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/*!

 * Modernizr v2.8.3

 * www.modernizr.com

 *

 * Copyright (c) Faruk Ates, Paul Irish, Alex Sexton

 * Available under the BSD and 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 = '2.8.3',



    Modernizr = {},



    /*>>cssclasses*/

    // option for enabling the HTML classes to be added

    enableClasses = true,

    /*>>cssclasses*/



    docElement = document.documentElement,



    /**

     * 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 /*>>inputelem*/ = document.createElement('input') /*>>inputelem*/ ,



    /*>>smile*/

    smile = ':)',

    /*>>smile*/



    toString = {}.toString,



    // TODO :: make the prefixes more granular

    /*>>prefixes*/

    // List of property values to set for css tests. See ticket #21

    prefixes = ' -webkit- -moz- -o- -ms- '.split(' '),

    /*>>prefixes*/



    /*>>domprefixes*/

    // 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 uses a lowercase `ms` instead of the correct `Ms` in IE8+

    //   erik.eae.net/archives/2008/03/10/21.48.10/



    // More here: github.com/Modernizr/Modernizr/issues/issue/21

    omPrefixes = 'Webkit Moz O ms',



    cssomPrefixes = omPrefixes.split(' '),



    domPrefixes = omPrefixes.toLowerCase().split(' '),

    /*>>domprefixes*/



    /*>>ns*/

    ns = {'svg': 'http://www.w3.org/2000/svg'},

    /*>>ns*/



    tests = {},

    inputs = {},

    attrs = {},



    classes = [],



    slice = classes.slice,



    featureName, // used in testing loop





    /*>>teststyles*/

    // Inject element with style element and some CSS rules

    injectElementWithStyles = function( rule, callback, nodes, testnames ) {



      var style, ret, node, docOverflow,

          div = document.createElement('div'),

          // After page load injecting a fake body doesn't work so check if body exists

          body = document.body,

          // IE6 and 7 won't return offsetWidth or offsetHeight unless it's in the body element, so we fake it.

          fakeBody = body || document.createElement('body');



      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.

      // msdn.microsoft.com/en-us/library/ms533897%28VS.85%29.aspx

      // Documents served as xml will throw if using &shy; so use xml friendly encoded version. See issue #277

      style = ['&#173;','<style id="s', mod, '">', rule, '</style>'].join('');

      div.id = mod;

      // IE6 will false positive on some tests due to the style element inside the test div somehow interfering offsetHeight, so insert it into body or fakebody.

      // Opera will act all quirky when injecting elements in documentElement when page is served as xml, needs fakebody too. #270

      (body ? div : fakeBody).innerHTML += style;

      fakeBody.appendChild(div);

      if ( !body ) {

          //avoid crashing IE8, if background image is used

          fakeBody.style.background = '';

          //Safari 5.13/5.1.4 OSX stops loading if ::-webkit-scrollbar is used and scrollbars are visible

          fakeBody.style.overflow = 'hidden';

          docOverflow = docElement.style.overflow;

          docElement.style.overflow = 'hidden';

          docElement.appendChild(fakeBody);

      }



      ret = callback(div, rule);

      // If this is done after page load we don't want to remove the body so check if body exists

      if ( !body ) {

          fakeBody.parentNode.removeChild(fakeBody);

          docElement.style.overflow = docOverflow;

      } else {

          div.parentNode.removeChild(div);

      }



      return !!ret;



    },

    /*>>teststyles*/



    /*>>mq*/

    // adapted from matchMedia polyfill

    // by Scott Jehl and Paul Irish

    // gist.github.com/786768

    testMediaQuery = function( mq ) {



      var matchMedia = window.matchMedia || window.msMatchMedia;

      if ( matchMedia ) {

        return matchMedia(mq) && matchMedia(mq).matches || false;

      }



      var bool;



      injectElementWithStyles('@media ' + mq + ' { #' + mod + ' { position: absolute; } }', function( node ) {

        bool = (window.getComputedStyle ?

                  getComputedStyle(node, null) :

                  node.currentStyle)['position'] == 'absolute';

      });



      return bool;



     },

     /*>>mq*/





    /*>>hasevent*/

    //

    // isEventSupported determines if a given element supports the given event

    // kangax.github.com/iseventsupported/

    //

    // The following results are known incorrects:

    //   Modernizr.hasEvent("webkitTransitionEnd", elem) // false negative

    //   Modernizr.hasEvent("textInput") // in Webkit. github.com/Modernizr/Modernizr/issues/333

    //   ...

