// JScript source code
/*!
* Modernizr v2.0.6
* http://www.modernizr.com
*
* Copyright (c) 2009-2011 Faruk Ates, Paul Irish, Alex Sexton
* Dual-licensed under the BSD or MIT licenses: www.modernizr.com/license/
*/

/*
* Modernizr tests which native CSS3 and HTML5 features are available in
* the current UA and makes the results available to you in two ways:
* as properties on a global Modernizr object, and as classes on the
* <html> element. This information allows you to progressively enhance
* your pages with a granular level of control over the experience.
*
* Modernizr has an optional (not included) conditional resource loader
* called Modernizr.load(), based on Yepnope.js (yepnopejs.com).
* To get a build that includes Modernizr.load(), as well as choosing
* which tests to include, go to www.modernizr.com/download/
*
* Authors        Faruk Ates, Paul Irish, Alex Sexton, 
* Contributors   Ryan Seddon, Ben Alman
*/

window.Modernizr = (function (window, document, undefined) {

  var version = '2.0.6',

    Modernizr = {},

  // option for enabling the HTML classes to be added
    enableClasses = true,

    docElement = document.documentElement,
    docHead = document.head || document.getElementsByTagName('head')[0],

  /**
  * Create our "modernizr" element that we do most feature tests on.
  */
    mod = 'modernizr',
    modElem = document.createElement(mod),
    mStyle = modElem.style,

  /**
  * Create the input element for various Web Forms feature tests.
  */
    inputElem = document.createElement('input'),

    smile = ':)',

    toString = Object.prototype.toString,

  // List of property values to set for css tests. See ticket #21
    prefixes = ' -webkit- -moz- -o- -ms- -khtml- '.split(' '),

  // Following spec is to expose vendor-specific style properties as:
  //   elem.style.WebkitBorderRadius
  // and the following would be incorrect:
  //   elem.style.webkitBorderRadius

  // Webkit ghosts their properties in lowercase but Opera & Moz do not.
  // Microsoft foregoes prefixes entirely <= IE8, but appears to
  //   use a lowercase `ms` instead of the correct `Ms` in IE9

  // More here: http://github.com/Modernizr/Modernizr/issues/issue/21
    domPrefixes = 'Webkit Moz O ms Khtml'.split(' '),

    ns = { 'svg': 'http://www.w3.org/2000/svg' },

    tests = {},
    inputs = {},
    attrs = {},

    classes = [],

    featureName, // used in testing loop


  // Inject element with style element and some CSS rules
    injectElementWithStyles = function (rule, callback, nodes, testnames) {

      var style, ret, node,
          div = document.createElement('div');

      if (parseInt(nodes, 10)) {
        // In order not to give false positives we create a node for each test
        // This also allows the method to scale for unspecified uses
        while (nodes--) {
          node = document.createElement('div');
          node.id = testnames ? testnames[nodes] : mod + (nodes + 1);
          div.appendChild(node);
        }
      }

      // <style> elements in IE6-9 are considered 'NoScope' elements and therefore will be removed
      // when injected with innerHTML. To get around this you need to prepend the 'NoScope' element
      // with a 'scoped' element, in our case the soft-hyphen entity as it won't mess with our measurements.
      // http://msdn.microsoft.com/en-us/library/ms533897%28VS.85%29.aspx
      style = ['&shy;', '<style>', rule, '</style>'].join('');
      div.id = mod;
      div.innerHTML += style;
      docElement.appendChild(div);

      ret = callback(div, rule);
      div.parentNode.removeChild(div);

      return !!ret;

    },


  // adapted from matchMedia polyfill
  // by Scott Jehl and Paul Irish
  // gist.github.com/786768
    testMediaQuery = function (mq) {

      if (window.matchMedia) {
        return matchMedia(mq).matches;
      }

      var bool;

      injectElementWithStyles('@media ' + mq + ' { #' + mod + ' { position: absolute; } }', function (node) {
        bool = (window.getComputedStyle ?
                  getComputedStyle(node, null) :
                  node.currentStyle)['position'] == 'absolute';
      });

      return bool;

    },


  /**
  * isEventSupported determines if a given element supports the given event
  * function from http://yura.thinkweb2.com/isEventSupported/
  */
    isEventSupported = (function () {

      var TAGNAMES = {
        'select': 'input', 'change': 'input',
        'submit': 'form', 'reset': 'form',
        'error': 'img', 'load': 'img', 'abort': 'img'
      };

      function isEventSupported(eventName, element) {

        element = element || document.createElement(TAGNAMES[eventName] || 'div');
        eventName = 'on' + eventName;

        // When using `setAttribute`, IE skips "unload", WebKit skips "unload" and "resize", whereas `in` "catches" those
        var isSupported = eventName in element;

        if (!isSupported) {
          // If it has no `setAttribute` (i.e. doesn't implement Node interface), try generic element
          if (!element.setAttribute) {
            element = document.createElement('div');
          }
          if (element.setAttribute && element.removeAttribute) {
            element.setAttribute(eventName, '');
            isSupported = is(element[eventName], 'function');

