function documentReady() {
    if (isSafari()) {
        document.getElementById("videoNative").style.display = "inline-block";
    }
    else {
        document.getElementById("videoFlash").style.display = "inline-block";
    }
}


function isSafari() {
    var agent = navigator.userAgent.toLowerCase();
    
    if (agent.search("safari") > -1)
        return true;
    else
        return false;
}