCall( $elems, methodName, args ) {
			var returnValue;
			var pluginMethodStr = '$().' + namespace + '("' + methodName + '")';

			$elems.each( function( i, elem ) {
				// get instance
				var instance = $.data( elem, namespace );
				if ( !instance ) {
					logError( namespace + ' not initialized. Cannot call methods, i.e. ' +
						pluginMethodStr );
					return;
				}

				var method = instance[ methodName ];
				if ( !method || methodName.charAt(0) == '_' ) {
					logError( pluginMethodStr + ' is not a valid method' );
					return;
				}

				// apply method, get return value
				var value = method.apply( instance, args );
				// set return value if value is returned, use only first value
				returnValue = returnValue === undefined ? value : returnValue;
			});

			return returnValue !== undefined ? returnValue : $elems;
		}

		function plainCall( $elems, options ) {
			$elems.each( function( i, elem ) {
				var instance = $.data( elem, namespace );
				if ( instance ) {
					// set options & init
					instance.option( options );
					instance._init();
				} else {
					// initialize new instance
					instance = new PluginClass( elem, options );
					$.data( elem, namespace, instance );
				}
			});
		}

		updateJQuery( $ );

	}

// ----- updateJQuery ----- //

// set $.bridget for v1 backwards compatibility
	function updateJQuery( $ ) {
		if ( !$ || ( $ && $.bridget ) ) {
			return;
		}
		$.bridget = jQueryBridget;
	}

	updateJQuery( jQuery || window.jQuery );

// -----  ----- //

	return jQueryBridget;

}));

/**
 * EvEmitter v1.0.3
 * Lil' event emitter
 * MIT License
 */

/* jshint unused: true, undef: true, strict: true */

( function( global, factory ) {
	// universal module definition
	/* jshint strict: false */ /* globals define, module, window */
	if ( typeof define == 'function' && define.amd ) {
		// AMD - RequireJS
		define( 'ev-emitter/ev-emitter',factory );
	} else if ( typeof module == 'object' && module.exports ) {
		// CommonJS - Browserify, Webpack
		module.exports = factory();
	} else {
		// Browser globals
		global.EvEmitter = factory();
	}

}( typeof window != 'undefined' ? window : this, function() {



	function EvEmitter() {}

	var proto = EvEmitter.prototype;

	proto.on = function( eventName, listener ) {
		if ( !eventName || !listener ) {
			return;
		}
		// set events hash
		var events = this._events = this._events || {};
		// set listeners array
		var listeners = events[ eventName ] = events[ eventName ] || [];
		// only add once
		if ( listeners.indexOf( listener ) == -1 ) {
			listeners.push( listener );
		}

		return this;
	};

	proto.once = function( eventName, listener ) {
		if ( !eventName || !listener ) {
			return;
		}
		// add event
		this.on( eventName, listener );
		// set once flag
		// set onceEvents hash
		var onceEvents = this._onceEvents = this._onceEvents || {};
		// set onceListeners object
		var onceListeners = onceEvents[ eventName ] = onceEvents[ eventName ] || {};
		// set flag
		onceListeners[ listener ] = true;

		return this;
	};

	proto.off = function( eventName, listener ) {
		var listeners = this._events && this._events[ eventName ];
		if ( !listeners || !listeners.length ) {
			return;
		}
		var index = listeners.indexOf( listener );
		if ( index != -1 ) {
			listeners.splice( index, 1 );
		}

		return this;
	};

	proto.emitEvent = function( eventName, args ) {
		var listeners = this._events && this._events[ eventName ];
		if ( !listeners || !listeners.length ) {
			return;
		}
		var i = 0;
		var listener = listeners[i];
		args = args || [];
		// once stuff
		var onceListeners = this._onceEvents && this._onceEvents[ eventName ];

		while ( listener ) {
			var isOnce = onceListeners && onceListeners[ listener ];
			if ( isOnce ) {
				// remove listener
				// remove before trigger to prevent recursion
				this.off( eventName, listener );
				// unset once flag
				delete onceListeners[ listener ];
			}
			// trigger listener
			listener.apply( this, args );
			// get next listener
			i += isOnce ? 0 : 1;
			listener = listeners[i];
		}

		return this;
	};

	return EvEmitter;

}));

/*!
 * getSize v2.0.2
 * measure size of elements
 * MIT license
 */

/*jshint browser: true, strict: true, undef: true, unused: true */
/*global define: false, module: false, console: false */

( function( window, factory ) {
	'use strict';

	if ( typeof define == 'function' && define.amd ) {
		// AMD
		define( 'get-size/get-size',[],function() {
			return factory();
		});
	} else if ( typeof module == 'object' && module.exports ) {
		// CommonJS
		module.exports = factory();
	} else {
		// browser global
		window.getSize = factory();
	}

})( window, function factory() {
	'use strict';

// -------------------------- helpers -------------------------- //

// get a number from a string, not a percentage
	function getStyleSize( value ) {
		var num = parseFloat( value );
		// not a percent like '100%', and a number
		var isValid = value.indexOf('%') == -1 && !isNaN( num );
		return isValid && num;
	}

	function noop() {}

	var logError = typeof console == 'undefined' ? noop :
		function( message ) {
			console.error( message );
		};

// -------------------------- measurements -------------------------- //

	var measurements = [
		'paddingLeft',
		'paddingRight',
		'paddingTop',
		'paddingBottom',
		'marginLeft',
		'marginRight',
		'marginTop',
		'marginBottom',
		'borderLeftWidth',
		'borderRightWidth',
		'borderTopWidth',
		'borderBottomWidth'
	];

	var measurementsLength = measurements.length;

	function getZeroSize() {
		var size = {
			width: 0,
			height: 0,
			innerWidth: 0,
			innerHeight: 0,
			outerWidth: 0,
			outerHeight: 0
		};
		for ( var i=0; i < measurementsLength; i++ ) {
			var measurement = measurements[i];
			size[ measurement ] = 0;
		}
		return size;
	}

// -------------------------- getStyle -------------------------- //

	/**
	 * getStyle, get style of element, check for Firefox bug
	 * https://bugzilla.mozilla.org/show_bug.cgi?id=548397
	 */
	function getStyle( elem ) {
		var style = getComputedStyle( elem );
		if ( !style ) {
			logError( 'Style returned ' + style +
				'. Are you running this code in a hidden iframe on Firefox? ' +
				'See http://bit.ly/getsizebug1' );
		}
		return style;
	}

// -------------------------- setup -------------------------- //

	var isSetup = false;

	var isBoxSizeOuter;

	/**
	 * setup
	 * check isBoxSizerOuter
	 * do on first getSize() rather than on page load for Firefox bug
	 */
	function setup() {
		// setup once
		if ( isSetup ) {
			return;
		}
		isSetup = true;

		// -------------------------- box sizing -------------------------- //

		/**
		 * WebKit measures the outer-width on style.width on border-box elems
		 * IE & Firefox<29 measures the inner-width
		 */
		var div = document.createElement('div');
		div.style.width = '200px';
		div.style.padding = '1px 2px 3px 4px';
		div.style.borderStyle = 'solid';
		div.style.borderWidth = '1px 2px 3px 4px';
		div.style.boxSizing = 'border-box';

		var body = document.body || document.documentElement;
		body.appendChild( div );
		var style = getStyle( div );

		getSize.isBoxSizeOuter = isBoxSizeOuter = getStyleSize( style.width ) == 200;
		body.removeChild( div );

	}

// -------------------------- getSize -------------------------- //

	function getSize( elem ) {
		setup();

		// use querySeletor if elem is string
		if ( typeof elem == 'string' ) {
			elem = document.querySelector( elem );
		}

		// do not proceed on non-objects
		if ( !elem || typeof elem != 'object' || !elem.nodeType ) {
			return;
		}

		var style = getStyle( elem );

		// if hidden, everything is 0
		if ( style.display == 'none' ) {
			return getZeroSize();
		}

		var size = {};
		size.width = elem.offsetWidth;
		size.height = elem.offsetHeight;

		var isBorderBox = size.isBorderBox = style.boxSizing == 'border-box';

		// get all measurements
		for ( var i=0; i < measurementsLength; i++ ) {
			var measurement = measurements[i];
			var value = style[ measurement ];
			var num = parseFloat( value );
			// any 'auto', 'medium' value will be 0
			size[ measurement ] = !isNaN( num ) ? num : 0;
		}

		var paddingWidth = size.paddingLeft + size.paddingRight;
		var paddingHeight = size.paddingTop + size.paddingBottom;
		var marginWidth = size.marginLeft + size.marginRight;
		var marginHeight = size.marginTop + size.marginBottom;
		var borderWidth = size.borderLeftWidth + size.borderRightWidth;
		var borderHeight = size.borderTopWidth + size.borderBottomWidth;

		var isBorderBoxSizeOuter = isBorderBox && isBoxSizeOuter;

		// overwrite width and height if we can get it from style
		var styleWidth = getStyleSize( style.width );
		if ( styleWidth !== false ) {
			size.width = styleWidth +
				// add padding and border unless it's already including it
				( isBorderBoxSizeOuter ? 0 : paddingWidth + borderWidth );
		}

		var styleHeight = getStyleSize( style.height );
		if ( styleHeight !== false ) {
			size.height = styleHeight +
				// add padding and border unless it's already including it
				( isBorderBoxSizeOuter ? 0 : paddingHeight + borderHeight );
		}

		size.innerWidth = size.width - ( paddingWidth + borderWidth );
		size.innerHeight = size.height - ( paddingHeight + borderHeight );

		size.outerWidth = size.width + marginWidth;
		size.outerHeight = size.height + marginHeight;

		return size;
	}

	return getSize;

});

/**
 * matchesSelector v2.0.1
 * matchesSelector( element, '.selector' )
 * MIT license
 */

/*jshint browser: true, strict: true, undef: true, unused: true */

( function( window, factory ) {
	/*global define: false, module: false */
	'use strict';
	// universal module definition
	if ( typeof define == 'function' && define.amd ) {
		// AMD
		define( 'desandro-matches-selector/matches-selector',factory );
	} else if ( typeof module == 'object' && module.exports ) {
		// CommonJS
		module.exports = factory();
	} else {
		// browser global
		window.matchesSelector = factory();
	}

}( window, function factory() {
	'use strict';

	var matchesMethod = ( function() {
		var ElemProto = Element.prototype;
		// check for the standard method name first
		if ( ElemProto.matches ) {
			return 'matches';
		}
		// check un-prefixed
		if ( ElemProto.matchesSelector ) {
			return 'matchesSelector';
		}
		// check vendor prefixes
		var prefixes = [ 'webkit', 'moz', 'ms', 'o' ];

		for ( var i=0; i < prefixes.length; i++ ) {
			var prefix = prefixes[i];
			var method = prefix + 'MatchesSelector';
			if ( ElemProto[ method ] ) {
				return method;
			}
		}
	})();

	return function matchesSelector( elem, selector ) {
		return elem[ matchesMethod ]( selector );
	};

}));

