function ShowUtils() {
        document.getElementById("authorinfo").style.display = "";
        document.getElementById("showinfo").style.display = "none";
        document.getElementById("hideinfo").style.display = "";
}

function HideUtils() {
        document.getElementById("authorinfo").style.display = "none";
        document.getElementById("showinfo").style.display = "";
        document.getElementById("hideinfo").style.display = "none";
}