YV ignore

turhat_ulisijat = ["Tahmatassu"];

var x = document.getElementsByClassName("threadauthor");

for (var i = 0, alt = false; i < x.length; i++) {
    li = x[i].parentNode;
    if (turhat_ulisijat.includes(x[i].children[0].children[0].getAttribute("alt"))) {
        li.style.display = "none";
        continue;
    }

    if (alt) {
        li.setAttribute("class", "alt");
    } else {
        li.removeAttribute("class");
    }
    alt = !alt;
}