/**
 * Fizzy UI utils v2.0.2
 * MIT license
 */

/*jshint browser: true, undef: true, unused: true, strict: true */

( function( window, factory ) {
	// universal module definition
	/*jshint strict: false */ /*globals define, module, require */

	if ( typeof define == 'function' && define.amd ) {
		// AMD
		define( 'fizzy-ui-utils/utils',[
			'desandro-matches-selector/matches-selector'
		], function( matchesSelector ) {
			return factory( window, matchesSelector );
		});
	} else if ( typeof module == 'object' && module.exports ) {
		// CommonJS
		module.exports = factory(
			window,
			require('desandro-matches-selector')
		);
	} else {
		// browser global
		window.fizzyUIUtils = factory(
			window,
			window.matchesSelector
		);
	}

}( window, function factory( window, matchesSelector ) {



	var utils = {};

// ----- extend ----- //

// extends objects
	utils.extend = function( a, b ) {
		for ( var prop in b ) {
			a[ prop ] = b[ prop ];
		}
		return a;
	};

// ----- modulo ----- //

	utils.modulo = function( num, div ) {
		return ( ( num % div ) + div ) % div;
	};

// ----- makeArray ----- //

// turn element or nodeList into an array
	utils.makeArray = function( obj ) {
		var ary = [];
		if ( Array.isArray( obj ) ) {
			// use object if already an array
			ary = obj;
		} else if ( obj && typeof obj.length == 'number' ) {
			// convert nodeList to array
			for ( var i=0; i < obj.length; i++ ) {
				ary.push( obj[i] );
			}
		} else {
			// array of single index
			ary.push( obj );
		}
		return ary;
	};

// ----- removeFrom ----- //

	utils.removeFrom = function( ary, obj ) {
		var index = ary.indexOf( obj );
		if ( index != -1 ) {
			ary.splice( index, 1 );
		}
	};

// ----- getParent ----- //

	utils.getParent = function( elem, selector ) {
		while ( elem != document.body ) {
			elem = elem.parentNode;
			if ( matchesSelector( elem, selector ) ) {
				return elem;
			}
		}
	};

// ----- getQueryElement ----- //

// use element as selector string
	utils.getQueryElement = function( elem ) {
		if ( typeof elem == 'string' ) {
			return document.querySelector( elem );
		}
		return elem;
	};

// ----- handleEvent ----- //

// enable .ontype to trigger from .addEventListener( elem, 'type' )
	utils.handleEvent = function( event ) {
		var method = 'on' + event.type;
		if ( this[ method ] ) {
			this[ method ]( event );
		}
	};

// ----- filterFindElements ----- //

	utils.filterFindElements = function( elems, selector ) {
		// make array of elems
		elems = utils.makeArray( elems );
		var ffElems = [];

		elems.forEach( function( elem ) {
			// check that elem is an actual element
			if ( !( elem instanceof HTMLElement ) ) {
				return;
			}
			// add elem if no selector
			if ( !selector ) {
				ffElems.push( elem );
				return;
			}
			// filter & find items if we have a selector
			// filter
			if ( matchesSelector( elem, selector ) ) {
				ffElems.push( elem );
			}
			// find children
			var childElems = elem.querySelectorAll( selector );
			// concat childElems to filterFound array
			for ( var i=0; i < childElems.length; i++ ) {
				ffElems.push( childElems[i] );
			}
		});

		return ffElems;
	};

// ----- debounceMethod ----- //

	utils.debounceMethod = function( _class, methodName, threshold ) {
		// original method
		var method = _class.prototype[ methodName ];
		var timeoutName = methodName + 'Timeout';

		_class.prototype[ methodName ] = function() {
			var timeout = this[ timeoutName ];
			if ( timeout ) {
				clearTimeout( timeout );
			}
			var args = arguments;

			var _this = this;
			this[ timeoutName ] = setTimeout( function() {
				method.apply( _this, args );
				delete _this[ timeoutName ];
			}, threshold || 100 );
		};
	};

// ----- docReady ----- //

	utils.docReady = function( callback ) {
		var readyState = document.readyState;
		if ( readyState == 'complete' || readyState == 'interactive' ) {
			callback();
		} else {
			document.addEventListener( 'DOMContentLoaded', callback );
		}
	};

// ----- htmlInit ----- //

// http://jamesroberts.name/blog/2010/02/22/string-functions-for-javascript-trim-to-camel-case-to-dashed-and-to-underscore/
	utils.toDashed = function( str ) {
		return str.replace( /(.)([A-Z])/g, function( match, $1, $2 ) {
			return $1 + '-' + $2;
		}).toLowerCase();
	};

	var console = window.console;
	/**
	 * allow user to initialize classes via [data-namespace] or .js-namespace class
	 * htmlInit( Widget, 'widgetName' )
	 * options are parsed from data-namespace-options
	 */
	utils.htmlInit = function( WidgetClass, namespace ) {
		utils.docReady( function() {
			var dashedNamespace = utils.toDashed( namespace );
			var dataAttr = 'data-' + dashedNamespace;
			var dataAttrElems = document.querySelectorAll( '[' + dataAttr + ']' );
			var jsDashElems = document.querySelectorAll( '.js-' + dashedNamespace );
			var elems = utils.makeArray( dataAttrElems )
				.concat( utils.makeArray( jsDashElems ) );
			var dataOptionsAttr = dataAttr + '-options';
			var jQuery = window.jQuery;

			elems.forEach( function( elem ) {
				var attr = elem.getAttribute( dataAttr ) ||
					elem.getAttribute( dataOptionsAttr );
				var options;
				try {
					options = attr && JSON.parse( attr );
				} catch ( error ) {
					// log error, do not initialize
					if ( console ) {
						console.error( 'Error parsing ' + dataAttr + ' on ' + elem.className +
							': ' + error );
					}
					return;
				}
				// initialize
				var instance = new WidgetClass( elem, options );
				// make available via $().data('layoutname')
				if ( jQuery ) {
					jQuery.data( elem, namespace, instance );
				}
			});

		});
	};

// -----  ----- //

	return utils;

}));

/**
 * Outlayer Item
 */

( function( window, factory ) {
	// universal module definition
	/* jshint strict: false */ /* globals define, module, require */
	if ( typeof define == 'function' && define.amd ) {
		// AMD - RequireJS
		define( 'outlayer/item',[
				'ev-emitter/ev-emitter',
				'get-size/get-size'
			],
			factory
		);
	} else if ( typeof module == 'object' && module.exports ) {
		// CommonJS - Browserify, Webpack
		module.exports = factory(
			require('ev-emitter'),
			require('get-size')
		);
	} else {
		// browser global
		window.Outlayer = {};
		window.Outlayer.Item = factory(
			window.EvEmitter,
			window.getSize
		);
	}

}( window, function factory( EvEmitter, getSize ) {
	'use strict';

// ----- helpers ----- //

	function isEmptyObj( obj ) {
		for ( var prop in obj ) {
			return false;
		}
		prop = null;
		return true;
	}

// -------------------------- CSS3 support -------------------------- //


	var docElemStyle = document.documentElement.style;

	var transitionProperty = typeof docElemStyle.transition == 'string' ?
		'transition' : 'WebkitTransition';
	var transformProperty = typeof docElemStyle.transform == 'string' ?
		'transform' : 'WebkitTransform';

	var transitionEndEvent = {
		WebkitTransition: 'webkitTransitionEnd',
		transition: 'transitionend'
	}[ transitionProperty ];

// cache all vendor properties that could have vendor prefix
	var vendorProperties = {
		transform: transformProperty,
		transition: transitionProperty,
		transitionDuration: transitionProperty + 'Duration',
		transitionProperty: transitionProperty + 'Property',
		transitionDelay: transitionProperty + 'Delay'
	};

// -------------------------- Item -------------------------- //

	function Item( element, layout ) {
		if ( !element ) {
			return;
		}

		this.element = element;
		// parent layout class, i.e. Masonry, Isotope, or Packery
		this.layout = layout;
		this.position = {
			x: 0,
			y: 0
		};

		this._create();
	}

// inherit EvEmitter
	var proto = Item.prototype = Object.create( EvEmitter.prototype );
	proto.constructor = Item;

	proto._create = function() {
		// transition objects
		this._transn = {
			ingProperties: {},
			clean: {},
			onEnd: {}
		};

		this.css({
			position: 'absolute'
		});
	};

// trigger specified handler for event type
	proto.handleEvent = function( event ) {
		var method = 'on' + event.type;
		if ( this[ method ] ) {
			this[ method ]( event );
		}
	};

	proto.getSize = function() {
		this.size = getSize( this.element );
	};

	/**
	 * apply CSS styles to element
	 * @param {Object} style
	 */
	proto.css = function( style ) {
		var elemStyle = this.element.style;

		for ( var prop in style ) {
			// use vendor property if available
			var supportedProp = vendorProperties[ prop ] || prop;
			elemStyle[ supportedProp ] = style[ prop ];
		}
	};

	// measure position, and sets it
	proto.getPosition = function() {
		var style = getComputedStyle( this.element );
		var isOriginLeft = this.layout._getOption('originLeft');
		var isOriginTop = this.layout._getOption('originTop');
		var xValue = style[ isOriginLeft ? 'left' : 'right' ];
		var yValue = style[ isOriginTop ? 'top' : 'bottom' ];
		// convert percent to pixels
		var layoutSize = this.layout.size;
		var x = xValue.indexOf('%') != -1 ?
			( parseFloat( xValue ) / 100 ) * layoutSize.width : parseInt( xValue, 10 );
		var y = yValue.indexOf('%') != -1 ?
			( parseFloat( yValue ) / 100 ) * layoutSize.height : parseInt( yValue, 10 );

		// clean up 'auto' or other non-integer values
		x = isNaN( x ) ? 0 : x;
		y = isNaN( y ) ? 0 : y;
		// remove padding from measurement
		x -= isOriginLeft ? layoutSize.paddingLeft : layoutSize.paddingRight;
		y -= isOriginTop ? layoutSize.paddingTop : layoutSize.paddingBottom;

		this.position.x = x;
		this.position.y = y;
	};

// set settled position, apply padding
	proto.layoutPosition = function() {
		var layoutSize = this.layout.size;
		var style = {};
		var isOriginLeft = this.layout._getOption('originLeft');
		var isOriginTop = this.layout._getOption('originTop');

		// x
		var xPadding = isOriginLeft ? 'paddingLeft' : 'paddingRight';
		var xProperty = isOriginLeft ? 'left' : 'right';
		var xResetProperty = isOriginLeft ? 'right' : 'left';

		var x = this.position.x + layoutSize[ xPadding ];
		// set in percentage or pixels
		style[ xProperty ] = this.getXValue( x );
		// reset other property
		style[ xResetProperty ] = '';

