$(document).ready(function() {
    // html5 feature support
    for (var k in html5)
        console.log(k, '...', html5[k]);
});

(function(window, document, navigator, undefined) {
    var html5 = {
        appcache:   !!window.applicationCache,
        geolocate:  !!navigator.geolocation,
        workers:    !!window.Worker,
        localstore: ('localStorage' in window) && (window['localStorage'] !== null),
    };
    // expose
    window.html5 = html5;
})(this, document, navigator);