    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;

    })(),

    /*>>hasevent*/



    // TODO :: Add flag for hasownprop ? didn't last time



    // hasOwnProperty shim by kangax needed for Safari 2.0 support

    _hasOwnProperty = ({}).hasOwnProperty, hasOwnProp;



    if ( !is(_hasOwnProperty, 'undefined') && !is(_hasOwnProperty.call, 'undefined') ) {

      hasOwnProp = function (object, property) {

        return _hasOwnProperty.call(object, property);

      };

    }

    else {

      hasOwnProp = 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'));

      };

    }



    // Adapted from ES5-shim https://github.com/kriskowal/es5-shim/blob/master/es5-shim.js

    // es5.github.com/#x15.3.4.5



    if (!Function.prototype.bind) {

      Function.prototype.bind = function bind(that) {



        var target = this;



        if (typeof target != "function") {

            throw new TypeError();

        }



        var args = slice.call(arguments, 1),

            bound = function () {



            if (this instanceof bound) {



              var F = function(){};

              F.prototype = target.prototype;

              var self = new F();



              var result = target.apply(

                  self,

                  args.concat(slice.call(arguments))

              );

              if (Object(result) === result) {

                  return result;

              }

              return self;



            } else {



              return target.apply(

                  that,

                  args.concat(slice.call(arguments))

              );



            }



        };



        return bound;

      };

    }



    /**

     * 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);

    }



    /*>>testprop*/



    // testProps is a generic CSS / DOM property test.



    // 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.



    // Because the testing of the CSS property names (with "-", as

    // opposed to the camelCase DOM properties) is non-portable and

    // non-standard but works in WebKit and IE (but not Gecko or Opera),

    // we explicitly reject properties with dashes so that authors

    // developing in WebKit or IE first don't end up with

    // browser-specific content by accident.



    function testProps( props, prefixed ) {

        for ( var i in props ) {

            var prop = props[i];

            if ( !contains(prop, "-") && mStyle[prop] !== undefined ) {

                return prefixed == 'pfx' ? prop : true;

            }

        }

        return false;

    }

    /*>>testprop*/



    // TODO :: add testDOMProps

    /**

     * testDOMProps is a generic DOM property test; if a browser supports

     *   a certain property, it won't return undefined for it.

     */

    function testDOMProps( props, obj, elem ) {

        for ( var i in props ) {

            var item = obj[props[i]];

            if ( item !== undefined) {



                // return the property name as a string

                if (elem === false) return props[i];



                // let's bind a function

                if (is(item, 'function')){

                  // default to autobind unless override

                  return item.bind(elem || obj);

                }



                // return the unbound function or obj or value

                return item;

            }

        }

        return false;

    }



    /*>>testallprops*/

    /**

     * 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, elem ) {



        var ucProp  = prop.charAt(0).toUpperCase() + prop.slice(1),

            props   = (prop + ' ' + cssomPrefixes.join(ucProp + ' ') + ucProp).split(' ');



        // did they call .prefixed('boxSizing') or are we just testing a prop?

        if(is(prefixed, "string") || is(prefixed, "undefined")) {

          return testProps(props, prefixed);



        // otherwise, they called .prefixed('requestAnimationFrame', window[, elem])

        } else {

          props = (prop + ' ' + (domPrefixes).join(ucProp + ' ') + ucProp).split(' ');

          return testDOMProps(props, prefixed, elem);

        }

    }

    /*>>testallprops*/





    /**

     * Tests

     * -----

     */



    // The *new* flexbox

    // dev.w3.org/csswg/css3-flexbox



    tests['flexbox'] = function() {

      return testPropsAll('flexWrap');