		// y
		var yPadding = isOriginTop ? 'paddingTop' : 'paddingBottom';
		var yProperty = isOriginTop ? 'top' : 'bottom';
		var yResetProperty = isOriginTop ? 'bottom' : 'top';

		var y = this.position.y + layoutSize[ yPadding ];
		// set in percentage or pixels
		style[ yProperty ] = this.getYValue( y );
		// reset other property
		style[ yResetProperty ] = '';

		this.css( style );
		this.emitEvent( 'layout', [ this ] );
	};

	proto.getXValue = function( x ) {
		var isHorizontal = this.layout._getOption('horizontal');
		return this.layout.options.percentPosition && !isHorizontal ?
			( ( x / this.layout.size.width ) * 100 ) + '%' : x + 'px';
	};

	proto.getYValue = function( y ) {
		var isHorizontal = this.layout._getOption('horizontal');
		return this.layout.options.percentPosition && isHorizontal ?
			( ( y / this.layout.size.height ) * 100 ) + '%' : y + 'px';
	};

	proto._transitionTo = function( x, y ) {
		this.getPosition();
		// get current x & y from top/left
		var curX = this.position.x;
		var curY = this.position.y;

		var compareX = parseInt( x, 10 );
		var compareY = parseInt( y, 10 );
		var didNotMove = compareX === this.position.x && compareY === this.position.y;

		// save end position
		this.setPosition( x, y );

		// if did not move and not transitioning, just go to layout
		if ( didNotMove && !this.isTransitioning ) {
			this.layoutPosition();
			return;
		}

		var transX = x - curX;
		var transY = y - curY;
		var transitionStyle = {};
		transitionStyle.transform = this.getTranslate( transX, transY );

		this.transition({
			to: transitionStyle,
			onTransitionEnd: {
				transform: this.layoutPosition
			},
			isCleaning: true
		});
	};

	proto.getTranslate = function( x, y ) {
		// flip cooridinates if origin on right or bottom
		var isOriginLeft = this.layout._getOption('originLeft');
		var isOriginTop = this.layout._getOption('originTop');
		x = isOriginLeft ? x : -x;
		y = isOriginTop ? y : -y;
		return 'translate3d(' + x + 'px, ' + y + 'px, 0)';
	};

// non transition + transform support
	proto.goTo = function( x, y ) {
		this.setPosition( x, y );
		this.layoutPosition();
	};

	proto.moveTo = proto._transitionTo;

	proto.setPosition = function( x, y ) {
		this.position.x = parseInt( x, 10 );
		this.position.y = parseInt( y, 10 );
	};

// ----- transition ----- //

	/**
	 * @param {Object} style - CSS
	 * @param {Function} onTransitionEnd
	 */

// non transition, just trigger callback
	proto._nonTransition = function( args ) {
		this.css( args.to );
		if ( args.isCleaning ) {
			this._removeStyles( args.to );
		}
		for ( var prop in args.onTransitionEnd ) {
			args.onTransitionEnd[ prop ].call( this );
		}
	};

	/**
	 * proper transition
	 * @param {Object} args - arguments
	 *   @param {Object} to - style to transition to
	 *   @param {Object} from - style to start transition from
	 *   @param {Boolean} isCleaning - removes transition styles after transition
	 *   @param {Function} onTransitionEnd - callback
	 */
	proto.transition = function( args ) {
		// redirect to nonTransition if no transition duration
		if ( !parseFloat( this.layout.options.transitionDuration ) ) {
			this._nonTransition( args );
			return;
		}

		var _transition = this._transn;
		// keep track of onTransitionEnd callback by css property
		for ( var prop in args.onTransitionEnd ) {
			_transition.onEnd[ prop ] = args.onTransitionEnd[ prop ];
		}
		// keep track of properties that are transitioning
		for ( prop in args.to ) {
			_transition.ingProperties[ prop ] = true;
			// keep track of properties to clean up when transition is done
			if ( args.isCleaning ) {
				_transition.clean[ prop ] = true;
			}
		}

		// set from styles
		if ( args.from ) {
			this.css( args.from );
			// force redraw. http://blog.alexmaccaw.com/css-transitions
			var h = this.element.offsetHeight;
			// hack for JSHint to hush about unused var
			h = null;
		}
		// enable transition
		this.enableTransition( args.to );
		// set styles that are transitioning
		this.css( args.to );

		this.isTransitioning = true;

	};

// dash before all cap letters, including first for
// WebkitTransform => -webkit-transform
	function toDashedAll( str ) {
		return str.replace( /([A-Z])/g, function( $1 ) {
			return '-' + $1.toLowerCase();
		});
	}

	var transitionProps = 'opacity,' + toDashedAll( transformProperty );

	proto.enableTransition = function(/* style */) {
		// HACK changing transitionProperty during a transition
		// will cause transition to jump
		if ( this.isTransitioning ) {
			return;
		}

		// make `transition: foo, bar, baz` from style object
		// HACK un-comment this when enableTransition can work
		// while a transition is happening
		// var transitionValues = [];
		// for ( var prop in style ) {
		//   // dash-ify camelCased properties like WebkitTransition
		//   prop = vendorProperties[ prop ] || prop;
		//   transitionValues.push( toDashedAll( prop ) );
		// }
		// munge number to millisecond, to match stagger
		var duration = this.layout.options.transitionDuration;
		duration = typeof duration == 'number' ? duration + 'ms' : duration;
		// enable transition styles
		this.css({
			transitionProperty: transitionProps,
			transitionDuration: duration,
			transitionDelay: this.staggerDelay || 0
		});
		// listen for transition end event
		this.element.addEventListener( transitionEndEvent, this, false );
	};

// ----- events ----- //

	proto.onwebkitTransitionEnd = function( event ) {
		this.ontransitionend( event );
	};

	proto.onotransitionend = function( event ) {
		this.ontransitionend( event );
	};

// properties that I munge to make my life easier
	var dashedVendorProperties = {
		'-webkit-transform': 'transform'
	};

	proto.ontransitionend = function( event ) {
		// disregard bubbled events from children
		if ( event.target !== this.element ) {
			return;
		}
		var _transition = this._transn;
		// get property name of transitioned property, convert to prefix-free
		var propertyName = dashedVendorProperties[ event.propertyName ] || event.propertyName;

		// remove property that has completed transitioning
		delete _transition.ingProperties[ propertyName ];
		// check if any properties are still transitioning
		if ( isEmptyObj( _transition.ingProperties ) ) {
			// all properties have completed transitioning
			this.disableTransition();
		}
		// clean style
		if ( propertyName in _transition.clean ) {
			// clean up style
			this.element.style[ event.propertyName ] = '';
			delete _transition.clean[ propertyName ];
		}
		// trigger onTransitionEnd callback
		if ( propertyName in _transition.onEnd ) {
			var onTransitionEnd = _transition.onEnd[ propertyName ];
			onTransitionEnd.call( this );
			delete _transition.onEnd[ propertyName ];
		}

		this.emitEvent( 'transitionEnd', [ this ] );
	};

	proto.disableTransition = function() {
		this.removeTransitionStyles();
		this.element.removeEventListener( transitionEndEvent, this, false );
		this.isTransitioning = false;
	};

	/**
	 * removes style property from element
	 * @param {Object} style
	 **/
	proto._removeStyles = function( style ) {
		// clean up transition styles
		var cleanStyle = {};
		for ( var prop in style ) {
			cleanStyle[ prop ] = '';
		}
		this.css( cleanStyle );
	};

	var cleanTransitionStyle = {
		transitionProperty: '',
		transitionDuration: '',
		transitionDelay: ''
	};

	proto.removeTransitionStyles = function() {
		// remove transition
		this.css( cleanTransitionStyle );
	};

// ----- stagger ----- //

	proto.stagger = function( delay ) {
		delay = isNaN( delay ) ? 0 : delay;
		this.staggerDelay = delay + 'ms';
	};

// ----- show/hide/remove ----- //

// remove element from DOM
	proto.removeElem = function() {
		this.element.parentNode.removeChild( this.element );
		// remove display: none
		this.css({ display: '' });
		this.emitEvent( 'remove', [ this ] );
	};

	proto.remove = function() {
		// just remove element if no transition support or no transition
		if ( !transitionProperty || !parseFloat( this.layout.options.transitionDuration ) ) {
			this.removeElem();
			return;
		}

		// start transition
		this.once( 'transitionEnd', function() {
			this.removeElem();
		});
		this.hide();
	};

	proto.reveal = function() {
		delete this.isHidden;
		// remove display: none
		this.css({ display: '' });

		var options = this.layout.options;

		var onTransitionEnd = {};
		var transitionEndProperty = this.getHideRevealTransitionEndProperty('visibleStyle');
		onTransitionEnd[ transitionEndProperty ] = this.onRevealTransitionEnd;

		this.transition({
			from: options.hiddenStyle,
			to: options.visibleStyle,
			isCleaning: true,
			onTransitionEnd: onTransitionEnd
		});
	};

	proto.onRevealTransitionEnd = function() {
		// check if still visible
		// during transition, item may have been hidden
		if ( !this.isHidden ) {
			this.emitEvent('reveal');
		}
	};

	/**
	 * get style property use for hide/reveal transition end
	 * @param {String} styleProperty - hiddenStyle/visibleStyle
	 * @returns {String}
	 */
	proto.getHideRevealTransitionEndProperty = function( styleProperty ) {
		var optionStyle = this.layout.options[ styleProperty ];
		// use opacity
		if ( optionStyle.opacity ) {
			return 'opacity';
		}
		// get first property
		for ( var prop in optionStyle ) {
			return prop;
		}
	};

	proto.hide = function() {
		// set flag
		this.isHidden = true;
		// remove display: none
		this.css({ display: '' });

		var options = this.layout.options;

		var onTransitionEnd = {};
		var transitionEndProperty = this.getHideRevealTransitionEndProperty('hiddenStyle');
		onTransitionEnd[ transitionEndProperty ] = this.onHideTransitionEnd;

		this.transition({
			from: options.visibleStyle,
			to: options.hiddenStyle,
			// keep hidden stuff hidden
			isCleaning: true,
			onTransitionEnd: onTransitionEnd
		});
	};

	proto.onHideTransitionEnd = function() {
		// check if still hidden
		// during transition, item may have been un-hidden
		if ( this.isHidden ) {
			this.css({ display: 'none' });
			this.emitEvent('hide');
		}
	};

	proto.destroy = function() {
		this.css({
			position: '',
			left: '',
			right: '',
			top: '',
			bottom: '',
			transition: '',
			transform: ''
		});
	};

	return Item;

}));

/*!
 * Outlayer v2.1.0
 * the brains and guts of a layout library
 * MIT license
 */

( function( window, factory ) {
	'use strict';
	// universal module definition
	/* jshint strict: false */ /* globals define, module, require */
	if ( typeof define == 'function' && define.amd ) {
		// AMD - RequireJS
		define( 'outlayer/outlayer',[
				'ev-emitter/ev-emitter',
				'get-size/get-size',
				'fizzy-ui-utils/utils',
				'./item'
			],
			function( EvEmitter, getSize, utils, Item ) {
				return factory( window, EvEmitter, getSize, utils, Item);
			}
		);
	} else if ( typeof module == 'object' && module.exports ) {
		// CommonJS - Browserify, Webpack
		module.exports = factory(
			window,
			require('ev-emitter'),
			require('get-size'),
			require('fizzy-ui-utils'),
			require('./item')
		);
	} else {
		// browser global
		window.Outlayer = factory(
			window,
			window.EvEmitter,
			window.getSize,
			window.fizzyUIUtils,
			window.Outlayer.Item
		);
	}