            // If property was created, "remove it" (by setting value to `undefined`)
            if (!is(element[eventName], undefined)) {
              element[eventName] = undefined;
            }
            element.removeAttribute(eventName);
          }
        }

        element = null;
        return isSupported;
      }
      return isEventSupported;
    })();

  // hasOwnProperty shim by kangax needed for Safari 2.0 support
  var _hasOwnProperty = ({}).hasOwnProperty, hasOwnProperty;
  if (!is(_hasOwnProperty, undefined) && !is(_hasOwnProperty.call, undefined)) {
    hasOwnProperty = function (object, property) {
      return _hasOwnProperty.call(object, property);
    };
  }
  else {
    hasOwnProperty = function (object, property) { /* yes, this can give false positives/negatives, but most of the time we don't care about those */
      return ((property in object) && is(object.constructor.prototype[property], undefined));
    };
  }

  /**
  * setCss applies given styles to the Modernizr DOM node.
  */
  function setCss(str) {
    mStyle.cssText = str;
  }

  /**
  * setCssAll extrapolates all vendor-specific css strings.
  */
  function setCssAll(str1, str2) {
    return setCss(prefixes.join(str1 + ';') + (str2 || ''));
  }

  /**
  * is returns a boolean for if typeof obj is exactly type.
  */
  function is(obj, type) {
    return typeof obj === type;
  }

  /**
  * contains returns a boolean for if substr is found within str.
  */
  function contains(str, substr) {
    return !! ~('' + str).indexOf(substr);
  }

  /**
  * testProps is a generic CSS / DOM property test; if a browser supports
  *   a certain property, it won't return undefined for it.
  *   A supported CSS property returns empty string when its not yet set.
  */
  function testProps(props, prefixed) {
    for (var i in props) {
      if (mStyle[props[i]] !== undefined) {
        return prefixed == 'pfx' ? props[i] : true;
      }
    }
    return false;
  }

  /**
  * testPropsAll tests a list of DOM properties we want to check against.
  *   We specify literally ALL possible (known and/or likely) properties on
  *   the element including the non-vendor prefixed one, for forward-
  *   compatibility.
  */
  function testPropsAll(prop, prefixed) {

    var ucProp = prop.charAt(0).toUpperCase() + prop.substr(1),
            props = (prop + ' ' + domPrefixes.join(ucProp + ' ') + ucProp).split(' ');

    return testProps(props, prefixed);
  }

  /**
  * testBundle tests a list of CSS features that require element and style injection.
  *   By bundling them together we can reduce the need to touch the DOM multiple times.
  */
  /*>>testBundle*/
  var testBundle = (function (styles, tests) {
    var style = styles.join(''),
            len = tests.length;

    injectElementWithStyles(style, function (node, rule) {
      var style = document.styleSheets[document.styleSheets.length - 1],
      // IE8 will bork if you create a custom build that excludes both fontface and generatedcontent tests.
      // So we check for cssRules and that there is a rule available
      // More here: https://github.com/Modernizr/Modernizr/issues/288 & https://github.com/Modernizr/Modernizr/issues/293
                cssText = style.cssRules && style.cssRules[0] ? style.cssRules[0].cssText : style.cssText || "",
                children = node.childNodes, hash = {};

      while (len--) {
        hash[children[len].id] = children[len];
      }

      /*>>touch*/Modernizr['touch'] = ('ontouchstart' in window) || hash['touch'].offsetTop === 9; /*>>touch*/
      /*>>csstransforms3d*/Modernizr['csstransforms3d'] = hash['csstransforms3d'].offsetLeft === 9;          /*>>csstransforms3d*/
      /*>>generatedcontent*/Modernizr['generatedcontent'] = hash['generatedcontent'].offsetHeight >= 1;       /*>>generatedcontent*/
      /*>>fontface*/Modernizr['fontface'] = /src/i.test(cssText) &&
                                                                  cssText.indexOf(rule.split(' ')[0]) === 0;        /*>>fontface*/
    }, len, tests);

  })([
  // Pass in styles to be injected into document
  /*>>fontface*/'@font-face {font-family:"font";src:url("https://")}'         /*>>fontface*/

  /*>>touch*/, ['@media (', prefixes.join('touch-enabled),('), mod, ')',
                                '{#touch{top:9px;position:absolute}}'].join('')           /*>>touch*/

  /*>>csstransforms3d*/, ['@media (', prefixes.join('transform-3d),('), mod, ')',
                                '{#csstransforms3d{left:9px;position:absolute}}'].join('')/*>>csstransforms3d*/

