diff --git a/_includes/themes/twitter/default.html b/_includes/themes/twitter/default.html
index 2d539b1..9854aa4 100644
--- a/_includes/themes/twitter/default.html
+++ b/_includes/themes/twitter/default.html
@@ -16,10 +16,10 @@
     <!-- Richard: Currently commented out until the site can be tested as is -->
     <!-- <link href="{{ ASSET_PATH }}/css/style.css?body=1" rel="stylesheet" type="text/css" media="all"> -->
 
-    <!-- Le HTML5 shim, for IE8 support of HTML elements -->
+    <!-- Le HTML5 shim and Respond.js IE8 support of HTML5 elements and media queries -->
     <!--[if lt IE 9]>
-      <script src="{{ ASSET_PATH }}/dist/html5shiv.js"></script>
-      <script src="{{ ASSET_PATH }}/dist/html5shiv-printshiv.js"></script>
+      <script src="https://oss.maxcdn.com/libs/html5shiv/3.7.0/html5shiv.js"></script>
+      <script src="{{ ASSET_PATH }}/bootstrap/js/response.min.js"></script>
     <![endif]-->
 
     <!-- Le fav and touch icons -->
diff --git a/assets/themes/twitter/bootstrap/js/respond.min.js b/assets/themes/twitter/bootstrap/js/respond.min.js
new file mode 100644
index 0000000..e3dc2c0
--- /dev/null
+++ b/assets/themes/twitter/bootstrap/js/respond.min.js
@@ -0,0 +1,6 @@
+/*! matchMedia() polyfill - Test a CSS media type/query in JS. Authors & copyright (c) 2012: Scott Jehl, Paul Irish, Nicholas Zakas. Dual MIT/BSD license */
+/*! NOTE: If you're already including a window.matchMedia polyfill via Modernizr or otherwise, you don't need this part */
+window.matchMedia=window.matchMedia||function(a){"use strict";var c,d=a.documentElement,e=d.firstElementChild||d.firstChild,f=a.createElement("body"),g=a.createElement("div");return g.id="mq-test-1",g.style.cssText="position:absolute;top:-100em",f.style.background="none",f.appendChild(g),function(a){return g.innerHTML='&shy;<style media="'+a+'"> #mq-test-1 { width: 42px; }</style>',d.insertBefore(f,e),c=42===g.offsetWidth,d.removeChild(f),{matches:c,media:a}}}(document);
+
+/*! Respond.js v1.3.0: min/max-width media query polyfill. (c) Scott Jehl. MIT/GPLv2 Lic. j.mp/respondjs  */
+(function(a){"use strict";function x(){u(!0)}var b={};if(a.respond=b,b.update=function(){},b.mediaQueriesSupported=a.matchMedia&&a.matchMedia("only all").matches,!b.mediaQueriesSupported){var q,r,t,c=a.document,d=c.documentElement,e=[],f=[],g=[],h={},i=30,j=c.getElementsByTagName("head")[0]||d,k=c.getElementsByTagName("base")[0],l=j.getElementsByTagName("link"),m=[],n=function(){for(var b=0;l.length>b;b++){var c=l[b],d=c.href,e=c.media,f=c.rel&&"stylesheet"===c.rel.toLowerCase();d&&f&&!h[d]&&(c.styleSheet&&c.styleSheet.rawCssText?(p(c.styleSheet.rawCssText,d,e),h[d]=!0):(!/^([a-zA-Z:]*\/\/)/.test(d)&&!k||d.replace(RegExp.$1,"").split("/")[0]===a.location.host)&&m.push({href:d,media:e}))}o()},o=function(){if(m.length){var b=m.shift();v(b.href,function(c){p(c,b.href,b.media),h[b.href]=!0,a.setTimeout(function(){o()},0)})}},p=function(a,b,c){var d=a.match(/@media[^\{]+\{([^\{\}]*\{[^\}\{]*\})+/gi),g=d&&d.length||0;b=b.substring(0,b.lastIndexOf("/"));var h=function(a){return a.replace(/(url\()['"]?([^\/\)'"][^:\)'"]+)['"]?(\))/g,"$1"+b+"$2$3")},i=!g&&c;b.length&&(b+="/"),i&&(g=1);for(var j=0;g>j;j++){var k,l,m,n;i?(k=c,f.push(h(a))):(k=d[j].match(/@media *([^\{]+)\{([\S\s]+?)$/)&&RegExp.$1,f.push(RegExp.$2&&h(RegExp.$2))),m=k.split(","),n=m.length;for(var o=0;n>o;o++)l=m[o],e.push({media:l.split("(")[0].match(/(only\s+)?([a-zA-Z]+)\s?/)&&RegExp.$2||"all",rules:f.length-1,hasquery:l.indexOf("(")>-1,minw:l.match(/\(\s*min\-width\s*:\s*(\s*[0-9\.]+)(px|em)\s*\)/)&&parseFloat(RegExp.$1)+(RegExp.$2||""),maxw:l.match(/\(\s*max\-width\s*:\s*(\s*[0-9\.]+)(px|em)\s*\)/)&&parseFloat(RegExp.$1)+(RegExp.