    };



    // The *old* flexbox

    // www.w3.org/TR/2009/WD-css3-flexbox-20090723/



    tests['flexboxlegacy'] = function() {

        return testPropsAll('boxDirection');

    };



    // On the S60 and BB Storm, getContext exists, but always returns undefined

    // so we actually have to call getContext() to verify

    // 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'));

    };



    // webk.it/70117 is tracking a legit WebGL feature detect proposal



    // We do a soft detect which may false positive in order to avoid

    // an expensive context creation: bugzil.la/732441



    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: crbug.com/36415

     *

     * We also test for Firefox 4 Multitouch Support.

     *

     * For more info, see: modernizr.github.com/Modernizr/touch.html

     */



    tests['touch'] = function() {

        var bool;



        if(('ontouchstart' in window) || window.DocumentTouch && document instanceof DocumentTouch) {

          bool = true;

        } else {

          injectElementWithStyles(['@media (',prefixes.join('touch-enabled),('),mod,')','{#modernizr{top:9px;position:absolute}}'].join(''), function( node ) {

            bool = node.offsetTop === 9;

          });

        }



        return bool;

    };





    // geolocation is often considered a trivial feature detect...

    // Turns out, it's quite tricky to get right:

    //

    // Using !!navigator.geolocation does two things we don't want. It:

    //   1. Leaks memory in IE9: github.com/Modernizr/Modernizr/issues/513

    //   2. Disables page caching in WebKit: webk.it/43956

    //

    // Meanwhile, in Firefox < 8, an about:config setting could expose

    // a false positive that would throw an exception: bugzil.la/688158



    tests['geolocation'] = function() {

        return 'geolocation' in navigator;

    };





    tests['postmessage'] = function() {

      return !!window.postMessage;

    };





    // Chrome incognito mode used to throw an exception when using openDatabase

    // It doesn't anymore.

    tests['websqldatabase'] = function() {

      return !!window.openDatabase;

    };



    // 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() {

      return !!testPropsAll("indexedDB", window);

    };



    // 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() {

        var div = document.createElement('div');

        return ('draggable' in div) || ('ondragstart' in div && 'ondrop' in div);

    };



    // FF3.6 was EOL'ed on 4/24/12, but the ESR version of FF10

    // will be supported until FF19 (2/12/13), at which time, ESR becomes FF17.

    // FF10 still uses prefixes, so check for it until then.

    // for more ESR info, see: mozilla.org/en-US/firefox/organizations/faq/

    tests['websockets'] = function() {

        return 'WebSocket' in window || 'MozWebSocket' in window;

    };





    // 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);

    };







    // this will false positive in Opera Mini

    //   github.com/Modernizr/Modernizr/issues/396



    tests['backgroundsize'] = function() {

        return testPropsAll('backgroundSize');

    };



    tests['borderimage'] = function() {

        return testPropsAll('borderImage');

    };





    // Super comprehensive table about all the unique implementations of

    // border-radius: 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

        // github.com/Modernizr/Modernizr/issues/#issue/59/comment/516632

        return (/^0.55$/).test(mStyle.opacity);

    };





    // Note, Android < 4 will pass this test, but can only animate

    //   a single property at a time

    //   goo.gl/v3V4Gp

    tests['cssanimations'] = function() {

        return testPropsAll('animationName');

    };





    tests['csscolumns'] = function() {

        return testPropsAll('columnCount');

    };





    tests['cssgradients'] = function() {

        /**

         * For CSS Gradients syntax, please see:

         * webkit.org/blog/175/introducing-css-gradients/

         * developer.mozilla.org/en/CSS/-moz-linear-gradient

         * developer.mozilla.org/en/CSS/-moz-radial-gradient

         * 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(

             // legacy webkit syntax (FIXME: remove when syntax not in use anymore)

              (str1 + '-webkit- '.split(' ').join(str2 + str1) +

             // standard syntax             // trailing 'background-image:'

              prefixes.join(str3 + str1)).slice(0, -str1.length)