  /*>>generatedcontent*/, ['#generatedcontent:after{content:"', smile, '";visibility:hidden}'].join('')  /*>>generatedcontent*/
    ],
      [
  /*>>fontface*/'fontface'          /*>>fontface*/
  /*>>touch*/, 'touch'            /*>>touch*/
  /*>>csstransforms3d*/, 'csstransforms3d'  /*>>csstransforms3d*/
  /*>>generatedcontent*/, 'generatedcontent' /*>>generatedcontent*/

    ]); /*>>testBundle*/


  /**
  * Tests
  * -----
  */

  tests['flexbox'] = function () {
    /**
    * setPrefixedValueCSS sets the property of a specified element
    * adding vendor prefixes to the VALUE of the property.
    * @param {Element} element
    * @param {string} property The property name. This will not be prefixed.
    * @param {string} value The value of the property. This WILL be prefixed.
    * @param {string=} extra Additional CSS to append unmodified to the end of
    * the CSS string.
    */
    function setPrefixedValueCSS(element, property, value, extra) {
      property += ':';
      element.style.cssText = (property + prefixes.join(value + ';' + property)).slice(0, -property.length) + (extra || '');
    }

    /**
    * setPrefixedPropertyCSS sets the property of a specified element
    * adding vendor prefixes to the NAME of the property.
    * @param {Element} element
    * @param {string} property The property name. This WILL be prefixed.
    * @param {string} value The value of the property. This will not be prefixed.
    * @param {string=} extra Additional CSS to append unmodified to the end of
    * the CSS string.
    */
    function setPrefixedPropertyCSS(element, property, value, extra) {
      element.style.cssText = prefixes.join(property + ':' + value + ';') + (extra || '');
    }

    var c = document.createElement('div'),
            elem = document.createElement('div');

    setPrefixedValueCSS(c, 'display', 'box', 'width:42px;padding:0;');
    setPrefixedPropertyCSS(elem, 'box-flex', '1', 'width:10px;');

    c.appendChild(elem);
    docElement.appendChild(c);

    var ret = elem.offsetWidth === 42;

    c.removeChild(elem);
    docElement.removeChild(c);

    return ret;
  };

  // On the S60 and BB Storm, getContext exists, but always returns undefined
  // http://github.com/Modernizr/Modernizr/issues/issue/97/

  tests['canvas'] = function () {
    var elem = document.createElement('canvas');
    return !!(elem.getContext && elem.getContext('2d'));
  };

  tests['canvastext'] = function () {
    return !!(Modernizr['canvas'] && is(document.createElement('canvas').getContext('2d').fillText, 'function'));
  };

  // This WebGL test may false positive. 
  // But really it's quite impossible to know whether webgl will succeed until after you create the context. 
  // You might have hardware that can support a 100x100 webgl canvas, but will not support a 1000x1000 webgl 
  // canvas. So this feature inference is weak, but intentionally so.

  // It is known to false positive in FF4 with certain hardware and the iPad 2.

  tests['webgl'] = function () {
    return !!window.WebGLRenderingContext;
  };

  /*
  * The Modernizr.touch test only indicates if the browser supports
  *    touch events, which does not necessarily reflect a touchscreen
  *    device, as evidenced by tablets running Windows 7 or, alas,
  *    the Palm Pre / WebOS (touch) phones.
  *
  * Additionally, Chrome (desktop) used to lie about its support on this,
  *    but that has since been rectified: http://crbug.com/36415
  *
  * We also test for Firefox 4 Multitouch Support.
  *
  * For more info, see: http://modernizr.github.com/Modernizr/touch.html
  */

  tests['touch'] = function () {
    return Modernizr['touch'];
  };

  /**
  * geolocation tests for the new Geolocation API specification.
  *   This test is a standards compliant-only test; for more complete
  *   testing, including a Google Gears fallback, please see:
  *   http://code.google.com/p/geo-location-javascript/
  * or view a fallback solution using google's geo API:
  *   http://gist.github.com/366184
  */
  tests['geolocation'] = function () {
    return !!navigator.geolocation;
  };

  // Per 1.6:
  // This used to be Modernizr.crosswindowmessaging but the longer
  // name has been deprecated in favor of a shorter and property-matching one.
  // The old API is still available in 1.6, but as of 2.0 will throw a warning,
  // and in the first release thereafter disappear entirely.
  tests['postmessage'] = function () {
    return !!window.postMessage;
  };

  // Web SQL database detection is tricky:

  // In chrome incognito mode, openDatabase is truthy, but using it will
  //   throw an exception: http://crbug.com/42380
  // We can create a dummy database, but there is no way to delete it afterwards.