$2||"")})}u()},s=function(){var a,b=c.createElement("div"),e=c.body,f=!1;return b.style.cssText="position:absolute;font-size:1em;width:1em",e||(e=f=c.createElement("body"),e.style.background="none"),e.appendChild(b),d.insertBefore(e,d.firstChild),a=b.offsetWidth,f?d.removeChild(e):e.removeChild(b),a=t=parseFloat(a)},u=function(b){var h="clientWidth",k=d[h],m="CSS1Compat"===c.compatMode&&k||c.body[h]||k,n={},o=l[l.length-1],p=(new Date).getTime();if(b&&q&&i>p-q)return a.clearTimeout(r),r=a.setTimeout(u,i),void 0;q=p;for(var v in e)if(e.hasOwnProperty(v)){var w=e[v],x=w.minw,y=w.maxw,z=null===x,A=null===y,B="em";x&&(x=parseFloat(x)*(x.indexOf(B)>-1?t||s():1)),y&&(y=parseFloat(y)*(y.indexOf(B)>-1?t||s():1)),w.hasquery&&(z&&A||!(z||m>=x)||!(A||y>=m))||(n[w.media]||(n[w.media]=[]),n[w.media].push(f[w.rules]))}for(var C in g)g.hasOwnProperty(C)&&g[C]&&g[C].parentNode===j&&j.removeChild(g[C]);for(var D in n)if(n.hasOwnProperty(D)){var E=c.createElement("style"),F=n[D].join("\n");E.type="text/css",E.media=D,j.insertBefore(E,o.nextSibling),E.styleSheet?E.styleSheet.cssText=F:E.appendChild(c.createTextNode(F)),g.push(E)}},v=function(a,b){var c=w();c&&(c.open("GET",a,!0),c.onreadystatechange=function(){4!==c.readyState||200!==c.status&&304!==c.status||b(c.responseText)},4!==c.readyState&&c.send(null))},w=function(){var b=!1;try{b=new a.XMLHttpRequest}catch(c){b=new a.ActiveXObject("Microsoft.XMLHTTP")}return function(){return b}}();n(),b.update=n,a.addEventListener?a.addEventListener("resize",x,!1):a.attachEvent&&a.attachEvent("onresize",x)}})(this);
diff --git a/assets/themes/twitter/dist/html5shiv-printshiv.js b/assets/themes/twitter/dist/html5shiv-printshiv.js
deleted file mode 100755
index bc7fb34..0000000
--- a/assets/themes/twitter/dist/html5shiv-printshiv.js
+++ /dev/null
@@ -1,499 +0,0 @@
-/**
-* @preserve HTML5 Shiv prev3.7.1 | @afarkas @jdalton @jon_neal @rem | MIT/GPL2 Licensed
-*/
-;(function(window, document) {
-/*jshint evil:true */
-  /** version */
-  var version = '3.7.0';
-
-  /** 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;
-  }
-
-    /**
-   * 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} 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 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
-  };
-
-  /*--------------------------------------------------------------------------*/
-
-  // expose html5
-  window.html5 = html5;
-
-  // shiv the document
-  shivDocument(document);
-
-  /*------------------------------- Print Shiv -------------------------------*/
-
-  /** Used to filter media types */
-  var reMedia = /^$|\b(?:all|print)\b/;
-
-  /** Used to namespace printable elements */
-  var shivNamespace = 'html5shiv';
-
-  /** Detect whether the browser supports shivable style sheets */
-  var supportsShivableSheets = !supportsUnknownElements && (function() {
-    // assign a false negative if unable to shiv
-    var docEl = document.documentElement;
-    return !(
-      typeof document.namespaces == 'undefined' ||
-      typeof document.parentWindow == 'undefined' ||
-      typeof docEl.applyElement == 'undefined' ||
-      typeof docEl.removeNode == 'undefined' ||
-      typeof window.attachEvent == 'undefined'
-    );
-  }());
-
-  /*--------------------------------------------------------------------------*/
-
-  /**
-   * Wraps all HTML5 elements in the given document with printable elements.
-   * (eg. the "header" element is wrapped with the "html5shiv:header" element)
-   * @private
-   * @param {Document} ownerDocument The document.
-   * @returns {Array} An array wrappers added.
-   */
-  function addWrappers(ownerDocument) {
-    var node,
-        nodes = ownerDocument.getElementsByTagName('*'),
-        index = nodes.length,
-        reElements = RegExp('^(?:' + getElements().join('|') + ')$', 'i'),
-        result = [];
-
-    while (index--) {
-      node = nodes[index];
-      if (reElements.test(node.nodeName)) {
-        result.push(node.applyElement(createWrapper(node)));
-      }
-    }
-    return result;
-  }
-
-  /**
-   * Creates a printable wrapper for the given element.
-   * @private
-   * @param {Element} element The element.
-   * @returns {Element} The wrapper.
