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        // 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);