function checkVideo() {

    if (!!document.createElement('video').canPlayType) {

        var vidTest = document.createElement("video");

        oggTest = vidTest.canPlayType('video/ogg; codecs="theora, vorbis"');

        if (!oggTest) {

            h264Test = vidTest.canPlayType('video/mp4; codecs="avc1.42E01E, mp4a.40.2"');

            if (!h264Test) {

                document.getElementById("checkVideoResult").innerHTML = "Sorry. No video support.";

            } else {

                if (h264Test == "probably") {

                    document.getElementById("checkVideoResult").innerHTML = "Yes! Full support!";

                } else {

                    document.getElementById("checkVideoResult").innerHTML = "Well. Some support.";

                }

            }

        } else {

            if (oggTest == "probably") {

                document.getElementById("checkVideoResult").innerHTML = "Yes! Full support!";

            } else {

                document.getElementById("checkVideoResult").innerHTML = "Well. Some support.";

            }

        }

    } else {

        document.getElementById("checkVideoResult").innerHTML = "Sorry. No video support.";

    }

}