window.onload = function()
{
    const search_engine = "https://www.startpage.com/do/asearch?q=";
    const domain = "oskog97.com";  // Add a site: operator here if you want.
    
    var this_page = location.href.replace(location.origin,'');
    var search_query = domain + this_page.replace(/[^A-Za-z0-9]/g, "+");
    // There is always a leading slash in this_page. No need to add anything.
    
    var iframe = document.querySelector("iframe#autosearch");
    iframe.setAttribute("src", search_engine + search_query);
};