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MATCHES\n// Support für IE 9+, Edge und Android bis Version 4.4.4\n// -------------------------------------------------------------------------------------------------\n\n(function() {\n    if (!Element.prototype.matches) {\n        var matches = function(selector) {\n          return (this.matchesSelector || this.msMatchesSelector || this.webkitMatchesSelector).call(this, selector);\n        };\n\n        Element.prototype.matches = matches;\n    }\n})();\n\n\n// SVG4EVERYBODY\n// SVG-Support für alle IE-Versionen\n// -------------------------------------------------------------------------------------------------\n\n(function(document, window) {\n    /* jshint nocomma: false */\n\n    function embed(svg, g) {\n        if (g) {\n            var viewBox  = !svg.getAttribute('viewBox') && g.getAttribute('viewBox'),\n                fragment = document.createDocumentFragment(), clone = g.cloneNode(!0);\n\n            for (viewBox && svg.setAttribute('viewBox', viewBox); clone.childNodes.length;) {\n                fragment.appendChild(clone.firstChild);\n            }\n\n            svg.appendChild(fragment);\n        }\n    }\n\n    function loadreadystatechange(xhr) {\n        xhr.onreadystatechange = function() {\n            if (xhr.readyState === 4) {\n                var x = document.createElement('x');\n\n                x.innerHTML = xhr.responseText, xhr.s.splice(0).map(function(array) {\n                    embed(array[0], x.querySelector('#' + array[1].replace(/(\\W)/g, '\\\\$1')));\n                });\n            }\n        }, xhr.onreadystatechange();\n    }\n\n    function svg4everybody() {\n        var $uses                 = document.getElementsByTagName('use'),\n            polyfill              = /\\bFirefox\\b|\\bEdge\\b|\\bTrident\\/[567]\\b|\\bVersion\\/7.0 Safari\\b/.test(navigator.userAgent) || (navigator.userAgent.match(/AppleWebKit\\/(\\d+)/) || [])[1] < 537,\n            requestAnimationFrame = window.requestAnimationFrame 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(_is_array($nodes) ? $nodes : [$nodes]) : [];\n    }\n\n    function _get_filtered_nodes($nodes, selector) {\n        var $filtered_nodes = [];\n\n        for (var i = 0, len = $nodes.length; $nodes !== null && (i < len); i++) {\n            if ($nodes[i].nodeType === 1) {\n                if (typeof selector === 'undefined') {\n                    $filtered_nodes.push($nodes[i]);\n                }\n                else if($nodes[i].tagName.toLowerCase() === selector) {\n                    $filtered_nodes.push($nodes[i]);\n                }\n            }\n        }\n\n        return $filtered_nodes;\n    }\n\n    function _create_element(html) {\n        var $div = document.createElement('div');\n\n        $div.innerHTML = html.trim(); // textContent/nodeValue funktionieren hier nicht,\n                                      // Bug bei Popups: http://stackoverflow.com/a/25896886\n\n        return _get_filtered_nodes($div.childNodes);\n    }\n\n    function _get_scroll_offset($node) {\n        var top,\n            left;\n\n        if (_is_window($node)) {\n            if (window.pageXOffset !== null) {\n                top  = window.pageYOffset;\n                left = window.pageXOffset;\n            }\n        }\n        else {\n            top  = $node.scrollTop;\n            left = $node.scrollLeft;\n        }\n\n        return {\n            top  : top,\n            left : left\n        };\n    }\n\n    function _get_vendor_property(property) {\n        var css_prefixes = ['Moz', 'ms', 'Webkit'],\n            $div         = document.createElement('div');\n\n        if (property in $div) {\n            return property;\n        }\n\n        var cap_name  = property.charAt(0).toUpperCase() + property.slice(1),\n            orig_name = property;\n\n        for (var i = css_prefixes.length; i > 0; i--) {\n            property = css_prefixes[i] + cap_name;\n\n            if (property in $div.style) {\n                return property;\n            }\n        }\n\n        return orig_name;\n    }\n\n    function _camel_case_property(property) {\n        return property.replace(/-([\\da-z])/gi, function(all, letter) {\n            return letter.toUpperCase();\n        });\n    }\n\n    function _get_prefixed_event(type, $types) {\n        var $div      = document.createElement('div').style,\n            $prefixes = ['', 'Moz', 'ms', 'Webkit'],\n            prefix;\n\n        for (var i = 0, len = $prefixes.length; i < len; i++) {\n            prefix = $prefixes[i] + type.charAt(0).toUpperCase() + type.substr(1, type.length - 4);\n\n            if (prefix in $div) {\n                return $types[prefix];\n            }\n        }\n\n        return type;\n    }\n\n    function _get_event_type_wheel(type) {\n        return type === 'wheel' ? 'onwheel' in document || document.documentMode >= 9 ? 'wheel' : 'mousewheel' : type;\n    }\n\n    function _get_event_type_animatedend(type) {\n        return _get_prefixed_event(type, {\n            'animation'       : 'animationend',\n            'MozAnimation'    : 'animationend',\n            'WebkitAnimation' : 'webkitAnimationEnd',\n            'msAnimation'     : 'MSAnimationEnd'\n        });\n    }\n\n    function _get_event_type_transitionend(type) {\n        return _get_prefixed_event(type, {\n            'transition'       : 'transitionend',\n            'MozTransition'    : 'transitionend',\n            'WebkitTransition' : 'webkitTransitionEnd',\n            'msTransition'     : 'MSTransitionEnd'\n        });\n    }\n\n    function _get_event_type(type) {\n        type = _get_event_type_animatedend(type) || _get_event_type_transitionend(type);\n        type = _get_event_type_wheel(type);\n\n        return type;\n    }\n\n    // Erstellt Helpers Object\n\n    $$ = function(selector, context) {\n        context = context || document;\n        return new $helpers(selector, context);\n    };\n\n    $helpers = function(selector, context) {\n        var _this  = this,\n            $nodes = [];\n\n        if (selector) {\n            if (typeof selector === 'string') {\n                selector = selector.trim();\n\n                if (/<[a-z][\\s\\S]*>/i.test(selector)) {\n                    $nodes = _create_element(selector);\n                }\n                else {\n                    $nodes = _query(selector, context);\n                }\n            }\n            else if (_is_array(selector)) {\n                $nodes = selector;\n            }\n            else {\n                $nodes = [selector];\n            }\n        }\n\n        for (var i = 0, len = $nodes.length; i < len; i++) {\n            _this[i] = $nodes[i];\n        }\n\n        _this.length = $nodes.length;\n\n        return _this;\n    };\n\n    // Helpers API\n\n    $helpers.prototype = {\n        is_helper: true,\n\n        find: function(selector) {\n            var $this  = this,\n                $nodes = [],\n                context;\n\n            if ($this.length !== 0) {\n                if ($this.length === 1) {\n                    $nodes = _query(selector, $this[0]);\n                }\n                else {\n                    for (var i = 0, len = $this.length; i < len; i++) {\n                        $nodes = $nodes.concat(\n                            _query(selector, $this[i])\n                        );\n                    }\n\n                    $nodes = $nodes.reduce(function(a, b) {\n                        if (a.indexOf(b) < 0) {\n                            a.push(b);\n                        }\n\n                        return a;\n                    }, []);\n                }\n            }\n\n            return $$($nodes, context);\n        },\n\n        children: function(selector) {\n            var $this                 = this,\n                $filtered_child_nodes = [],\n                $child_node;\n\n            for (var i = 0, len = $this.length; i < len; i++) {\n                $child_node = this[i].firstChild;\n\n                while ($child_node) {\n                    if ($child_node.nodeType === 1 && $child_node.matches(selector)) {\n                        $filtered_child_nodes.push($child_node);\n                    }\n\n                    $child_node = $child_node.nextSibling;\n                }\n            }\n\n            return $$($filtered_child_nodes);\n        },\n\n        get_parent: function(selector) {\n            var $this = this,\n                maybe_class,\n                name_only,\n                tag_name,\n                class_name,\n                $obj;\n\n            if ($this.length === 1) {\n                $obj = $this[0];\n\n                if (typeof selector !== 'undefined') {\n                    maybe_class = selector[0] === '.';\n                    name_only   = maybe_class ? selector.slice(1) : selector;\n                    tag_name    = name_only.toUpperCase();\n                }\n\n                do {\n                    $obj       = $obj.parentNode;\n                    class_name = (' ' + $obj.className + ' ').replace(/[\\t\\r\\n\\f]/g, ' ');\n\n                    if ((typeof selector === 'undefined' && $obj.nodeType === 1) ||\n                        (maybe_class && class_name.indexOf(' ' + name_only + ' ') > -1) ||\n                        $obj.tagName === tag_name) {\n\n                        return $$($obj);\n                    }\n                }\n                while ($obj && $obj.nodeType !== 9);\n            }\n        },\n\n        append: function($obj) {\n            var $this = this;\n\n            if (typeof $obj === 'string') {\n                $obj = _create_element($obj);\n            }\n\n            for (var i = 0, len = $this.length; i < len; i++) {\n                for (var j = 0, obj_len = $obj.length; j < obj_len; j++) {\n                    $this[i].appendChild($obj[j]);\n                }\n            }\n        },\n\n        prepend: function($obj) {\n            var $this = this;\n\n            if (typeof $obj === 'string') {\n                $obj = _create_element($obj);\n            }\n\n            for (var i = 0, len = $this.length; i < len; i++) {\n                for (var j = 0, obj_len = $obj.length; j < obj_len; j++) {\n                    $this[i].insertBefore($obj[j], $this[i].childNodes[0]);\n                }\n            }\n        },\n\n        before: function($obj) {\n            var $this = this;\n\n            if (typeof $obj === 'string') {\n                $obj = _create_element($obj);\n            }\n\n            for (var i = 0, len = $this.length; i < len; i++) {\n                for (var j = 0, obj_len = $obj.length; j < obj_len; j++) {\n                    $this[i].parentNode.insertBefore($obj[j], $this[i]);\n                }\n            }\n        },\n\n        after: function($obj) {\n            var $this = this;\n\n            if (typeof $obj === 'string') {\n                $obj = _create_element($obj);\n            }\n\n            for (var i = 0, len = $this.length; i < len; i++) {\n                for (var j = 0, obj_len = $obj.length; j < obj_len; j++) {\n                    $this[i].parentNode.insertBefore($obj[j], $this[i].nextSibling);\n                }\n            }\n        },\n\n        remove: function() {\n            var $this = this;\n\n            for (var i = 0, len = $this.length; i < len; i++) {\n                $this[i].parentNode.removeChild($this[i]);\n            }\n        },\n\n        remove_children: function() {\n            var $this = this;\n\n            for (var i = 0, len = $this.length; i < len; i++) {\n                while ($this[i].firstChild) {\n                    $this[i].removeChild($this[i].firstChild);\n                }\n            }\n        },\n\n        empty: function() {\n            var $this = this;\n\n            for (var i = 0, len = $this.length; i < len; i++) {\n                while ($this[i].firstChild) {\n                    $this[i].removeChild($this[i].firstChild);\n                }\n            }\n        },\n\n        clone: function() {\n            var $this  = this;\n\n            if ($this.length === 1) {\n                return $$($this[0].cloneNode(true));\n            }\n        },\n\n        next_sibling: function() {\n            var $this = this;\n\n            if ($this.length === 1) {\n                var $obj = $this[0];\n\n                do {\n                    $obj = $obj.nextSibling;\n                }\n                while ($obj && $obj.nodeType !== 1);\n\n                return $$($obj);\n            }\n        },\n\n        prev_sibling: function() {\n            var $this = this;\n\n            if ($this.length === 1) {\n                var $obj = $this[0];\n\n                do {\n                    $obj = $obj.previousSibling;\n                }\n                while ($obj && $obj.nodeType !== 1);\n\n                return $$($obj);\n            }\n        },\n\n        get_siblings: function() {\n            var $this     = this,\n                $siblings = [];\n\n            if ($this.length === 1) {\n                var $obj      = $this[0],\n                    $children = $obj.parentNode.children;\n\n                for (var i = 0, len = $children.length; i < len; i++) {\n                    if ($children[i].nodeType === 1 && $children[i] !== $obj) {\n                        $siblings.push($children[i]);\n                    }\n                }\n            }\n\n            return $$($siblings);\n        },\n\n        get_attribute: function(attribute) {\n            var $this = this,\n                value = null;\n\n            if ($this.length === 1) {\n                if (_is_input($this[0]) && attribute === 'value') {\n                    value = $this[0][attribute];\n                }\n                else {\n                    value = $this[0].getAttribute(attribute);\n                }\n            }\n\n            return value === null ? '' : value;\n        },\n\n        set_attribute: function(attribute, value) {\n            var $this = this;\n\n            for (var i = 0, len = $this.length; i < len; i++) {\n                if (_is_input($this[i]) && attribute === 'value') {\n                    $this[i][attribute] = value;\n                }\n                else if (value) {\n                    $this[i].setAttribute(attribute, value);\n                }\n                else {\n                    $this[i].removeAttribute(attribute);\n                }\n            }\n        },\n\n        set_text: function(text) {\n            var $this = this;\n\n            if ($this.length === 1) {\n                $this[0].textContent = text.toString().trim();\n            }\n        },\n\n        get_text: function() {\n            var $this = this,\n                text  = '';\n\n            if ($this.length === 1) {\n                text = $this[0].textContent.trim();\n            }\n\n            return text;\n        },\n\n        insert_html: function(html, outer) {\n            var $this = this;\n\n            if ($this.length === 1) {\n                if (outer === true) {\n                    $this[0].outerHTML = html;\n                }\n                else {\n                    $this[0].innerHTML = html;\n                }\n            }\n        },\n\n        get_html: function(outer) {\n            var $this = this,\n                html  = '';\n\n            if ($this.length === 1) {\n                if (outer === true) {\n                    html = $this[0].outerHTML;\n                }\n                else {\n                    html = $this[0].innerHTML;\n                }\n            }\n\n            return html.trim();\n        },\n\n        get_file: function() {\n            var $this    = this,\n                filename = '',\n                filetype = '',\n                filesize = 0,\n                $file;\n\n            if ($this.length === 1) {\n                $file = $this[0].files;\n\n                if ($file.length) {\n                    filename = $file[0].name;\n                    filesize = $file[0].size;\n                    filetype = $file[0].type;\n                }\n            }\n\n            return {\n                'filename' : filename,\n                'filesize' : filesize,\n                'filetype' : filetype\n            };\n        },\n\n        is_tag: function(tagname) {\n            var $this  = this,\n                is_tag = false;\n\n            if ($this.length === 1) {\n                is_tag = $this[0].tagName.toLowerCase() === tagname;\n            }\n\n            return is_tag;\n        },\n\n        is_visible: function() {\n            var $this      = this,\n                is_visible = false,\n                $styles,\n                $obj;\n\n            if ($this.length === 1) {\n                $obj       = $this[0];\n                is_visible = true;\n\n                while ($obj && $obj.nodeType !== 9) {\n                    $styles = window.getComputedStyle($obj, null);\n\n                    if ($obj.offsetWidth === 0 &&\n                        $obj.offsetHeight === 0 &&\n                        $styles.display === 'none') {\n\n                        is_visible = false;\n                        break;\n                    }\n\n                    $obj = $obj.parentElement;\n                }\n            }\n\n            return is_visible;\n        },\n\n        index: function(element) {\n            var $this = this;\n\n            if (typeof element === 'object') {\n                for (var i = 0, len = $this.length; i < len; i++) {\n                    if ($this[i] === element) {\n                        return i;\n                    }\n                }\n            }\n            else if (typeof element === 'number') {\n                if (element === -1) {\n                    element = $this.length - 1;\n                }\n\n                return $$($this[element]);\n            }\n        },\n\n        for_each: function(callback) {\n            var $this = this;\n\n            for (var i = 0, len = $this.length; i < len; i++) {\n                callback.call($this[i], i);\n            }\n        },\n\n        is_checked: function() {\n            var $this      = this,\n                is_checked = false;\n\n            if ($this.length === 1) {\n                is_checked = $this[0].checked;\n            }\n\n            return is_checked;\n        },\n\n        add_class: function(selector) {\n            var $this     = this,\n                $selector = selector.split(' '),\n                updated   = false,\n                trimmed_classes,\n                classes;\n\n            for (var i = 0, len = $this.length; i < len; i++) {\n                trimmed_classes = String.prototype.trim.call($this[i].getAttribute('class') || '');\n                classes         = trimmed_classes ? trimmed_classes.split(/\\s+/) : [];\n\n                for (var j = 0, selector_len = $selector.length; j < selector_len; j++) {\n                    if (classes.indexOf($selector[j]) === -1) {\n                        classes.push($selector[j]);\n                        updated = true;\n                    }\n                }\n\n                if (updated) {\n                    $this[i].setAttribute('class', classes.sort().join(' '));\n                    updated = false;\n                }\n            }\n        },\n\n        remove_class: function(selector) {\n            var $this     = this,\n                $selector = selector.split(' '),\n                updated   = false,\n                trimmed_classes,\n                classes,\n                index;\n\n            for (var i = 0, len = $this.length; i < len; i++) {\n                trimmed_classes = String.prototype.trim.call($this[i].getAttribute('class') || '');\n                classes         = trimmed_classes ? trimmed_classes.split(/\\s+/) : [];\n\n                for (var j = 0, selector_len = $selector.length; j < selector_len; j++) {\n                    index = classes.indexOf($selector[j]);\n\n                    if (index > -1) {\n                        classes.splice(index, 1);\n                        updated = true;\n                    }\n                }\n\n                if (updated) {\n                    if (classes.length) {\n                        $this[i].setAttribute('class', classes.sort().join(' '));\n                    }\n                    else {\n                        $this[i].removeAttribute('class');\n                    }\n                    updated = false;\n                }\n            }\n        },\n\n        has_class: function(selector) {\n            var $this     = this,\n                has_class = false;\n\n            if ($this.length === 1) {\n                has_class = $this[0].classList.contains(selector);\n            }\n\n            return has_class;\n        },\n\n        focus: function() {\n            var $this = this;\n\n            if ($this.length) {\n                $this[0].focus();\n            }\n        },\n\n        click: function() {\n            var $this = this;\n\n            if ($this.length) {\n                $this[0].click();\n            }\n        },\n\n        set_style: function($styles) {\n            var $this = this,\n                property_camel_case,\n                property_vendor;\n\n            for (var i = 0, len = $this.length; i < len; i++) {\n                for (var property in $styles) {\n                    if ($styles.hasOwnProperty(property)) {\n                        property_camel_case = _camel_case_property(property);\n                        property_vendor     = _get_vendor_property(property_camel_case);\n\n                        $this[i].style[property_vendor] = $styles[property];\n                    }\n                }\n            }\n        },\n\n        get_style: function(property) {\n            var $this = this,\n                style = '',\n                $styles;\n\n            if ($this.length === 1) {\n                $styles = window.getComputedStyle($this[0], null);\n                style   = $styles.getPropertyValue(property);\n            }\n\n            return style;\n        },\n\n        set_data: function(key, value) {\n            var $this = this;\n\n            if ($this.length === 1) {\n                $this[0][key] = value;\n            }\n        },\n\n        get_data: function(key) {\n            var $this = this;\n\n            if ($this.length === 1) {\n                return $this[0][key];\n            }\n        },\n\n        get_width: function() {\n            var $this = this,\n                width = 0;\n\n            if ($this.length === 1) {\n                if (_is_window($this[0])) {\n                    width = document.documentElement.clientWidth;\n                }\n                else if (_is_document($this[0])) {\n                    width = Math.max(\n                        document.body.scrollWidth,\n                        document.body.offsetWidth\n                    );\n                }\n                else {\n                    width = this[0].offsetWidth;\n                }\n            }\n\n            return width;\n        },\n\n        get_height: function() {\n            var $this  = this,\n                height = 0;\n\n            if ($this.length === 1) {\n                if (_is_window($this[0])) {\n                    height = document.documentElement.clientHeight;\n                }\n                else if (_is_document($this[0])) {\n                    height = Math.max(\n                        document.body.scrollHeight,\n                        document.body.offsetHeight\n                    );\n                }\n                else {\n                    height = this[0].offsetHeight;\n                }\n            }\n\n            return height;\n        },\n\n        get_offset_top: function() {\n            var $this = this,\n                top   = 0,\n                $obj;\n\n            if ($this.length === 1) {\n                $obj = $this[0];\n                top   = $obj.offsetTop;\n\n                while ($obj = $obj.offsetParent) {\n                    top += $obj.offsetTop;\n                }\n            }\n\n            return top;\n        },\n\n        get_offset_left: function() {\n            var $this = this,\n                left  = 0,\n                $obj;\n\n            if ($this.length === 1) {\n                $obj = $this[0];\n                left = $obj.offsetLeft;\n\n                while ($obj = $obj.offsetParent) {\n                    left += $obj.offsetLeft;\n                }\n            }\n\n            return left;\n        },\n\n        get_scroll_top: function() {\n            var $this      = this,\n                scroll_top = 0;\n\n            if ($this.length === 1) {\n                scroll_top = _get_scroll_offset($this[0]).top;\n            }\n\n            return scroll_top;\n        },\n\n        get_scroll_left: function() {\n            var $this       = this,\n                scroll_left = 0;\n\n            if ($this.length === 1) {\n                scroll_left = _get_scroll_offset($this[0]).left;\n            }\n\n            return scroll_left;\n        },\n\n        set_value: function(value) {\n            return this.set_attribute('value', value);\n        },\n\n        get_value: function() {\n            return this.get_attribute('value');\n        },\n\n        add_event: function(type, listener) {\n            var $this  = this,\n                $types = type.split(','),\n                event_listener;\n\n            event_listener = function(event) {\n                listener.call(this, event);\n            };\n\n            for (var i = 0, len = $this.length; i < len; i++) {\n                for (var j = 0, types_len = $types.length; j < types_len; j++) {\n                    type = _get_event_type($types[j].trim());\n\n                    $this[i].addEventListener(type, event_listener, false);\n                }\n            }\n        },\n    };\n\n    // Ladet JavaScript-Code nach\n\n    $$.load_script = function(url, callback) {\n        var $head   = document.getElementsByTagName('head')[0],\n            $script = document.createElement('script');\n\n        $script.src = (navigator.userAgent.indexOf('MSIE ') > 0) ? url + '?' + Math.random() : url;\n\n        if (callback && typeof(callback) === 'function') {\n            $script.onload = callback;\n        }\n\n        $head.appendChild($script);\n    };\n\n    // Ajax\n\n    $$.get = function(url, callback) {\n        if (window.XMLHttpRequest) {\n            var $ajax = new XMLHttpRequest();\n\n            $ajax.open('GET', url, true);\n\n            $ajax.onload = function() {\n                if (this.status === 200) {\n                    callback.call(this, this.responseText);\n                }\n            };\n\n            $ajax.send();\n        }\n    };\n\n    // Setzt hash\n\n    $$.set_hash = function(hash) {\n        if (window.history && window.history.replaceState) { // IE 10+\n            hash = hash || window.location.pathname;\n            window.history.replaceState(null, document.title, hash);\n        }\n    };\n\n    // Verbindet zwei Objekte\n\n    $$.merge_objects = function($obj1, $obj2) {\n        for (var key in $obj2) {\n            if ($obj2[key].constructor === Object) {\n                $obj2[key] = $$.merge_objects($obj1[key], $obj2[key]);\n            }\n            else {\n                $obj1[key] = $obj2[key];\n            }\n        }\n\n        return $obj1;\n    };\n\n    // Scrollt zu\n\n    $$.scroll_to = function(to, duration, callback) {\n        var diff = to - $$(window).get_scroll_top(),\n            step = diff / duration * 10;\n\n        setTimeout(function() {\n            window.scrollBy(0, step);\n\n            if (Math.abs(diff) <= Math.abs(step)) {\n\n                if (typeof callback === 'function') {\n                    callback();\n                }\n\n                return;\n            }\n\n            $$.scroll_to(to, duration - 10, callback);\n        }, 10);\n    };\n\n\n    // Gibt die Touch-Richtung zurück\n\n    $$.get_touch_range = function(dist_x, dist_y) {\n        var theta = Math.atan2(-dist_x, dist_y),\n            degrees;\n\n        if (theta < 0) {\n            theta += 2 * Math.PI;\n        }\n\n        degrees = Math.floor(theta * (180 / Math.PI) - 180);\n\n        if (degrees < 0 && degrees > -180) {\n            degrees = 360 - Math.abs(degrees);\n        }\n\n        return {\n            is_top    : degrees <= 40 || degrees >= 320,\n            is_right  : degrees >= 50 && degrees <= 130,\n            is_bottom : degrees >= 140 && degrees <= 220,\n            is_left   : degrees >= 230 && degrees <= 310\n        };\n    };\n\n    window.$$ = $$;\n}(document, window));\n\n// DEVICE\n// -------------------------------------------------------------------------------------------------\n\n(function(document, navigator, window) {\n    var $html = document.querySelector('html');\n\n    function _find(needle) {\n        return navigator.userAgent.toLowerCase().indexOf(needle) !== -1;\n    }\n\n    window.device = {};\n\n    device.iphone         = _find('iphone');\n    device.ipod           = _find('ipod');\n    device.ipad           = _find('ipad');\n    device.ios            = device.iphone || device.ipod || device.ipad;\n    device.android        = _find('android');\n    device.android_phone  = device.android && _find('mobile');\n    device.android_tablet = device.android && !_find('mobile');\n    device.windows        = _find('windows');\n    device.windows_phone  = device.windows && _find('phone');\n    device.windows_tablet = device.windows && _find('touch');\n    device.mobile         = device.android_phone || device.iphone || device.ipod || device.windows_phone;\n    device.tablet         = device.ipad || device.android_tablet || device.windows_tablet;\n\n    if (device.ios) {\n        if (device.ipad) {\n            $html.classList.add('ios', 'ipad', 'tablet');\n        }\n        else if (device.iphone || device.ipod) {\n            $html.classList.add('ios', 'iphone', 'mobile');\n        }\n    }\n    else if (device.android) {\n        if (device.android_tablet) {\n            $html.classList.add('android', 'tablet');\n        }\n        else {\n            $html.classList.add('android', 'mobile');\n        }\n    }\n    else if (device.windows) {\n        if (device.windows_tablet) {\n            $html.classList.add('windows', 'tablet');\n        }\n        else if (device.windows_phone) {\n            $html.classList.add('windows', 'mobile');\n        }\n        else {\n            $html.classList.add('desktop');\n        }\n    }\n    else {\n        $html.classList.add('desktop');\n    }\n}(document, navigator, window));\n\n// BROWSER SUPPORT\n// -------------------------------------------------------------------------------------------------\n\n(function(document, navigator, window) {\n    var $html  = document.querySelector('html'),\n        $div   = document.createElement('div');\n\n    // Überprüft die Browser-Unterstützung für CSS-Attribute wie z. B. transition\n\n    function _has_css_property(property) {\n        var css_property_found = false,\n            prefixes           = ['Moz', 'Webkit'];\n\n        if (property in $div.style) {\n            css_property_found = true;\n        }\n        else {\n            property = property.charAt(0).toUpperCase() + property.substr(1);\n\n            for (var i = 0, len = prefixes.length; i < len; i++) {\n                if (typeof $div.style[prefixes[i] + property] !== 'undefined') {\n                    css_property_found = true;\n                    break;\n                }\n            }\n        }\n\n        return css_property_found;\n    }\n\n    window.support = {\n        touch      : window.navigator.msMaxTouchPoints || 'ontouchstart' in document.documentElement,\n        transition : _has_css_property('transition') && 'TransitionEvent' in window   // TransitionEvent wird benötigt für Android 4.1.x (https://bugs.dojotoolkit.org/ticket/17164#comment:13)\n    };\n\n    // Setzt Klassen auf den HTML-Tag\n\n    $html.classList.remove('no_js');\n    $html.classList.add(support.touch ? 'touch' : 'no_touch');\n    $html.classList.add(support.transition ? 'csstransitions' : 'no_csstransitions');\n}(document, navigator, window));\n\n// PREFETCH\n// -------------------------------------------------------------------------------------------------\n\n(function(document) {\n    var Prefetch = function($prefetch_link) {\n        var _this = this;\n\n        _this._$prefetch_link = $prefetch_link;\n        _this._$options       = _this._$prefetch_link.getAttribute('data-performance');\n    };\n\n    Prefetch.prototype = {\n        init: function() {\n            var _this = this;\n\n            if (_this._$options.indexOf('prefetch') > -1) {\n                _this._prefetch();\n            }\n\n            if (_this._$options.indexOf('prerender') > -1) {\n                _this._prerender();\n            }\n        },\n\n        _prefetch: function() {\n            var _this = this,\n                $link = document.createElement('link');\n\n            $link.setAttribute('rel', 'prefetch');\n            $link.setAttribute('href', _this._$prefetch_link.getAttribute('href'));\n\n            document.querySelector('head').appendChild($link);\n        },\n\n        _prerender: function() {\n            var _this = this,\n                $link = document.createElement('link');\n\n            $link.setAttribute('rel', 'prerender');\n            $link.setAttribute('href', _this._$prefetch_link.getAttribute('href'));\n\n            document.querySelector('head').appendChild($link);\n        }\n    };\n\n    var $prefetch_links = document.querySelectorAll('[data-performance]');\n\n    for (var i = 0, len = $prefetch_links.length; i < len; i++) {\n        new Prefetch($prefetch_links[i]).init();\n    }\n})(document);\n\n// BARRIEREFREIHEIT\n// Wird gebraucht für alle Projekte\n\n// EXTERNER LINK\n// -------------------------------------------------------------------------------------------------\n\n(function(document) {\n    var $links = document.querySelectorAll('[href*=http]');\n\n    for (var i = 0, $link; $link = $links[i]; i++) {\n        var target = $link.getAttribute('target'),\n            title  = $link.getAttribute('title');\n\n        if (title && target === '_blank') {\n            $link.setAttribute('title', title + ' (Neues Fenster)');\n        }\n    }\n})(document);\n\n\n// TASTATURSTEUERUNG FÜR ELEMENTE MIT ROLE BUTTON\n// -------------------------------------------------------------------------------------------------\n\n(function(document) {\n    var $buttons = document.querySelectorAll('[role=\"button\"]');\n\n    for (var i = 0, $button; $button = $buttons[i]; i++) {\n         $button.addEventListener('keyup', function(event) {\n             if (event.keyCode === 13 && this.tagName !== 'A' || event.keyCode === 32) {\n                 this.click();\n             }\n         });\n     }\n})(document);\n\n\n// ERKENNUNG DER FOKUSMETHODE FÜR LINKS\n// Wird verwendet für verbesserten Fokus auf Links (siehe default.less)\n// -------------------------------------------------------------------------------------------------\n\n(function(document) {\n    var FocusMethod = function($link) {\n        var _this = this;\n\n        _this.$link = $link;\n\n        _this.focus_method      = false;\n        _this.last_focus_method = false;\n    };\n\n    FocusMethod.prototype = {\n        init: function() {\n            var _this = this;\n\n            _this.$link.addEventListener('keydown',\n                _this._on_key_down.bind(this), {\n                    'passive' : true\n                }\n            );\n\n            _this.$link.addEventListener('mousedown',\n                _this._on_mouse_down.bind(this), {\n                    'passive' : true\n                }\n            );\n\n            _this.$link.addEventListener('touchstart',\n                _this._on_touch_start.bind(this), {\n                    'passive' : true\n                }\n            );\n\n            _this.$link.addEventListener('focus', _this._on_focus.bind(this));\n            _this.$link.addEventListener('blur', _this._on_blur.bind(this));\n\n            window.addEventListener('blur', this._on_window_blur.bind(this));\n        },\n\n        _on_key_down: function() {\n            var _this = this;\n\n            _this.focus_method = 'key';\n        },\n\n        _on_mouse_down: function() {\n            var _this = this;\n\n            if (_this.focus_method === 'touch') {\n                return;\n            }\n\n            _this.focus_method = 'mouse';\n        },\n\n        _on_touch_start: function() {\n            var _this = this;\n\n            _this.focus_method = 'touch';\n        },\n\n        _on_focus: function() {\n            var _this = this;\n\n            if (!_this.focus_method) {\n                _this.focus_method = _this.last_focus_method;\n            }\n\n            _this.$link.setAttribute('data-focus-method', _this.focus_method);\n\n            this.last_focus_method = this.focus_method;\n            this.focus_method      = false;\n        },\n\n        _on_blur: function() {\n            var _this = this;\n\n            _this.$link.removeAttribute('data-focus-method');\n        },\n\n        _on_window_blur: function() {\n            var _this = this;\n\n            _this.focus_method = false;\n        }\n    };\n\n    var $links = document.querySelectorAll('a, [tabindex=\"0\"]');\n\n    for (var i = 0, $link; $link = $links[i]; i++) {\n        new FocusMethod($link).init();\n    }\n})(document);\n\n// COOKIE-HINWEIS\n// -------------------------------------------------------------------------------------------------\n\n(function(document) {\n    var $cookie_banner = document.querySelector('#cookie_banner'),\n        $body          = document.querySelector('body');\n\n    if (!$cookie_banner) {\n        return;\n    }\n\n    var $close  = $cookie_banner.querySelector('.close'),\n        now     = new Date().getTime(),\n        storage = localStorage.getItem(domain + '_cookie_banner');\n\n    if (storage === null || now > storage) {\n        $cookie_banner.classList.remove('hideme');\n        $body.classList.add('cb_visible');\n    }\n\n    $close.addEventListener('click', function(event) {\n        event.preventDefault();\n\n        localStorage.setItem(domain + '_cookie_banner', now + 31536000);\n        $cookie_banner.classList.add('hideme');\n        $body.classList.remove('cb_visible');\n    });\n}(document));\n\n// COOKIE-HINWEIS FUSSZEILE VERLÄNGERN\r\n// -------------------------------------------------------------------------------------------------\r\n\r\n(function(document) {\r\n    var $cookie_banner  = document.querySelector('#cookie_banner'),\r\n        $footer         = document.querySelector('footer'),\r\n        $close          = $cookie_banner.querySelector('.close'),\r\n        $cookie_spacing;\r\n\r\n    if (!$cookie_banner) {\r\n        return;\r\n    }\r\n\r\n    $close.addEventListener('click', function() {\r\n        if ($footer) {\r\n            $footer.removeChild($cookie_spacing);\r\n        }\r\n    });\r\n\r\n    if ($footer) {\r\n        $cookie_spacing = document.createElement('div');\r\n        $footer.appendChild($cookie_spacing);\r\n        $cookie_spacing.style.paddingBottom = $cookie_banner.clientHeight + 'px';\r\n        window.addEventListener('resize', function() {\r\n            $cookie_spacing.style.paddingBottom = $cookie_banner.clientHeight + 'px';\r\n        }, false);\r\n    }\r\n\r\n}(document));\r\n\n// SEO: KEYWORDS IN STEUERNEWS ARTIKEL HERVORHEBEN\n// -------------------------------------------------------------------------------------------------\n\n(function(document) {\n    var SeoHighlightKeywords = function($article) {\n        var _this = this;\n\n        _this.$article     = $article;\n        _this.current_url  = document.location.href;\n        _this.previous_url = document.referrer;\n    };\n\n    SeoHighlightKeywords.prototype = {\n        init: function() {\n            var _this = this;\n\n            if (_this.previous_url.indexOf('/thema/') > -1 &&\n                _this.current_url.indexOf('/thema/') === -1) {\n\n                var keyword = _this._get_keyword(),\n                    regex   = new RegExp('(?![^<]*>)' + '(' + keyword + ')', 'gi');\n\n                _this.$article.innerHTML = _this.$article.innerHTML.replace(regex , '<span class=\"highlight_keyword\">$1</span>');\n            }\n        },\n\n        _get_keyword: function() {\n            var _this    = this,\n                keywords = _this.previous_url.split('/thema/');\n\n            return decodeURIComponent(keywords[1]);\n        }\n    };\n\n    var $article = document.getElementById('highlight_keywords');\n\n    if ($article) { // has_seo raus, wenn SEO-Baustein\n        new SeoHighlightKeywords($article).init();\n    }\n})(document);\n\n// TOOLTIP\r\n// Wird gebraucht für: google_maps,newsletter_quick_subscribe, formular\r\n// -------------------------------------------------------------------------------------------------\r\n\r\n(function(document) {\r\n    var Tooltip = function($tooltip_wrapper) {\r\n        var _this = this;\r\n\r\n        _this.$tooltip_wrapper = $tooltip_wrapper;\r\n        _this.$tooltip         = $tooltip_wrapper.querySelector('[role=\"tooltip\"]');\r\n\r\n        _this._temp_disabled = false;\r\n        _this._perm_disabled = false;\r\n        _this._focused       = false;\r\n\r\n        var tooltip_id = _this.$tooltip.getAttribute('id');\r\n\r\n        _this.$tooltip_trigger = $tooltip_wrapper.querySelector('[aria-describedby=\"' + tooltip_id + '\"]');\r\n    };\r\n\r\n    Tooltip.prototype = {\r\n        init: function() {\r\n            var _this = this;\r\n\r\n            _this.$tooltip_trigger.addEventListener('keyup', _this._check_tooltip.bind(_this));\r\n            _this.$tooltip_trigger.addEventListener('focus', _this._check_tooltip.bind(_this));\r\n            _this.$tooltip_trigger.addEventListener('blur', _this._hide_tooltip.bind(_this));\r\n\r\n            if (!support.touch) {\r\n                _this.$tooltip.addEventListener('mouseenter', _this._check_tooltip.bind(_this));\r\n                _this.$tooltip.addEventListener('mouseleave', _this._hide_tooltip.bind(_this));\r\n                _this.$tooltip_trigger.addEventListener('mouseenter', _this._check_tooltip.bind(_this));\r\n                _this.$tooltip_trigger.addEventListener('mouseleave', _this._hide_tooltip.bind(_this));\r\n            }\r\n\r\n            _this._keyboard_nav();\r\n        },\r\n\r\n        _check_tooltip: function(event) {\r\n            var _this = this;\r\n\r\n            if (_this.$tooltip_trigger.getAttribute('aria-invalid') === 'true') {\r\n                _this._perm_disabled = false;\r\n                _this._show_tooltip(event);\r\n            }\r\n            else {\r\n                _this._perm_disabled = true;\r\n                _this._hide_tooltip(event);\r\n            }\r\n        },\r\n\r\n        _show_tooltip: function(event) {\r\n            var _this = this;\r\n\r\n            if (_this.disabled) {\r\n                return;\r\n            }\r\n\r\n            if (event.type === 'keyup' || event.type === 'focus') {\r\n                _this._focused = true;\r\n            }\r\n\r\n            if (!_this._temp_disabled && !_this._perm_disabled ||\r\n                event.type === 'mouseenter' && !_this._perm_disabled) {\r\n                _this.$tooltip.setAttribute('aria-hidden', 'false');\r\n            }\r\n        },\r\n\r\n        _hide_tooltip: function(event) {\r\n            var _this = this;\r\n\r\n            if (event.type === 'blur') {\r\n                _this._temp_disabled = false;\r\n                _this._focused = false;\r\n            }\r\n\r\n            if (!_this._focused || _this._perm_disabled || _this._temp_disabled) {\r\n                _this.$tooltip.setAttribute('aria-hidden', 'true');\r\n            }\r\n        },\r\n\r\n        _keyboard_nav: function() {\r\n            var _this = this;\r\n\r\n            _this.$tooltip_trigger.addEventListener('keydown', function(event) {\r\n                if (event.keyCode === 27 && _this.$tooltip.getAttribute('aria-hidden') === 'false') {\r\n                    event.stopPropagation();\r\n\r\n                    _this._temp_disabled = true;\r\n                    _this._hide_tooltip(event);\r\n                }\r\n            });\r\n        }\r\n    };\r\n\r\n    var $tooltip_wrappers = document.querySelectorAll('.tooltip_wrapper');\r\n\r\n    for (var i = 0, len = $tooltip_wrappers.length; i < len; i++) {\r\n        new Tooltip($tooltip_wrappers[i]).init();\r\n    }\r\n\r\n    window.Tooltip = Tooltip;\r\n})(document);\r\n\n// DROPDOWN MENU\n// -------------------------------------------------------------------------------------------------\n\n(function(document) {\n    var DropdownMenu = function($dropdown_menu) {\n        var _this = this,\n            id    = $dropdown_menu.getAttribute('id');\n\n        _this.$dropdown_menu                   = $dropdown_menu;\n        _this.