  // Meanwhile, Safari users can get prompted on any database creation.
  //   If they do, any page with Modernizr will give them a prompt:
  //   http://github.com/Modernizr/Modernizr/issues/closed#issue/113

  // We have chosen to allow the Chrome incognito false positive, so that Modernizr
  //   doesn't litter the web with these test databases. As a developer, you'll have
  //   to account for this gotcha yourself.
  tests['websqldatabase'] = function () {
    var result = !!window.openDatabase;
    /*  if (result){
    try {
    result = !!openDatabase( mod + "testdb", "1.0", mod + "testdb", 2e4);
    } catch(e) {
    }
    }  */
    return result;
  };

  // Vendors had inconsistent prefixing with the experimental Indexed DB:
  // - Webkit's implementation is accessible through webkitIndexedDB
  // - Firefox shipped moz_indexedDB before FF4b9, but since then has been mozIndexedDB
  // For speed, we don't test the legacy (and beta-only) indexedDB
  tests['indexedDB'] = function () {
    for (var i = -1, len = domPrefixes.length; ++i < len; ) {
      if (window[domPrefixes[i].toLowerCase() + 'IndexedDB']) {
        return true;
      }
    }
    return !!window.indexedDB;
  };

  // documentMode logic from YUI to filter out IE8 Compat Mode
  //   which false positives.
  tests['hashchange'] = function () {
    return isEventSupported('hashchange', window) && (document.documentMode === undefined || document.documentMode > 7);
  };

  // Per 1.6:
  // This used to be Modernizr.historymanagement but the longer
  // name has been deprecated in favor of a shorter and property-matching one.
  // The old API is still available in 1.6, but as of 2.0 will throw a warning,
  // and in the first release thereafter disappear entirely.
  tests['history'] = function () {
    return !!(window.history && history.pushState);
  };

  tests['draganddrop'] = function () {
    return isEventSupported('dragstart') && isEventSupported('drop');
  };

  // Mozilla is targeting to land MozWebSocket for FF6
  // bugzil.la/659324
  tests['websockets'] = function () {
    for (var i = -1, len = domPrefixes.length; ++i < len; ) {
      if (window[domPrefixes[i] + 'WebSocket']) {
        return true;
      }
    }
    return 'WebSocket' in window;
  };


  // http://css-tricks.com/rgba-browser-support/
  tests['rgba'] = function () {
    // Set an rgba() color and check the returned value

    setCss('background-color:rgba(150,255,150,.5)');

    return contains(mStyle.backgroundColor, 'rgba');
  };

  tests['hsla'] = function () {
    // Same as rgba(), in fact, browsers re-map hsla() to rgba() internally,
    //   except IE9 who retains it as hsla

    setCss('background-color:hsla(120,40%,100%,.5)');

    return contains(mStyle.backgroundColor, 'rgba') || contains(mStyle.backgroundColor, 'hsla');
  };

  tests['multiplebgs'] = function () {
    // Setting multiple images AND a color on the background shorthand property
    //  and then querying the style.background property value for the number of
    //  occurrences of "url(" is a reliable method for detecting ACTUAL support for this!

    setCss('background:url(https://),url(https://),red url(https://)');

    // If the UA supports multiple backgrounds, there should be three occurrences
    //   of the string "url(" in the return value for elemStyle.background

    return /(url\s*\(.*?){3}/.test(mStyle.background);
  };


  // In testing support for a given CSS property, it's legit to test:
  //    `elem.style[styleName] !== undefined`
  // If the property is supported it will return an empty string,
  // if unsupported it will return undefined.

  // We'll take advantage of this quick test and skip setting a style
  // on our modernizr element, but instead just testing undefined vs
  // empty string.


  tests['backgroundsize'] = function () {
    return testPropsAll('backgroundSize');
  };

  tests['borderimage'] = function () {
    return testPropsAll('borderImage');
  };


  // Super comprehensive table about all the unique implementations of
  // border-radius: http://muddledramblings.com/table-of-css3-border-radius-compliance

  tests['borderradius'] = function () {
    return testPropsAll('borderRadius');
  };

  // WebOS unfortunately false positives on this test.
  tests['boxshadow'] = function () {
    return testPropsAll('boxShadow');
  };

  // FF3.0 will false positive on this test
  tests['textshadow'] = function () {
    return document.createElement('div').style.textShadow === '';
  };


  tests['opacity'] = function () {
    // Browsers that actually have CSS Opacity implemented have done so
    //  according to spec, which means their return values are within the
    //  range of [0.0,1.0] - including the leading zero.

    setCssAll('opacity:.55');

    // The non-literal . in this regex is intentional:
    //   German Chrome returns this value as 0,55
    // https://github.com/Modernizr/Modernizr/issues/#issue/59/comment/516632
    return /^0.55$/.test(mStyle.opacity);
  };


  tests['cssanimations'] = function () {
    return testPropsAll('animationName');
  };


  tests['csscolumns'] = function () {
    return testPropsAll('columnCount');
  };


  tests['cssgradients'] = function () {
    /**
    * For CSS Gradients syntax, please see:
    * http://webkit.org/blog/175/introducing-css-gradients/
    * https://developer.mozilla.org/en/CSS/-moz-linear-gradient
    * https://developer.mozilla.org/en/CSS/-moz-radial-gradient
    * http://dev.w3.org/csswg/css3-images/#gradients-
    */