}( window, function factory( window, EvEmitter, getSize, utils, Item ) {
	'use strict';

// ----- vars ----- //

	var console = window.console;
	var jQuery = window.jQuery;
	var noop = function() {};

// -------------------------- Outlayer -------------------------- //

// globally unique identifiers
	var GUID = 0;
// internal store of all Outlayer intances
	var instances = {};


	/**
	 * @param {Element, String} element
	 * @param {Object} options
	 * @constructor
	 */
	function Outlayer( element, options ) {
		var queryElement = utils.getQueryElement( element );
		if ( !queryElement ) {
			if ( console ) {
				console.error( 'Bad element for ' + this.constructor.namespace +
					': ' + ( queryElement || element ) );
			}
			return;
		}
		this.element = queryElement;
		// add jQuery
		if ( jQuery ) {
			this.$element = jQuery( this.element );
		}

		// options
		this.options = utils.extend( {}, this.constructor.defaults );
		this.option( options );

		// add id for Outlayer.getFromElement
		var id = ++GUID;
		this.element.outlayerGUID = id; // expando
		instances[ id ] = this; // associate via id

		// kick it off
		this._create();

		var isInitLayout = this._getOption('initLayout');
		if ( isInitLayout ) {
			this.layout();
		}
	}

// settings are for internal use only
	Outlayer.namespace = 'outlayer';
	Outlayer.Item = Item;

// default options
	Outlayer.defaults = {
		containerStyle: {
			position: 'relative'
		},
		initLayout: true,
		originLeft: true,
		originTop: true,
		resize: true,
		resizeContainer: true,
		// item options
		transitionDuration: '0.4s',
		hiddenStyle: {
			opacity: 0,
			transform: 'scale(0.001)'
		},
		visibleStyle: {
			opacity: 1,
			transform: 'scale(1)'
		}
	};

	var proto = Outlayer.prototype;
// inherit EvEmitter
	utils.extend( proto, EvEmitter.prototype );

	/**
	 * set options
	 * @param {Object} opts
	 */
	proto.option = function( opts ) {
		utils.extend( this.options, opts );
	};

	/**
	 * get backwards compatible option value, check old name
	 */
	proto._getOption = function( option ) {
		var oldOption = this.constructor.compatOptions[ option ];
		return oldOption && this.options[ oldOption ] !== undefined ?
			this.options[ oldOption ] : this.options[ option ];
	};

	Outlayer.compatOptions = {
		// currentName: oldName
		initLayout: 'isInitLayout',
		horizontal: 'isHorizontal',
		layoutInstant: 'isLayoutInstant',
		originLeft: 'isOriginLeft',
		originTop: 'isOriginTop',
		resize: 'isResizeBound',
		resizeContainer: 'isResizingContainer'
	};

	proto._create = function() {
		// get items from children
		this.reloadItems();
		// elements that affect layout, but are not laid out
		this.stamps = [];
		this.stamp( this.options.stamp );
		// set container style
		utils.extend( this.element.style, this.options.containerStyle );

		// bind resize method
		var canBindResize = this._getOption('resize');
		if ( canBindResize ) {
			this.bindResize();
		}
	};

// goes through all children again and gets bricks in proper order
	proto.reloadItems = function() {
		// collection of item elements
		this.items = this._itemize( this.element.children );
	};


	/**
	 * turn elements into Outlayer.Items to be used in layout
	 * @param {Array or NodeList or HTMLElement} elems
	 * @returns {Array} items - collection of new Outlayer Items
	 */
	proto._itemize = function( elems ) {

		var itemElems = this._filterFindItemElements( elems );
		var Item = this.constructor.Item;

		// create new Outlayer Items for collection
		var items = [];
		for ( var i=0; i < itemElems.length; i++ ) {
			var elem = itemElems[i];
			var item = new Item( elem, this );
			items.push( item );
		}

		return items;
	};

	/**
	 * get item elements to be used in layout
	 * @param {Array or NodeList or HTMLElement} elems
	 * @returns {Array} items - item elements
	 */
	proto._filterFindItemElements = function( elems ) {
		return utils.filterFindElements( elems, this.options.itemSelector );
	};

	/**
	 * getter method for getting item elements
	 * @returns {Array} elems - collection of item elements
	 */
	proto.getItemElements = function() {
		return this.items.map( function( item ) {
			return item.element;
		});
	};

// ----- init & layout ----- //

	/**
	 * lays out all items
	 */
	proto.layout = function() {
		this._resetLayout();
		this._manageStamps();

		// don't animate first layout
		var layoutInstant = this._getOption('layoutInstant');
		var isInstant = layoutInstant !== undefined ?
			layoutInstant : !this._isLayoutInited;
		this.layoutItems( this.items, isInstant );

		// flag for initalized
		this._isLayoutInited = true;
	};

// _init is alias for layout
	proto._init = proto.layout;

	/**
	 * logic before any new layout
	 */
	proto._resetLayout = function() {
		this.getSize();
	};


	proto.getSize = function() {
		this.size = getSize( this.element );
	};

	/**
	 * get measurement from option, for columnWidth, rowHeight, gutter
	 * if option is String -> get element from selector string, & get size of element
	 * if option is Element -> get size of element
	 * else use option as a number
	 *
	 * @param {String} measurement
	 * @param {String} size - width or height
	 * @private
	 */
	proto._getMeasurement = function( measurement, size ) {
		var option = this.options[ measurement ];
		var elem;
		if ( !option ) {
			// default to 0
			this[ measurement ] = 0;
		} else {
			// use option as an element
			if ( typeof option == 'string' ) {
				elem = this.element.querySelector( option );
			} else if ( option instanceof HTMLElement ) {
				elem = option;
			}
			// use size of element, if element
			this[ measurement ] = elem ? getSize( elem )[ size ] : option;
		}
	};

	/**
	 * layout a collection of item elements
	 * @api public
	 */
	proto.layoutItems = function( items, isInstant ) {
		items = this._getItemsForLayout( items );

		this._layoutItems( items, isInstant );

		this._postLayout();
	};

	/**
	 * get the items to be laid out
	 * you may want to skip over some items
	 * @param {Array} items
	 * @returns {Array} items
	 */
	proto._getItemsForLayout = function( items ) {
		return items.filter( function( item ) {
			return !item.isIgnored;
		});
	};

	/**
	 * layout items
	 * @param {Array} items
	 * @param {Boolean} isInstant
	 */
	proto._layoutItems = function( items, isInstant ) {
		this._emitCompleteOnItems( 'layout', items );

		if ( !items || !items.length ) {
			// no items, emit event with empty array
			return;
		}

		var queue = [];

		items.forEach( function( item ) {
			// get x/y object from method
			var position = this._getItemLayoutPosition( item );
			// enqueue
			position.item = item;
			position.isInstant = isInstant || item.isLayoutInstant;
			queue.push( position );
		}, this );

		this._processLayoutQueue( queue );
	};

	/**
	 * get item layout position
	 * @param {Outlayer.Item} item
	 * @returns {Object} x and y position
	 */
	proto._getItemLayoutPosition = function( /* item */ ) {
		return {
			x: 0,
			y: 0
		};
	};

	/**
	 * iterate over array and position each item
	 * Reason being - separating this logic prevents 'layout invalidation'
	 * thx @paul_irish
	 * @param {Array} queue
	 */
	proto._processLayoutQueue = function( queue ) {
		this.updateStagger();
		queue.forEach( function( obj, i ) {
			this._positionItem( obj.item, obj.x, obj.y, obj.isInstant, i );
		}, this );
	};

// set stagger from option in milliseconds number
	proto.updateStagger = function() {
		var stagger = this.options.stagger;
		if ( stagger === null || stagger === undefined ) {
			this.stagger = 0;
			return;
		}
		this.stagger = getMilliseconds( stagger );
		return this.stagger;
	};

	/**
	 * Sets position of item in DOM
	 * @param {Outlayer.Item} item
	 * @param {Number} x - horizontal position
	 * @param {Number} y - vertical position
	 * @param {Boolean} isInstant - disables transitions
	 */
	proto._positionItem = function( item, x, y, isInstant, i ) {
		if ( isInstant ) {
			// if not transition, just set CSS
			item.goTo( x, y );
		} else {
			item.stagger( i * this.stagger );
			item.moveTo( x, y );
		}
	};

	/**
	 * Any logic you want to do after each layout,
	 * i.e. size the container
	 */
	proto._postLayout = function() {
		this.resizeContainer();
	};

	proto.resizeContainer = function() {
		var isResizingContainer = this._getOption('resizeContainer');
		if ( !isResizingContainer ) {
			return;
		}
		var size = this._getContainerSize();
		if ( size ) {
			this._setContainerMeasure( size.width, true );
			this._setContainerMeasure( size.height, false );
		}
	};

	/**
	 * Sets width or height of container if returned
	 * @returns {Object} size
	 *   @param {Number} width
	 *   @param {Number} height
	 */
	proto._getContainerSize = noop;

	/**
	 * @param {Number} measure - size of width or height
	 * @param {Boolean} isWidth
	 */
	proto._setContainerMeasure = function( measure, isWidth ) {
		if ( measure === undefined ) {
			return;
		}

		var elemSize = this.size;
		// add padding and border width if border box
		if ( elemSize.isBorderBox ) {
			measure += isWidth ? elemSize.paddingLeft + elemSize.paddingRight +
				elemSize.borderLeftWidth + elemSize.borderRightWidth :
				elemSize.paddingBottom + elemSize.paddingTop +
				elemSize.borderTopWidth + elemSize.borderBottomWidth;
		}

		measure = Math.max( measure, 0 );
		this.element.style[ isWidth ? 'width' : 'height' ] = measure + 'px';
	};

	/**
	 * emit eventComplete on a collection of items events
	 * @param {String} eventName
	 * @param {Array} items - Outlayer.Items
	 */
	proto._emitCompleteOnItems = function( eventName, items ) {
		var _this = this;
		function onComplete() {
			_this.dispatchEvent( eventName + 'Complete', null, [ items ] );
		}

		var count = items.length;
		if ( !items || !count ) {
			onComplete();
			return;
		}

		var doneCount = 0;
		function tick() {
			doneCount++;
			if ( doneCount == count ) {
				onComplete();
			}
		}

		// bind callback
		items.forEach( function( item ) {
			item.once( eventName, tick );
		});
	};

	/**
	 * emits events via EvEmitter and jQuery events
	 * @param {String} type - name of event
	 * @param {Event} event - original event
	 * @param {Array} args - extra arguments
	 */
	proto.dispatchEvent = function( type, event, args ) {
		// add original event to arguments
		var emitArgs = event ? [ event ].concat( args ) : args;
		this.emitEvent( type, emitArgs );

		if ( jQuery ) {
			// set this.$element
			this.$element = this.$element || jQuery( this.element );
			if ( event ) {
				// create jQuery event
				var $event = jQuery.Event( event );
				$event.type = type;
				this.$element.trigger( $event, args );
			} else {
				// just trigger with type if no event available
				this.$element.trigger( type, args );
			}
		}
	};