        );



        return contains(mStyle.backgroundImage, 'gradient');

    };





    tests['cssreflections'] = function() {

        return testPropsAll('boxReflect');

    };





    tests['csstransforms'] = function() {

        return !!testPropsAll('transform');

    };





    tests['csstransforms3d'] = function() {



        var ret = !!testPropsAll('perspective');



        // 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),(-webkit-transform-3d){ ... }`

          injectElementWithStyles('@media (transform-3d),(-webkit-transform-3d){#modernizr{left:9px;position:absolute;height:3px;}}', function( node, rule ) {

            ret = node.offsetLeft === 9 && node.offsetHeight === 3;

          });

        }

        return ret;

    };





    tests['csstransitions'] = function() {

        return testPropsAll('transition');

    };





    /*>>fontface*/

    // @font-face detection routine by Diego Perini

    // javascript.nwbox.com/CSSSupport/



    // false positives:

    //   WebOS github.com/Modernizr/Modernizr/issues/342

    //   WP7   github.com/Modernizr/Modernizr/issues/538

    tests['fontface'] = function() {

        var bool;



        injectElementWithStyles('@font-face {font-family:"font";src:url("https://")}', function( node, rule ) {

          var style = document.getElementById('smodernizr'),

              sheet = style.sheet || style.styleSheet,

              cssText = sheet ? (sheet.cssRules && sheet.cssRules[0] ? sheet.cssRules[0].cssText : sheet.cssText || '') : '';



          bool = /src/i.test(cssText) && cssText.indexOf(rule.split(' ')[0]) === 0;

        });



        return bool;

    };

    /*>>fontface*/



    // CSS generated content detection

    tests['generatedcontent'] = function() {

        var bool;



        injectElementWithStyles(['#',mod,'{font:0/0 a}#',mod,':after{content:"',smile,'";visibility:hidden;font:3px/1 a}'].join(''), function( node ) {

          bool = node.offsetHeight >= 3;

        });



        return bool;

    };







    // 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 : github.com/NielsLeenheer/html5test/blob/9106a8/index.html#L845

    //                     thx to NielsLeenheer and zcorpan



    // Note: in some older browsers, "no" was a return value instead of empty string.

    //   It was live in FF3.5.0 and 3.5.1, but fixed in 3.5.2

    //   It was also live in Safari 4.0.0 - 4.0.4, but fixed in 4.0.5



    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"')      .replace(/^no$/,'');



                // Without QuickTime, this value will be `undefined`. github.com/Modernizr/Modernizr/issues/546

                bool.h264 = elem.canPlayType('video/mp4; codecs="avc1.42E01E"') .replace(/^no$/,'');



                bool.webm = elem.canPlayType('video/webm; codecs="vp8, vorbis"').replace(/^no$/,'');

            }



        } 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"').replace(/^no$/,'');

                bool.mp3  = elem.canPlayType('audio/mpeg;')               .replace(/^no$/,'');



                // Mimetypes accepted:

                //   developer.mozilla.org/En/Media_formats_supported_by_the_audio_and_video_elements

                //   bit.ly/iphoneoscodecs

                bool.wav  = elem.canPlayType('audio/wav; codecs="1"')     .replace(/^no$/,'');

                bool.m4a  = ( elem.canPlayType('audio/x-m4a;')            ||

                              elem.canPlayType('audio/aac;'))             .replace(/^no$/,'');

            }

        } catch(e) { }



        return bool;

    };





    // 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 bugzil.la/365772 if cookies are disabled



    // Also in iOS5 Private Browsing mode, attempting to use localStorage.setItem

    // will throw the exception:

    //   QUOTA_EXCEEDED_ERRROR DOM Exception 22.

    // Peculiarly, getItem and removeItem calls do not throw.



    // Because we are forced to try/catch this, we'll go aggressive.