    var str1 = 'background-image:',
            str2 = 'gradient(linear,left top,right bottom,from(#9f9),to(white));',
            str3 = 'linear-gradient(left top,#9f9, white);';

    setCss(
            (str1 + prefixes.join(str2 + str1) + prefixes.join(str3 + str1)).slice(0, -str1.length)
        );

    return contains(mStyle.backgroundImage, 'gradient');
  };


  tests['cssreflections'] = function () {
    return testPropsAll('boxReflect');
  };


  tests['csstransforms'] = function () {
    return !!testProps(['transformProperty', 'WebkitTransform', 'MozTransform', 'OTransform', 'msTransform']);
  };


  tests['csstransforms3d'] = function () {

    var ret = !!testProps(['perspectiveProperty', 'WebkitPerspective', 'MozPerspective', 'OPerspective', 'msPerspective']);

    // Webkit’s 3D transforms are passed off to the browser's own graphics renderer.
    //   It works fine in Safari on Leopard and Snow Leopard, but not in Chrome in
    //   some conditions. As a result, Webkit typically recognizes the syntax but
    //   will sometimes throw a false positive, thus we must do a more thorough check:
    if (ret && 'webkitPerspective' in docElement.style) {

      // Webkit allows this media query to succeed only if the feature is enabled.
      // `@media (transform-3d),(-o-transform-3d),(-moz-transform-3d),(-ms-transform-3d),(-webkit-transform-3d),(modernizr){ ... }`
      ret = Modernizr['csstransforms3d'];
    }
    return ret;
  };


  tests['csstransitions'] = function () {
    return testPropsAll('transitionProperty');
  };


  /*>>fontface*/
  // @font-face detection routine by Diego Perini
  // http://javascript.nwbox.com/CSSSupport/
  tests['fontface'] = function () {
    return Modernizr['fontface'];
  };
  /*>>fontface*/

  // CSS generated content detection
  tests['generatedcontent'] = function () {
    return Modernizr['generatedcontent'];
  };



  // These tests evaluate support of the video/audio elements, as well as
  // testing what types of content they support.
  //
  // We're using the Boolean constructor here, so that we can extend the value
  // e.g.  Modernizr.video     // true
  //       Modernizr.video.ogg // 'probably'
  //
  // Codec values from : http://github.com/NielsLeenheer/html5test/blob/9106a8/index.html#L845
  //                     thx to NielsLeenheer and zcorpan

  // Note: in FF 3.5.1 and 3.5.0, "no" was a return value instead of empty string.
  //   Modernizr does not normalize for that.

  tests['video'] = function () {
    var elem = document.createElement('video'),
            bool = false;

    // IE9 Running on Windows Server SKU can cause an exception to be thrown, bug #224
    try {
      if (bool = !!elem.canPlayType) {
        bool = new Boolean(bool);
        bool.ogg = elem.canPlayType('video/ogg; codecs="theora"');

        // Workaround required for IE9, which doesn't report video support without audio codec specified.
        //   bug 599718 @ msft connect
        var h264 = 'video/mp4; codecs="avc1.42E01E';
        bool.h264 = elem.canPlayType(h264 + '"') || elem.canPlayType(h264 + ', mp4a.40.2"');

        bool.webm = elem.canPlayType('video/webm; codecs="vp8, vorbis"');
      }

    } catch (e) { }

    return bool;
  };

  tests['audio'] = function () {
    var elem = document.createElement('audio'),
            bool = false;

    try {
      if (bool = !!elem.canPlayType) {
        bool = new Boolean(bool);
        bool.ogg = elem.canPlayType('audio/ogg; codecs="vorbis"');
        bool.mp3 = elem.canPlayType('audio/mpeg;');

        // Mimetypes accepted:
        //   https://developer.mozilla.org/En/Media_formats_supported_by_the_audio_and_video_elements
        //   http://bit.ly/iphoneoscodecs
        bool.wav = elem.canPlayType('audio/wav; codecs="1"');
        bool.m4a = elem.canPlayType('audio/x-m4a;') || elem.canPlayType('audio/aac;');
      }
    } catch (e) { }

    return bool;
  };


  // Firefox has made these tests rather unfun.

  // In FF4, if disabled, window.localStorage should === null.

  // Normally, we could not test that directly and need to do a
  //   `('localStorage' in window) && ` test first because otherwise Firefox will
  //   throw http://bugzil.la/365772 if cookies are disabled

  // However, in Firefox 4 betas, if dom.storage.enabled == false, just mentioning
  //   the property will throw an exception. http://bugzil.la/599479
  // This looks to be fixed for FF4 Final.

  // Because we are forced to try/catch this, we'll go aggressive.