// -------------------------- ignore & stamps -------------------------- //


	/**
	 * keep item in collection, but do not lay it out
	 * ignored items do not get skipped in layout
	 * @param {Element} elem
	 */
	proto.ignore = function( elem ) {
		var item = this.getItem( elem );
		if ( item ) {
			item.isIgnored = true;
		}
	};

	/**
	 * return item to layout collection
	 * @param {Element} elem
	 */
	proto.unignore = function( elem ) {
		var item = this.getItem( elem );
		if ( item ) {
			delete item.isIgnored;
		}
	};

	/**
	 * adds elements to stamps
	 * @param {NodeList, Array, Element, or String} elems
	 */
	proto.stamp = function( elems ) {
		elems = this._find( elems );
		if ( !elems ) {
			return;
		}

		this.stamps = this.stamps.concat( elems );
		// ignore
		elems.forEach( this.ignore, this );
	};

	/**
	 * removes elements to stamps
	 * @param {NodeList, Array, or Element} elems
	 */
	proto.unstamp = function( elems ) {
		elems = this._find( elems );
		if ( !elems ){
			return;
		}

		elems.forEach( function( elem ) {
			// filter out removed stamp elements
			utils.removeFrom( this.stamps, elem );
			this.unignore( elem );
		}, this );
	};

	/**
	 * finds child elements
	 * @param {NodeList, Array, Element, or String} elems
	 * @returns {Array} elems
	 */
	proto._find = function( elems ) {
		if ( !elems ) {
			return;
		}
		// if string, use argument as selector string
		if ( typeof elems == 'string' ) {
			elems = this.element.querySelectorAll( elems );
		}
		elems = utils.makeArray( elems );
		return elems;
	};

	proto._manageStamps = function() {
		if ( !this.stamps || !this.stamps.length ) {
			return;
		}

		this._getBoundingRect();

		this.stamps.forEach( this._manageStamp, this );
	};

// update boundingLeft / Top
	proto._getBoundingRect = function() {
		// get bounding rect for container element
		var boundingRect = this.element.getBoundingClientRect();
		var size = this.size;
		this._boundingRect = {
			left: boundingRect.left + size.paddingLeft + size.borderLeftWidth,
			top: boundingRect.top + size.paddingTop + size.borderTopWidth,
			right: boundingRect.right - ( size.paddingRight + size.borderRightWidth ),
			bottom: boundingRect.bottom - ( size.paddingBottom + size.borderBottomWidth )
		};
	};

	/**
	 * @param {Element} stamp
	 **/
	proto._manageStamp = noop;

	/**
	 * get x/y position of element relative to container element
	 * @param {Element} elem
	 * @returns {Object} offset - has left, top, right, bottom
	 */
	proto._getElementOffset = function( elem ) {
		var boundingRect = elem.getBoundingClientRect();
		var thisRect = this._boundingRect;
		var size = getSize( elem );
		var offset = {
			left: boundingRect.left - thisRect.left - size.marginLeft,
			top: boundingRect.top - thisRect.top - size.marginTop,
			right: thisRect.right - boundingRect.right - size.marginRight,
			bottom: thisRect.bottom - boundingRect.bottom - size.marginBottom
		};
		return offset;
	};

// -------------------------- resize -------------------------- //

// enable event handlers for listeners
// i.e. resize -> onresize
	proto.handleEvent = utils.handleEvent;

	/**
	 * Bind layout to window resizing
	 */
	proto.bindResize = function() {
		window.addEventListener( 'resize', this );
		this.isResizeBound = true;
	};

	/**
	 * Unbind layout to window resizing
	 */
	proto.unbindResize = function() {
		window.removeEventListener( 'resize', this );
		this.isResizeBound = false;
	};

	proto.onresize = function() {
		this.resize();
	};

	utils.debounceMethod( Outlayer, 'onresize', 100 );

	proto.resize = function() {
		// don't trigger if size did not change
		// or if resize was unbound. See #9
		if ( !this.isResizeBound || !this.needsResizeLayout() ) {
			return;
		}

		this.layout();
	};

	/**
	 * check if layout is needed post layout
	 * @returns Boolean
	 */
	proto.needsResizeLayout = function() {
		var size = getSize( this.element );
		// check that this.size and size are there
		// IE8 triggers resize on body size change, so they might not be
		var hasSizes = this.size && size;
		return hasSizes && size.innerWidth !== this.size.innerWidth;
	};

// -------------------------- methods -------------------------- //

	/**
	 * add items to Outlayer instance
	 * @param {Array or NodeList or Element} elems
	 * @returns {Array} items - Outlayer.Items
	 **/
	proto.addItems = function( elems ) {
		var items = this._itemize( elems );
		// add items to collection
		if ( items.length ) {
			this.items = this.items.concat( items );
		}
		return items;
	};

	/**
	 * Layout newly-appended item elements
	 * @param {Array or NodeList or Element} elems
	 */
	proto.appended = function( elems ) {
		var items = this.addItems( elems );
		if ( !items.length ) {
			return;
		}
		// layout and reveal just the new items
		this.layoutItems( items, true );
		this.reveal( items );
	};

	/**
	 * Layout prepended elements
	 * @param {Array or NodeList or Element} elems
	 */
	proto.prepended = function( elems ) {
		var items = this._itemize( elems );
		if ( !items.length ) {
			return;
		}
		// add items to beginning of collection
		var previousItems = this.items.slice(0);
		this.items = items.concat( previousItems );
		// start new layout
		this._resetLayout();
		this._manageStamps();
		// layout new stuff without transition
		this.layoutItems( items, true );
		this.reveal( items );
		// layout previous items
		this.layoutItems( previousItems );
	};

	/**
	 * reveal a collection of items
	 * @param {Array of Outlayer.Items} items
	 */
	proto.reveal = function( items ) {
		this._emitCompleteOnItems( 'reveal', items );
		if ( !items || !items.length ) {
			return;
		}
		var stagger = this.updateStagger();
		items.forEach( function( item, i ) {
			item.stagger( i * stagger );
			item.reveal();
		});
	};

	/**
	 * hide a collection of items
	 * @param {Array of Outlayer.Items} items
	 */
	proto.hide = function( items ) {
		this._emitCompleteOnItems( 'hide', items );
		if ( !items || !items.length ) {
			return;
		}
		var stagger = this.updateStagger();
		items.forEach( function( item, i ) {
			item.stagger( i * stagger );
			item.hide();
		});
	};

	/**
	 * reveal item elements
	 * @param {Array}, {Element}, {NodeList} items
	 */
	proto.revealItemElements = function( elems ) {
		var items = this.getItems( elems );
		this.reveal( items );
	};

	/**
	 * hide item elements
	 * @param {Array}, {Element}, {NodeList} items
	 */
	proto.hideItemElements = function( elems ) {
		var items = this.getItems( elems );
		this.hide( items );
	};

	/**
	 * get Outlayer.Item, given an Element
	 * @param {Element} elem
	 * @param {Function} callback
	 * @returns {Outlayer.Item} item
	 */
	proto.getItem = function( elem ) {
		// loop through items to get the one that matches
		for ( var i=0; i < this.items.length; i++ ) {
			var item = this.items[i];
			if ( item.element == elem ) {
				// return item
				return item;
			}
		}
	};

	/**
	 * get collection of Outlayer.Items, given Elements
	 * @param {Array} elems
	 * @returns {Array} items - Outlayer.Items
	 */
	proto.getItems = function( elems ) {
		elems = utils.makeArray( elems );
		var items = [];
		elems.forEach( function( elem ) {
			var item = this.getItem( elem );
			if ( item ) {
				items.push( item );
			}
		}, this );

		return items;
	};

	/**
	 * remove element(s) from instance and DOM
	 * @param {Array or NodeList or Element} elems
	 */
	proto.remove = function( elems ) {
		var removeItems = this.getItems( elems );

		this._emitCompleteOnItems( 'remove', removeItems );

		// bail if no items to remove
		if ( !removeItems || !removeItems.length ) {
			return;
		}

		removeItems.forEach( function( item ) {
			item.remove();
			// remove item from collection
			utils.removeFrom( this.items, item );
		}, this );
	};

// ----- destroy ----- //

// remove and disable Outlayer instance
	proto.destroy = function() {
		// clean up dynamic styles
		var style = this.element.style;
		style.height = '';
		style.position = '';
		style.width = '';
		// destroy items
		this.items.forEach( function( item ) {
			item.destroy();
		});

		this.unbindResize();

		var id = this.element.outlayerGUID;
		delete instances[ id ]; // remove reference to instance by id
		delete this.element.outlayerGUID;
		// remove data for jQuery
		if ( jQuery ) {
			jQuery.removeData( this.element, this.constructor.namespace );
		}

	};

// -------------------------- data -------------------------- //

	/**
	 * get Outlayer instance from element
	 * @param {Element} elem
	 * @returns {Outlayer}
	 */
	Outlayer.data = function( elem ) {
		elem = utils.getQueryElement( elem );
		var id = elem && elem.outlayerGUID;
		return id && instances[ id ];
	};


// -------------------------- create Outlayer class -------------------------- //

	/**
	 * create a layout class
	 * @param {String} namespace
	 */
	Outlayer.create = function( namespace, options ) {
		// sub-class Outlayer
		var Layout = subclass( Outlayer );
		// apply new options and compatOptions
		Layout.defaults = utils.extend( {}, Outlayer.defaults );
		utils.extend( Layout.defaults, options );
		Layout.compatOptions = utils.extend( {}, Outlayer.compatOptions  );

		Layout.namespace = namespace;

		Layout.data = Outlayer.data;

		// sub-class Item
		Layout.Item = subclass( Item );

		// -------------------------- declarative -------------------------- //

		utils.htmlInit( Layout, namespace );

		// -------------------------- jQuery bridge -------------------------- //

		// make into jQuery plugin
		if ( jQuery && jQuery.bridget ) {
			jQuery.bridget( namespace, Layout );
		}

		return Layout;
	};

	function subclass( Parent ) {
		function SubClass() {
			Parent.apply( this, arguments );
		}

		SubClass.prototype = Object.create( Parent.prototype );
		SubClass.prototype.constructor = SubClass;

		return SubClass;
	}

// ----- helpers ----- //

// how many milliseconds are in each unit
	var msUnits = {
		ms: 1,
		s: 1000
	};

// munge time-like parameter into millisecond number
// '0.4s' -> 40
	function getMilliseconds( time ) {
		if ( typeof time == 'number' ) {
			return time;
		}
		var matches = time.match( /(^\d*\.?\d*)(\w*)/ );
		var num = matches && matches[1];
		var unit = matches && matches[2];
		if ( !num.length ) {
			return 0;
		}
		num = parseFloat( num );
		var mult = msUnits[ unit ] || 1;
		return num * mult;
	}

// ----- fin ----- //

// back in global
	Outlayer.Item = Item;

	return Outlayer;

}));

