/**
 * @preserve HTML5 Shiv 3.7.3 | @afarkas @jdalton @jon_neal @rem | MIT/GPL2 Licensed
 */
;(function(window, document) {
	/*jshint evil:true */
	/** version */
	var version = '3.7.3';

	/** Preset options */
	var options = window.html5 || {};

	/** Used to skip problem elements */
	var reSkip = /^<|^(?:button|map|select|textarea|object|iframe|option|optgroup)$/i;

	/** Not all elements can be cloned in IE **/
	var saveClones = /^(?:a|b|code|div|fieldset|h1|h2|h3|h4|h5|h6|i|label|li|ol|p|q|span|strong|style|table|tbody|td|th|tr|ul)$/i;

	/** Detect whether the browser supports default html5 styles */
	var supportsHtml5Styles;

	/** Name of the expando, to work with multiple documents or to re-shiv one document */
	var expando = '_html5shiv';

	/** The id for the the documents expando */
	var expanID = 0;

	/** Cached data for each document */
	var expandoData = {};

	/** Detect whether the browser supports unknown elements */
	var supportsUnknownElements;

	(function() {
		try {
			var a = document.createElement( 'a' );
			a.innerHTML = '<xyz></xyz>';
			// if the hidden property is implemented we can assume, that the browser supports basic HTML5 Styles
			supportsHtml5Styles = ('hidden' in a);

			supportsUnknownElements = a.childNodes.length == 1 || (function() {
				// assign a false positive if unable to shiv
				(document.createElement)('a');
				var frag = document.createDocumentFragment();
				return (
				typeof frag.cloneNode == 'undefined' ||
				typeof frag.createDocumentFragment == 'undefined' ||
				typeof frag.createElement == 'undefined'
				);
			}());
		} catch (e) {
			// assign a false positive if detection fails => unable to shiv
			supportsHtml5Styles = true;
			supportsUnknownElements = true;
		}

	}());

	/*--------------------------------------------------------------------------*/

	/**
	 * Creates a style sheet with the given CSS text and adds it to the document.
	 *
	 * @private
	 * @param {Document} ownerDocument The document.
	 * @param {String} cssText The CSS text.
	 * @returns {StyleSheet} The style element.
	 */
	function addStyleSheet(ownerDocument, cssText) {
		var p = ownerDocument.createElement( 'p' ),
		parent = ownerDocument.getElementsByTagName( 'head' )[0] || ownerDocument.documentElement;

		p.innerHTML = 'x<style>' + cssText + '</style>';
		return parent.insertBefore( p.lastChild, parent.firstChild );
	}

	/**
	 * Returns the value of `html5.elements` as an array.
	 *
	 * @private
	 * @returns {Array} An array of shived element node names.
	 */
	function getElements() {
		var elements = html5.elements;
		return typeof elements == 'string' ? elements.split( ' ' ) : elements;
	}

	/**
	 * Extends the built-in list of html5 elements
	 *
	 * @memberOf html5
	 * @param {String|Array} newElements whitespace separated list or array of new element names to shiv
	 * @param {Document} ownerDocument The context document.
	 */
	function addElements(newElements, ownerDocument) {
		var elements = html5.elements;
		if (typeof elements != 'string') {
			elements = elements.join( ' ' );
		}
		if (typeof newElements != 'string') {
			newElements = newElements.join( ' ' );
		}
		html5.elements = elements + ' ' + newElements;
		shivDocument( ownerDocument );
	}

	/**
	 * Returns the data associated to the given document
	 *
	 * @private
	 * @param {Document} ownerDocument The document.
	 * @returns {Object} An object of data.
	 */
	function getExpandoData(ownerDocument) {
		var data = expandoData[ownerDocument[expando]];
		if ( ! data) {
			data = {};
			expanID++;
			ownerDocument[expando] = expanID;
			expandoData[expanID] = data;
		}
		return data;
	}

	/**
	 * returns a shived element for the given nodeName and document
	 *
	 * @memberOf html5
	 * @param {String} nodeName name of the element
	 * @param {Document|DocumentFragment} ownerDocument The context document.
	 * @returns {Object} The shived element.
	 */
	function createElement(nodeName, ownerDocument, data) {
		if ( ! ownerDocument) {
			ownerDocument = document;
		}
		if (supportsUnknownElements) {
			return ownerDocument.createElement( nodeName );
		}
		if ( ! data) {
			data = getExpandoData( ownerDocument );
		}
		var node;

		if (data.cache[nodeName]) {
			node = data.cache[nodeName].cloneNode();
		} else if (saveClones.test( nodeName )) {
			node = (data.cache[nodeName] = data.createElem( nodeName )).cloneNode();
		} else {
			node = data.createElem( nodeName );
		}

		// Avoid adding some elements to fragments in IE < 9 because
		// * Attributes like `name` or `type` cannot be set/changed once an element
		// is inserted into a document/fragment
		// * Link elements with `src` attributes that are inaccessible, as with
		// a 403 response, will cause the tab/window to crash
		// * Script elements appended to fragments will execute when their `src`
		// or `text` property is set
		return node.canHaveChildren && ! reSkip.test( nodeName ) && ! node.tagUrn ? data.frag.appendChild( node ) : node;
	}