    // Just FWIW: IE8 Compat mode supports these features completely:

    //   www.quirksmode.org/dom/html5.html

    // But IE8 doesn't support either with local files



    tests['localstorage'] = function() {

        try {

            localStorage.setItem(mod, mod);

            localStorage.removeItem(mod);

            return true;

        } catch(e) {

            return false;

        }

    };



    tests['sessionstorage'] = function() {

        try {

            sessionStorage.setItem(mod, mod);

            sessionStorage.removeItem(mod);

            return true;

        } 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;

    };



    // SVG SMIL animation

    tests['smil'] = function() {

        return !!document.createElementNS && /SVGAnimate/.test(toString.call(document.createElementNS(ns.svg, 'animate')));

    };



    // This test is only for clip paths in SVG proper, not clip paths on HTML content

    // demo: srufaculty.sru.edu/david.dailey/svg/newstuff/clipPath4.svg



    // However read the comments to dig into applying SVG clippaths to HTML content here:

    //   github.com/Modernizr/Modernizr/issues/213#issuecomment-1149491

    tests['svgclippaths'] = function() {

        return !!document.createElementNS && /SVGClipPath/.test(toString.call(document.createElementNS(ns.svg, 'clipPath')));

    };



    /*>>webforms*/

    // 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() {

        /*>>input*/

        // 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:

        //   miketaylr.com/code/input-type-attr.html

        // spec: 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);

            }

            if (attrs.list){

              // safari false positive's on datalist: webk.it/74252

              // see also github.com/Modernizr/Modernizr/issues/146

              attrs.list = !!(document.createElement('datalist') && window.HTMLDataListElement);

            }

            return attrs;

        })('autocomplete autofocus list placeholder max min multiple pattern required step'.split(' '));

        /*>>input*/



        /*>>inputtypes*/

        // 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. 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 doesn't 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 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(' '));

        /*>>inputtypes*/

    }

    /*>>webforms*/





    // 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 ( hasOwnProp(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);

        }

    }



    /*>>webforms*/

    // input tests need to run.

    Modernizr.input || webforms();

    /*>>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 ( hasOwnProp( 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 Modernizr;

         }



         test = typeof test == 'function' ? test() : test;



         if (typeof enableClasses !== "undefined" && enableClasses) {

           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;



    /*>>shiv*/

    /**

     * @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));

    /*>>shiv*/



    // 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

    /*>>prefixes*/

    Modernizr._prefixes     = prefixes;

    /*>>prefixes*/

    /*>>domprefixes*/

    Modernizr._domPrefixes  = domPrefixes;

    Modernizr._cssomPrefixes  = cssomPrefixes;

    /*>>domprefixes*/



    /*>>mq*/

    // 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;

    /*>>mq*/



    /*>>hasevent*/

    // Modernizr.hasEvent() detects support for a given event, with an optional element to test on

    // Modernizr.hasEvent('gesturestart', elem)

    Modernizr.hasEvent      = isEventSupported;

    /*>>hasevent*/



    /*>>testprop*/

    // 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]);

    };

    /*>>testprop*/



    /*>>testallprops*/

    // 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;

    /*>>testallprops*/





    /*>>teststyles*/

    // 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;

    /*>>teststyles*/





    /*>>prefixed*/

    // 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',

    //       'transition'       : 'transitionend'

    //     },

    //     transEndEventName = transEndEventNames[ Modernizr.prefixed('transition') ];



    Modernizr.prefixed      = function(prop, obj, elem){

      if(!obj) {

        return testPropsAll(prop, 'pfx');

      } else {

        // Testing DOM property e.g. Modernizr.prefixed('requestAnimationFrame', window) // 'mozRequestAnimationFrame'

        return testPropsAll(prop, obj, elem);

      }

    };

    /*>>prefixed*/





    /*>>cssclasses*/

    // Remove "no-js" class from <html> element, if it exists:

    docElement.className = docElement.className.replace(/(^|\s)no-js(\s|$)/, '$1$2') +



                            // Add the new classes to the <html> element.

                            (enableClasses ? ' js ' + classes.join(' ') : '');

    /*>>cssclasses*/



    return Modernizr;



})(this, this.document);