  // FWIW: IE8 Compat mode supports these features completely:
  //   http://www.quirksmode.org/dom/html5.html
  // But IE8 doesn't support either with local files

  tests['localstorage'] = function () {
    try {
      return !!localStorage.getItem;
    } catch (e) {
      return false;
    }
  };

  tests['sessionstorage'] = function () {
    try {
      return !!sessionStorage.getItem;
    } catch (e) {
      return false;
    }
  };


  tests['webworkers'] = function () {
    return !!window.Worker;
  };


  tests['applicationcache'] = function () {
    return !!window.applicationCache;
  };


  // Thanks to Erik Dahlstrom
  tests['svg'] = function () {
    return !!document.createElementNS && !!document.createElementNS(ns.svg, 'svg').createSVGRect;
  };

  // specifically for SVG inline in HTML, not within XHTML
  // test page: paulirish.com/demo/inline-svg
  tests['inlinesvg'] = function () {
    var div = document.createElement('div');
    div.innerHTML = '<svg/>';
    return (div.firstChild && div.firstChild.namespaceURI) == ns.svg;
  };

  // Thanks to F1lt3r and lucideer, ticket #35
  tests['smil'] = function () {
    return !!document.createElementNS && /SVG/.test(toString.call(document.createElementNS(ns.svg, 'animate')));
  };

  tests['svgclippaths'] = function () {
    // Possibly returns a false positive in Safari 3.2?
    return !!document.createElementNS && /SVG/.test(toString.call(document.createElementNS(ns.svg, 'clipPath')));
  };

  // input features and input types go directly onto the ret object, bypassing the tests loop.
  // Hold this guy to execute in a moment.
  function webforms() {
    // Run through HTML5's new input attributes to see if the UA understands any.
    // We're using f which is the <input> element created early on
    // Mike Taylr has created a comprehensive resource for testing these attributes
    //   when applied to all input types:
    //   http://miketaylr.com/code/input-type-attr.html
    // spec: http://www.whatwg.org/specs/web-apps/current-work/multipage/the-input-element.html#input-type-attr-summary

    // Only input placeholder is tested while textarea's placeholder is not. 
    // Currently Safari 4 and Opera 11 have support only for the input placeholder
    // Both tests are available in feature-detects/forms-placeholder.js
    Modernizr['input'] = (function (props) {
      for (var i = 0, len = props.length; i < len; i++) {
        attrs[props[i]] = !!(props[i] in inputElem);
      }
      return attrs;
    })('autocomplete autofocus list placeholder max min multiple pattern required step'.split(' '));

    // Run through HTML5's new input types to see if the UA understands any.
    //   This is put behind the tests runloop because it doesn't return a
    //   true/false like all the other tests; instead, it returns an object
    //   containing each input type with its corresponding true/false value

    // Big thanks to @miketaylr for the html5 forms expertise. http://miketaylr.com/
    Modernizr['inputtypes'] = (function (props) {

      for (var i = 0, bool, inputElemType, defaultView, len = props.length; i < len; i++) {

        inputElem.setAttribute('type', inputElemType = props[i]);
        bool = inputElem.type !== 'text';

        // We first check to see if the type we give it sticks..
        // If the type does, we feed it a textual value, which shouldn't be valid.
        // If the value doesn't stick, we know there's input sanitization which infers a custom UI
        if (bool) {

          inputElem.value = smile;
          inputElem.style.cssText = 'position:absolute;visibility:hidden;';

          if (/^range$/.test(inputElemType) && inputElem.style.WebkitAppearance !== undefined) {

            docElement.appendChild(inputElem);
            defaultView = document.defaultView;

            // Safari 2-4 allows the smiley as a value, despite making a slider
            bool = defaultView.getComputedStyle &&
                              defaultView.getComputedStyle(inputElem, null).WebkitAppearance !== 'textfield' &&
            // Mobile android web browser has false positive, so must
            // check the height to see if the widget is actually there.
                              (inputElem.offsetHeight !== 0);

            docElement.removeChild(inputElem);

          } else if (/^(search|tel)$/.test(inputElemType)) {
            // Spec doesnt define any special parsing or detectable UI
            //   behaviors so we pass these through as true

            // Interestingly, opera fails the earlier test, so it doesn't
            //  even make it here.

          } else if (/^(url|email)$/.test(inputElemType)) {
            // Real url and email support comes with prebaked validation.
            bool = inputElem.checkValidity && inputElem.checkValidity() === false;

          } else if (/^color$/.test(inputElemType)) {
            // chuck into DOM and force reflow for Opera bug in 11.00
            // github.com/Modernizr/Modernizr/issues#issue/159
            docElement.appendChild(inputElem);
            docElement.offsetWidth;
            bool = inputElem.value != smile;
            docElement.removeChild(inputElem);

          } else {
            // If the upgraded input compontent rejects the :) text, we got a winner
            bool = inputElem.value != smile;
          }
        }

        inputs[props[i]] = !!bool;
      }
      return inputs;
    })('search tel url email datetime date month week time datetime-local number range color'.split(' '));
  }