$main_menuitems                  = $dropdown_menu.querySelectorAll('#' + id + ' > ul > li > a');\n        _this.$sub_menuitems                   = $dropdown_menu.querySelectorAll('#' + id + ' > ul > li li > a');\n        _this.$sub_menuitems_with_sub_sub_menu = $dropdown_menu.querySelectorAll('#' + id + ' > ul > li li > a.has_sub_sub_menu');\n        _this.$main_menuitems_with_sub_menu    = $dropdown_menu.querySelectorAll('[href^=\"#\"]');\n        _this.main_menu_index                  = 0;\n        _this.event_type                       = false;\n\n        _this.$key = {\n            'tab'         : 9,\n            'enter'       : 13,\n            'escape'      : 27,\n            'space'       : 32,\n            'arrow_left'  : 37,\n            'arrow_up'    : 38,\n            'arrow_right' : 39,\n            'arrow_down'  : 40\n        };\n    };\n\n    DropdownMenu.prototype = {\n        init: function() {\n            var _this = this;\n\n            _this._init_accessibility();\n            _this._init_keyboard();\n\n            for (var i = 0, $main_menuitem; $main_menuitem = _this.$main_menuitems[i]; i++) {\n                var $li = $main_menuitem.parentElement;\n\n                $li.addEventListener('mouseenter',\n                    _this._on_mouseenter_main_menuitem.bind(_this, $main_menuitem)\n                );\n\n                $li.addEventListener('mouseover',\n                    _this._on_mouseover_main_menuitem.bind(_this, $main_menuitem)\n                );\n\n                $li.addEventListener('mouseout',\n                    _this._on_mouseout_main_menuitem.bind(_this)\n                );\n\n                $main_menuitem.addEventListener('focus',\n                    _this._on_focus_main_menuitem.bind(_this, $main_menuitem)\n                );\n            }\n        },\n\n        _init_accessibility: function() {\n            var _this = this;\n\n            for (var i = 0, $main_menuitem; $main_menuitem = _this.$main_menuitems_with_sub_menu[i]; i++) {\n                $main_menuitem.setAttribute('aria-expanded', 'false');\n\n                $main_menuitem.addEventListener('click', function(event) {\n                    event.preventDefault();\n                });\n            }\n        },\n\n        _init_keyboard: function() {\n            var _this = this;\n\n            for (var i = 0, $main_menuitem; $main_menuitem = _this.$main_menuitems[i]; i++) {\n                $main_menuitem.addEventListener('keydown',\n                    _this._on_keydown_main_menuitem.bind(_this, $main_menuitem)\n                );\n            }\n\n            for (var j = 0, $sub_menuitem; $sub_menuitem = _this.$sub_menuitems[j]; j++) {\n                $sub_menuitem.addEventListener('keydown',\n                    _this._on_keydown_sub_menuitem.bind(_this, $sub_menuitem)\n                );\n            }\n        },\n\n        _on_keydown_main_menuitem: function($main_menuitem, event) {\n            var _this = this;\n\n            _this.event_type      = event.type;\n            _this.main_menu_index = _this._get_main_menuitem_index();\n            _this.$main_menuitem  = $main_menuitem;\n            _this.$sub_menu       = $main_menuitem.nextElementSibling;\n\n            switch(event.keyCode) {\n                case _this.$key.tab:\n                    if (event.shiftKey) {\n                        _this.main_menu_index -= 1;\n                    }\n                    else {\n                        _this.main_menu_index += 1;\n                    }\n\n                    break;\n\n                case _this.$key.enter:\n                    if (_this.$sub_menu) {\n                        event.preventDefault();\n                        _this._close_sub_menus();\n                        this._open_sub_menu(false);\n                    }\n\n                    break;\n\n                case _this.$key.escape:\n                    event.preventDefault();\n\n                    if (_this.sub_menu_is_open) {\n                        event.stopPropagation();\n                    }\n\n                    _this._close_sub_menu();\n\n                    break;\n\n                case _this.$key.arrow_left:\n                    event.preventDefault();\n\n                    _this._focus_prev_main_menuitem();\n\n                    break;\n\n                case _this.$key.arrow_up:\n                    event.preventDefault();\n\n                    if (_this.sub_menu_is_open) {\n                        _this._focus_prev_menuitem();\n                    }\n\n                    break;\n\n                case _this.$key.arrow_right:\n                    event.preventDefault();\n\n                    _this._focus_next_main_menuitem();\n\n                    break;\n\n                case _this.$key.arrow_down:\n                    event.preventDefault();\n\n                    if (_this.$sub_menu) {\n                        this._open_sub_menu(false);\n                    }\n                    else {\n                        _this._focus_next_main_menuitem();\n                    }\n\n                    break;\n            }\n        },\n\n        _get_main_menuitem_index: function() {\n            var _this = this;\n\n            return Array.prototype.indexOf.call(_this.$main_menuitems, document.activeElement);\n        },\n\n        _focus_prev_menuitem: function() {\n            var _this = this;\n\n            _this.main_menu_index -= 1;\n\n            if (_this.main_menu_index < 0) {\n                _this.main_menu_index = 0;\n\n                return;\n            }\n\n            _this.$main_menuitem = _this.$main_menuitems[_this.main_menu_index];\n            _this.$sub_menu      = _this.$main_menuitem.nextElementSibling;\n\n            if (_this.$sub_menu && _this.sub_menu_is_open) {\n                this._open_sub_menu(true);\n            }\n            else {\n                _this.$main_menuitem.focus();\n            }\n        },\n\n        _focus_prev_main_menuitem: function() {\n            var _this = this;\n\n            _this.main_menu_index -= 1;\n\n            if (_this.main_menu_index < 0) {\n                _this.main_menu_index = 0;\n\n                return;\n            }\n\n            _this.$main_menuitem = _this.$main_menuitems[_this.main_menu_index];\n\n            _this.$main_menuitem.focus();\n        },\n\n        _focus_next_main_menuitem: function() {\n            var _this = this;\n\n            _this.main_menu_index += 1;\n\n            if (_this.main_menu_index === _this.$main_menuitems.length) {\n                _this.main_menu_index = _this.$main_menuitems.length - 1;\n\n                return;\n            }\n\n            _this.$main_menuitem = _this.$main_menuitems[_this.main_menu_index];\n\n            _this.$main_menuitem.focus();\n        },\n\n        _on_mouseenter_main_menuitem: function($main_menuitem, event) {\n            var _this = this;\n\n            _this.event_type     = event.type;\n            _this.$main_menuitem = $main_menuitem;\n            _this.$sub_menu      = $main_menuitem.nextElementSibling;\n\n            _this._close_sub_menus();\n\n            if (_this.$sub_menu) {\n                _this._open_sub_menu(false);\n            }\n        },\n\n        _on_mouseover_main_menuitem: function() {\n            var _this = this;\n\n            clearTimeout(_this.close_sub_menu_timeout);\n        },\n\n        _on_mouseout_main_menuitem: function() {\n            var _this = this;\n\n            _this.close_sub_menu_timeout = setTimeout(function() {\n                _this._close_sub_menus();\n            }, 1000);\n        },\n\n        _on_focus_main_menuitem: function($main_menuitem, event) {\n            var _this = this;\n\n            _this.event_type = event.type;\n\n            if (_this.sub_menu_is_open) {\n                _this.$main_menuitem = $main_menuitem;\n                _this.$sub_menu      = $main_menuitem.nextElementSibling;\n\n                _this._close_sub_menus();\n\n                if (_this.$sub_menu) {\n                    _this._open_sub_menu();\n                }\n            }\n        },\n\n        _on_keydown_sub_menuitem: function($sub_menuitem, event) {\n            var _this = this;\n\n            switch(event.keyCode) {\n                case _this.$key.tab:\n\n                    if (event.shiftKey) {\n                        _this.sub_menu_index -= 1;\n                    }\n                    else {\n                        _this.sub_menu_index += 1;\n                    }\n\n                    break;\n\n                case _this.$key.escape:\n                    event.preventDefault();\n                    event.stopPropagation();\n\n                    _this._close_sub_menu();\n\n                    break;\n\n                case _this.$key.arrow_left:\n                    event.preventDefault();\n\n                    _this.sub_menu_index = 0;\n                    _this._focus_prev_sub_menuitem();\n\n                    break;\n\n                case _this.$key.arrow_up:\n                    event.preventDefault();\n\n                    _this._focus_prev_sub_menuitem();\n\n                    break;\n\n                case _this.$key.arrow_right:\n                    event.preventDefault();\n\n                    _this.sub_menu_index = 0;\n                    _this._focus_prev_sub_menuitem();\n\n                    break;\n\n                case _this.$key.arrow_down:\n                    event.preventDefault();\n\n                    _this._focus_next_sub_menuitem();\n\n                    break;\n            }\n\n            _this._open_sub_sub_menu();\n        },\n\n        _open_sub_sub_menu: function() {\n            var _this          = this;\n                $sub_menuitem  = _this.$main_menuitem.nextElementSibling.querySelectorAll('li li > a')[_this.sub_menu_index];\n\n            if($sub_menuitem) {\n\n                for (var i = 0, $menuitem; $menuitem = _this.$sub_menuitems[i]; i++) {\n                    var is_current_menuitem    = $sub_menuitem === $menuitem,\n                        $sub_sub_menu          = $sub_menuitem.parentNode.querySelector('ul');\n                        is_sub_sub_menuitem    = $sub_menuitem.classList.contains('sub_sub_menuitem');\n\n                    if (is_current_menuitem && $sub_sub_menu) {\n                        $menuitem.parentElement.classList.add('hover');\n                        $menuitem.setAttribute('aria-expanded', true);\n                    }\n\n                    else if (is_current_menuitem && is_sub_sub_menuitem) {\n                        $menuitem.parentElement.parentElement.parentElement.classList.add('hover');\n                        $menuitem.parentElement.parentElement.parentElement.setAttribute('aria-expanded', true);\n                    }\n\n                    else {\n                        $menuitem.parentElement.classList.remove('hover');\n                        $menuitem.setAttribute('aria-expanded', false);\n                    }\n                }\n            }\n\n            else {\n                _this._close_sub_sub_menus();\n            }\n        },\n\n        _close_sub_sub_menus: function() {\n            var _this = this;\n\n            for (var i = 0, $sub_menuitem; $sub_menuitem = _this.$sub_menuitems_with_sub_sub_menu[i]; i++) {\n                $sub_menuitem.parentElement.classList.remove('hover');\n                $sub_menuitem.setAttribute('aria-expanded', 'false');\n            }\n        },\n\n        _focus_prev_sub_menuitem: function() {\n            var _this          = this,\n                $sub_menuitems = _this.$main_menuitem.nextElementSibling.querySelectorAll('a'),\n                $sub_menuitem,\n                $main_menuitem;\n\n            _this.sub_menu_index -= 1;\n\n            $sub_menuitem = $sub_menuitems[_this.sub_menu_index];\n\n            if (_this.sub_menu_index < 0) {\n                $main_menuitem = _this.$main_menuitems[_this.main_menu_index];\n\n                if ($main_menuitem) {\n                    $main_menuitem.focus();\n                }\n            }\n            else if ($sub_menuitem) {\n                $sub_menuitem.focus();\n            }\n        },\n\n        _focus_next_sub_menuitem: function() {\n            var _this          = this,\n                $sub_menuitems = _this.$main_menuitem.nextElementSibling.querySelectorAll('a'),\n                $sub_menuitem,\n                $main_menuitem;\n\n            _this.sub_menu_index += 1;\n\n            $sub_menuitem = $sub_menuitems[_this.sub_menu_index];\n\n            if (_this.sub_menu_index === $sub_menuitems.length) {\n                _this.main_menu_index += 1;\n\n                $main_menuitem = _this.$main_menuitems[_this.main_menu_index];\n\n                if ($main_menuitem) {\n                    $main_menuitem.focus();\n                }\n                else {\n                    _this.main_menu_index -= 1;\n                    _this.sub_menu_index  -= 1;\n                }\n            }\n            else {\n                $sub_menuitem.focus();\n            }\n        },\n\n        _open_sub_menu: function(focus_last_sub_menuitem) {\n            var _this = this,\n                $sub_menuitems;\n\n            for (var i = 0, $main_menuitem; $main_menuitem = _this.$main_menuitems_with_sub_menu[i]; i++) {\n                var is_current_menuitem = _this.$main_menuitem === $main_menuitem;\n\n                if (is_current_menuitem) {\n                    $main_menuitem.parentElement.classList.add('hover');\n                }\n                else {\n                    $main_menuitem.parentElement.classList.remove('hover');\n                }\n\n                $main_menuitem.setAttribute('aria-expanded', is_current_menuitem);\n            }\n\n            _this.sub_menu_index = 0;\n\n            if (_this.event_type === 'keydown') {\n                $sub_menuitems = _this.$sub_menu.querySelectorAll('a');\n\n                if (focus_last_sub_menuitem) {\n                    _this.sub_menu_index = $sub_menuitems.length - 1;\n                }\n\n                $sub_menuitems[_this.sub_menu_index].focus();\n\n                _this.event_type = false;\n            }\n\n            _this.sub_menu_is_open = true;\n        },\n\n        _close_sub_menu: function() {\n            var _this = this;\n\n            _this.$main_menuitem.parentElement.classList.remove('hover');\n            _this.$main_menuitem.setAttribute('aria-expanded', 'false');\n\n            _this.sub_menu_is_open = false;\n\n            _this.$main_menuitem.focus();\n        },\n\n        _close_sub_menus: function() {\n            var _this = this;\n\n            for (var i = 0, $main_menuitem; $main_menuitem = _this.$main_menuitems_with_sub_menu[i]; i++) {\n                $main_menuitem.parentElement.classList.remove('hover');\n                $main_menuitem.setAttribute('aria-expanded', 'false');\n            }\n\n            _this._close_sub_sub_menus();\n        }\n    };\n\n    var $dropdown_menu = document.getElementsByClassName('dropdown_menu');\n\n    for (var i = 0, len = $dropdown_menu.length; i < len; i++) {\n        new DropdownMenu($dropdown_menu[i]).init();\n    }\n})(document);\n\n// OFFCANVAS MENU\n// -------------------------------------------------------------------------------------------------\n\n(function(document) {\n    var OffCanvasMenu = function($toggle_offcanvas_menu) {\n        var _this = this,\n            controls;\n\n        controls = $toggle_offcanvas_menu.querySelector('.open_offcanvas_menu').getAttribute('aria-controls');\n\n        _this.$offcanvas_menu               = document.getElementById(controls);\n        _this.$main_menuitems_with_sub_menu = _this.$offcanvas_menu.querySelectorAll('[href^=\"#\"]');\n        // _this.$offcanvas_menu_content       = _this.$offcanvas_menu.querySelector('.offcanvas_menu_content');\n        _this.$focus_elements               = _this.$offcanvas_menu.querySelectorAll('a');\n        _this.focus_element                 = false;\n        _this.$offcanvas_menu_state         = false;\n\n        _this.$key = {\n            'tab'    : 9,\n        };\n    };\n\n    OffCanvasMenu.prototype = {\n        init: function() {\n            var _this = this;\n\n            _this._init_accessibility();\n            _this._init_keyboard();\n\n            for (var j = 0, $main_menuitem_with_sub_menu; $main_menuitem_with_sub_menu = _this.$main_menuitems_with_sub_menu[j]; j++) {\n                $main_menuitem_with_sub_menu.addEventListener('click',\n                    _this._on_click_main_menuitem.bind(_this, $main_menuitem_with_sub_menu)\n                );\n            }\n        },\n\n        _init_accessibility: function() {\n            var _this = this;\n\n            for (var i = 0, $main_menuitem; $main_menuitem = _this.$main_menuitems_with_sub_menu[i]; i++) {\n                $main_menuitem.setAttribute('aria-expanded', $main_menuitem.classList.contains('active'));\n            }\n        },\n\n        _init_keyboard: function() {\n            var _this = this;\n\n            document.addEventListener('keydown', function(event) {\n                if (!_this.$offcanvas_menu_state.checked) {\n                    return;\n                }\n\n                if (event.keyCode === _this.$key.tab) {\n                    event.preventDefault();\n\n                    if (event.shiftKey) {\n                        _this._focus_element_with_shift_tab_key(event);\n                    }\n                    else {\n                        _this._focus_element_with_tab_key(event);\n                    }\n                }\n            });\n        },\n\n        _focus_element_with_shift_tab_key: function() {\n            var _this = this;\n\n            _this.tab_index -= 1;\n\n            if (_this.tab_index < 0) {\n                _this.tab_index = _this.$focus_elements.length - 1;\n            }\n\n            for (var i = _this.tab_index, $focus_element; $focus_element = _this.$focus_elements[i]; i--) {\n                if ($focus_element.offsetParent === null || $focus_element.offsetWidth === 0) {\n                    _this.tab_index -= 1;\n                    continue;\n                }\n\n                _this.$focus_elements[_this.tab_index].focus();\n                break;\n            }\n        },\n\n        _focus_element_with_tab_key: function() {\n            var _this = this;\n\n            if (_this.tab_index === _this.$focus_elements.length - 1) {\n                _this.tab_index = 0;\n            }\n            else {\n                _this.tab_index += 1;\n            }\n\n            for (var i = _this.tab_index, $focus_element; $focus_element = _this.$focus_elements[i]; i++) {\n                if ($focus_element.offsetParent === null || $focus_element.offsetWidth === 0) {\n                    _this.tab_index += 1;\n\n                    if (_this.tab_index > _this.$focus_elements.length - 1) {\n                        _this.tab_index = 0;\n                    }\n                    else {\n                        continue;\n                    }\n                }\n\n                _this.$focus_elements[_this.tab_index].focus();\n                break;\n            }\n        },\n\n        _on_click_main_menuitem: function($main_menuitem, event) {\n            var _this = this;\n\n            event.preventDefault();\n\n            _this.$main_menuitem = $main_menuitem;\n\n            _this._toggle_sub_menus();\n        },\n\n        _toggle_sub_menus: function() {\n            var _this = this;\n\n            for (var i = 0, $main_menuitem; $main_menuitem = _this.$main_menuitems_with_sub_menu[i]; i++) {\n                var is_active_menuitem = _this.$main_menuitem === $main_menuitem,\n                    $parent_menuitems  = _this._get_parent_menu_elements();\n\n                if (is_active_menuitem) {\n                    _this.sub_menu_is_open = $main_menuitem.getAttribute('aria-expanded') === 'false';\n\n                    $main_menuitem.parentElement.classList.toggle('expanded', _this.sub_menu_is_open);\n                    $main_menuitem.setAttribute('aria-expanded', _this.sub_menu_is_open);\n                }\n                else if ($parent_menuitems.indexOf($main_menuitem) !== -1) { // Check parents\n                    $main_menuitem.parentElement.classList.toggle('expanded', 'true');\n                    $main_menuitem.setAttribute('aria-expanded', 'true');\n                }\n                else {\n                    $main_menuitem.parentElement.classList.remove('expanded');\n                    $main_menuitem.setAttribute('aria-expanded', 'false');\n                }\n            }\n        },\n\n        _get_parent_menu_elements: function() {\n            var _this = this.$main_menuitem,\n                $findings = [];\n\n            while (_this.parentNode) {\n                _this = _this.parentNode;\n\n                if (_this.nodeName.toLowerCase() === 'li') {\n                    $findings.push(_this.querySelector('a'));\n                }\n            }\n\n            return $findings || False;\n        }\n    };\n\n    var OffCanvasMenuOpener = function($toggle_offcanvas_menu) {\n        var _this = this;\n        var  controls = $toggle_offcanvas_menu.querySelector('.open_offcanvas_menu').getAttribute('aria-controls');\n\n        _this.$toggle_offcanvas_menu = $toggle_offcanvas_menu.querySelector('label');\n        _this.$open_offcanvas_menu   = $toggle_offcanvas_menu.querySelector('.open_offcanvas_menu');\n        _this.$close_offcanvas_menu  = $toggle_offcanvas_menu.querySelector('.close_offcanvas_menu');\n        _this.$offcanvas_menu_state  = document.querySelector('#' + _this.$toggle_offcanvas_menu.getAttribute('for'));\n        _this.$offcanvas_menu        = document.getElementById(controls);\n        _this.$focus_elements        = _this.$offcanvas_menu.querySelectorAll('a');\n\n        _this.$key = {\n            'enter'  : 13,\n            'escape' : 27,\n            'space'  : 32\n        };\n    };\n\n    OffCanvasMenuOpener.prototype = {\n        init: function() {\n            var _this = this;\n\n            _this._init_keyboard();\n\n            _this.$toggle_offcanvas_menu.addEventListener('click', _this._toggle_menu.bind(_this));\n            _this.$open_offcanvas_menu.addEventListener('click', _this._open_menu.bind(_this));\n            _this.$close_offcanvas_menu.addEventListener('click', _this._close_menu.bind(_this));\n\n            _this.$offcanvas_menu.addEventListener('transitionend', function(event) {\n\n                // var _this = this;\n                if (event.target !== this) {\n                    return;\n                }\n\n                if (_this.