/**
 * Isotope Item
 **/

( function( window, factory ) {
	// universal module definition
	/* jshint strict: false */ /*globals define, module, require */
	if ( typeof define == 'function' && define.amd ) {
		// AMD
		define( 'isotope/js/item',[
				'outlayer/outlayer'
			],
			factory );
	} else if ( typeof module == 'object' && module.exports ) {
		// CommonJS
		module.exports = factory(
			require('outlayer')
		);
	} else {
		// browser global
		window.Isotope = window.Isotope || {};
		window.Isotope.Item = factory(
			window.Outlayer
		);
	}

}( window, function factory( Outlayer ) {
	'use strict';

// -------------------------- Item -------------------------- //

// sub-class Outlayer Item
	function Item() {
		Outlayer.Item.apply( this, arguments );
	}

	var proto = Item.prototype = Object.create( Outlayer.Item.prototype );

	var _create = proto._create;
	proto._create = function() {
		// assign id, used for original-order sorting
		this.id = this.layout.itemGUID++;
		_create.call( this );
		this.sortData = {};
	};

	proto.updateSortData = function() {
		if ( this.isIgnored ) {
			return;
		}
		// default sorters
		this.sortData.id = this.id;
		// for backward compatibility
		this.sortData['original-order'] = this.id;
		this.sortData.random = Math.random();
		// go thru getSortData obj and apply the sorters
		var getSortData = this.layout.options.getSortData;
		var sorters = this.layout._sorters;
		for ( var key in getSortData ) {
			var sorter = sorters[ key ];
			this.sortData[ key ] = sorter( this.element, this );
		}
	};

	var _destroy = proto.destroy;
	proto.destroy = function() {
		// call super
		_destroy.apply( this, arguments );
		// reset display, #741
		this.css({
			display: ''
		});
	};

	return Item;

}));

/**
 * Isotope LayoutMode
 */

( function( window, factory ) {
	// universal module definition
	/* jshint strict: false */ /*globals define, module, require */
	if ( typeof define == 'function' && define.amd ) {
		// AMD
		define( 'isotope/js/layout-mode',[
				'get-size/get-size',
				'outlayer/outlayer'
			],
			factory );
	} else if ( typeof module == 'object' && module.exports ) {
		// CommonJS
		module.exports = factory(
			require('get-size'),
			require('outlayer')
		);
	} else {
		// browser global
		window.Isotope = window.Isotope || {};
		window.Isotope.LayoutMode = factory(
			window.getSize,
			window.Outlayer
		);
	}

}( window, function factory( getSize, Outlayer ) {
	'use strict';

	// layout mode class
	function LayoutMode( isotope ) {
		this.isotope = isotope;
		// link properties
		if ( isotope ) {
			this.options = isotope.options[ this.namespace ];
			this.element = isotope.element;
			this.items = isotope.filteredItems;
			this.size = isotope.size;
		}
	}

	var proto = LayoutMode.prototype;

	/**
	 * some methods should just defer to default Outlayer method
	 * and reference the Isotope instance as `this`
	 **/
	var facadeMethods = [
		'_resetLayout',
		'_getItemLayoutPosition',
		'_manageStamp',
		'_getContainerSize',
		'_getElementOffset',
		'needsResizeLayout',
		'_getOption'
	];

	facadeMethods.forEach( function( methodName ) {
		proto[ methodName ] = function() {
			return Outlayer.prototype[ methodName ].apply( this.isotope, arguments );
		};
	});

	// -----  ----- //

	// for horizontal layout modes, check vertical size
	proto.needsVerticalResizeLayout = function() {
		// don't trigger if size did not change
		var size = getSize( this.isotope.element );
		// check that this.size and size are there
		// IE8 triggers resize on body size change, so they might not be
		var hasSizes = this.isotope.size && size;
		return hasSizes && size.innerHeight != this.isotope.size.innerHeight;
	};

	// ----- measurements ----- //

	proto._getMeasurement = function() {
		this.isotope._getMeasurement.apply( this, arguments );
	};

	proto.getColumnWidth = function() {
		this.getSegmentSize( 'column', 'Width' );
	};

	proto.getRowHeight = function() {
		this.getSegmentSize( 'row', 'Height' );
	};

	/**
	 * get columnWidth or rowHeight
	 * segment: 'column' or 'row'
	 * size 'Width' or 'Height'
	 **/
	proto.getSegmentSize = function( segment, size ) {
		var segmentName = segment + size;
		var outerSize = 'outer' + size;
		// columnWidth / outerWidth // rowHeight / outerHeight
		this._getMeasurement( segmentName, outerSize );
		// got rowHeight or columnWidth, we can chill
		if ( this[ segmentName ] ) {
			return;
		}
		// fall back to item of first element
		var firstItemSize = this.getFirstItemSize();
		this[ segmentName ] = firstItemSize && firstItemSize[ outerSize ] ||
			// or size of container
			this.isotope.size[ 'inner' + size ];
	};

	proto.getFirstItemSize = function() {
		var firstItem = this.isotope.filteredItems[0];
		return firstItem && firstItem.element && getSize( firstItem.element );
	};

	// ----- methods that should reference isotope ----- //

	proto.layout = function() {
		this.isotope.layout.apply( this.isotope, arguments );
	};

	proto.getSize = function() {
		this.isotope.getSize();
		this.size = this.isotope.size;
	};

	// -------------------------- create -------------------------- //

	LayoutMode.modes = {};

	LayoutMode.create = function( namespace, options ) {

		function Mode() {
			LayoutMode.apply( this, arguments );
		}

		Mode.prototype = Object.create( proto );
		Mode.prototype.constructor = Mode;

		// default options
		if ( options ) {
			Mode.options = options;
		}

		Mode.prototype.namespace = namespace;
		// register in Isotope
		LayoutMode.modes[ namespace ] = Mode;

		return Mode;
	};

	return LayoutMode;

}));

/*!
 * Masonry v4.1.0
 * Cascading grid layout library
 * http://masonry.desandro.com
 * MIT License
 * by David DeSandro
 */

( function( window, factory ) {
	// universal module definition
	/* jshint strict: false */ /*globals define, module, require */
	if ( typeof define == 'function' && define.amd ) {
		// AMD
		define( 'masonry/masonry',[
				'outlayer/outlayer',
				'get-size/get-size'
			],
			factory );
	} else if ( typeof module == 'object' && module.exports ) {
		// CommonJS
		module.exports = factory(
			require('outlayer'),
			require('get-size')
		);
	} else {
		// browser global
		window.Masonry = factory(
			window.Outlayer,
			window.getSize
		);
	}

}( window, function factory( Outlayer, getSize ) {



// -------------------------- masonryDefinition -------------------------- //

	// create an Outlayer layout class
	var Masonry = Outlayer.create('masonry');
	// isFitWidth -> fitWidth
	Masonry.compatOptions.fitWidth = 'isFitWidth';

	Masonry.prototype._resetLayout = function() {
		this.getSize();
		this._getMeasurement( 'columnWidth', 'outerWidth' );
		this._getMeasurement( 'gutter', 'outerWidth' );
		this.measureColumns();

		// reset column Y
		this.colYs = [];
		for ( var i=0; i < this.cols; i++ ) {
			this.colYs.push( 0 );
		}

		this.maxY = 0;
	};

	Masonry.prototype.measureColumns = function() {
		this.getContainerWidth();
		// if columnWidth is 0, default to outerWidth of first item
		if ( !this.columnWidth ) {
			var firstItem = this.items[0];
			var firstItemElem = firstItem && firstItem.element;
			// columnWidth fall back to item of first element
			this.columnWidth = firstItemElem && getSize( firstItemElem ).outerWidth ||
				// if first elem has no width, default to size of container
				this.containerWidth;
		}

		var columnWidth = this.columnWidth += this.gutter;

		// calculate columns
		var containerWidth = this.containerWidth + this.gutter;
		var cols = containerWidth / columnWidth;
		// fix rounding errors, typically with gutters
		var excess = columnWidth - containerWidth % columnWidth;
		// if overshoot is less than a pixel, round up, otherwise floor it
		var mathMethod = excess && excess < 1 ? 'round' : 'floor';
		cols = Math[ mathMethod ]( cols );
		this.cols = Math.max( cols, 1 );
	};

	Masonry.prototype.getContainerWidth = function() {
		// container is parent if fit width
		var isFitWidth = this._getOption('fitWidth');
		var container = isFitWidth ? this.element.parentNode : this.element;
		// check that this.size and size are there
		// IE8 triggers resize on body size change, so they might not be
		var size = getSize( container );
		this.containerWidth = size && size.innerWidth;
	};

	Masonry.prototype._getItemLayoutPosition = function( item ) {
		item.getSize();
		// how many columns does this brick span
		var remainder = item.size.outerWidth % this.columnWidth;
		var mathMethod = remainder && remainder < 1 ? 'round' : 'ceil';
		// round if off by 1 pixel, otherwise use ceil
		var colSpan = Math[ mathMethod ]( item.size.outerWidth / this.columnWidth );
		colSpan = Math.min( colSpan, this.cols );

		var colGroup = this._getColGroup( colSpan );
		// get the minimum Y value from the columns
		var minimumY = Math.min.apply( Math, colGroup );
		var shortColIndex = colGroup.indexOf( minimumY );

		// position the brick
		var position = {
			x: this.columnWidth * shortColIndex,
			y: minimumY
		};

		// apply setHeight to necessary columns
		var setHeight = minimumY + item.size.outerHeight;
		var setSpan = this.cols + 1 - colGroup.length;
		for ( var i = 0; i < setSpan; i++ ) {
			this.colYs[ shortColIndex + i ] = setHeight;
		}

		return position;
	};

	/**
	 * @param {Number} colSpan - number of columns the element spans
	 * @returns {Array} colGroup
	 */
	Masonry.prototype._getColGroup = function( colSpan ) {
		if ( colSpan < 2 ) {
			// if brick spans only one column, use all the column Ys
			return this.colYs;
		}

		var colGroup = [];
		// how many different places could this brick fit horizontally
		var groupCount = this.cols + 1 - colSpan;
		// for each group potential horizontal position
		for ( var i = 0; i < groupCount; i++ ) {
			// make an array of colY values for that one group
			var groupColYs = this.colYs.slice( i, i + colSpan );
			// and get the max value of the array
			colGroup[i] = Math.max.apply( Math, groupColYs );
		}
		return colGroup;
	};

	Masonry.prototype._manageStamp = function( stamp ) {
		var stampSize = getSize( stamp );
		var offset = this._getElementOffset( stamp );
		// get the columns that this stamp affects
		var isOriginLeft = this._getOption('originLeft');
		var firstX = isOriginLeft ? offset.left : offset.right;
		var lastX = firstX + stampSize.outerWidth;
		var firstCol = Math.floor( firstX / this.columnWidth );
		firstCol = Math.max( 0, firstCol );
		var lastCol = Math.floor( lastX / this.columnWidth );
		// lastCol should not go over if multiple of columnWidth #425
		lastCol -= lastX % this.columnWidth ? 0 : 1;
		lastCol = Math.min( this.cols - 1, lastCol );
		// set colYs to bottom of the stamp

		var isOriginTop = this._getOption('originTop');
		var stampMaxY = ( isOriginTop ? offset.top : offset.bottom ) +
			stampSize.outerHeight;
		for ( var i = firstCol; i <= lastCol; i++ ) {
			this.colYs[i] = Math.max( stampMaxY, this.colYs[i] );
		}
	};