	/**
	 * returns a shived DocumentFragment for the given document
	 *
	 * @memberOf html5
	 * @param {Document} ownerDocument The context document.
	 * @returns {Object} The shived DocumentFragment.
	 */
	function createDocumentFragment(ownerDocument, data) {
		if ( ! ownerDocument) {
			ownerDocument = document;
		}
		if (supportsUnknownElements) {
			return ownerDocument.createDocumentFragment();
		}
		data = data || getExpandoData( ownerDocument );
		var clone = data.frag.cloneNode(),
		i = 0,
		elems = getElements(),
		l = elems.length;
		for (;i < l;i++) {
			clone.createElement( elems[i] );
		}
		return clone;
	}

	/**
	 * Shivs the `createElement` and `createDocumentFragment` methods of the document.
	 *
	 * @private
	 * @param {Document|DocumentFragment} ownerDocument The document.
	 * @param {Object} data of the document.
	 */
	function shivMethods(ownerDocument, data) {
		if ( ! data.cache) {
			data.cache = {};
			data.createElem = ownerDocument.createElement;
			data.createFrag = ownerDocument.createDocumentFragment;
			data.frag = data.createFrag();
		}

		ownerDocument.createElement = function(nodeName) {
			// abort shiv
			if ( ! html5.shivMethods) {
				return data.createElem( nodeName );
			}
			return createElement( nodeName, ownerDocument, data );
		};

		ownerDocument.createDocumentFragment = Function('h,f', 'return function() {' +
			'var n=f.cloneNode(),c=n.createElement;' +
			'h.shivMethods&&(' +
			// unroll the `createElement` calls
			getElements().join().replace(/[\w\-:]+/g, function(nodeName) {
				data.createElem( nodeName );
				data.frag.createElement( nodeName );
				return 'c("' + nodeName + '")';
			}) +
			');return n}'
		)(html5, data.frag);
	}

	/*--------------------------------------------------------------------------*/

	/**
	 * Shivs the given document.
	 *
	 * @memberOf html5
	 * @param {Document} ownerDocument The document to shiv.
	 * @returns {Document} The shived document.
	 */
	function shivDocument(ownerDocument) {
		if ( ! ownerDocument) {
			ownerDocument = document;
		}
		var data = getExpandoData( ownerDocument );

		if (html5.shivCSS && ! supportsHtml5Styles && ! data.hasCSS) {
			data.hasCSS = ! ! addStyleSheet(ownerDocument,
				// corrects block display not defined in IE6/7/8/9
				'article,aside,dialog,figcaption,figure,footer,header,hgroup,main,nav,section{display:block}' +
				// adds styling not present in IE6/7/8/9
				'mark{background:#FF0;color:#000}' +
				// hides non-rendered elements
				'template{display:none}'
			);
		}
		if ( ! supportsUnknownElements) {
			shivMethods( ownerDocument, data );
		}
		return ownerDocument;
	}

	/*--------------------------------------------------------------------------*/

	/**
	* The `html5` object is exposed so that more elements can be shived and
	* existing shiving can be detected on iframes.
	*
	* @type Object
	* @example
	*
	* // options can be changed before the script is included
	* html5 = { 'elements': 'mark section', 'shivCSS': false, 'shivMethods': false };
	*/
	var html5 = {

		/**
		 * An array or space separated string of node names of the elements to shiv.
		 *
		 * @memberOf html5
		 * @type Array|String
		 */
		'elements': options.elements || 'abbr article aside audio bdi canvas data datalist details dialog figcaption figure footer header hgroup main mark meter nav output picture progress section summary template time video',

		/**
		 * current version of html5shiv
		 */
		'version': version,

		/**
		 * A flag to indicate that the HTML5 style sheet should be inserted.
		 *
		 * @memberOf html5
		 * @type Boolean
		 */
		'shivCSS': (options.shivCSS !== false),

		/**
		 * Is equal to true if a browser supports creating unknown/HTML5 elements
		 *
		 * @memberOf html5
		 * @type boolean
		 */
		'supportsUnknownElements': supportsUnknownElements,

		/**
		 * A flag to indicate that the document's `createElement` and `createDocumentFragment`
		 * methods should be overwritten.
		 *
		 * @memberOf html5
		 * @type Boolean
		 */
		'shivMethods': (options.shivMethods !== false),

		/**
		 * A string to describe the type of `html5` object ("default" or "default print").
		 *
		 * @memberOf html5
		 * @type String
		 */
		'type': 'default',

		// shivs the document according to the specified `html5` object options
		'shivDocument': shivDocument,

		// creates a shived element
		createElement: createElement,

		// creates a shived documentFragment
		createDocumentFragment: createDocumentFragment,

		// extends list of elements
		addElements: addElements
	};

	/*--------------------------------------------------------------------------*/

	// expose html5
	window.html5 = html5;

	// shiv the document
	shivDocument( document );

	if (typeof module == 'object' && module.exports) {
		module.exports = html5;
	}

}(typeof window !== "undefined" ? window : this, document));