$offcanvas_menu_state.checked) {\n                    if (_this.focus_element) {\n                        _this.focus_element = false;\n                        _this.$focus_elements[0].focus();\n                    }\n                }\n                else if (_this.focus_element) {\n                    _this.focus_element = false;\n                    _this.$open_offcanvas_menu.focus();\n                }\n            });\n        },\n\n        _init_keyboard: function() {\n            var _this = this;\n\n            _this.$open_offcanvas_menu.addEventListener('keydown', function(event) {\n                if (event.keyCode === _this.$key.space || event.keyCode === _this.$key.enter) {\n                    _this.focus_element = true;\n                }\n\n                if (event.keyCode === _this.$key.space) {\n                    event.preventDefault();\n                }\n            });\n\n            _this.$close_offcanvas_menu.addEventListener('keydown', function(event) {\n                if (event.keyCode === _this.$key.space) {\n                    event.preventDefault();\n                }\n            });\n\n            document.addEventListener('keydown', function(event) {\n                if (!_this.$offcanvas_menu_state.checked) {\n                    return;\n                }\n\n                if (event.keyCode === _this.$key.escape) {\n                    _this.focus_element = true;\n                    _this._close_menu(event);\n                }\n            });\n        },\n\n        _scroll_to_top: function() {\n            var _this = this;\n\n            setTimeout(function() {\n                var duration = 300,\n                    interval;\n\n                interval = setInterval(function() {\n                    var diff = -window.pageYOffset,\n                        step = diff / duration * 10;\n\n                    if (Math.abs(diff) <= Math.abs(step)) {\n                        if (_this.$anchor) {\n                            _this.$anchor.focus();\n                        }\n\n                        clearInterval(interval);\n                    }\n\n                    window.scrollBy(0, step);\n                    duration -= 10;\n                }, 10);\n            }, 300);\n        },\n\n        _toggle_menu: function(event) {\n            var _this = this;\n\n            if (_this.$offcanvas_menu_state.checked) {\n                _this._close_menu(event);\n            }\n            else {\n                _this._open_menu(event);\n            }\n        },\n\n        _open_menu: function(event) {\n            var _this = this;\n\n            event.preventDefault();\n\n            _this.$offcanvas_menu_state.checked = true;\n            _this.tab_index = 0;\n\n            _this._scroll_to_top();\n        },\n\n        _close_menu: function(event) {\n            var _this = this;\n\n            event.preventDefault();\n\n            _this.$offcanvas_menu_state.checked = false;\n            _this.tab_index = 0;\n        }\n    };\n\n    var $offcanvas_menu = document.getElementsByClassName('toggle_offcanvas_menu');\n\n    if ($offcanvas_menu.length) {\n        new OffCanvasMenu($offcanvas_menu[0]).init(); // init once\n\n        // create an opener for each button\n        for (var i = 0, len = $offcanvas_menu.length; i < len; i++) {\n            new OffCanvasMenuOpener($offcanvas_menu[i]).init();\n        }\n    }\n})(document);\n\n// FORMULARE\n// -------------------------------------------------------------------------------------------------\n\n(function() {\n    var FormHelpers = function(element) {\n        var _this = this;\n\n        _this.$el = $$(element);\n    };\n\n    FormHelpers.prototype = {\n        init: function() {\n            var _this = this;\n\n            _this._file_upload();\n            _this._select();\n        },\n\n        _file_upload: function() {\n            var _this = this;\n\n            if (_this.$el.get_attribute('type') !== 'file') {\n                return;\n            }\n\n            var $file_name   = _this.$el.get_parent().children('.file_name'),\n                $file_button = _this.$el.get_parent().children('.file_button');\n\n            _this.$el.add_event('focus', function() {\n                $file_button.add_class('focus');\n            });\n\n            _this.$el.add_event('blur', function() {\n                $file_button.remove_class('focus');\n            });\n\n            _this.$el.add_event('change', function() {\n                $file_name.set_text(_this.$el.get_file().filename);\n            });\n        },\n\n        _select: function() {\n            var _this = this;\n\n            if (!_this.$el.is_tag('select')) {\n                return;\n            }\n\n            _this.$el.add_event('focus', function() {\n                _this.$el.get_parent('.select').add_class('focus');\n            });\n\n            _this.$el.add_event('blur', function() {\n                _this.$el.get_parent('.select').remove_class('focus');\n            });\n        }\n    };\n\n    $$('input, select, textarea').for_each(function() {\n        new FormHelpers(this).init();\n    });\n})();\n\n// FORM VALIDIERUNG\n// -------------------------------------------------------------------------------------------------\n\n(function(document, window) {\n    var FormValidation = function($form) {\n        var _this = this;\n\n        _this._$form             = $form;\n        _this._$inputs           = _this._$form.querySelectorAll('input.validate, textarea.validate');\n        _this._$inputs_checkbox  = _this._$form.querySelectorAll('input[type=checkbox][required]');\n        _this._$selects          = _this._$form.querySelectorAll('select[required]');\n        _this._$button           = _this._$form.querySelector('[type=\"submit\"]');\n        _this._$error_msg_button = _this._$form.querySelector('.error_msg_button');\n    };\n\n    FormValidation.prototype = {\n        init: function() {\n            var _this = this;\n\n            for (var j = 0, inputs_len = _this._$inputs.length; j < inputs_len; j++) {\n                var $input = this._$inputs[j];\n\n                $input.addEventListener('keyup', _this._input_keyup.bind(_this, $input));\n                $input.addEventListener('blur', _this._input_blur.bind(_this, $input));\n            }\n\n            for (var i = 0, inputs_checkbox_len = _this._$inputs_checkbox.length; i < inputs_checkbox_len; i++) {\n                var $input_checkbox = this._$inputs_checkbox[i];\n\n                $input_checkbox.addEventListener('click', _this._input_checkbox_click.bind(_this, $input_checkbox));\n                $input_checkbox.addEventListener('keyup', _this._input_checkbox_keyup.bind(_this, $input_checkbox));\n                $input_checkbox.addEventListener('blur', _this._input_checkbox_blur.bind(_this, $input_checkbox));\n            }\n\n            for (var x = 0, selects_len = _this._$selects.length; x < selects_len; x++) {\n                var $select = this._$selects[x];\n\n                $select.addEventListener('change', _this._select_change.bind(_this, $select));\n                $select.addEventListener('blur', _this._select_blur.bind(_this, $select));\n            }\n\n            _this._$form.addEventListener('submit', _this._submit.bind(_this));\n\n            _this._check_submit_status();\n        },\n\n        _input_keyup: function($input, event) {\n            if (event.keyCode === 9 || event.keyCode === 27) {\n                // No validation on TAB or ESC\n                return;\n            }\n\n            this._validate_input($input, event);\n        },\n\n        _input_blur: function($input, event) {\n            this._validate_input($input, event);\n        },\n\n        _validate_input: function($input, event) {\n            var _this          = this,\n                id             = $input.getAttribute('id'),\n                $error_warning = document.querySelector('[for=\"' + id + '\"] .error_warning'),\n                min            = parseInt($input.getAttribute('min')),\n                pattern        = $input.getAttribute('pattern'),\n                regexp         = new RegExp(pattern),\n                value          = $input.value;\n\n            if ($input.type === 'file') {\n                _this._validate_input_file($input);\n            }\n            else if (value) {\n                if (pattern && value.match(regexp) || value >= min || !pattern && $input.required) {\n                    $input.setAttribute('aria-invalid', 'false');\n\n                    if (!event || event.type === 'blur') {\n                        $input.classList.remove('error');\n\n                        if ($error_warning) {\n                            $error_warning.classList.remove('show');\n                        }\n                    }\n                }\n                else {\n                    $input.setAttribute('aria-invalid', 'true');\n\n                    if (!event || event.type === 'blur') {\n                        $input.classList.add('error');\n\n                        if ($error_warning) {\n                            $error_warning.classList.add('show');\n                        }\n                    }\n                }\n            }\n            else if ($input.required) {\n                $input.setAttribute('aria-invalid', 'true');\n\n                if (!event || event.type === 'blur') {\n                    $input.classList.add('error');\n\n                    if ($error_warning) {\n                        $error_warning.classList.add('show');\n                    }\n                }\n            }\n            else {\n                $input.setAttribute('aria-invalid', 'false');\n\n                if (!event || event.type === 'blur') {\n                    $input.classList.remove('error');\n\n                    if ($error_warning) {\n                        $error_warning.classList.remove('show');\n                    }\n                }\n            }\n            _this._check_submit_status();\n        },\n\n        _validate_input_file: function($input) {\n            var _this           = this,\n                id              = $input.getAttribute('id'),\n                $error_warning  = document.querySelector('[for=\"' + id + '\"] .error_warning'),\n                value           = $input.value;\n\n            while ($input && $input.nodeType !== 9) {\n                $input = $input.parentNode;\n\n                if ($input.classList.contains('file')) {\n                    break;\n                }\n            }\n\n            if (value) {\n                $input.classList.remove('error');\n                if ($error_warning) {\n                    $error_warning.classList.remove('show');\n                }\n            }\n            else {\n                $input.classList.add('error');\n                if ($error_warning) {\n                    $error_warning.classList.add('show');\n                }\n            }\n\n            _this._check_submit_status();\n        },\n\n        _input_checkbox_click: function($input_checkbox, event) {\n            this._validate_input_checkbox($input_checkbox, event);\n        },\n\n        _input_checkbox_keyup: function($input_checkbox, event) {\n            if (event.keyCode === 32) { // SPACE\n                this._validate_input_checkbox($input_checkbox, event);\n            }\n        },\n\n        _input_checkbox_blur: function($input_checkbox, event) {\n            this._validate_input_checkbox($input_checkbox, event);\n        },\n\n        _validate_input_checkbox: function($input_checkbox, event) {\n            var _this          = this,\n                id             = $input_checkbox.getAttribute('id'),\n                $error_warning = document.querySelector('#label_' + id + ' .error_warning');\n\n            if ($input_checkbox.checked && !event ||\n                $input_checkbox.checked && event && event.type !== 'keyup' ||\n                !$input_checkbox.checked && event && event.type === 'keyup') {\n                $input_checkbox.setAttribute('aria-invalid', 'false');\n                $input_checkbox.classList.remove('error');\n                $error_warning.classList.remove('show');\n            }\n            else {\n                $input_checkbox.setAttribute('aria-invalid', 'true');\n                $input_checkbox.classList.add('error');\n                $error_warning.classList.add('show');\n            }\n\n            _this._check_submit_status();\n        },\n\n        _select_change: function($select, event) {\n            this._validate_select($select, event);\n        },\n\n        _select_blur: function($select, event) {\n            this._validate_select($select, event);\n        },\n\n        _validate_select: function($select, event) {\n            var _this          = this,\n                id             = $select.getAttribute('id'),\n                $wrapper       = $select,\n                $error_warning = document.querySelector('#label_' + id + ' .error_warning'),\n                value          = $select.value;\n\n            while ($wrapper && $wrapper.nodeType !== 9) {\n                $wrapper = $wrapper.parentNode;\n\n                if ($wrapper.classList.contains('select')) {\n                    break;\n                }\n            }\n\n            if (value) {\n                $select.setAttribute('aria-invalid', 'false');\n\n                if (!event || event.type === 'blur') {\n                    $wrapper.classList.remove('error');\n                    $error_warning.classList.remove('show');\n                }\n            }\n            else {\n                $select.setAttribute('aria-invalid', 'true');\n\n                if (!event || event.type === 'blur') {\n                    $wrapper.classList.add('error');\n                    $error_warning.classList.add('show');\n                }\n            }\n\n            _this._check_submit_status();\n        },\n\n        _check_submit_status: function() {\n            var _this                = this,\n                error_msg_button_id  = _this._$error_msg_button.getAttribute('id'),\n                enable_submit_button = true;\n\n            for (var j = 0, inputs_len = _this._$inputs.length; j < inputs_len; j++) {\n                if (_this._$inputs[j].getAttribute('aria-invalid') === 'true' ||\n                    _this._$inputs[j].required && !_this._$inputs[j].value) {\n                    enable_submit_button = false;\n                    break;\n                }\n            }\n\n            for (var i = 0, inputs_checkbox_len = _this._$inputs_checkbox.length; i < inputs_checkbox_len; i++) {\n                if (!_this._$inputs_checkbox[i].checked) {\n                    enable_submit_button = false;\n                    break;\n                }\n            }\n\n            for (var x = 0, selects_len = _this._$selects.length; x < selects_len; x++) {\n                if (!_this._$selects[x].value) {\n                    enable_submit_button = false;\n                    break;\n                }\n            }\n\n            if (enable_submit_button) {\n                _this._$button.classList.remove('disabled');\n                _this._$button.removeAttribute('aria-describedby');\n            }\n            else {\n                _this._$button.classList.add('disabled');\n                _this._$button.setAttribute('aria-describedby', error_msg_button_id);\n            }\n        },\n\n        _show_first_error: function() {\n            var _this              = this,\n                $first_input_error = _this._$form.querySelector('[aria-invalid=\"true\"]'),\n                top_position       = 0,\n                offset_top         = 60,\n                duration           = 300,\n                interval,\n                $obj;\n\n            if ($first_input_error) {\n                $obj         = $first_input_error;\n                top_position = $obj.offsetTop - offset_top;\n\n                while ($obj = $obj.offsetParent) {\n                    top_position += $obj.offsetTop;\n                }\n\n                if (window.pageYOffset < top_position) {\n                    $first_input_error.focus();\n                    return;\n                }\n\n                interval = setInterval(function() {\n                    var diff = top_position - window.pageYOffset,\n                        step = diff / duration * 10;\n\n                    if (Math.abs(diff) <= Math.abs(step)) {\n                        $first_input_error.focus();\n                        clearInterval(interval);\n                    }\n\n                    window.scrollBy(0, step);\n                    duration -= 10;\n                }, 10);\n            }\n        },\n\n        _submit: function(event) {\n            var _this = this;\n\n            _this._check_submit_status();\n\n            if (_this._$button.classList.contains('disabled')) {\n                event.preventDefault();\n\n                for (var j = 0, inputs_len = _this._$inputs.length; j < inputs_len; j++) {\n                    _this._validate_input(this._$inputs[j]);\n                }\n\n                for (var i = 0, inputs_checkbox_len = _this._$inputs_checkbox.length; i < inputs_checkbox_len; i++) {\n                    _this._validate_input_checkbox(this._$inputs_checkbox[i]);\n                }\n\n                for (var x = 0, selects_len = _this._$selects.length; x < selects_len; x++) {\n                    _this._validate_select(this._$selects[x]);\n                }\n\n                _this._show_first_error();\n            }\n        }\n    };\n\n    var $forms = document.querySelectorAll('[data-form*=\"validate\"]');\n\n    for (var i = 0, len = $forms.length; i < len; i++) {\n        new FormValidation($forms[i]).init();\n    }\n})(document, window);\n\n// FORMULARE: EINGABE ZWISCHENSPEICHERN\n// Wird verwendet für: formular\n// -------------------------------------------------------------------------------------------------\n\n(function(document) {\n    var FormCache = function($form) {\n        var _this = this;\n\n        _this._$form     = $form;\n        _this._form_name = _this._$form.getAttribute('data-form-cache');\n        _this._$inputs   = _this._$form.querySelectorAll('input, select, textarea');\n        _this._$cache    = {};\n    };\n\n    FormCache.prototype = {\n        init: function() {\n            var _this = this;\n\n            _this._init_events();\n            _this._restore_cache();\n        },\n\n        _init_events: function() {\n            var _this = this,\n                $input,\n                type,\n                event_listener;\n\n            for (var i = 0, len = _this._$inputs.length; i < len; i++) {\n                $input = _this._$inputs[i];\n                type    = $input.type;\n\n                if (type === 'checkbox') {\n                    event_listener = 'click';\n                }\n                else if (type === 'select-one') {\n                    event_listener = 'change';\n                }\n                else {\n                    event_listener = 'input';\n                }\n\n                $input.addEventListener(event_listener, _this._save_cache.bind(_this, $input), false);\n            }\n\n            _this._$form.addEventListener('submit', _this._reset_cache.bind(_this), false);\n        },\n\n        _save_cache: function($input) {\n            var _this = this,\n                name  = $input.getAttribute('name'),\n                type  = $input.type;\n\n            if (type === 'checkbox') {\n                _this._$cache[name] = $input.checked;\n            }\n            else if (type === 'select-one') {\n                _this._$cache[name] = $input.selectedIndex;\n            }\n            else {\n                _this._$cache[name] = $input.value;\n            }\n\n            localStorage.setItem(domain + '_form_cache_' + _this._form_name, JSON.stringify(_this._$cache));\n        },\n\n        _restore_cache: function() {\n            var _this  = this,\n                $cache = localStorage.getItem(domain + '_form_cache_' + _this._form_name),\n                $input,\n                type;\n\n            if (!$cache) {\n                return;\n            }\n\n            _this._$cache = JSON.parse($cache);\n\n            for (var key in _this._$cache) {\n                if (_this._$cache.hasOwnProperty(key)) {\n                    $input = _this._$form.querySelector('[name=\"' + key + '\"]');\n                    type   = $input.type;\n\n                    if (type === 'checkbox') {\n                        $input.checked = _this._$cache[key];\n                    }\n                    else if (type === 'select-one') {\n                        $input.selectedIndex = _this._$cache[key];\n                    }\n                    else {\n                        $input.value = _this._$cache[key];\n                    }\n                }\n            }\n        },\n\n        _reset_cache: function() {\n            var _this    = this,\n                is_valid = true;\n\n            for (var i = 0, len = _this._$inputs.length; i < len; i++) {\n                if (_this._$inputs[i].getAttribute('aria-invalid') === 'true') {\n                    is_valid = false;\n                    break;\n                }\n            }\n\n            if (is_valid) {\n                localStorage.removeItem(domain + '_form_cache_' + _this._form_name);\n            }\n        }\n    };\n\n    var $forms = document.querySelectorAll('[data-form-cache]');\n\n    for (var i = 0, len = $forms.length; i < len; i++) {\n        new FormCache($forms[i]).init();\n    }\n})(document);\n\n// FORMULARE: TEXTAREA AUTOGROW\n// Wird gebraucht für alle <textarea>\n// -------------------------------------------------------------------------------------------------\n\n(function(document) {\n    function _camel_case_property(property) {\n        return property.replace(/-([\\da-z])/gi, function(all, letter) {\n            return letter.toUpperCase();\n        });\n    }\n\n    function _get_style($element, property) {\n        var $styles = window.getComputedStyle($element, null),\n            style   = $styles.getPropertyValue(property);\n\n        return style;\n    }\n\n    function _set_style($element, $styles) {\n        for (var property in $styles) {\n            if ($styles.hasOwnProperty(property)) {\n                $element.style[_camel_case_property(property)] = $styles[property];\n            }\n        }\n    }\n\n    var FormTextareaAutogrow = function($textarea) {\n        var _this = this;\n\n        _this.