	Masonry.prototype._getContainerSize = function() {
		this.maxY = Math.max.apply( Math, this.colYs );
		var size = {
			height: this.maxY
		};

		if ( this._getOption('fitWidth') ) {
			size.width = this._getContainerFitWidth();
		}

		return size;
	};

	Masonry.prototype._getContainerFitWidth = function() {
		var unusedCols = 0;
		// count unused columns
		var i = this.cols;
		while ( --i ) {
			if ( this.colYs[i] !== 0 ) {
				break;
			}
			unusedCols++;
		}
		// fit container to columns that have been used
		return ( this.cols - unusedCols ) * this.columnWidth - this.gutter;
	};

	Masonry.prototype.needsResizeLayout = function() {
		var previousWidth = this.containerWidth;
		this.getContainerWidth();
		return previousWidth != this.containerWidth;
	};

	return Masonry;

}));

/*!
 * Masonry layout mode
 * sub-classes Masonry
 * http://masonry.desandro.com
 */

( function( window, factory ) {
	// universal module definition
	/* jshint strict: false */ /*globals define, module, require */
	if ( typeof define == 'function' && define.amd ) {
		// AMD
		define( 'isotope/js/layout-modes/masonry',[
				'../layout-mode',
				'masonry/masonry'
			],
			factory );
	} else if ( typeof module == 'object' && module.exports ) {
		// CommonJS
		module.exports = factory(
			require('../layout-mode'),
			require('masonry-layout')
		);
	} else {
		// browser global
		factory(
			window.Isotope.LayoutMode,
			window.Masonry
		);
	}

}( window, function factory( LayoutMode, Masonry ) {
	'use strict';

// -------------------------- masonryDefinition -------------------------- //

	// create an Outlayer layout class
	var MasonryMode = LayoutMode.create('masonry');

	var proto = MasonryMode.prototype;

	var keepModeMethods = {
		_getElementOffset: true,
		layout: true,
		_getMeasurement: true
	};

	// inherit Masonry prototype
	for ( var method in Masonry.prototype ) {
		// do not inherit mode methods
		if ( !keepModeMethods[ method ] ) {
			proto[ method ] = Masonry.prototype[ method ];
		}
	}

	var measureColumns = proto.measureColumns;
	proto.measureColumns = function() {
		// set items, used if measuring first item
		this.items = this.isotope.filteredItems;
		measureColumns.call( this );
	};

	// point to mode options for fitWidth
	var _getOption = proto._getOption;
	proto._getOption = function( option ) {
		if ( option == 'fitWidth' ) {
			return this.options.isFitWidth !== undefined ?
				this.options.isFitWidth : this.options.fitWidth;
		}
		return _getOption.apply( this.isotope, arguments );
	};

	return MasonryMode;

}));

/**
 * fitRows layout mode
 */

( function( window, factory ) {
	// universal module definition
	/* jshint strict: false */ /*globals define, module, require */
	if ( typeof define == 'function' && define.amd ) {
		// AMD
		define( 'isotope/js/layout-modes/fit-rows',[
				'../layout-mode'
			],
			factory );
	} else if ( typeof exports == 'object' ) {
		// CommonJS
		module.exports = factory(
			require('../layout-mode')
		);
	} else {
		// browser global
		factory(
			window.Isotope.LayoutMode
		);
	}

}( window, function factory( LayoutMode ) {
	'use strict';

	var FitRows = LayoutMode.create('fitRows');

	var proto = FitRows.prototype;

	proto._resetLayout = function() {
		this.x = 0;
		this.y = 0;
		this.maxY = 0;
		this._getMeasurement( 'gutter', 'outerWidth' );
	};

	proto._getItemLayoutPosition = function( item ) {
		item.getSize();

		var itemWidth = item.size.outerWidth + this.gutter;
		// if this element cannot fit in the current row
		var containerWidth = this.isotope.size.innerWidth + this.gutter;
		if ( this.x !== 0 && itemWidth + this.x > containerWidth ) {
			this.x = 0;
			this.y = this.maxY;
		}

		var position = {
			x: this.x,
			y: this.y
		};

		this.maxY = Math.max( this.maxY, this.y + item.size.outerHeight );
		this.x += itemWidth;

		return position;
	};

	proto._getContainerSize = function() {
		return { height: this.maxY };
	};

	return FitRows;

}));

/**
 * vertical layout mode
 */

( function( window, factory ) {
	// universal module definition
	/* jshint strict: false */ /*globals define, module, require */
	if ( typeof define == 'function' && define.amd ) {
		// AMD
		define( 'isotope/js/layout-modes/vertical',[
				'../layout-mode'
			],
			factory );
	} else if ( typeof module == 'object' && module.exports ) {
		// CommonJS
		module.exports = factory(
			require('../layout-mode')
		);
	} else {
		// browser global
		factory(
			window.Isotope.LayoutMode
		);
	}

}( window, function factory( LayoutMode ) {
	'use strict';

	var Vertical = LayoutMode.create( 'vertical', {
		horizontalAlignment: 0
	});

	var proto = Vertical.prototype;

	proto._resetLayout = function() {
		this.y = 0;
	};

	proto._getItemLayoutPosition = function( item ) {
		item.getSize();
		var x = ( this.isotope.size.innerWidth - item.size.outerWidth ) *
			this.options.horizontalAlignment;
		var y = this.y;
		this.y += item.size.outerHeight;
		return { x: x, y: y };
	};

	proto._getContainerSize = function() {
		return { height: this.y };
	};

	return Vertical;

}));

/*!
 * Isotope v3.0.1
 *
 * Licensed GPLv3 for open source use
 * or Isotope Commercial License for commercial use
 *
 * http://isotope.metafizzy.co
 * Copyright 2016 Metafizzy
 */

( function( window, factory ) {
	// universal module definition
	/* jshint strict: false */ /*globals define, module, require */
	if ( typeof define == 'function' && define.amd ) {
		// AMD
		define( [
				'outlayer/outlayer',
				'get-size/get-size',
				'desandro-matches-selector/matches-selector',
				'fizzy-ui-utils/utils',
				'isotope/js/item',
				'isotope/js/layout-mode',
				// include default layout modes
				'isotope/js/layout-modes/masonry',
				'isotope/js/layout-modes/fit-rows',
				'isotope/js/layout-modes/vertical'
			],
			function( Outlayer, getSize, matchesSelector, utils, Item, LayoutMode ) {
				return factory( window, Outlayer, getSize, matchesSelector, utils, Item, LayoutMode );
			});
	} else if ( typeof module == 'object' && module.exports ) {
		// CommonJS
		module.exports = factory(
			window,
			require('outlayer'),
			require('get-size'),
			require('desandro-matches-selector'),
			require('fizzy-ui-utils'),
			require('isotope/js/item'),
			require('isotope/js/layout-mode'),
			// include default layout modes
			require('isotope/js/layout-modes/masonry'),
			require('isotope/js/layout-modes/fit-rows'),
			require('isotope/js/layout-modes/vertical')
		);
	} else {
		// browser global
		window.Isotope = factory(
			window,
			window.Outlayer,
			window.getSize,
			window.matchesSelector,
			window.fizzyUIUtils,
			window.Isotope.Item,
			window.Isotope.LayoutMode
		);
	}

}( window, function factory( window, Outlayer, getSize, matchesSelector, utils,
							 Item, LayoutMode ) {



// -------------------------- vars -------------------------- //

	var jQuery = window.jQuery;

// -------------------------- helpers -------------------------- //

	var trim = String.prototype.trim ?
		function( str ) {
			return str.trim();
		} :
		function( str ) {
			return str.replace( /^\s+|\s+$/g, '' );
		};

// -------------------------- isotopeDefinition -------------------------- //

	// create an Outlayer layout class
	var Isotope = Outlayer.create( 'isotope', {
		layoutMode: 'masonry',
		isJQueryFiltering: true,
		sortAscending: true
	});

	Isotope.Item = Item;
	Isotope.LayoutMode = LayoutMode;

	var proto = Isotope.prototype;

	proto._create = function() {
		this.itemGUID = 0;
		// functions that sort items
		this._sorters = {};
		this._getSorters();
		// call super
		Outlayer.prototype._create.call( this );

		// create layout modes
		this.modes = {};
		// start filteredItems with all items
		this.filteredItems = this.items;
		// keep of track of sortBys
		this.sortHistory = [ 'original-order' ];
		// create from registered layout modes
		for ( var name in LayoutMode.modes ) {
			this._initLayoutMode( name );
		}
	};

	proto.reloadItems = function() {
		// reset item ID counter
		this.itemGUID = 0;
		// call super
		Outlayer.prototype.reloadItems.call( this );
	};

	proto._itemize = function() {
		var items = Outlayer.prototype._itemize.apply( this, arguments );
		// assign ID for original-order
		for ( var i=0; i < items.length; i++ ) {
			var item = items[i];
			item.id = this.itemGUID++;
		}
		this._updateItemsSortData( items );
		return items;
	};


	// -------------------------- layout -------------------------- //

	proto._initLayoutMode = function( name ) {
		var Mode = LayoutMode.modes[ name ];
		// set mode options
		// HACK extend initial options, back-fill in default options
		var initialOpts = this.options[ name ] || {};
		this.options[ name ] = Mode.options ?
			utils.extend( Mode.options, initialOpts ) : initialOpts;
		// init layout mode instance
		this.modes[ name ] = new Mode( this );
	};


	proto.layout = function() {
		// if first time doing layout, do all magic
		if ( !this._isLayoutInited && this._getOption('initLayout') ) {
			this.arrange();
			return;
		}
		this._layout();
	};

	// private method to be used in layout() & magic()
	proto._layout = function() {
		// don't animate first layout
		var isInstant = this._getIsInstant();
		// layout flow
		this._resetLayout();
		this._manageStamps();
		this.layoutItems( this.filteredItems, isInstant );

		// flag for initalized
		this._isLayoutInited = true;
	};

	// filter + sort + layout
	proto.arrange = function( opts ) {
		// set any options pass
		this.option( opts );
		this._getIsInstant();
		// filter, sort, and layout

		// filter
		var filtered = this._filter( this.items );
		this.filteredItems = filtered.matches;

		this._bindArrangeComplete();

		if ( this._isInstant ) {
			this._noTransition( this._hideReveal, [ filtered ] );
		} else {
			this._hideReveal( filtered );
		}

		this._sort();
		this._layout();
	};
	// alias to _init for main plugin method
	proto._init = proto.arrange;

	proto._hideReveal = function( filtered ) {
		this.reveal( filtered.needReveal );
		this.hide( filtered.needHide );
	};

	// HACK
	// Don't animate/transition first layout
	// Or don't animate/transition other layouts
	proto._getIsInstant = function() {
		var isLayoutInstant = this._getOption('layoutInstant');
		var isInstant = isLayoutInstant !== undefined ? isLayoutInstant :
			!this._isLayoutInited;
		this._isInstant = isInstant;
		return isInstant;
	};

