document.addEventListener("DOMContentLoaded", function() {
document.querySelectorAll('a').forEach(function(element) {
    const myhost = window.location.hostname;
    const linkhost=new URL(element.href).hostname;
    if(myhost === linkhost) {
        let prefetchUrl=new URL(element.href).toString()
        // lest make a prefetch tag for this url
        let link = document.createElement('link');
        link.setAttribute('rel', 'prefetch');
        link.setAttribute('href', prefetchUrl);
        link.setAttribute('as', 'document');
        document.head.appendChild(link);
        element.classList.add("internal");
    }else {
        element.setAttribute("target", "_blank");
        element.classList.add("external");
    }
})
});