$textarea      = $textarea;\n        _this.default_height = $textarea.offsetHeight;\n        _this.line_height    = parseInt(_get_style($textarea, 'line-height'));\n        _this.padding_bottom = parseInt(_get_style($textarea, 'padding-bottom'));\n        _this.padding_top    = parseInt(_get_style($textarea, 'padding-top'));\n    };\n\n    FormTextareaAutogrow.prototype = {\n        init: function() {\n            var _this = this;\n\n            _this.$textarea.addEventListener('blur', _this._set_textarea_height.bind(_this));\n            _this.$textarea.addEventListener('focus', _this._set_textarea_height.bind(_this));\n            _this.$textarea.addEventListener('keyup', _this._set_textarea_height.bind(_this));\n\n            _this._set_textarea_height();\n        },\n\n        _set_textarea_height: function() {\n            var _this = this,\n                $lines = _this.$textarea.value.split('\\n'),\n                length = $lines.length,\n                height = (length + 2) * _this.line_height + _this.padding_bottom + _this.padding_top;\n\n            _set_style(_this.$textarea, {\n                'height' : height >= _this.default_height ? height / 16 + 'rem' : _this.default_height / 16 + 'rem'\n            });\n        }\n    };\n\n    var $textareas = document.getElementsByTagName('textarea');\n\n    for (var i = 0, $textarea; $textarea = $textareas[i]; i++) {\n        new FormTextareaAutogrow($textarea).init();\n    }\n})(document);\n\n// FORMULARE: STANDORT AUSWAHL\n// Wird verwendet für: formular\n// -------------------------------------------------------------------------------------------------\n\n(function(document) {\n    var $secure_targets = document.querySelectorAll('[name=\"secure_target\"]');\n\n    if (!$secure_targets.length) {\n        return;\n    }\n\n    function selectLocation(id) {\n        if (id) {\n            var $locations_data = document.querySelectorAll('[data-forms-location=' + id + '] span');\n\n            for (var j = 0, $location_data; $location_data = $locations_data[j]; j++) {\n                var title  = $location_data.getAttribute('title'),\n                    $input = document.querySelector('input[name=\"to_' + title + '\"]');\n\n                $input.value = $location_data.textContent.trim();\n            }\n        }\n    }\n\n    for (var i = 0, $secure_target; $secure_target = $secure_targets[i]; i++) {\n        $secure_target.addEventListener('change', function() {\n            selectLocation(this.options[this.selectedIndex].getAttribute('id'));\n        });\n\n        if ($secure_target.options && $secure_target.selectedIndex) {\n            // Setzt die Werte aus dem Cache ins die Formular Post Variablen\n            selectLocation($secure_target.options[$secure_target.selectedIndex].getAttribute('id'));\n        }\n    }\n})(document);\n\n// FORMULARE: ÜBERNIMMT URL-PARAMETER FÜR DIE INPUTS\n// Wird gebraucht für: formular\n// -------------------------------------------------------------------------------------------------\n\n(function(document, window) {\n    var FormUrlParameters = function($form) {\n        var _this = this;\n\n        _this._$form = $form;\n    };\n\n    FormUrlParameters.prototype = {\n        init: function() {\n            var _this = this,\n                href  = window.location.href;\n\n            if (href.indexOf('?') > -1) {\n                _this._get_url_parameters(href);\n            }\n        },\n\n        _get_url_parameters: function(href) {\n            var _this       = this,\n                $parameters = href.split('?')[1].split('&');\n\n            _this._set_inputs_value($parameters);\n        },\n\n        _set_inputs_value: function($parameters) {\n            var _this = this,\n                $inputs,\n                $pair,\n                key,\n                value,\n                tagname,\n                type;\n\n            for (var i = 0, $parameter; $parameter = $parameters[i]; i++) {\n                $pair   = $parameter.split('=');\n                key     = $pair[0];\n                value   = decodeURIComponent($pair[1].replace(/\\+/g,' '));\n                $inputs = _this._$form.querySelectorAll('[name=' + key + ']');\n\n                if (!value || !$inputs.length) {\n                    continue;\n                }\n\n                tagname = $inputs[0].tagName;\n\n                if (tagname === 'SELECT') {\n                    _this.selected_select($inputs[0], value);\n                }\n                else if (tagname === 'INPUT' || tagname === 'TEXTAREA') {\n                    type = $inputs[0].type;\n\n                    if (type === 'radio') {\n                        _this._checked_input_radio($inputs, value);\n                    }\n                    else if (type === 'checkbox') {\n                        $inputs[0].defaultChecked = value;\n                    }\n                    else {\n                        $inputs[0].defaultValue = value;\n                    }\n                }\n            }\n        },\n\n        selected_select: function($select, value) {\n            var $options = $select.querySelectorAll('option');\n\n            for (var j = 0, $option; $option = $options[j]; j++) {\n                if ($option.getAttribute('value') === value) {\n                    $option.defaultSelected = true;\n                }\n                else {\n                    $option.defaultSelected = false;\n                }\n            }\n        },\n\n        _checked_input_radio: function($inputs, value) {\n            for (var j = 0, $input; $input = $inputs[j]; j++) {\n                if ($input.getAttribute('value') === value) {\n                    $input.defaultChecked = true;\n                }\n                else {\n                    $input.defaultChecked = false;\n                }\n            }\n        }\n    };\n\n    var $forms = document.querySelectorAll('[data-form*=\"url-parameters\"]');\n\n    for (var i = 0, $form; $form = $forms[i]; i++) {\n        new FormUrlParameters($form).init();\n    }\n})(document, window);\n\n// FORMULARE: SUCHBEGRIFF-VORSCHLÄGE FÜR DIE SUCHE\n// Wird gebraucht in: steuernews_search, search\n// -------------------------------------------------------------------------------------------------\n\n(function(document) {\n    var FormSearchDataList = function($form) {\n        var _this = this;\n\n        _this.$form    = $form;\n        _this.$search  = $form.querySelector('input[type=\"search\"]');\n        _this.$submit  = $form.querySelector('button[type=\"submit\"]');\n        _this.datalist = $form.getAttribute('data-datalist');\n        _this.list     = _this.$search.getAttribute('list');\n\n        _this.datalist_loaded   = false;\n        _this.datalist_inserted = false;\n    };\n\n    FormSearchDataList.prototype = {\n        init: function() {\n            var _this = this;\n\n            _this.$form.addEventListener('submit', _this._submit.bind(this));\n            _this.$search.addEventListener('focus', _this._focus.bind(this));\n\n            _this._init_keyboard();\n            _this._get_datalist();\n        },\n\n        _init_keyboard: function() {\n            var _this = this,\n                $key  = {\n                    'enter' : 13\n                };\n\n            _this.$search.addEventListener('keyup', function(event) {\n                if (event.keyCode !== $key.enter) {\n                    return;\n                }\n\n                var url = _this._get_url();\n\n                if (url) {\n                    location.href = url;\n                }\n            });\n        },\n\n        _get_datalist: function() {\n            var _this     = this,\n                $datalist = sessionStorage.getItem(domain + '_datalist_search'),\n                $ajax,\n                $options;\n\n            if (!_this.datalist) {\n                return;\n            }\n\n            if ($datalist) {\n                $options = _this._get_sorted_datalist($datalist);\n                _this._create_datalist($options);\n            }\n            else {\n                $ajax = new XMLHttpRequest();\n                $ajax.open('GET', _this.datalist, true);\n\n                $ajax.onload = function() {\n                    if (this.status === 200) {\n                        sessionStorage.setItem(domain + '_datalist_search', this.responseText);\n\n                        $options = _this._get_sorted_datalist(this.responseText);\n                        _this._create_datalist($options);\n                    }\n                };\n\n                $ajax.send();\n            }\n        },\n\n        _get_sorted_datalist: function($datalist) {\n            var $options = JSON.parse($datalist);\n\n            $options = $options.sort(function($a, $b) {\n\n                var a_value = $a.value.toLowerCase(),\n                    b_value = $b.value.toLowerCase();\n\n                if (a_value < b_value) {\n                    return -1;\n                }\n\n                if (b_value < a_value) {\n                    return 1;\n                }\n            });\n\n            return $options;\n        },\n\n        _create_datalist: function($options) {\n            var _this     = this,\n                $datalist = document.createDocumentFragment(),\n                $datalist_entry;\n\n            for (var i = 0, $option; $option = $options[i]; i++) {\n                $datalist_entry = document.createElement('option');\n\n                if ($option.url) {\n                    $datalist_entry.setAttribute('data-url', $option.url);\n                }\n\n                if ($option.label && /Chrome\\b/.test(navigator.userAgent)) {\n                    if (!(/Edge\\b/.test(navigator.userAgent))) {\n                        $datalist_entry.setAttribute('label', $option.label);\n                    }\n                }\n\n                $datalist_entry.setAttribute('data-value', $option.value.toLowerCase());\n                $datalist_entry.textContent = $option.value;\n                $datalist.appendChild($datalist_entry);\n            }\n\n            _this.$datalist = $datalist;\n        },\n\n        _focus: function() {\n            var _this = this;\n\n            if (_this.$datalist && !_this.datalist_inserted) {\n                document.querySelector('#' + _this.list).appendChild(_this.$datalist);\n                _this.datalist_inserted = true;\n                _this.$submit.removeAttribute('disabled');\n            }\n        },\n\n        _get_url: function() {\n            var _this   = this,\n                value   = _this.$search.value.toLowerCase(),\n                $option = document.querySelector('#' + _this.list + ' option[data-value=\"' + value + '\"]');\n\n            return $option ? $option.getAttribute('data-url') : '';\n        },\n\n        _submit: function(event) {\n            var _this = this,\n                url   = _this._get_url();\n\n            if (url) {\n                event.preventDefault();\n\n                location.href = url;\n            }\n        }\n    };\n\n    var $forms = document.querySelectorAll('[data-form*=\"datalist\"]');\n\n    for (var i = 0, $form; $form = $forms[i]; i++) {\n        new FormSearchDataList($form).init();\n    }\n})(document);\n\n// SUCHE\n// Wird gebraucht in: steuernews_search, suche\n// -------------------------------------------------------------------------------------------------\n\n(function(document) {\n    var FormSearch = function($search) {\n        var _this = this;\n\n        _this.$search       = $search;\n        _this.$input_search = $search.querySelector('input[type=\"search\"]');\n        _this.$button       = $search.querySelector('button[type=\"submit\"]');\n    };\n\n    FormSearch.prototype = {\n        init: function() {\n            var _this = this;\n\n            _this.$button.setAttribute('disabled', 'disabled');\n            _this.$input_search.addEventListener('input', _this._on_input.bind(_this));\n        },\n\n        _on_input: function() {\n            var _this = this;\n\n            if (_this.$input_search.value.length > 0) {\n                _this.$button.removeAttribute('disabled');\n            }\n            else {\n                _this.$button.setAttribute('disabled', 'disabled');\n            }\n        }\n    };\n\n    var $search = document.querySelectorAll('[role=\"search\"]');\n\n    if ($search.length) {\n        for (var i = 0, len = $search.length; i < len; i++) {\n            new FormSearch($search[i]).init();\n        }\n    }\n})(document);\n\n// STEUERNEWS SEO - ALLE AUSGABEN\n// -------------------------------------------------------------------------------------------------\n\n(function(document) {\n    var SteuernewsIssues = function(issues_select) {\n        var _this = this;\n\n        _this.$issues_select    = issues_select;\n        _this.$select           = issues_select.querySelector('select');\n        _this.$button           = issues_select.querySelector('.button');\n        _this.$active_option    = _this.$select.querySelector('option:checked');\n    };\n\n    SteuernewsIssues.prototype = {\n        init: function() {\n            var _this = this;\n\n            _this.$select.addEventListener('change', function() {\n                this.querySelectorAll('option')[this.selectedIndex];\n                href = this.querySelectorAll('option')[this.selectedIndex].value;\n                _this.$button.href = href;\n            });\n        },\n    };\n\n    var $steuernews_issues_select = document.querySelectorAll('.steuernews_issues_select');\n\n    for (var i = 0; i < $steuernews_issues_select.length; i++) {\n        new SteuernewsIssues($steuernews_issues_select[i]).init();\n    }\n\n})(document);\n\n// ANIMATION HELPERS\n// Wird standardmaeßig in keinem Template gebraucht.\n// -------------------------------------------------------------------------------------------------\n\n(function(document, window) {\n    var AnimationHelpers = function($animated_element) {\n        var _this = this;\n\n        _this._$animated_element = $animated_element;\n        _this._offset            = _this._$animated_element.getAttribute('data-animation-offset');\n    };\n\n    AnimationHelpers.prototype = {\n        init: function() {\n            var _this = this;\n\n            _this.$show_animation = this._is_in_viewport.bind(_this);\n\n            window.addEventListener('load', _this.$show_animation, true);\n            window.addEventListener('scroll', _this.$show_animation, true);\n        },\n\n        _offset_top: function() {\n            var _this  = this,\n                $node = _this._$animated_element,\n                top   = $node.offsetTop;\n\n            while ($node = $node.offsetParent) {\n                top += $node.offsetTop;\n            }\n\n            return top;\n        },\n\n        _is_in_viewport: function() {\n            var _this      = this,\n                scroll_top = window.pageYOffset + document.documentElement.clientHeight,\n                offset_top = _this._offset_top() + _this._$animated_element.offsetHeight;\n\n            if (_this._offset) {\n                offset_top = offset_top - _this._offset;\n            }\n\n            if (scroll_top >= offset_top) {\n                _this._$animated_element.classList.add('animated');\n                _this._remove_scroll_event();\n            }\n        },\n\n        _remove_scroll_event: function() {\n            var _this = this;\n\n            window.removeEventListener('scroll', _this.$show_animation, true);\n        }\n    };\n\n    var $animated_elements = document.querySelectorAll('[data-animated]');\n\n    for (var i = 0, len = $animated_elements.length; i < len; i++) {\n        new AnimationHelpers($animated_elements[i]).init();\n    }\n}(document, window));\n\n// VCARD SWITCHER FÜR DESKTOP/MOBIL\n// Wird verwendet für: team_overview, team_entry, address_vcard_button, steuernews_contact_person\n// -------------------------------------------------------------------------------------------------\n\n(function(document) {\n    if (device.mobile || device.tablet) {\n        return;\n    }\n\n    var $vcards = document.querySelectorAll('[data-vcard-href]');\n\n    for (var i = 0, len = $vcards.length; i < len; i++) {\n        var $vcard = $vcards[i],\n            href   = $vcard.getAttribute('data-vcard-href');\n\n        if (href) {\n            $vcard.setAttribute('href', href);\n            $vcard.removeAttribute('data-vcard-href');\n        }\n    }\n}(document));\n\n// SLIDER HORIZONTAL\n// Wird verwendet für: steuernews_article_slider\n// -------------------------------------------------------------------------------------------------\n\n(function(document) {\n    var Slider = function($slider) {\n        var _this = this;\n\n        _this.$slider_wrapper   = $slider;\n        _this.$slider           = $slider.querySelector('.slider');\n        _this.$slides           = $slider.querySelectorAll('.slide');\n        _this.$prev             = $slider.querySelector('.prev_slide');\n        _this.$next             = $slider.querySelector('.next_slide');\n        _this.index             = 0;\n        _this.time              = 4000;\n        _this.intervall;\n        _this.touch_start_x;\n\n        // Stoppen wenn Maus über Objekt ist\n        _this.stop_on_hover     = false;\n    };\n\n    Slider.prototype = {\n        init: function() {\n            var _this = this;\n\n            _this._init_mouse();\n            _this._init_touch();\n\n            if (_this.stop_on_hover) {\n                _this.$slider.addEventListener('mouseover', function() {\n                    clearInterval(_this.intervall);\n                });\n\n                _this.$slider.addEventListener('mouseout', function() {\n                    _this.intervall = setInterval(_this._next_slide.bind(_this), _this.time);\n                });\n            }\n\n            // Im Skript vergeben, wenn kein javascript aktiviert ist soll Button ausgeblendet sein\n            _this.$next.classList.add('show');\n            _this.intervall = setInterval(_this._next_slide.bind(_this), _this.time);\n\n            window.addEventListener('resize', function() {\n                _this._set_height();\n            });\n\n            window.addEventListener('load', function() {\n                _this._set_height();\n            });\n\n        },\n\n        _init_mouse: function() {\n            var _this = this;\n\n            _this.$prev.addEventListener('click', function(event) {\n                event.preventDefault();\n                event.stopPropagation();\n                _this._prev_slide();\n            });\n\n            _this.$next.addEventListener('click', function(event) {\n                event.preventDefault();\n                event.stopPropagation();\n                _this._next_slide();\n            });\n        },\n\n        _init_touch: function() {\n            var _this = this\n\n            _this.$slider.addEventListener('touchstart', function(event) {\n                clearInterval(_this.intervall);\n                _this.touch_start_x = event.changedTouches[0].pageX;\n            });\n\n            _this.$slider.addEventListener('touchmove', function(event) {\n                var touch   = event.touches[0] || event.changedTouches[0],\n                    touch_x = touch.pageX;\n\n                if ((touch_x - _this.touch_start_x > 50) || (touch_x - _this.touch_start_x < -50)) {\n                    event.preventDefault();\n                }\n            });\n\n            _this.$slider.addEventListener('touchend', function(event) {\n                var touch   = event.touches[0] || event.changedTouches[0],\n                    touch_x = touch.pageX;\n\n                if (touch_x - _this.touch_start_x > 50) {\n                    if (_this.index > 0) {\n                        _this._prev_slide();\n                    } else {\n                        _this.intervall = setInterval(_this._next_slide.bind(_this), _this.time);\n                    }\n                }\n                else if (touch_x - _this.touch_start_x < -50) {\n                    if (_this.index < _this.$slides.length - 1) {\n                        _this._next_slide();\n                    } else {\n                        _this.intervall = setInterval(_this._next_slide.bind(_this), _this.time);\n                    }\n                }\n            });\n        },\n\n        _prev_slide: function() {\n            var _this = this;\n\n            _this.index--;\n            if (_this.index < 0) {\n                _this.index = _this.$slides.length - 1;\n            }\n\n            _this._slide();\n        },\n\n        _next_slide: function() {\n            var _this = this;\n\n            _this.index++;\n            if (_this.index >= _this.$slides.length) {\n                _this.index = 0;\n            }\n\n            _this._slide();\n        },\n\n        _slide: function() {\n            var _this = this,\n                value = 'translate(-' + _this.index * 100 / _this.$slides.length + '%)';\n\n            clearInterval(_this.intervall);\n            _this.$slider.style.transform = value;\n            _this.$slider.style.WebkitTransform = value;\n            _this.$slider.style.msTransform = value;\n            _this.intervall = setInterval(_this._next_slide.bind(_this), _this.time);\n            _this._manage_control();\n        },\n\n        _manage_control: function() {\n            var _this = this;\n\n            if (_this.index >= 0 && _this.index < _this.$slides.length - 1) {\n                _this.$next.classList.add('show');\n            } else {\n                _this.$next.classList.remove('show');\n            }\n\n            if (_this.index > 0 && _this.index < _this.$slides.length) {\n                _this.$prev.classList.add('show');\n            } else {\n                _this.$prev.classList.remove('show');\n            }\n        },\n\n        _set_height: function() {\n            var _this   = this,\n                highest = 0,\n                height = 0;\n\n            // reset height\n            _this.$slider_wrapper.style.height = 'auto';\n            _this.$slider.style.height = 'auto';\n\n            for (var i = 0; i < _this.$slides.length; i++) {\n                height = _this.$slides[i].clientHeight;\n                if (height > highest) {\n                    highest = height;\n                }\n            }\n\n            height = height + 10;\n\n            _this.$slider_wrapper.style.height = highest + 'px';\n            _this.