  // End of test definitions
  // -----------------------



  // Run through all tests and detect their support in the current UA.
  // todo: hypothetically we could be doing an array of tests and use a basic loop here.
  for (var feature in tests) {
    if (hasOwnProperty(tests, feature)) {
      // run the test, throw the return value into the Modernizr,
      //   then based on that boolean, define an appropriate className
      //   and push it into an array of classes we'll join later.
      featureName = feature.toLowerCase();
      Modernizr[featureName] = tests[feature]();

      classes.push((Modernizr[featureName] ? '' : 'no-') + featureName);
    }
  }

  // input tests need to run.
  Modernizr.input || webforms();


  /**
  * addTest allows the user to define their own feature tests
  * the result will be added onto the Modernizr object,
  * as well as an appropriate className set on the html element
  *
  * @param feature - String naming the feature
  * @param test - Function returning true if feature is supported, false if not
  */
  Modernizr.addTest = function (feature, test) {
    if (typeof feature == "object") {
      for (var key in feature) {
        if (hasOwnProperty(feature, key)) {
          Modernizr.addTest(key, feature[key]);
        }
      }
    } else {

      feature = feature.toLowerCase();

      if (Modernizr[feature] !== undefined) {
        // we're going to quit if you're trying to overwrite an existing test
        // if we were to allow it, we'd do this:
        //   var re = new RegExp("\\b(no-)?" + feature + "\\b");  
        //   docElement.className = docElement.className.replace( re, '' );
        // but, no rly, stuff 'em.
        return;
      }

      test = typeof test == "boolean" ? test : !!test();

      docElement.className += ' ' + (test ? '' : 'no-') + feature;
      Modernizr[feature] = test;

    }

    return Modernizr; // allow chaining.
  };


  // Reset modElem.cssText to nothing to reduce memory footprint.
  setCss('');
  modElem = inputElem = null;

  //>>BEGIN IEPP
  // Enable HTML 5 elements for styling (and printing) in IE.
  if (window.attachEvent && (function () {
    var elem = document.createElement('div');
    elem.innerHTML = '<elem></elem>';
    return elem.childNodes.length !== 1;
  })()) {

    // iepp v2 by @jon_neal & afarkas : github.com/aFarkas/iepp/
    (function (win, doc) {
      win.iepp = win.iepp || {};
      var iepp = win.iepp,
            elems = iepp.html5elements || 'abbr|article|aside|audio|canvas|datalist|details|figcaption|figure|footer|header|hgroup|mark|meter|nav|output|progress|section|summary|time|video',
            elemsArr = elems.split('|'),
            elemsArrLen = elemsArr.length,
            elemRegExp = new RegExp('(^|\\s)(' + elems + ')', 'gi'),
            tagRegExp = new RegExp('<(\/*)(' + elems + ')', 'gi'),
            filterReg = /^\s*[\{\}]\s*$/,
            ruleRegExp = new RegExp('(^|[^\\n]*?\\s)(' + elems + ')([^\\n]*)({[\\n\\w\\W]*?})', 'gi'),
            docFrag = doc.createDocumentFragment(),
            html = doc.documentElement,
            head = html.firstChild,
            bodyElem = doc.createElement('body'),
            styleElem = doc.createElement('style'),
            printMedias = /print|all/,
            body;
      function shim(doc) {
        var a = -1;
        while (++a < elemsArrLen)
        // Use createElement so IE allows HTML5-named elements in a document
          doc.createElement(elemsArr[a]);
      }

      iepp.getCSS = function (styleSheetList, mediaType) {
        if (styleSheetList + '' === undefined) { return ''; }
        var a = -1,
              len = styleSheetList.length,
              styleSheet,
              cssTextArr = [];
        while (++a < len) {
          styleSheet = styleSheetList[a];
          //currently no test for disabled/alternate stylesheets
          if (styleSheet.disabled) { continue; }
          mediaType = styleSheet.media || mediaType;
          // Get css from all non-screen stylesheets and their imports
          if (printMedias.test(mediaType)) cssTextArr.push(iepp.getCSS(styleSheet.imports, mediaType), styleSheet.cssText);
          //reset mediaType to all with every new *not imported* stylesheet
          mediaType = 'all';
        }
        return cssTextArr.join('');
      };

      iepp.parseCSS = function (cssText) {
        var cssTextArr = [],
              rule;
        while ((rule = ruleRegExp.exec(cssText)) != null) {
          // Replace all html5 element references with iepp substitute classnames
          cssTextArr.push(((filterReg.exec(rule[1]) ? '\n' : rule[1]) + rule[2] + rule[3]).replace(elemRegExp, '$1.iepp_$2') + rule[4]);
        }
        return cssTextArr.join('\n');
      };