-   */
-  function createWrapper(element) {
-    var node,
-        nodes = element.attributes,
-        index = nodes.length,
-        wrapper = element.ownerDocument.createElement(shivNamespace + ':' + element.nodeName);
-
-    // copy element attributes to the wrapper
-    while (index--) {
-      node = nodes[index];
-      node.specified && wrapper.setAttribute(node.nodeName, node.nodeValue);
-    }
-    // copy element styles to the wrapper
-    wrapper.style.cssText = element.style.cssText;
-    return wrapper;
-  }
-
-  /**
-   * Shivs the given CSS text.
-   * (eg. header{} becomes html5shiv\:header{})
-   * @private
-   * @param {String} cssText The CSS text to shiv.
-   * @returns {String} The shived CSS text.
-   */
-  function shivCssText(cssText) {
-    var pair,
-        parts = cssText.split('{'),
-        index = parts.length,
-        reElements = RegExp('(^|[\\s,>+~])(' + getElements().join('|') + ')(?=[[\\s,>+~#.:]|$)', 'gi'),
-        replacement = '$1' + shivNamespace + '\\:$2';
-
-    while (index--) {
-      pair = parts[index] = parts[index].split('}');
-      pair[pair.length - 1] = pair[pair.length - 1].replace(reElements, replacement);
-      parts[index] = pair.join('}');
-    }
-    return parts.join('{');
-  }
-
-  /**
-   * Removes the given wrappers, leaving the original elements.
-   * @private
-   * @params {Array} wrappers An array of printable wrappers.
-   */
-  function removeWrappers(wrappers) {
-    var index = wrappers.length;
-    while (index--) {
-      wrappers[index].removeNode();
-    }
-  }
-
-  /*--------------------------------------------------------------------------*/
-
-  /**
-   * Shivs the given document for print.
-   * @memberOf html5
-   * @param {Document} ownerDocument The document to shiv.
-   * @returns {Document} The shived document.
-   */
-  function shivPrint(ownerDocument) {
-    var shivedSheet,
-        wrappers,
-        data = getExpandoData(ownerDocument),
-        namespaces = ownerDocument.namespaces,
-        ownerWindow = ownerDocument.parentWindow;
-
-    if (!supportsShivableSheets || ownerDocument.printShived) {
-      return ownerDocument;
-    }
-    if (typeof namespaces[shivNamespace] == 'undefined') {
-      namespaces.add(shivNamespace);
-    }
-
-    function removeSheet() {
-      clearTimeout(data._removeSheetTimer);
-      if (shivedSheet) {
-          shivedSheet.removeNode(true);
-      }
-      shivedSheet= null;
-    }
-
-    ownerWindow.attachEvent('onbeforeprint', function() {
-
-      removeSheet();
-
-      var imports,
-          length,
-          sheet,
-          collection = ownerDocument.styleSheets,
-          cssText = [],
-          index = collection.length,
-          sheets = Array(index);
-
-      // convert styleSheets collection to an array
-      while (index--) {
-        sheets[index] = collection[index];
-      }
-      // concat all style sheet CSS text
-      while ((sheet = sheets.pop())) {
-        // IE does not enforce a same origin policy for external style sheets...
-        // but has trouble with some dynamically created stylesheets
-        if (!sheet.disabled && reMedia.test(sheet.media)) {
-
-          try {
-            imports = sheet.imports;
-            length = imports.length;
-          } catch(er){
-            length = 0;
-          }
-
-          for (index = 0; index < length; index++) {
-            sheets.push(imports[index]);
-          }
-
-          try {
-            cssText.push(sheet.cssText);
-          } catch(er){}
-        }
-      }
-
-      // wrap all HTML5 elements with printable elements and add the shived style sheet
-      cssText = shivCssText(cssText.reverse().join(''));
-      wrappers = addWrappers(ownerDocument);
-      shivedSheet = addStyleSheet(ownerDocument, cssText);
-
-    });
-
-    ownerWindow.attachEvent('onafterprint', function() {
-      // remove wrappers, leaving the original elements, and remove the shived style sheet
-      removeWrappers(wrappers);
-      clearTimeout(data._removeSheetTimer);
-      data._removeSheetTimer = setTimeout(removeSheet, 500);
-    });
-
-    ownerDocument.printShived = true;
-    return ownerDocument;
-  }
-
-  /*--------------------------------------------------------------------------*/
-
-  // expose API
-  html5.type += ' print';
-  html5.shivPrint = shivPrint;
-
-  // shiv for print
-  shivPrint(document);
-
-}(this, document));
diff --git a/assets/themes/twitter/dist/html5shiv.js b/assets/themes/twitter/dist/html5shiv.js
deleted file mode 100755
index 205bdfe..0000000
--- a/assets/themes/twitter/dist/html5shiv.js
+++ /dev/null
@@ -1,301 +0,0 @@
-/**
-* @preserve HTML5 Shiv prev3.7.1 | @afarkas @jdalton @jon_neal @rem | MIT/GPL2 Licensed
-*/
-;(function(window, document) {
-/*jshint evil:true */
-  /** version */
-  var version = '3.7.0';
-
-  /** 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;
-  }
-
-    /**
-   * 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} 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 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
-  };
-
-  /*--------------------------------------------------------------------------*/
-
-  // expose html5
-  window.html5 = html5;
-
-  // shiv the document
-  shivDocument(document);
-
-}(this, document));