$slider.style.height = highest + 'px';\n        }\n    };\n\n    var $sliders = document.querySelectorAll('.steuernews_article_slider');\n\n    for (var i = 0, len = $sliders.length; i < len; i++) {\n        new Slider($sliders[i]).init();\n    }\n\n})(document);\n\n// ACCORDION\n// Wird verwendet für: infolist_list_content, listfoldercontent, u_online_benefits_1\n// -------------------------------------------------------------------------------------------------\n\n(function(document, window) {\n    var Accordion = function($accordion) {\n        var _this = this;\n\n        _this.$accordion    = $accordion;\n        _this.$tab          = $accordion.querySelectorAll('[role=tab]');\n        _this.anchor        = location.hash;\n\n        _this.one_tab_open  = true; // only one Tab open\n    }\n    Accordion.prototype = {\n        init: function() {\n            var _this  = this;\n\n\n            _this._setup_accordion();\n            _this._keyboard_nav();\n\n            if (_this.anchor.length > 0) {\n                var $accordion_entry = _this.$accordion.querySelector(_this.anchor);\n\n                // no_anchor_link wird für Unternehmen Online verwendet\n\n                if ($accordion_entry && !$accordion_entry.classList.contains('no_anchor_link')) {\n                    _this._open_tabpanel($accordion_entry);\n                }\n            }\n\n            for (var i = 0; i < _this.$tab.length; i++) {\n                _this.$tab[i].addEventListener('click', function(event) {\n                    event.preventDefault();\n                    _this._toggle_tabpanel(this);\n                });\n            }\n\n            window.addEventListener('resize', function() {\n                _this._on_resize();\n            });\n\n        },\n\n        _toggle_tabpanel: function($tab) {\n            var _this = this;\n\n            if ($tab.getAttribute('aria-expanded') === 'true') {\n                _this._close_tabpanel($tab);\n            }\n            else {\n                _this._open_tabpanel($tab);\n            }\n        },\n\n        _close_tabpanel: function($tab) {\n            var _this  = this,\n                $tabpanel = _this._get_tabpanel($tab);\n\n            $tab.setAttribute('aria-expanded', 'false');\n            $tab.setAttribute('tabindex', '-1');\n            $tabpanel.setAttribute('aria-hidden', 'true');\n            $tabpanel.style.maxHeight = 0;\n            // history.pushState(null, null, ' ');\n\n            $tabpanel.addEventListener('transitionend', function() {\n                if (this.getAttribute('aria-hidden') === 'true') {\n                    this.classList.add('hideme');\n                }\n            }, false);\n        },\n\n        _open_tabpanel: function($tab) {\n            var _this  = this,\n                $tabpanel = _this._get_tabpanel($tab);\n\n            if (_this.one_tab_open) {\n                for (var i = 0; i < _this.$tab.length; i++) {\n                    if (_this.$tab[i] !== $tab) {\n                        _this._close_tabpanel(_this.$tab[i]);\n                    }\n                }\n            }\n\n            $tab.setAttribute('aria-expanded', 'true');\n            $tab.setAttribute('tabindex', '0');\n            $tabpanel.setAttribute('aria-hidden', 'false');\n            $tabpanel.classList.remove('hideme');\n\n            window.location.hash = $tab.getAttribute('id');\n\n            setTimeout(function() {\n                $tabpanel.style.maxHeight = $tabpanel.max_height + 'px';\n            }, 20);\n        },\n\n        _get_tabpanel: function($tab) {\n            return document.querySelector('#' +  $tab.getAttribute('aria-controls'));\n        },\n\n        _setup_accordion: function() {\n            var _this = this,\n                $tabpanel;\n\n            for (var i = 0; i < _this.$tab.length; i++) {\n                _this.$tab[i].index = i;\n\n                $tabpanel = _this._get_tabpanel(_this.$tab[i]);\n                $tabpanel.classList.remove('hideme');\n                $tabpanel.max_height = $tabpanel.clientHeight;\n\n                _this._close_tabpanel(_this.$tab[i]);\n                $tabpanel.classList.add('animated');\n                $tabpanel.classList.add('hideme');\n            }\n\n            _this.$tab[0].setAttribute('tabindex', '0');\n        },\n\n        _on_resize: function() {\n            var _this = this,\n                $tabpanel;\n\n            for (var i = 0; i < _this.$tab.length; i++) {\n                $tabpanel = _this._get_tabpanel(_this.$tab[i]);\n                $tabpanel.removeAttribute('style');\n                $tabpanel.classList.remove('animated');\n                $tabpanel.classList.remove('hideme');\n                $tabpanel.max_height = $tabpanel.clientHeight;\n\n                if (_this.$tab[i].getAttribute('aria-expanded') === 'true') {\n                    _this._open_tabpanel(_this.$tab[i]);\n                } else {\n                    _this._close_tabpanel(_this.$tab[i]);\n                }\n\n                $tabpanel.classList.add('animated');\n            }\n        },\n\n        _keyboard_nav: function() {\n            var _this = this,\n                $map  = {\n                            13 : false, // Eingabe\n                            32 : false, // Leertaste\n                            35 : false, // Pos1\n                            36 : false, // Ende\n                            37 : false, // Pfeil nach links\n                            38 : false, // Pfeil nach oben\n                            39 : false, // Pfeil nach rechts\n                            40 : false  // Pfeil nach unten\n                        },\n                index;\n\n            for (var i = 0; i < _this.$tab.length; i++) {\n\n                _this.$tab[i].addEventListener('keydown', function(event) {\n                    index = this.index;\n                    if (event.keyCode in $map) {\n                        event.preventDefault();\n                        $map[event.keyCode] = true;\n\n                        if ($map[13] || $map[32]) {\n                            _this._toggle_tabpanel(this);\n                        }\n                        else if ($map[35]) {\n                            _this._change_focused_tab(_this.$tab.length - 1);\n                        }\n                        else if ($map[36]) {\n                            _this._change_focused_tab(0);\n                        }\n                        else if ($map[37] || $map[38]) {\n                            _this._change_focused_tab(index - 1);\n                        }\n                        else if ($map[39] || $map[40]) {\n                            _this._change_focused_tab(index + 1);\n                        }\n                    }\n                });\n\n                _this.$tab[i].addEventListener('keyup', function(event) {\n                    if (event.keyCode in $map) {\n                        $map[event.keyCode] = false;\n                    }\n                });\n            }\n        },\n\n        _change_focused_tab: function(index) {\n            var _this = this;\n\n            if (index === _this.$tab.length) {\n                index = 0;\n            }\n\n            if (index === -1) {\n                index = _this.$tab.length - 1;\n            }\n\n            $tab = _this.$tab[index];\n\n            for (var i = 0; i < _this.$tab.length; i++) {\n                _this.$tab[i].setAttribute('tabindex', '-1');\n                _this.$tab[i].setAttribute('aria-selected', 'false');\n            }\n\n            $tab.setAttribute('tabindex', '0');\n            $tab.setAttribute('aria-selected', 'true');\n\n            $tab.focus();\n        }\n    };\n\n    var $accordions = document.querySelectorAll('.accordion');\n\n    for (var i = 0; i < $accordions.length; i++) {\n        new Accordion($accordions[i]).init();\n    }\n\n})(document, window);\n\n// ONLINETOOL POPUP\n// Wird verwendet für: download_overview, onlinetools_popup_overview, video_tutorials_overview\n// -------------------------------------------------------------------------------------------------\n\n(function(document, window) {\n    var OnlinetoolPopup = function($onlinetool) {\n        var _this = this;\n\n        _this.$onlinetool = $onlinetool;\n\n        _this.title = $onlinetool.getAttribute('title');\n        _this.id    = '#' + $onlinetool.getAttribute('data-popup-id');\n        _this.href  = $onlinetool.getAttribute('href');\n    },\n\n    $body = document.querySelector('body'),\n    $popup,\n    $content,\n    $close,\n    $iframe;\n\n    // Private\n\n    function _create_element(html) {\n        var $div            = document.createElement('div'),\n            $filtered_nodes = [],\n            $nodes;\n\n        $div.innerHTML = html.trim();\n        $nodes         = $div.childNodes;\n\n        for (var i = 0, len = $nodes.length; $nodes !== null && i < len; i++) {\n            if ($nodes[i].nodeType === 1) {\n                $filtered_nodes.push($nodes[i]);\n            }\n        }\n\n        return $filtered_nodes;\n    }\n\n    function _create_popup() {\n        var html = '',\n            $html;\n\n        html += '<div class=\"hideme_print popup_overlay\">';\n        html += '<div class=\"popup_content\">';\n        html += '<div class=\"popup_header\">';\n        html += '<a class=\"popup_close\" href=\"\"><svg class=\"icon\"><use xlink:href=\"' + zms_common + 'images/sprite/symbol/svg/sprite.symbol.svg#close\"></use></svg></a>';\n        html += '</div>';\n        html += '<div class=\"content preloader\">';\n        html += '<svg class=\"icon_spin\"><use xlink:href=\"' + zms_common + 'images/sprite/symbol/svg/sprite.symbol.svg#spin\"></use></svg>';\n        html += '<iframe class=\"popup_iframe\" frameborder=\"0\" src=\"\" title=\"Onlinetool\"></iframe>';\n        html += '</div>';\n        html += '</div>';\n        html += '</div>';\n\n        $html = _create_element(html);\n\n        for (var j = 0, html_len = $html.length; j < html_len; j++) {\n            $body.appendChild($html[j]);\n        }\n\n        $popup   = document.querySelector('.popup_overlay');\n        $content = $popup.querySelector('.popup_content');\n        $close   = $popup.querySelector('.popup_close');\n        $iframe  = $popup.querySelector('iframe');\n\n        $iframe.addEventListener('load', function() {\n            if ($iframe.getAttribute('src').length && $popup.classList.contains('show')) {\n                $iframe.classList.add('show');\n            }\n        });\n    }\n\n    function _close_popup() {\n        var _close = function() {\n            $body.classList.remove('no_scroll');\n            $content.classList.remove('show');\n            $iframe.classList.remove('show');\n\n            window.history.replaceState(null, document.title, window.location.pathname);\n        };\n\n        $close.addEventListener('click', function(event) {\n            event.preventDefault();\n            _close();\n        });\n\n        document.addEventListener('keydown', function(event) {\n            if ($popup.classList.contains('show') && event.which === 27) {\n                _close();\n            }\n        });\n\n        $content.addEventListener('transitionend', function() {\n            if (!$content.classList.contains('show')) {\n                $popup.classList.remove('show');\n            }\n        });\n    }\n\n    _create_popup();\n    _close_popup();\n\n    // Public\n\n    OnlinetoolPopup.prototype = {\n        init: function() {\n            var _this = this;\n\n            _this.$onlinetool.addEventListener('click', function(event) {\n                event.preventDefault();\n                _this.open();\n            });\n        },\n\n        open: function() {\n            var _this = this;\n\n            $body.classList.add('no_scroll');\n            $popup.classList.add('show');\n            $content.classList.add('show');\n            $iframe.setAttribute('src', _this.href);\n\n            window.history.replaceState(null, document.title, _this.id);\n        }\n    };\n\n    if (window.device.mobile || window.device.tablet) {\n        return;\n    }\n\n    var $onlinetools = document.querySelectorAll('[data-popup=\"true\"]'),\n        $onlinetool;\n\n    for (var i = 0, len = $onlinetools.length; i < len; i++) {\n        $onlinetool = new OnlinetoolPopup($onlinetools[i]);\n\n        $onlinetool.init();\n\n        if ($onlinetool.id === window.location.hash) {\n            $onlinetool.open();\n        }\n    }\n})(document, window);\n\n// SANFTES SCROLLEN\n// -------------------------------------------------------------------------------------------------\n\n(function(document, window) {\n    var SmoothScroll = function($link) {\n        var _this = this;\n\n        _this.$link = $link;\n        _this.has_animationend_event = false;\n    },\n    offset_top = 20;\n\n    function _get_offset_top($target) {\n        var $obj         = $target,\n            top_position = $obj.offsetTop;\n\n        while ($obj = $obj.offsetParent) {\n            top_position += $obj.offsetTop;\n        }\n        return top_position;\n    }\n\n    function _remove_highlight_class($highlighted_target) {\n        if ($highlighted_target.has_animationend_event) {\n            return;\n        }\n\n        $highlighted_target.addEventListener('animationend', function(event) {\n            if (event.target !== this) {\n                return;\n            }\n\n            $highlighted_target.has_animationend_event = true;\n            $highlighted_target.classList.remove('highlighted');\n        });\n    }\n\n    function _scroll_to($target, offset, $callback) {\n        var top_position = _get_offset_top($target) - offset,\n            duration     = 300,\n            $highlighted_target,\n            interval;\n\n        if ($target.getAttribute('id')) {\n            $highlighted_target = $target.parentElement;\n        }\n        else {\n            $highlighted_target = $target;\n        }\n\n        interval = setInterval(function() {\n            var diff = top_position - window.pageYOffset,\n                step = diff / duration * 10;\n\n            if (Math.abs(diff) <= Math.abs(step)) {\n                clearInterval(interval);\n                $highlighted_target.classList.add('highlighted');\n\n                if (typeof $callback === 'function') {\n                    $callback();\n                }\n            }\n\n            window.scrollBy(0, step);\n            duration -= 10;\n        }, 10);\n\n        _remove_highlight_class($highlighted_target);\n    }\n\n    function _auto_scroll() {\n        var hash      = location.hash,\n            parameter = location.search,\n            $target;\n\n        if (hash.length <= 1) {\n            return;\n        }\n\n        $target = document.querySelector(hash) || document.querySelector('a[id=\"' + hash.slice(1) + '\"]');\n\n        if (!$target || $target.classList.contains('no_smooth_scroll')) {\n            return;\n        }\n\n        location.hash = ''; // IE und Edge Bug - Scroll beginnt nicht am Seitenanfang\n        window.history.replaceState(null, document.title, location.pathname + parameter);\n\n        setTimeout(function() { // Firefox Bug - Scroll beginnt nicht am Seitenanfang\n            window.scrollTo(0, 0);\n\n            _scroll_to($target, offset_top, function() {\n                $target.focus();\n                window.history.replaceState(null, document.title, parameter + hash);\n            });\n        }, 10);\n    }\n\n    SmoothScroll.prototype = {\n        init: function() {\n            var _this = this;\n\n            if (_this.$link.classList.contains('no_smooth_scroll')) {\n                return;\n            }\n\n            if (_this.$link.tagName === 'A' || _this.$link.tagName === 'a') {\n                _this._click_link();\n            }\n            else {\n                _this._change_select();\n            }\n        },\n\n        _click_link: function() {\n            var _this = this;\n\n            _this.$link.addEventListener('click', function(event) {\n                var hash = this.getAttribute('href') || this.getAttribute('xlink:href'),\n                    parameter,\n                    $parameter,\n                    $hash,\n                    $target;\n\n                if (hash.length === 1) {\n                    return;\n                }\n\n                $hash      = hash.split('#');\n                $parameter = $hash[0].split('?');\n                parameter  = $parameter.length === 2 ? '?' + $parameter[1] : '';\n                hash       = $hash[1];\n                $target    = document.querySelector('#' + hash) || document.querySelector('a[id=\"' + hash + '\"]');\n\n                if (!$target) {\n                    return;\n                }\n\n                event.preventDefault();\n\n                _scroll_to($target, offset_top, function() {\n                    $target.focus();\n                    window.history.replaceState(null, document.title, parameter + '#' + hash);\n                });\n            });\n        },\n\n        _change_select: function() {\n            var _this = this;\n\n            _this.$link.addEventListener('change', function(event) {\n                var hash = this.options[this.selectedIndex].value,\n                    $target;\n\n                if (hash.length === 1) {\n                    return;\n                }\n\n                hash    = hash.split('#')[1];\n                $target = document.querySelector('#' + hash) || document.querySelector('a[id=\"' + hash + '\"]');\n\n                if (!$target) {\n                    return;\n                }\n\n                event.preventDefault();\n\n                _scroll_to($target, offset_top, function() {\n                    $target.focus();\n                    window.history.replaceState(null, document.title, hash);\n                });\n            });\n        }\n    };\n\n    var $links = document.querySelectorAll('a[*|href*=\"#\"], select');\n\n    for (var i = 0, len = $links.length; i < len; i++) {\n        new SmoothScroll($links[i]).init();\n    }\n\n    _auto_scroll();\n})(document, window);\n\n/*! picturefill - v3.0.2 - 2016-02-12\n * https://scottjehl.github.io/picturefill/\n * Copyright (c) 2016 https://github.com/scottjehl/picturefill/blob/master/Authors.txt; Licensed MIT\n */\n/*! Gecko-Picture - v1.0\n * https://github.com/scottjehl/picturefill/tree/3.0/src/plugins/gecko-picture\n * Firefox's early picture implementation (prior to FF41) is static and does\n * not react to viewport changes. This tiny module fixes this.\n */\n(function(window) {\n\t/*jshint eqnull:true */\n\tvar ua = navigator.userAgent;\n\n\tif ( window.HTMLPictureElement && ((/ecko/).test(ua) && ua.match(/rv\\:(\\d+)/) && RegExp.$1 < 45) ) {\n\t\taddEventListener(\"resize\", (function() {\n\t\t\tvar timer;\n\n\t\t\tvar dummySrc = document.createElement(\"source\");\n\n\t\t\tvar fixRespimg = function(img) {\n\t\t\t\tvar source, sizes;\n\t\t\t\tvar picture = img.parentNode;\n\n\t\t\t\tif (picture.nodeName.toUpperCase() === \"PICTURE\") {\n\t\t\t\t\tsource = dummySrc.cloneNode();\n\n\t\t\t\t\tpicture.insertBefore(source, picture.firstElementChild);\n\t\t\t\t\tsetTimeout(function() {\n\t\t\t\t\t\tpicture.removeChild(source);\n\t\t\t\t\t});\n\t\t\t\t} else if (!img._pfLastSize || img.offsetWidth > img._pfLastSize) {\n\t\t\t\t\timg._pfLastSize = img.offsetWidth;\n\t\t\t\t\tsizes = img.sizes;\n\t\t\t\t\timg.sizes += \",100vw\";\n\t\t\t\t\tsetTimeout(function() {\n\t\t\t\t\t\timg.sizes = sizes;\n\t\t\t\t\t});\n\t\t\t\t}\n\t\t\t};\n\n\t\t\tvar findPictureImgs = function() {\n\t\t\t\tvar i;\n\t\t\t\tvar imgs = document.querySelectorAll(\"picture > img, img[srcset][sizes]\");\n\t\t\t\tfor (i = 0; i < imgs.length; i++) {\n\t\t\t\t\tfixRespimg(imgs[i]);\n\t\t\t\t}\n\t\t\t};\n\t\t\tvar onResize = function() {\n\t\t\t\tclearTimeout(timer);\n\t\t\t\ttimer = setTimeout(findPictureImgs, 99);\n\t\t\t};\n\t\t\tvar mq = window.matchMedia && matchMedia(\"(orientation: landscape)\");\n\t\t\tvar init = function() {\n\t\t\t\tonResize();\n\n\t\t\t\tif (mq && mq.addListener) {\n\t\t\t\t\tmq.addListener(onResize);\n\t\t\t\t}\n\t\t\t};\n\n\t\t\tdummySrc.srcset = \"data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\";\n\n\t\t\tif (/^[c|i]|d$/.test(document.readyState || \"\")) {\n\t\t\t\tinit();\n\t\t\t} else {\n\t\t\t\tdocument.addEventListener(\"DOMContentLoaded\", init);\n\t\t\t}\n\n\t\t\treturn onResize;\n\t\t})());\n\t}\n})(window);\n\n/*! Picturefill - v3.0.2\n * http://scottjehl.github.io/picturefill\n * Copyright (c) 2015 https://github.com/scottjehl/picturefill/blob/master/Authors.txt;\n *  License: MIT\n */\n\n(function( window, document, undefined ) {\n\t// Enable strict mode\n\t\"use strict\";\n\n\t// HTML shim|v it for old IE (IE9 will still need the HTML video tag workaround)\n\tdocument.createElement( \"picture\" );\n\n\tvar warn, eminpx, alwaysCheckWDescriptor, evalId;\n\t// local object for method references and testing exposure\n\tvar pf = {};\n\tvar isSupportTestReady = false;\n\tvar noop = function() {};\n\tvar image = document.createElement( \"img\" );\n\tvar getImgAttr = image.getAttribute;\n\tvar setImgAttr = image.setAttribute;\n\tvar removeImgAttr = image.removeAttribute;\n\tvar docElem = document.documentElement;\n\tvar types = {};\n\tvar cfg = {\n\t\t//resource selection:\n\t\talgorithm: \"\"\n\t};\n\tvar srcAttr = \"data-pfsrc\";\n\tvar srcsetAttr = srcAttr + \"set\";\n\t// ua sniffing is done for undetectable img loading features,\n\t// to do some non crucial perf optimizations\n\tvar ua = navigator.userAgent;\n\tvar supportAbort = (/rident/).test(ua) || ((/ecko/).test(ua) && ua.match(/rv\\:(\\d+)/) && RegExp.$1 > 35 );\n\tvar curSrcProp = \"currentSrc\";\n\tvar regWDesc = /\\s+\\+?\\d+(e\\d+)?w/;\n\tvar regSize = /(\\([^)]+\\))?\\s*(.+)/;\n\tvar setOptions = window.picturefillCFG;\n\t/**\n\t * Shortcut property for https://w3c.github.io/webappsec/specs/mixedcontent/#restricts-mixed-content ( for easy overriding in tests )\n\t */\n\t// baseStyle also used by getEmValue (i.e.: width: 1em is important)\n\tvar baseStyle = \"position:absolute;left:0;visibility:hidden;display:block;padding:0;border:none;font-size:1em;width:1em;overflow:hidden;clip:rect(0px, 0px, 0px, 0px)\";\n\tvar fsCss = \"font-size:100%!important;\";\n\tvar isVwDirty = true;\n\n\tvar cssCache = {};\n\tvar sizeLengthCache = {};\n\tvar DPR = window.devicePixelRatio;\n\tvar units = {\n\t\tpx: 1,\n\t\t\"in\": 96\n\t};\n\tvar anchor = document.createElement( \"a\" );\n\t/**\n\t * alreadyRun flag used for setOptions. is it true setOptions will reevaluate\n\t * @type {boolean}\n\t */\n\tvar alreadyRun = false;\n\n\t// Reusable, non-\"g\" Regexes\n\n\t// (Don't use \\s, to avoid matching non-breaking space.)