function ipv6test() {
    var url='http://ipv6.cablelabs.com/lib/js/ipv6Enabled.js';
    headElement = document.getElementsByTagName("head").item(0);
    var scriptTag = document.createElement("script");
    scriptTag.setAttribute("id", "ipv6Test");
    scriptTag.setAttribute("type", "text/javascript");
    scriptTag.setAttribute("src", url);
    headElement.appendChild(scriptTag);
}
setTimeout("ipv6test()",10)