      iepp.writeHTML = function () {
        var a = -1;
        body = body || doc.body;
        while (++a < elemsArrLen) {
          var nodeList = doc.getElementsByTagName(elemsArr[a]),
                nodeListLen = nodeList.length,
                b = -1;
          while (++b < nodeListLen)
            if (nodeList[b].className.indexOf('iepp_') < 0)
            // Append iepp substitute classnames to all html5 elements
              nodeList[b].className += ' iepp_' + elemsArr[a];
        }
        docFrag.appendChild(body);
        html.appendChild(bodyElem);
        // Write iepp substitute print-safe document
        bodyElem.className = body.className;
        bodyElem.id = body.id;
        // Replace HTML5 elements with <font> which is print-safe and shouldn't conflict since it isn't part of html5
        bodyElem.innerHTML = body.innerHTML.replace(tagRegExp, '<$1font');
      };


      iepp._beforePrint = function () {
        // Write iepp custom print CSS
        styleElem.styleSheet.cssText = iepp.parseCSS(iepp.getCSS(doc.styleSheets, 'all'));
        iepp.writeHTML();
      };

      iepp.restoreHTML = function () {
        // Undo everything done in onbeforeprint
        bodyElem.innerHTML = '';
        html.removeChild(bodyElem);
        html.appendChild(body);
      };

      iepp._afterPrint = function () {
        // Undo everything done in onbeforeprint
        iepp.restoreHTML();
        styleElem.styleSheet.cssText = '';
      };



      // Shim the document and iepp fragment
      shim(doc);
      shim(docFrag);

      //
      if (iepp.disablePP) { return; }

      // Add iepp custom print style element
      head.insertBefore(styleElem, head.firstChild);
      styleElem.media = 'print';
      styleElem.className = 'iepp-printshim';
      win.attachEvent(
            'onbeforeprint',
            iepp._beforePrint
          );
      win.attachEvent(
            'onafterprint',
            iepp._afterPrint
          );
    })(window, document);
  }
  //>>END IEPP

  // Assign private properties to the return object with prefix
  Modernizr._version = version;

  // expose these for the plugin API. Look in the source for how to join() them against your input
  Modernizr._prefixes = prefixes;
  Modernizr._domPrefixes = domPrefixes;

  // Modernizr.mq tests a given media query, live against the current state of the window
  // A few important notes:
  //   * If a browser does not support media queries at all (eg. oldIE) the mq() will always return false
  //   * A max-width or orientation query will be evaluated against the current state, which may change later.
  //   * You must specify values. Eg. If you are testing support for the min-width media query use: 
  //       Modernizr.mq('(min-width:0)')
  // usage:
  // Modernizr.mq('only screen and (max-width:768)')
  Modernizr.mq = testMediaQuery;

  // Modernizr.hasEvent() detects support for a given event, with an optional element to test on
  // Modernizr.hasEvent('gesturestart', elem)
  Modernizr.hasEvent = isEventSupported;

  // Modernizr.testProp() investigates whether a given style property is recognized
  // Note that the property names must be provided in the camelCase variant.
  // Modernizr.testProp('pointerEvents')
  Modernizr.testProp = function (prop) {
    return testProps([prop]);
  };

  // Modernizr.testAllProps() investigates whether a given style property,
  //   or any of its vendor-prefixed variants, is recognized
  // Note that the property names must be provided in the camelCase variant.
  // Modernizr.testAllProps('boxSizing')    
  Modernizr.testAllProps = testPropsAll;



  // Modernizr.testStyles() allows you to add custom styles to the document and test an element afterwards
  // Modernizr.testStyles('#modernizr { position:absolute }', function(elem, rule){ ... })
  Modernizr.testStyles = injectElementWithStyles;


  // Modernizr.prefixed() returns the prefixed or nonprefixed property name variant of your input
  // Modernizr.prefixed('boxSizing') // 'MozBoxSizing'

  // Properties must be passed as dom-style camelcase, rather than `box-sizing` hypentated style.
  // Return values will also be the camelCase variant, if you need to translate that to hypenated style use:
  //
  //     str.replace(/([A-Z])/g, function(str,m1){ return '-' + m1.toLowerCase(); }).replace(/^ms-/,'-ms-');

  // If you're trying to ascertain which transition end event to bind to, you might do something like...
  // 
  //     var transEndEventNames = {
  //       'WebkitTransition' : 'webkitTransitionEnd',
  //       'MozTransition'    : 'transitionend',
  //       'OTransition'      : 'oTransitionEnd',
  //       'msTransition'     : 'msTransitionEnd', // maybe?
  //       'transition'       : 'transitionEnd'
  //     },
  //     transEndEventName = transEndEventNames[ Modernizr.prefixed('transition') ];

  Modernizr.prefixed = function (prop) {
    return testPropsAll(prop, 'pfx');
  };



  // Remove "no-js" class from <html> element, if it exists:
  docElement.className = docElement.className.replace(/\bno-js\b/, '')

  // Add the new classes to the <html> element.
                            + (enableClasses ? ' js ' + classes.join(' ') : '');

  return Modernizr;

})(this, this.document);