\n\tvar regexLeadingSpaces = /^[ \\t\\n\\r\\u000c]+/,\n\t    regexLeadingCommasOrSpaces = /^[, \\t\\n\\r\\u000c]+/,\n\t    regexLeadingNotSpaces = /^[^ \\t\\n\\r\\u000c]+/,\n\t    regexTrailingCommas = /[,]+$/,\n\t    regexNonNegativeInteger = /^\\d+$/,\n\n\t    // ( Positive or negative or unsigned integers or decimals, without or without exponents.\n\t    // Must include at least one digit.\n\t    // According to spec tests any decimal point must be followed by a digit.\n\t    // No leading plus sign is allowed.)\n\t    // https://html.spec.whatwg.org/multipage/infrastructure.html#valid-floating-point-number\n\t    regexFloatingPoint = /^-?(?:[0-9]+|[0-9]*\\.[0-9]+)(?:[eE][+-]?[0-9]+)?$/;\n\n\tvar on = function(obj, evt, fn, capture) {\n\t\tif ( obj.addEventListener ) {\n\t\t\tobj.addEventListener(evt, fn, capture || false);\n\t\t} else if ( obj.attachEvent ) {\n\t\t\tobj.attachEvent( \"on\" + evt, fn);\n\t\t}\n\t};\n\n\t/**\n\t * simple memoize function:\n\t */\n\n\tvar memoize = function(fn) {\n\t\tvar cache = {};\n\t\treturn function(input) {\n\t\t\tif ( !(input in cache) ) {\n\t\t\t\tcache[ input ] = fn(input);\n\t\t\t}\n\t\t\treturn cache[ input ];\n\t\t};\n\t};\n\n\t// UTILITY FUNCTIONS\n\n\t// Manual is faster than RegEx\n\t// http://jsperf.com/whitespace-character/5\n\tfunction isSpace(c) {\n\t\treturn (c === \"\\u0020\" || // space\n\t\t        c === \"\\u0009\" || // horizontal tab\n\t\t        c === \"\\u000A\" || // new line\n\t\t        c === \"\\u000C\" || // form feed\n\t\t        c === \"\\u000D\");  // carriage return\n\t}\n\n\t/**\n\t * gets a mediaquery and returns a boolean or gets a css length and returns a number\n\t * @param css mediaqueries or css length\n\t * @returns {boolean|number}\n\t *\n\t * based on: https://gist.github.com/jonathantneal/db4f77009b155f083738\n\t */\n\tvar evalCSS = (function() {\n\n\t\tvar regLength = /^([\\d\\.]+)(em|vw|px)$/;\n\t\tvar replace = function() {\n\t\t\tvar args = arguments, index = 0, string = args[0];\n\t\t\twhile (++index in args) {\n\t\t\t\tstring = string.replace(args[index], args[++index]);\n\t\t\t}\n\t\t\treturn string;\n\t\t};\n\n\t\tvar buildStr = memoize(function(css) {\n\n\t\t\treturn \"return \" + replace((css || \"\").toLowerCase(),\n\t\t\t\t// interpret `and`\n\t\t\t\t/\\band\\b/g, \"&&\",\n\n\t\t\t\t// interpret `,`\n\t\t\t\t/,/g, \"||\",\n\n\t\t\t\t// interpret `min-` as >=\n\t\t\t\t/min-([a-z-\\s]+):/g, \"e.$1>=\",\n\n\t\t\t\t// interpret `max-` as <=\n\t\t\t\t/max-([a-z-\\s]+):/g, \"e.$1<=\",\n\n\t\t\t\t//calc value\n\t\t\t\t/calc([^)]+)/g, \"($1)\",\n\n\t\t\t\t// interpret css values\n\t\t\t\t/(\\d+[\\.]*[\\d]*)([a-z]+)/g, \"($1 * e.$2)\",\n\t\t\t\t//make eval less evil\n\t\t\t\t/^(?!(e.[a-z]|[0-9\\.&=|><\\+\\-\\*\\(\\)\\/])).*/ig, \"\"\n\t\t\t) + \";\";\n\t\t});\n\n\t\treturn function(css, length) {\n\t\t\tvar parsedLength;\n\t\t\tif (!(css in cssCache)) {\n\t\t\t\tcssCache[css] = false;\n\t\t\t\tif (length && (parsedLength = css.match( regLength ))) {\n\t\t\t\t\tcssCache[css] = parsedLength[ 1 ] * units[parsedLength[ 2 ]];\n\t\t\t\t} else {\n\t\t\t\t\t/*jshint evil:true */\n\t\t\t\t\ttry{\n\t\t\t\t\t\tcssCache[css] = new Function(\"e\", buildStr(css))(units);\n\t\t\t\t\t} catch(e) {}\n\t\t\t\t\t/*jshint evil:false */\n\t\t\t\t}\n\t\t\t}\n\t\t\treturn cssCache[css];\n\t\t};\n\t})();\n\n\tvar setResolution = function( candidate, sizesattr ) {\n\t\tif ( candidate.w ) { // h = means height: || descriptor.type === 'h' do not handle yet...\n\t\t\tcandidate.cWidth = pf.calcListLength( sizesattr || \"100vw\" );\n\t\t\tcandidate.res = candidate.w / candidate.cWidth ;\n\t\t} else {\n\t\t\tcandidate.res = candidate.d;\n\t\t}\n\t\treturn candidate;\n\t};\n\n\t/**\n\t *\n\t * @param opt\n\t */\n\tvar picturefill = function( opt ) {\n\n\t\tif (!isSupportTestReady) {return;}\n\n\t\tvar elements, i, plen;\n\n\t\tvar options = opt || {};\n\n\t\tif ( options.elements && options.elements.nodeType === 1 ) {\n\t\t\tif ( options.elements.nodeName.toUpperCase() === \"IMG\" ) {\n\t\t\t\toptions.elements =  [ options.elements ];\n\t\t\t} else {\n\t\t\t\toptions.context = options.elements;\n\t\t\t\toptions.elements =  null;\n\t\t\t}\n\t\t}\n\n\t\telements = options.elements || pf.qsa( (options.context || document), ( options.reevaluate || options.reselect ) ? pf.sel : pf.selShort );\n\n\t\tif ( (plen = elements.length) ) {\n\n\t\t\tpf.setupRun( options );\n\t\t\talreadyRun = true;\n\n\t\t\t// Loop through all elements\n\t\t\tfor ( i = 0; i < plen; i++ ) {\n\t\t\t\tpf.fillImg(elements[ i ], options);\n\t\t\t}\n\n\t\t\tpf.teardownRun( options );\n\t\t}\n\t};\n\n\t/**\n\t * outputs a warning for the developer\n\t * @param {message}\n\t * @type {Function}\n\t */\n\twarn = ( window.console && console.warn ) ?\n\t\tfunction( message ) {\n\t\t\tconsole.warn( message );\n\t\t} :\n\t\tnoop\n\t;\n\n\tif ( !(curSrcProp in image) ) {\n\t\tcurSrcProp = \"src\";\n\t}\n\n\t// Add support for standard mime types.\n\ttypes[ \"image/jpeg\" ] = true;\n\ttypes[ \"image/gif\" ] = true;\n\ttypes[ \"image/png\" ] = true;\n\n\tfunction detectTypeSupport( type, typeUri ) {\n\t\t// based on Modernizr's lossless img-webp test\n\t\t// note: asynchronous\n\t\tvar image = new window.Image();\n\t\timage.onerror = function() {\n\t\t\ttypes[ type ] = false;\n\t\t\tpicturefill();\n\t\t};\n\t\timage.onload = function() {\n\t\t\ttypes[ type ] = image.width === 1;\n\t\t\tpicturefill();\n\t\t};\n\t\timage.src = typeUri;\n\t\treturn \"pending\";\n\t}\n\n\t// test svg support\n\ttypes[ \"image/svg+xml\" ] = document.implementation.hasFeature( \"http://www.w3.org/TR/SVG11/feature#Image\", \"1.1\" );\n\n\t/**\n\t * updates the internal vW property with the current viewport width in px\n\t */\n\tfunction updateMetrics() {\n\n\t\tisVwDirty = false;\n\t\tDPR = window.devicePixelRatio;\n\t\tcssCache = {};\n\t\tsizeLengthCache = {};\n\n\t\tpf.DPR = DPR || 1;\n\n\t\tunits.width = Math.max(window.innerWidth || 0, docElem.clientWidth);\n\t\tunits.height = Math.max(window.innerHeight || 0, docElem.clientHeight);\n\n\t\tunits.vw = units.width / 100;\n\t\tunits.vh = units.height / 100;\n\n\t\tevalId = [ units.height, units.width, DPR ].join(\"-\");\n\n\t\tunits.em = pf.getEmValue();\n\t\tunits.rem = units.em;\n\t}\n\n\tfunction chooseLowRes( lowerValue, higherValue, dprValue, isCached ) {\n\t\tvar bonusFactor, tooMuch, bonus, meanDensity;\n\n\t\t//experimental\n\t\tif (cfg.algorithm === \"saveData\" ){\n\t\t\tif ( lowerValue > 2.7 ) {\n\t\t\t\tmeanDensity = dprValue + 1;\n\t\t\t} else {\n\t\t\t\ttooMuch = higherValue - dprValue;\n\t\t\t\tbonusFactor = Math.pow(lowerValue - 0.6, 1.5);\n\n\t\t\t\tbonus = tooMuch * bonusFactor;\n\n\t\t\t\tif (isCached) {\n\t\t\t\t\tbonus += 0.1 * bonusFactor;\n\t\t\t\t}\n\n\t\t\t\tmeanDensity = lowerValue + bonus;\n\t\t\t}\n\t\t} else {\n\t\t\tmeanDensity = (dprValue > 1) ?\n\t\t\t\tMath.sqrt(lowerValue * higherValue) :\n\t\t\t\tlowerValue;\n\t\t}\n\n\t\treturn meanDensity > dprValue;\n\t}\n\n\tfunction applyBestCandidate( img ) {\n\t\tvar srcSetCandidates;\n\t\tvar matchingSet = pf.getSet( img );\n\t\tvar evaluated = false;\n\t\tif ( matchingSet !== \"pending\" ) {\n\t\t\tevaluated = evalId;\n\t\t\tif ( matchingSet ) {\n\t\t\t\tsrcSetCandidates = pf.setRes( matchingSet );\n\t\t\t\tpf.applySetCandidate( srcSetCandidates, img );\n\t\t\t}\n\t\t}\n\t\timg[ pf.ns ].evaled = evaluated;\n\t}\n\n\tfunction ascendingSort( a, b ) {\n\t\treturn a.res - b.res;\n\t}\n\n\tfunction setSrcToCur( img, src, set ) {\n\t\tvar candidate;\n\t\tif ( !set && src ) {\n\t\t\tset = img[ pf.ns ].sets;\n\t\t\tset = set && set[set.length - 1];\n\t\t}\n\n\t\tcandidate = getCandidateForSrc(src, set);\n\n\t\tif ( candidate ) {\n\t\t\tsrc = pf.makeUrl(src);\n\t\t\timg[ pf.ns ].curSrc = src;\n\t\t\timg[ pf.ns ].curCan = candidate;\n\n\t\t\tif ( !candidate.res ) {\n\t\t\t\tsetResolution( candidate, candidate.set.sizes );\n\t\t\t}\n\t\t}\n\t\treturn candidate;\n\t}\n\n\tfunction getCandidateForSrc( src, set ) {\n\t\tvar i, candidate, candidates;\n\t\tif ( src && set ) {\n\t\t\tcandidates = pf.parseSet( set );\n\t\t\tsrc = pf.makeUrl(src);\n\t\t\tfor ( i = 0; i < candidates.length; i++ ) {\n\t\t\t\tif ( src === pf.makeUrl(candidates[ i ].url) ) {\n\t\t\t\t\tcandidate = candidates[ i ];\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t\treturn candidate;\n\t}\n\n\tfunction getAllSourceElements( picture, candidates ) {\n\t\tvar i, len, source, srcset;\n\n\t\t// SPEC mismatch intended for size and perf:\n\t\t// actually only source elements preceding the img should be used\n\t\t// also note: don't use qsa here, because IE8 sometimes doesn't like source as the key part in a selector\n\t\tvar sources = picture.getElementsByTagName( \"source\" );\n\n\t\tfor ( i = 0, len = sources.length; i < len; i++ ) {\n\t\t\tsource = sources[ i ];\n\t\t\tsource[ pf.ns ] = true;\n\t\t\tsrcset = source.getAttribute( \"srcset\" );\n\n\t\t\t// if source does not have a srcset attribute, skip\n\t\t\tif ( srcset ) {\n\t\t\t\tcandidates.push( {\n\t\t\t\t\tsrcset: srcset,\n\t\t\t\t\tmedia: source.getAttribute( \"media\" ),\n\t\t\t\t\ttype: source.getAttribute( \"type\" ),\n\t\t\t\t\tsizes: source.getAttribute( \"sizes\" )\n\t\t\t\t} );\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Srcset Parser\n\t * By Alex Bell |  MIT License\n\t *\n\t * @returns Array [{url: _, d: _, w: _, h:_, set:_(????)}, ...]\n\t *\n\t * Based super duper closely on the reference algorithm at:\n\t * https://html.spec.whatwg.org/multipage/embedded-content.html#parse-a-srcset-attribute\n\t */\n\n\t// 1. Let input be the value passed to this algorithm.\n\t// (TO-DO : Explain what \"set\" argument is here. Maybe choose a more\n\t// descriptive & more searchable name.  Since passing the \"set\" in really has\n\t// nothing to do with parsing proper, I would prefer this assignment eventually\n\t// go in an external fn.)\n\tfunction parseSrcset(input, set) {\n\n\t\tfunction collectCharacters(regEx) {\n\t\t\tvar chars,\n\t\t\t    match = regEx.exec(input.substring(pos));\n\t\t\tif (match) {\n\t\t\t\tchars = match[ 0 ];\n\t\t\t\tpos += chars.length;\n\t\t\t\treturn chars;\n\t\t\t}\n\t\t}\n\n\t\tvar inputLength = input.length,\n\t\t    url,\n\t\t    descriptors,\n\t\t    currentDescriptor,\n\t\t    state,\n\t\t    c,\n\n\t\t    // 2. Let position be a pointer into input, initially pointing at the start\n\t\t    //    of the string.\n\t\t    pos = 0,\n\n\t\t    // 3. Let candidates be an initially empty source set.\n\t\t    candidates = [];\n\n\t\t/**\n\t\t* Adds descriptor properties to a candidate, pushes to the candidates array\n\t\t* @return undefined\n\t\t*/\n\t\t// (Declared outside of the while loop so that it's only created once.\n\t\t// (This fn is defined before it is used, in order to pass JSHINT.\n\t\t// Unfortunately this breaks the sequencing of the spec comments. :/ )\n\t\tfunction parseDescriptors() {\n\n\t\t\t// 9. Descriptor parser: Let error be no.\n\t\t\tvar pError = false,\n\n\t\t\t// 10. Let width be absent.\n\t\t\t// 11. Let density be absent.\n\t\t\t// 12. Let future-compat-h be absent. (We're implementing it now as h)\n\t\t\t    w, d, h, i,\n\t\t\t    candidate = {},\n\t\t\t    desc, lastChar, value, intVal, floatVal;\n\n\t\t\t// 13. For each descriptor in descriptors, run the appropriate set of steps\n\t\t\t// from the following list:\n\t\t\tfor (i = 0 ; i < descriptors.length; i++) {\n\t\t\t\tdesc = descriptors[ i ];\n\n\t\t\t\tlastChar = desc[ desc.length - 1 ];\n\t\t\t\tvalue = desc.substring(0, desc.length - 1);\n\t\t\t\tintVal = parseInt(value, 10);\n\t\t\t\tfloatVal = parseFloat(value);\n\n\t\t\t\t// If the descriptor consists of a valid non-negative integer followed by\n\t\t\t\t// a U+0077 LATIN SMALL LETTER W character\n\t\t\t\tif (regexNonNegativeInteger.test(value) && (lastChar === \"w\")) {\n\n\t\t\t\t\t// If width and density are not both absent, then let error be yes.\n\t\t\t\t\tif (w || d) {pError = true;}\n\n\t\t\t\t\t// Apply the rules for parsing non-negative integers to the descriptor.\n\t\t\t\t\t// If the result is zero, let error be yes.\n\t\t\t\t\t// Otherwise, let width be the result.\n\t\t\t\t\tif (intVal === 0) {pError = true;} else {w = intVal;}\n\n\t\t\t\t// If the descriptor consists of a valid floating-point number followed by\n\t\t\t\t// a U+0078 LATIN SMALL LETTER X character\n\t\t\t\t} else if (regexFloatingPoint.test(value) && (lastChar === \"x\")) {\n\n\t\t\t\t\t// If width, density and future-compat-h are not all absent, then let error\n\t\t\t\t\t// be yes.\n\t\t\t\t\tif (w || d || h) {pError = true;}\n\n\t\t\t\t\t// Apply the rules for parsing floating-point number values to the descriptor.\n\t\t\t\t\t// If the result is less than zero, let error be yes. Otherwise, let density\n\t\t\t\t\t// be the result.\n\t\t\t\t\tif (floatVal < 0) {pError = true;} else {d = floatVal;}\n\n\t\t\t\t// If the descriptor consists of a valid non-negative integer followed by\n\t\t\t\t// a U+0068 LATIN SMALL LETTER H character\n\t\t\t\t} else if (regexNonNegativeInteger.test(value) && (lastChar === \"h\")) {\n\n\t\t\t\t\t// If height and density are not both absent, then let error be yes.\n\t\t\t\t\tif (h || d) {pError = true;}\n\n\t\t\t\t\t// Apply the rules for parsing non-negative integers to the descriptor.\n\t\t\t\t\t// If the result is zero, let error be yes. Otherwise, let future-compat-h\n\t\t\t\t\t// be the result.\n\t\t\t\t\tif (intVal === 0) {pError = true;} else {h = intVal;}\n\n\t\t\t\t// Anything else, Let error be yes.\n\t\t\t\t} else {pError = true;}\n\t\t\t} // (close step 13 for loop)\n\n\t\t\t// 15. If error is still no, then append a new image source to candidates whose\n\t\t\t// URL is url, associated with a width width if not absent and a pixel\n\t\t\t// density density if not absent. Otherwise, there is a parse error.\n\t\t\tif (!pError) {\n\t\t\t\tcandidate.url = url;\n\n\t\t\t\tif (w) { candidate.w = w;}\n\t\t\t\tif (d) { candidate.d = d;}\n\t\t\t\tif (h) { candidate.h = h;}\n\t\t\t\tif (!h && !d && !w) {candidate.d = 1;}\n\t\t\t\tif (candidate.d === 1) {set.has1x = true;}\n\t\t\t\tcandidate.set = set;\n\n\t\t\t\tcandidates.push(candidate);\n\t\t\t}\n\t\t} // (close parseDescriptors fn)\n\n\t\t/**\n\t\t* Tokenizes descriptor properties prior to parsing\n\t\t* Returns undefined.\n\t\t* (Again, this fn is defined before it is used, in order to pass JSHINT.\n\t\t* Unfortunately this breaks the logical sequencing of the spec comments. :/ )\n\t\t*/\n\t\tfunction tokenize() {\n\n\t\t\t// 8.1. Descriptor tokeniser: Skip whitespace\n\t\t\tcollectCharacters(regexLeadingSpaces);\n\n\t\t\t// 8.2. Let current descriptor be the empty string.\n\t\t\tcurrentDescriptor = \"\";\n\n\t\t\t// 8.3. Let state be in descriptor.\n\t\t\tstate = \"in descriptor\";\n\n\t\t\twhile (true) {\n\n\t\t\t\t// 8.4. Let c be the character at position.\n\t\t\t\tc = input.charAt(pos);\n\n\t\t\t\t//  Do the following depending on the value of state.\n\t\t\t\t//  For the purpose of this step, \"EOF\" is a special character representing\n\t\t\t\t//  that position is past the end of input.\n\n\t\t\t\t// In descriptor\n\t\t\t\tif (state === \"in descriptor\") {\n\t\t\t\t\t// Do the following, depending on the value of c:\n\n\t\t\t\t  // Space character\n\t\t\t\t  // If current descriptor is not empty, append current descriptor to\n\t\t\t\t  // descriptors and let current descriptor be the empty string.\n\t\t\t\t  // Set state to after descriptor.\n\t\t\t\t\tif (isSpace(c)) {\n\t\t\t\t\t\tif (currentDescriptor) {\n\t\t\t\t\t\t\tdescriptors.push(currentDescriptor);\n\t\t\t\t\t\t\tcurrentDescriptor = \"\";\n\t\t\t\t\t\t\tstate = \"after descriptor\";\n\t\t\t\t\t\t}\n\n\t\t\t\t\t// U+002C COMMA (,)\n\t\t\t\t\t// Advance position to the next character in input. If current descriptor\n\t\t\t\t\t// is not empty, append current descriptor to descriptors. Jump to the step\n\t\t\t\t\t// labeled descriptor parser.\n\t\t\t\t\t} else if (c === \",\") {\n\t\t\t\t\t\tpos += 1;\n\t\t\t\t\t\tif (currentDescriptor) {\n\t\t\t\t\t\t\tdescriptors.push(currentDescriptor);\n\t\t\t\t\t\t}\n\t\t\t\t\t\tparseDescriptors();\n\t\t\t\t\t\treturn;\n\n\t\t\t\t\t// U+0028 LEFT PARENTHESIS (()\n\t\t\t\t\t// Append c to current descriptor. Set state to in parens.\n\t\t\t\t\t} else if (c === \"\\u0028\") {\n\t\t\t\t\t\tcurrentDescriptor = currentDescriptor + c;\n\t\t\t\t\t\tstate = \"in parens\";\n\n\t\t\t\t\t// EOF\n\t\t\t\t\t// If current descriptor is not empty, append current descriptor to\n\t\t\t\t\t// descriptors. Jump to the step labeled descriptor parser.\n\t\t\t\t\t} else if (c === \"\") {\n\t\t\t\t\t\tif (currentDescriptor) {\n\t\t\t\t\t\t\tdescriptors.push(currentDescriptor);\n\t\t\t\t\t\t}\n\t\t\t\t\t\tparseDescriptors();\n\t\t\t\t\t\treturn;\n\n\t\t\t\t\t// Anything else\n\t\t\t\t\t// Append c to current descriptor.\n\t\t\t\t\t} else {\n\t\t\t\t\t\tcurrentDescriptor = currentDescriptor + c;\n\t\t\t\t\t}\n\t\t\t\t// (end \"in descriptor\"\n\n\t\t\t\t// In parens\n\t\t\t\t} else if (state === \"in parens\") {\n\n\t\t\t\t\t// U+0029 RIGHT PARENTHESIS ())\n\t\t\t\t\t// Append c to current descriptor. Set state to in descriptor.\n\t\t\t\t\tif (c === \")\") {\n\t\t\t\t\t\tcurrentDescriptor = currentDescriptor + c;\n\t\t\t\t\t\tstate = \"in descriptor\";\n\n\t\t\t\t\t// EOF\n\t\t\t\t\t// Append current descriptor to descriptors. Jump to the step labeled\n\t\t\t\t\t// descriptor parser.\n\t\t\t\t\t} else if (c === \"\") {\n\t\t\t\t\t\tdescriptors.push(currentDescriptor);\n\t\t\t\t\t\tparseDescriptors();\n\t\t\t\t\t\treturn;\n\n\t\t\t\t\t// Anything else\n\t\t\t\t\t// Append c to current descriptor.\n\t\t\t\t\t} else {\n\t\t\t\t\t\tcurrentDescriptor = currentDescriptor + c;\n\t\t\t\t\t}\n\n\t\t\t\t// After descriptor\n\t\t\t\t} else if (state === \"after descriptor\") {\n\n\t\t\t\t\t// Do the following, depending on the value of c:\n\t\t\t\t\t// Space character: Stay in this state.\n\t\t\t\t\tif (isSpace(c)) {\n\n\t\t\t\t\t// EOF: Jump to the step labeled descriptor parser.\n\t\t\t\t\t} else if (c === \"\") {\n\t\t\t\t\t\tparseDescriptors();\n\t\t\t\t\t\treturn;\n\n\t\t\t\t\t// Anything else\n\t\t\t\t\t// Set state to in descriptor. Set position to the previous character in input.\n\t\t\t\t\t} else {\n\t\t\t\t\t\tstate = \"in descriptor\";\n\t\t\t\t\t\tpos -= 1;\n\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\t// Advance position to the next character in input.\n\t\t\t\tpos += 1;\n\n\t\t\t// Repeat this step.\n\t\t\t} // (close while true loop)\n\t\t}\n\n\t\t// 4. Splitting loop: Collect a sequence of characters that are space\n\t\t//    characters or U+002C COMMA characters. If any U+002C COMMA characters\n\t\t//    were collected, that is a parse error.\n\t\twhile (true) {\n\t\t\tcollectCharacters(regexLeadingCommasOrSpaces);\n\n\t\t\t// 5. If position is past the end of input, return candidates and abort these steps.\n\t\t\tif (pos >= inputLength) {\n\t\t\t\treturn candidates; // (we're done, this is the sole return path)\n\t\t\t}\n\n\t\t\t// 6. Collect a sequence of characters that are not space characters,\n\t\t\t//    and let that be url.\n\t\t\turl = collectCharacters(regexLeadingNotSpaces);\n\n\t\t\t// 7. Let descriptors be a new empty list.\n\t\t\tdescriptors = [];\n\n\t\t\t// 8. If url ends with a U+002C COMMA character (,), follow these substeps:\n\t\t\t//\t\t(1). Remove all trailing U+002C COMMA characters from url. If this removed\n\t\t\t//         more than one character, that is a parse error.\n\t\t\tif (url.slice(-1) === \",\") {\n\t\t\t\turl = url.replace(regexTrailingCommas, \"\");\n\t\t\t\t// (Jump ahead to step 9 to skip tokenization and just push the candidate).\n\t\t\t\tparseDescriptors();\n\n\t\t\t//\tOtherwise, follow these substeps:\n\t\t\t} else {\n\t\t\t\ttokenize();\n\t\t\t} // (close else of step 8)\n\n\t\t// 16. Return to the step labeled splitting loop.\n\t\t} // (Close of big while loop.)\n\t}\n\n\t/*\n\t * Sizes Parser\n\t *\n\t * By Alex Bell |  MIT License\n\t *\n\t * Non-strict but accurate and lightweight JS Parser for the string value <img sizes=\"here\">\n\t *\n\t * Reference algorithm at:\n\t * https://html.spec.whatwg.org/multipage/embedded-content.html#parse-a-sizes-attribute\n\t *\n\t * Most comments are copied in directly from the spec\n\t * (except for comments in parens).\n\t *\n\t * Grammar is:\n\t * <source-size-list> = <source-size># [ , <source-size-value> ]? | <source-size-value>\n\t * <source-size> = <media-condition> <source-size-value>\n\t * <source-size-value> = <length>\n\t * http://www.w3.org/html/wg/drafts/html/master/embedded-content.html#attr-img-sizes\n\t *\n\t * E.g. \"(max-width: 30em) 100vw, (max-width: 50em) 70vw, 100vw\"\n\t * or \"(min-width: 30em), calc(30vw - 15px)\" or just \"30vw\"\n\t *\n\t * Returns the first valid <css-length> with a media condition that evaluates to true,\n\t * or \"100vw\" if all valid media conditions evaluate to false.\n\t *\n\t */\n\n\tfunction parseSizes(strValue) {\n\n\t\t// (Percentage CSS lengths are not allowed in this case, to avoid confusion:\n\t\t// https://html.spec.whatwg.org/multipage/embedded-content.html#valid-source-size-list\n\t\t// CSS allows a single optional plus or minus sign:\n\t\t// http://www.w3.org/TR/CSS2/syndata.html#numbers\n\t\t// CSS is ASCII case-insensitive:\n\t\t// http://www.w3.org/TR/CSS2/syndata.html#characters )\n\t\t// Spec allows exponential notation for <number> type:\n\t\t// http://dev.w3.org/csswg/css-values/#numbers\n\t\tvar regexCssLengthWithUnits = /^(?:[+-]?[0-9]+|[0-9]*\\.[0-9]+)(?:[eE][+-]?[0-9]+)?(?:ch|cm|em|ex|in|mm|pc|pt|px|rem|vh|vmin|vmax|vw)$/i;\n\n\t\t// (This is a quick and lenient test. Because of optional unlimited-depth internal\n\t\t// grouping parens and strict spacing rules, this could get very complicated.)\n\t\tvar regexCssCalc = /^calc\\((?:[0-9a-z \\.\\+\\-\\*\\/\\(\\)]+)\\)$/i;\n\n\t\tvar i;\n\t\tvar unparsedSizesList;\n\t\tvar unparsedSizesListLength;\n\t\tvar unparsedSize;\n\t\tvar lastComponentValue;\n\t\tvar size;\n\n\t\t// UTILITY FUNCTIONS\n\n\t\t//  (Toy CSS parser. The goals here are:\n\t\t//  1) expansive test coverage without the weight of a full CSS parser.\n\t\t//  2) Avoiding regex wherever convenient.\n\t\t//  Quick tests: http://jsfiddle.net/gtntL4gr/3/\n\t\t//  Returns an array of arrays.)\n\t\tfunction parseComponentValues(str) {\n\t\t\tvar chrctr;\n\t\t\tvar component = \"\";\n\t\t\tvar componentArray = [];\n\t\t\tvar listArray = [];\n\t\t\tvar parenDepth = 0;\n\t\t\tvar pos = 0;\n\t\t\tvar inComment = false;\n\n\t\t\tfunction pushComponent() {\n\t\t\t\tif (component) {\n\t\t\t\t\tcomponentArray.push(component);\n\t\t\t\t\tcomponent = \"\";\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tfunction pushComponentArray() {\n\t\t\t\tif (componentArray[0]) {\n\t\t\t\t\tlistArray.push(componentArray);\n\t\t\t\t\tcomponentArray = [];\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// (Loop forwards from the beginning of the string.)