	// listen for layoutComplete, hideComplete and revealComplete
	// to trigger arrangeComplete
	proto._bindArrangeComplete = function() {
		// listen for 3 events to trigger arrangeComplete
		var isLayoutComplete, isHideComplete, isRevealComplete;
		var _this = this;
		function arrangeParallelCallback() {
			if ( isLayoutComplete && isHideComplete && isRevealComplete ) {
				_this.dispatchEvent( 'arrangeComplete', null, [ _this.filteredItems ] );
			}
		}
		this.once( 'layoutComplete', function() {
			isLayoutComplete = true;
			arrangeParallelCallback();
		});
		this.once( 'hideComplete', function() {
			isHideComplete = true;
			arrangeParallelCallback();
		});
		this.once( 'revealComplete', function() {
			isRevealComplete = true;
			arrangeParallelCallback();
		});
	};

	// -------------------------- filter -------------------------- //

	proto._filter = function( items ) {
		var filter = this.options.filter;
		filter = filter || '*';
		var matches = [];
		var hiddenMatched = [];
		var visibleUnmatched = [];

		var test = this._getFilterTest( filter );

		// test each item
		for ( var i=0; i < items.length; i++ ) {
			var item = items[i];
			if ( item.isIgnored ) {
				continue;
			}
			// add item to either matched or unmatched group
			var isMatched = test( item );
			// item.isFilterMatched = isMatched;
			// add to matches if its a match
			if ( isMatched ) {
				matches.push( item );
			}
			// add to additional group if item needs to be hidden or revealed
			if ( isMatched && item.isHidden ) {
				hiddenMatched.push( item );
			} else if ( !isMatched && !item.isHidden ) {
				visibleUnmatched.push( item );
			}
		}

		// return collections of items to be manipulated
		return {
			matches: matches,
			needReveal: hiddenMatched,
			needHide: visibleUnmatched
		};
	};

	// get a jQuery, function, or a matchesSelector test given the filter
	proto._getFilterTest = function( filter ) {
		if ( jQuery && this.options.isJQueryFiltering ) {
			// use jQuery
			return function( item ) {
				return jQuery( item.element ).is( filter );
			};
		}
		if ( typeof filter == 'function' ) {
			// use filter as function
			return function( item ) {
				return filter( item.element );
			};
		}
		// default, use filter as selector string
		return function( item ) {
			return matchesSelector( item.element, filter );
		};
	};

	// -------------------------- sorting -------------------------- //

	/**
	 * @params {Array} elems
	 * @public
	 */
	proto.updateSortData = function( elems ) {
		// get items
		var items;
		if ( elems ) {
			elems = utils.makeArray( elems );
			items = this.getItems( elems );
		} else {
			// update all items if no elems provided
			items = this.items;
		}

		this._getSorters();
		this._updateItemsSortData( items );
	};

	proto._getSorters = function() {
		var getSortData = this.options.getSortData;
		for ( var key in getSortData ) {
			var sorter = getSortData[ key ];
			this._sorters[ key ] = mungeSorter( sorter );
		}
	};

	/**
	 * @params {Array} items - of Isotope.Items
	 * @private
	 */
	proto._updateItemsSortData = function( items ) {
		// do not update if no items
		var len = items && items.length;

		for ( var i=0; len && i < len; i++ ) {
			var item = items[i];
			item.updateSortData();
		}
	};

	// ----- munge sorter ----- //

	// encapsulate this, as we just need mungeSorter
	// other functions in here are just for munging
	var mungeSorter = ( function() {
		// add a magic layer to sorters for convienent shorthands
		// `.foo-bar` will use the text of .foo-bar querySelector
		// `[foo-bar]` will use attribute
		// you can also add parser
		// `.foo-bar parseInt` will parse that as a number
		function mungeSorter( sorter ) {
			// if not a string, return function or whatever it is
			if ( typeof sorter != 'string' ) {
				return sorter;
			}
			// parse the sorter string
			var args = trim( sorter ).split(' ');
			var query = args[0];
			// check if query looks like [an-attribute]
			var attrMatch = query.match( /^\[(.+)\]$/ );
			var attr = attrMatch && attrMatch[1];
			var getValue = getValueGetter( attr, query );
			// use second argument as a parser
			var parser = Isotope.sortDataParsers[ args[1] ];
			// parse the value, if there was a parser
			sorter = parser ? function( elem ) {
					return elem && parser( getValue( elem ) );
				} :
				// otherwise just return value
				function( elem ) {
					return elem && getValue( elem );
				};

			return sorter;
		}

		// get an attribute getter, or get text of the querySelector
		function getValueGetter( attr, query ) {
			// if query looks like [foo-bar], get attribute
			if ( attr ) {
				return function getAttribute( elem ) {
					return elem.getAttribute( attr );
				};
			}

			// otherwise, assume its a querySelector, and get its text
			return function getChildText( elem ) {
				var child = elem.querySelector( query );
				return child && child.textContent;
			};
		}

		return mungeSorter;
	})();

	// parsers used in getSortData shortcut strings
	Isotope.sortDataParsers = {
		'parseInt': function( val ) {
			return parseInt( val, 10 );
		},
		'parseFloat': function( val ) {
			return parseFloat( val );
		}
	};

	// ----- sort method ----- //

	// sort filteredItem order
	proto._sort = function() {
		var sortByOpt = this.options.sortBy;
		if ( !sortByOpt ) {
			return;
		}
		// concat all sortBy and sortHistory
		var sortBys = [].concat.apply( sortByOpt, this.sortHistory );
		// sort magic
		var itemSorter = getItemSorter( sortBys, this.options.sortAscending );
		this.filteredItems.sort( itemSorter );
		// keep track of sortBy History
		if ( sortByOpt != this.sortHistory[0] ) {
			// add to front, oldest goes in last
			this.sortHistory.unshift( sortByOpt );
		}
	};

	// returns a function used for sorting
	function getItemSorter( sortBys, sortAsc ) {
		return function sorter( itemA, itemB ) {
			// cycle through all sortKeys
			for ( var i = 0; i < sortBys.length; i++ ) {
				var sortBy = sortBys[i];
				var a = itemA.sortData[ sortBy ];
				var b = itemB.sortData[ sortBy ];
				if ( a > b || a < b ) {
					// if sortAsc is an object, use the value given the sortBy key
					var isAscending = sortAsc[ sortBy ] !== undefined ? sortAsc[ sortBy ] : sortAsc;
					var direction = isAscending ? 1 : -1;
					return ( a > b ? 1 : -1 ) * direction;
				}
			}
			return 0;
		};
	}

	// -------------------------- methods -------------------------- //

	// get layout mode
	proto._mode = function() {
		var layoutMode = this.options.layoutMode;
		var mode = this.modes[ layoutMode ];
		if ( !mode ) {
			// TODO console.error
			throw new Error( 'No layout mode: ' + layoutMode );
		}
		// HACK sync mode's options
		// any options set after init for layout mode need to be synced
		mode.options = this.options[ layoutMode ];
		return mode;
	};

	proto._resetLayout = function() {
		// trigger original reset layout
		Outlayer.prototype._resetLayout.call( this );
		this._mode()._resetLayout();
	};

	proto._getItemLayoutPosition = function( item  ) {
		return this._mode()._getItemLayoutPosition( item );
	};

	proto._manageStamp = function( stamp ) {
		this._mode()._manageStamp( stamp );
	};

	proto._getContainerSize = function() {
		return this._mode()._getContainerSize();
	};

	proto.needsResizeLayout = function() {
		return this._mode().needsResizeLayout();
	};

	// -------------------------- adding & removing -------------------------- //

	// HEADS UP overwrites default Outlayer appended
	proto.appended = function( elems ) {
		var items = this.addItems( elems );
		if ( !items.length ) {
			return;
		}
		// filter, layout, reveal new items
		var filteredItems = this._filterRevealAdded( items );
		// add to filteredItems
		this.filteredItems = this.filteredItems.concat( filteredItems );
	};

	// HEADS UP overwrites default Outlayer prepended
	proto.prepended = function( elems ) {
		var items = this._itemize( elems );
		if ( !items.length ) {
			return;
		}
		// start new layout
		this._resetLayout();
		this._manageStamps();
		// filter, layout, reveal new items
		var filteredItems = this._filterRevealAdded( items );
		// layout previous items
		this.layoutItems( this.filteredItems );
		// add to items and filteredItems
		this.filteredItems = filteredItems.concat( this.filteredItems );
		this.items = items.concat( this.items );
	};

	proto._filterRevealAdded = function( items ) {
		var filtered = this._filter( items );
		this.hide( filtered.needHide );
		// reveal all new items
		this.reveal( filtered.matches );
		// layout new items, no transition
		this.layoutItems( filtered.matches, true );
		return filtered.matches;
	};

	/**
	 * Filter, sort, and layout newly-appended item elements
	 * @param {Array or NodeList or Element} elems
	 */
	proto.insert = function( elems ) {
		var items = this.addItems( elems );
		if ( !items.length ) {
			return;
		}
		// append item elements
		var i, item;
		var len = items.length;
		for ( i=0; i < len; i++ ) {
			item = items[i];
			this.element.appendChild( item.element );
		}
		// filter new stuff
		var filteredInsertItems = this._filter( items ).matches;
		// set flag
		for ( i=0; i < len; i++ ) {
			items[i].isLayoutInstant = true;
		}
		this.arrange();
		// reset flag
		for ( i=0; i < len; i++ ) {
			delete items[i].isLayoutInstant;
		}
		this.reveal( filteredInsertItems );
	};

	var _remove = proto.remove;
	proto.remove = function( elems ) {
		elems = utils.makeArray( elems );
		var removeItems = this.getItems( elems );
		// do regular thing
		_remove.call( this, elems );
		// bail if no items to remove
		var len = removeItems && removeItems.length;
		// remove elems from filteredItems
		for ( var i=0; len && i < len; i++ ) {
			var item = removeItems[i];
			// remove item from collection
			utils.removeFrom( this.filteredItems, item );
		}
	};

	proto.shuffle = function() {
		// update random sortData
		for ( var i=0; i < this.items.length; i++ ) {
			var item = this.items[i];
			item.sortData.random = Math.random();
		}
		this.options.sortBy = 'random';
		this._sort();
		this._layout();
	};

	/**
	 * trigger fn without transition
	 * kind of hacky to have this in the first place
	 * @param {Function} fn
	 * @param {Array} args
	 * @returns ret
	 * @private
	 */
	proto._noTransition = function( fn, args ) {
		// save transitionDuration before disabling
		var transitionDuration = this.options.transitionDuration;
		// disable transition
		this.options.transitionDuration = 0;
		// do it
		var returnValue = fn.apply( this, args );
		// re-enable transition for reveal
		this.options.transitionDuration = transitionDuration;
		return returnValue;
	};

	// ----- helper methods ----- //

	/**
	 * getter method for getting filtered item elements
	 * @returns {Array} elems - collection of item elements
	 */
	proto.getFilteredItemElements = function() {
		return this.filteredItems.map( function( item ) {
			return item.element;
		});
	};

	// -----  ----- //

	return Isotope;

}));