\n\t\t\twhile (true) {\n\t\t\t\tchrctr = str.charAt(pos);\n\n\t\t\t\tif (chrctr === \"\") { // ( End of string reached.)\n\t\t\t\t\tpushComponent();\n\t\t\t\t\tpushComponentArray();\n\t\t\t\t\treturn listArray;\n\t\t\t\t} else if (inComment) {\n\t\t\t\t\tif ((chrctr === \"*\") && (str[pos + 1] === \"/\")) { // (At end of a comment.)\n\t\t\t\t\t\tinComment = false;\n\t\t\t\t\t\tpos += 2;\n\t\t\t\t\t\tpushComponent();\n\t\t\t\t\t\tcontinue;\n\t\t\t\t\t} else {\n\t\t\t\t\t\tpos += 1; // (Skip all characters inside comments.)\n\t\t\t\t\t\tcontinue;\n\t\t\t\t\t}\n\t\t\t\t} else if (isSpace(chrctr)) {\n\t\t\t\t\t// (If previous character in loop was also a space, or if\n\t\t\t\t\t// at the beginning of the string, do not add space char to\n\t\t\t\t\t// component.)\n\t\t\t\t\tif ( (str.charAt(pos - 1) && isSpace( str.charAt(pos - 1) ) ) || !component ) {\n\t\t\t\t\t\tpos += 1;\n\t\t\t\t\t\tcontinue;\n\t\t\t\t\t} else if (parenDepth === 0) {\n\t\t\t\t\t\tpushComponent();\n\t\t\t\t\t\tpos +=1;\n\t\t\t\t\t\tcontinue;\n\t\t\t\t\t} else {\n\t\t\t\t\t\t// (Replace any space character with a plain space for legibility.)\n\t\t\t\t\t\tchrctr = \" \";\n\t\t\t\t\t}\n\t\t\t\t} else if (chrctr === \"(\") {\n\t\t\t\t\tparenDepth += 1;\n\t\t\t\t} else if (chrctr === \")\") {\n\t\t\t\t\tparenDepth -= 1;\n\t\t\t\t} else if (chrctr === \",\") {\n\t\t\t\t\tpushComponent();\n\t\t\t\t\tpushComponentArray();\n\t\t\t\t\tpos += 1;\n\t\t\t\t\tcontinue;\n\t\t\t\t} else if ( (chrctr === \"/\") && (str.charAt(pos + 1) === \"*\") ) {\n\t\t\t\t\tinComment = true;\n\t\t\t\t\tpos += 2;\n\t\t\t\t\tcontinue;\n\t\t\t\t}\n\n\t\t\t\tcomponent = component + chrctr;\n\t\t\t\tpos += 1;\n\t\t\t}\n\t\t}\n\n\t\tfunction isValidNonNegativeSourceSizeValue(s) {\n\t\t\tif (regexCssLengthWithUnits.test(s) && (parseFloat(s) >= 0)) {return true;}\n\t\t\tif (regexCssCalc.test(s)) {return true;}\n\t\t\t// ( http://www.w3.org/TR/CSS2/syndata.html#numbers says:\n\t\t\t// \"-0 is equivalent to 0 and is not a negative number.\" which means that\n\t\t\t// unitless zero and unitless negative zero must be accepted as special cases.)\n\t\t\tif ((s === \"0\") || (s === \"-0\") || (s === \"+0\")) {return true;}\n\t\t\treturn false;\n\t\t}\n\n\t\t// When asked to parse a sizes attribute from an element, parse a\n\t\t// comma-separated list of component values from the value of the element's\n\t\t// sizes attribute (or the empty string, if the attribute is absent), and let\n\t\t// unparsed sizes list be the result.\n\t\t// http://dev.w3.org/csswg/css-syntax/#parse-comma-separated-list-of-component-values\n\n\t\tunparsedSizesList = parseComponentValues(strValue);\n\t\tunparsedSizesListLength = unparsedSizesList.length;\n\n\t\t// For each unparsed size in unparsed sizes list:\n\t\tfor (i = 0; i < unparsedSizesListLength; i++) {\n\t\t\tunparsedSize = unparsedSizesList[i];\n\n\t\t\t// 1. Remove all consecutive <whitespace-token>s from the end of unparsed size.\n\t\t\t// ( parseComponentValues() already omits spaces outside of parens. )\n\n\t\t\t// If unparsed size is now empty, that is a parse error; continue to the next\n\t\t\t// iteration of this algorithm.\n\t\t\t// ( parseComponentValues() won't push an empty array. )\n\n\t\t\t// 2. If the last component value in unparsed size is a valid non-negative\n\t\t\t// <source-size-value>, let size be its value and remove the component value\n\t\t\t// from unparsed size. Any CSS function other than the calc() function is\n\t\t\t// invalid. Otherwise, there is a parse error; continue to the next iteration\n\t\t\t// of this algorithm.\n\t\t\t// http://dev.w3.org/csswg/css-syntax/#parse-component-value\n\t\t\tlastComponentValue = unparsedSize[unparsedSize.length - 1];\n\n\t\t\tif (isValidNonNegativeSourceSizeValue(lastComponentValue)) {\n\t\t\t\tsize = lastComponentValue;\n\t\t\t\tunparsedSize.pop();\n\t\t\t} else {\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\t// 3. Remove all consecutive <whitespace-token>s from the end of unparsed\n\t\t\t// size. If unparsed size is now empty, return size and exit this algorithm.\n\t\t\t// If this was not the last item in unparsed sizes list, that is a parse error.\n\t\t\tif (unparsedSize.length === 0) {\n\t\t\t\treturn size;\n\t\t\t}\n\n\t\t\t// 4. Parse the remaining component values in unparsed size as a\n\t\t\t// <media-condition>. If it does not parse correctly, or it does parse\n\t\t\t// correctly but the <media-condition> evaluates to false, continue to the\n\t\t\t// next iteration of this algorithm.\n\t\t\t// (Parsing all possible compound media conditions in JS is heavy, complicated,\n\t\t\t// and the payoff is unclear. Is there ever an situation where the\n\t\t\t// media condition parses incorrectly but still somehow evaluates to true?\n\t\t\t// Can we just rely on the browser/polyfill to do it?)\n\t\t\tunparsedSize = unparsedSize.join(\" \");\n\t\t\tif (!(pf.matchesMedia( unparsedSize ) ) ) {\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\t// 5. Return size and exit this algorithm.\n\t\t\treturn size;\n\t\t}\n\n\t\t// If the above algorithm exhausts unparsed sizes list without returning a\n\t\t// size value, return 100vw.\n\t\treturn \"100vw\";\n\t}\n\n\t// namespace\n\tpf.ns = (\"pf\" + new Date().getTime()).substr(0, 9);\n\n\t// srcset support test\n\tpf.supSrcset = \"srcset\" in image;\n\tpf.supSizes = \"sizes\" in image;\n\tpf.supPicture = !!window.HTMLPictureElement;\n\n\t// UC browser does claim to support srcset and picture, but not sizes,\n\t// this extended test reveals the browser does support nothing\n\tif (pf.supSrcset && pf.supPicture && !pf.supSizes) {\n\t\t(function(image2) {\n\t\t\timage.srcset = \"data:,a\";\n\t\t\timage2.src = \"data:,a\";\n\t\t\tpf.supSrcset = image.complete === image2.complete;\n\t\t\tpf.supPicture = pf.supSrcset && pf.supPicture;\n\t\t})(document.createElement(\"img\"));\n\t}\n\n\t// Safari9 has basic support for sizes, but does't expose the `sizes` idl attribute\n\tif (pf.supSrcset && !pf.supSizes) {\n\n\t\t(function() {\n\t\t\tvar width2 = \"data:image/gif;base64,R0lGODlhAgABAPAAAP///wAAACH5BAAAAAAALAAAAAACAAEAAAICBAoAOw==\";\n\t\t\tvar width1 = \"data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\";\n\t\t\tvar img = document.createElement(\"img\");\n\t\t\tvar test = function() {\n\t\t\t\tvar width = img.width;\n\n\t\t\t\tif (width === 2) {\n\t\t\t\t\tpf.supSizes = true;\n\t\t\t\t}\n\n\t\t\t\talwaysCheckWDescriptor = pf.supSrcset && !pf.supSizes;\n\n\t\t\t\tisSupportTestReady = true;\n\t\t\t\t// force async\n\t\t\t\tsetTimeout(picturefill);\n\t\t\t};\n\n\t\t\timg.onload = test;\n\t\t\timg.onerror = test;\n\t\t\timg.setAttribute(\"sizes\", \"9px\");\n\n\t\t\timg.srcset = width1 + \" 1w,\" + width2 + \" 9w\";\n\t\t\timg.src = width1;\n\t\t})();\n\n\t} else {\n\t\tisSupportTestReady = true;\n\t}\n\n\t// using pf.qsa instead of dom traversing does scale much better,\n\t// especially on sites mixing responsive and non-responsive images\n\tpf.selShort = \"picture>img,img[srcset]\";\n\tpf.sel = pf.selShort;\n\tpf.cfg = cfg;\n\n\t/**\n\t * Shortcut property for `devicePixelRatio` ( for easy overriding in tests )\n\t */\n\tpf.DPR = (DPR  || 1 );\n\tpf.u = units;\n\n\t// container of supported mime types that one might need to qualify before using\n\tpf.types =  types;\n\n\tpf.setSize = noop;\n\n\t/**\n\t * Gets a string and returns the absolute URL\n\t * @param src\n\t * @returns {String} absolute URL\n\t */\n\n\tpf.makeUrl = memoize(function(src) {\n\t\tanchor.href = src;\n\t\treturn anchor.href;\n\t});\n\n\t/**\n\t * Gets a DOM element or document and a selctor and returns the found matches\n\t * Can be extended with jQuery/Sizzle for IE7 support\n\t * @param context\n\t * @param sel\n\t * @returns {NodeList|Array}\n\t */\n\tpf.qsa = function(context, sel) {\n\t\treturn ( \"querySelector\" in context ) ? context.querySelectorAll(sel) : [];\n\t};\n\n\t/**\n\t * Shortcut method for matchMedia ( for easy overriding in tests )\n\t * wether native or pf.mMQ is used will be decided lazy on first call\n\t * @returns {boolean}\n\t */\n\tpf.matchesMedia = function() {\n\t\tif ( window.matchMedia && (matchMedia( \"(min-width: 0.1em)\" ) || {}).matches ) {\n\t\t\tpf.matchesMedia = function( media ) {\n\t\t\t\treturn !media || ( matchMedia( media ).matches );\n\t\t\t};\n\t\t} else {\n\t\t\tpf.matchesMedia = pf.mMQ;\n\t\t}\n\n\t\treturn pf.matchesMedia.apply( this, arguments );\n\t};\n\n\t/**\n\t * A simplified matchMedia implementation for IE8 and IE9\n\t * handles only min-width/max-width with px or em values\n\t * @param media\n\t * @returns {boolean}\n\t */\n\tpf.mMQ = function( media ) {\n\t\treturn media ? evalCSS(media) : true;\n\t};\n\n\t/**\n\t * Returns the calculated length in css pixel from the given sourceSizeValue\n\t * http://dev.w3.org/csswg/css-values-3/#length-value\n\t * intended Spec mismatches:\n\t * * Does not check for invalid use of CSS functions\n\t * * Does handle a computed length of 0 the same as a negative and therefore invalid value\n\t * @param sourceSizeValue\n\t * @returns {Number}\n\t */\n\tpf.calcLength = function( sourceSizeValue ) {\n\n\t\tvar value = evalCSS(sourceSizeValue, true) || false;\n\t\tif (value < 0) {\n\t\t\tvalue = false;\n\t\t}\n\n\t\treturn value;\n\t};\n\n\t/**\n\t * Takes a type string and checks if its supported\n\t */\n\n\tpf.supportsType = function( type ) {\n\t\treturn ( type ) ? types[ type ] : true;\n\t};\n\n\t/**\n\t * Parses a sourceSize into mediaCondition (media) and sourceSizeValue (length)\n\t * @param sourceSizeStr\n\t * @returns {*}\n\t */\n\tpf.parseSize = memoize(function( sourceSizeStr ) {\n\t\tvar match = ( sourceSizeStr || \"\" ).match(regSize);\n\t\treturn {\n\t\t\tmedia: match && match[1],\n\t\t\tlength: match && match[2]\n\t\t};\n\t});\n\n\tpf.parseSet = function( set ) {\n\t\tif ( !set.cands ) {\n\t\t\tset.cands = parseSrcset(set.srcset, set);\n\t\t}\n\t\treturn set.cands;\n\t};\n\n\t/**\n\t * returns 1em in css px for html/body default size\n\t * function taken from respondjs\n\t * @returns {*|number}\n\t */\n\tpf.getEmValue = function() {\n\t\tvar body;\n\t\tif ( !eminpx && (body = document.body) ) {\n\t\t\tvar div = document.createElement( \"div\" ),\n\t\t\t\toriginalHTMLCSS = docElem.style.cssText,\n\t\t\t\toriginalBodyCSS = body.style.cssText;\n\n\t\t\tdiv.style.cssText = baseStyle;\n\n\t\t\t// 1em in a media query is the value of the default font size of the browser\n\t\t\t// reset docElem and body to ensure the correct value is returned\n\t\t\tdocElem.style.cssText = fsCss;\n\t\t\tbody.style.cssText = fsCss;\n\n\t\t\tbody.appendChild( div );\n\t\t\teminpx = div.offsetWidth;\n\t\t\tbody.removeChild( div );\n\n\t\t\t//also update eminpx before returning\n\t\t\teminpx = parseFloat( eminpx, 10 );\n\n\t\t\t// restore the original values\n\t\t\tdocElem.style.cssText = originalHTMLCSS;\n\t\t\tbody.style.cssText = originalBodyCSS;\n\n\t\t}\n\t\treturn eminpx || 16;\n\t};\n\n\t/**\n\t * Takes a string of sizes and returns the width in pixels as a number\n\t */\n\tpf.calcListLength = function( sourceSizeListStr ) {\n\t\t// Split up source size list, ie ( max-width: 30em ) 100%, ( max-width: 50em ) 50%, 33%\n\t\t//\n\t\t//                           or (min-width:30em) calc(30% - 15px)\n\t\tif ( !(sourceSizeListStr in sizeLengthCache) || cfg.uT ) {\n\t\t\tvar winningLength = pf.calcLength( parseSizes( sourceSizeListStr ) );\n\n\t\t\tsizeLengthCache[ sourceSizeListStr ] = !winningLength ? units.width : winningLength;\n\t\t}\n\n\t\treturn sizeLengthCache[ sourceSizeListStr ];\n\t};\n\n\t/**\n\t * Takes a candidate object with a srcset property in the form of url/\n\t * ex. \"images/pic-medium.png 1x, images/pic-medium-2x.png 2x\" or\n\t *     \"images/pic-medium.png 400w, images/pic-medium-2x.png 800w\" or\n\t *     \"images/pic-small.png\"\n\t * Get an array of image candidates in the form of\n\t *      {url: \"/foo/bar.png\", resolution: 1}\n\t * where resolution is http://dev.w3.org/csswg/css-values-3/#resolution-value\n\t * If sizes is specified, res is calculated\n\t */\n\tpf.setRes = function( set ) {\n\t\tvar candidates;\n\t\tif ( set ) {\n\n\t\t\tcandidates = pf.parseSet( set );\n\n\t\t\tfor ( var i = 0, len = candidates.length; i < len; i++ ) {\n\t\t\t\tsetResolution( candidates[ i ], set.sizes );\n\t\t\t}\n\t\t}\n\t\treturn candidates;\n\t};\n\n\tpf.setRes.res = setResolution;\n\n\tpf.applySetCandidate = function( candidates, img ) {\n\t\tif ( !candidates.length ) {return;}\n\t\tvar candidate,\n\t\t\ti,\n\t\t\tj,\n\t\t\tlength,\n\t\t\tbestCandidate,\n\t\t\tcurSrc,\n\t\t\tcurCan,\n\t\t\tcandidateSrc,\n\t\t\tabortCurSrc;\n\n\t\tvar imageData = img[ pf.ns ];\n\t\tvar dpr = pf.DPR;\n\n\t\tcurSrc = imageData.curSrc || img[curSrcProp];\n\n\t\tcurCan = imageData.curCan || setSrcToCur(img, curSrc, candidates[0].set);\n\n\t\t// if we have a current source, we might either become lazy or give this source some advantage\n\t\tif ( curCan && curCan.set === candidates[ 0 ].set ) {\n\n\t\t\t// if browser can abort image request and the image has a higher pixel density than needed\n\t\t\t// and this image isn't downloaded yet, we skip next part and try to save bandwidth\n\t\t\tabortCurSrc = (supportAbort && !img.complete && curCan.res - 0.1 > dpr);\n\n\t\t\tif ( !abortCurSrc ) {\n\t\t\t\tcurCan.cached = true;\n\n\t\t\t\t// if current candidate is \"best\", \"better\" or \"okay\",\n\t\t\t\t// set it to bestCandidate\n\t\t\t\tif ( curCan.res >= dpr ) {\n\t\t\t\t\tbestCandidate = curCan;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\tif ( !bestCandidate ) {\n\n\t\t\tcandidates.sort( ascendingSort );\n\n\t\t\tlength = candidates.length;\n\t\t\tbestCandidate = candidates[ length - 1 ];\n\n\t\t\tfor ( i = 0; i < length; i++ ) {\n\t\t\t\tcandidate = candidates[ i ];\n\t\t\t\tif ( candidate.res >= dpr ) {\n\t\t\t\t\tj = i - 1;\n\n\t\t\t\t\t// we have found the perfect candidate,\n\t\t\t\t\t// but let's improve this a little bit with some assumptions ;-)\n\t\t\t\t\tif (candidates[ j ] &&\n\t\t\t\t\t\t(abortCurSrc || curSrc !== pf.makeUrl( candidate.url )) &&\n\t\t\t\t\t\tchooseLowRes(candidates[ j ].res, candidate.res, dpr, candidates[ j ].cached)) {\n\n\t\t\t\t\t\tbestCandidate = candidates[ j ];\n\n\t\t\t\t\t} else {\n\t\t\t\t\t\tbestCandidate = candidate;\n\t\t\t\t\t}\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\tif ( bestCandidate ) {\n\n\t\t\tcandidateSrc = pf.makeUrl( bestCandidate.url );\n\n\t\t\timageData.curSrc = candidateSrc;\n\t\t\timageData.curCan = bestCandidate;\n\n\t\t\tif ( candidateSrc !== curSrc ) {\n\t\t\t\tpf.setSrc( img, bestCandidate );\n\t\t\t}\n\t\t\tpf.setSize( img );\n\t\t}\n\t};\n\n\tpf.setSrc = function( img, bestCandidate ) {\n\t\tvar origWidth;\n\t\timg.src = bestCandidate.url;\n\n\t\t// although this is a specific Safari issue, we don't want to take too much different code paths\n\t\tif ( bestCandidate.set.type === \"image/svg+xml\" ) {\n\t\t\torigWidth = img.style.width;\n\t\t\timg.style.width = (img.offsetWidth + 1) + \"px\";\n\n\t\t\t// next line only should trigger a repaint\n\t\t\t// if... is only done to trick dead code removal\n\t\t\tif ( img.offsetWidth + 1 ) {\n\t\t\t\timg.style.width = origWidth;\n\t\t\t}\n\t\t}\n\t};\n\n\tpf.getSet = function( img ) {\n\t\tvar i, set, supportsType;\n\t\tvar match = false;\n\t\tvar sets = img [ pf.ns ].sets;\n\n\t\tfor ( i = 0; i < sets.length && !match; i++ ) {\n\t\t\tset = sets[i];\n\n\t\t\tif ( !set.srcset || !pf.matchesMedia( set.media ) || !(supportsType = pf.supportsType( set.type )) ) {\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\tif ( supportsType === \"pending\" ) {\n\t\t\t\tset = supportsType;\n\t\t\t}\n\n\t\t\tmatch = set;\n\t\t\tbreak;\n\t\t}\n\n\t\treturn match;\n\t};\n\n\tpf.parseSets = function( element, parent, options ) {\n\t\tvar srcsetAttribute, imageSet, isWDescripor, srcsetParsed;\n\n\t\tvar hasPicture = parent && parent.nodeName.toUpperCase() === \"PICTURE\";\n\t\tvar imageData = element[ pf.ns ];\n\n\t\tif ( imageData.src === undefined || options.src ) {\n\t\t\timageData.src = getImgAttr.call( element, \"src\" );\n\t\t\tif ( imageData.src ) {\n\t\t\t\tsetImgAttr.call( element, srcAttr, imageData.src );\n\t\t\t} else {\n\t\t\t\tremoveImgAttr.call( element, srcAttr );\n\t\t\t}\n\t\t}\n\n\t\tif ( imageData.srcset === undefined || options.srcset || !pf.supSrcset || element.srcset ) {\n\t\t\tsrcsetAttribute = getImgAttr.call( element, \"srcset\" );\n\t\t\timageData.srcset = srcsetAttribute;\n\t\t\tsrcsetParsed = true;\n\t\t}\n\n\t\timageData.sets = [];\n\n\t\tif ( hasPicture ) {\n\t\t\timageData.pic = true;\n\t\t\tgetAllSourceElements( parent, imageData.sets );\n\t\t}\n\n\t\tif ( imageData.srcset ) {\n\t\t\timageSet = {\n\t\t\t\tsrcset: imageData.srcset,\n\t\t\t\tsizes: getImgAttr.call( element, \"sizes\" )\n\t\t\t};\n\n\t\t\timageData.sets.push( imageSet );\n\n\t\t\tisWDescripor = (alwaysCheckWDescriptor || imageData.src) && regWDesc.test(imageData.srcset || \"\");\n\n\t\t\t// add normal src as candidate, if source has no w descriptor\n\t\t\tif ( !isWDescripor && imageData.src && !getCandidateForSrc(imageData.src, imageSet) && !imageSet.has1x ) {\n\t\t\t\timageSet.srcset += \", \" + imageData.src;\n\t\t\t\timageSet.cands.push({\n\t\t\t\t\turl: imageData.src,\n\t\t\t\t\td: 1,\n\t\t\t\t\tset: imageSet\n\t\t\t\t});\n\t\t\t}\n\n\t\t} else if ( imageData.src ) {\n\t\t\timageData.sets.push( {\n\t\t\t\tsrcset: imageData.src,\n\t\t\t\tsizes: null\n\t\t\t} );\n\t\t}\n\n\t\timageData.curCan = null;\n\t\timageData.curSrc = undefined;\n\n\t\t// if img has picture or the srcset was removed or has a srcset and does not support srcset at all\n\t\t// or has a w descriptor (and does not support sizes) set support to false to evaluate\n\t\timageData.supported = !( hasPicture || ( imageSet && !pf.supSrcset ) || (isWDescripor && !pf.supSizes) );\n\n\t\tif ( srcsetParsed && pf.supSrcset && !imageData.supported ) {\n\t\t\tif ( srcsetAttribute ) {\n\t\t\t\tsetImgAttr.call( element, srcsetAttr, srcsetAttribute );\n\t\t\t\telement.srcset = \"\";\n\t\t\t} else {\n\t\t\t\tremoveImgAttr.call( element, srcsetAttr );\n\t\t\t}\n\t\t}\n\n\t\tif (imageData.supported && !imageData.srcset && ((!imageData.src && element.src) ||  element.src !== pf.makeUrl(imageData.src))) {\n\t\t\tif (imageData.src === null) {\n\t\t\t\telement.removeAttribute(\"src\");\n\t\t\t} else {\n\t\t\t\telement.src = imageData.src;\n\t\t\t}\n\t\t}\n\n\t\timageData.parsed = true;\n\t};\n\n\tpf.fillImg = function(element, options) {\n\t\tvar imageData;\n\t\tvar extreme = options.reselect || options.reevaluate;\n\n\t\t// expando for caching data on the img\n\t\tif ( !element[ pf.ns ] ) {\n\t\t\telement[ pf.ns ] = {};\n\t\t}\n\n\t\timageData = element[ pf.ns ];\n\n\t\t// if the element has already been evaluated, skip it\n\t\t// unless `options.reevaluate` is set to true ( this, for example,\n\t\t// is set to true when running `picturefill` on `resize` ).\n\t\tif ( !extreme && imageData.evaled === evalId ) {\n\t\t\treturn;\n\t\t}\n\n\t\tif ( !imageData.parsed || options.reevaluate ) {\n\t\t\tpf.parseSets( element, element.parentNode, options );\n\t\t}\n\n\t\tif ( !imageData.supported ) {\n\t\t\tapplyBestCandidate( element );\n\t\t} else {\n\t\t\timageData.evaled = evalId;\n\t\t}\n\t};\n\n\tpf.setupRun = function() {\n\t\tif ( !alreadyRun || isVwDirty || (DPR !== window.devicePixelRatio) ) {\n\t\t\tupdateMetrics();\n\t\t}\n\t};\n\n\t// If picture is supported, well, that's awesome.\n\tif ( pf.supPicture ) {\n\t\tpicturefill = noop;\n\t\tpf.fillImg = noop;\n\t} else {\n\n\t\t // Set up picture polyfill by polling the document\n\t\t(function() {\n\t\t\tvar isDomReady;\n\t\t\tvar regReady = window.attachEvent ? /d$|^c/ : /d$|^c|^i/;\n\n\t\t\tvar run = function() {\n\t\t\t\tvar readyState = document.readyState || \"\";\n\n\t\t\t\ttimerId = setTimeout(run, readyState === \"loading\" ? 200 :  999);\n\t\t\t\tif ( document.body ) {\n\t\t\t\t\tpf.fillImgs();\n\t\t\t\t\tisDomReady = isDomReady || regReady.test(readyState);\n\t\t\t\t\tif ( isDomReady ) {\n\t\t\t\t\t\tclearTimeout( timerId );\n\t\t\t\t\t}\n\n\t\t\t\t}\n\t\t\t};\n\n\t\t\tvar timerId = setTimeout(run, document.body ? 9 : 99);\n\n\t\t\t// Also attach picturefill on resize and readystatechange\n\t\t\t// http://modernjavascript.blogspot.com/2013/08/building-better-debounce.html\n\t\t\tvar debounce = function(func, wait) {\n\t\t\t\tvar timeout, timestamp;\n\t\t\t\tvar later = function() {\n\t\t\t\t\tvar last = (new Date()) - timestamp;\n\n\t\t\t\t\tif (last < wait) {\n\t\t\t\t\t\ttimeout = setTimeout(later, wait - last);\n\t\t\t\t\t} else {\n\t\t\t\t\t\ttimeout = null;\n\t\t\t\t\t\tfunc();\n\t\t\t\t\t}\n\t\t\t\t};\n\n\t\t\t\treturn function() {\n\t\t\t\t\ttimestamp = new Date();\n\n\t\t\t\t\tif (!timeout) {\n\t\t\t\t\t\ttimeout = setTimeout(later, wait);\n\t\t\t\t\t}\n\t\t\t\t};\n\t\t\t};\n\t\t\tvar lastClientWidth = docElem.clientHeight;\n\t\t\tvar onResize = function() {\n\t\t\t\tisVwDirty = Math.max(window.innerWidth || 0, docElem.clientWidth) !== units.width || docElem.clientHeight !== lastClientWidth;\n\t\t\t\tlastClientWidth = docElem.clientHeight;\n\t\t\t\tif ( isVwDirty ) {\n\t\t\t\t\tpf.fillImgs();\n\t\t\t\t}\n\t\t\t};\n\n\t\t\ton( window, \"resize\", debounce(onResize, 99 ) );\n\t\t\ton( document, \"readystatechange\", run );\n\t\t})();\n\t}\n\n\tpf.picturefill = picturefill;\n\t//use this internally for easy monkey patching/performance testing\n\tpf.fillImgs = picturefill;\n\tpf.teardownRun = noop;\n\n\t/* expose methods for testing */\n\tpicturefill._ = pf;\n\n\twindow.picturefillCFG = {\n\t\tpf: pf,\n\t\tpush: function(args) {\n\t\t\tvar name = args.shift();\n\t\t\tif (typeof pf[name] === \"function\") {\n\t\t\t\tpf[name].apply(pf, args);\n\t\t\t} else {\n\t\t\t\tcfg[name] = args[0];\n\t\t\t\tif (alreadyRun) {\n\t\t\t\t\tpf.fillImgs( { reselect: true } );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t};\n\n\twhile (setOptions && setOptions.length) {\n\t\twindow.picturefillCFG.push(setOptions.shift());\n\t}\n\n\t/* expose picturefill */\n\twindow.picturefill = picturefill;\n\n\t/* expose picturefill */\n\tif ( typeof module === \"object\" && typeof module.exports === \"object\" ) {\n\t\t// CommonJS, just export\n\t\tmodule.exports = picturefill;\n\t} else if ( typeof define === \"function\" && define.amd ) {\n\t\t// AMD support\n\t\tdefine( \"picturefill\", function() { return picturefill; } );\n\t}\n\n\t// IE8 evals this sync, so it must be the last thing we do\n\tif ( !pf.supPicture ) {\n\t\ttypes[ \"image/webp\" ] = detectTypeSupport(\"image/webp\", \"data:image/webp;base64,UklGRkoAAABXRUJQVlA4WAoAAAAQAAAAAAAAAAAAQUxQSAwAAAABBxAR/Q9ERP8DAABWUDggGAAAADABAJ0BKgEAAQADADQlpAADcAD++/1QAA==\" );\n\t}\n\n} )( window, document );\n\n"]}