function showMenu1() {
    document.getElementById("DivMenu1").style.visibility = "visible";
    document.getElementById("DivMenu2").style.visibility = "hidden";
    document.getElementById("DivMenu3").style.visibility = "hidden";
    document.getElementById("DivMenu4").style.visibility = "hidden";
    document.getElementById("DivMenu5").style.visibility = "hidden";
}
function showMenu2() {
    document.getElementById("DivMenu2").style.visibility = "visible";
    document.getElementById("DivMenu1").style.visibility = "hidden";
    document.getElementById("DivMenu3").style.visibility = "hidden";
    document.getElementById("DivMenu4").style.visibility = "hidden";
    document.getElementById("DivMenu5").style.visibility = "hidden";
}
function showMenu3() {
    document.getElementById("DivMenu3").style.visibility = "visible";
    document.getElementById("DivMenu2").style.visibility = "hidden";
    document.getElementById("DivMenu1").style.visibility = "hidden";
    document.getElementById("DivMenu4").style.visibility = "hidden";
    document.getElementById("DivMenu5").style.visibility = "hidden";
}
function showMenu4() {
    document.getElementById("DivMenu4").style.visibility = "visible";
    document.getElementById("DivMenu2").style.visibility = "hidden";
    document.getElementById("DivMenu3").style.visibility = "hidden";
    document.getElementById("DivMenu1").style.visibility = "hidden";
    document.getElementById("DivMenu5").style.visibility = "hidden";
}
function showMenu5() {
    document.getElementById("DivMenu5").style.visibility = "visible";
    document.getElementById("DivMenu2").style.visibility = "hidden";
    document.getElementById("DivMenu3").style.visibility = "hidden";
    document.getElementById("DivMenu4").style.visibility = "hidden";
    document.getElementById("DivMenu1").style.visibility = "hidden";
}

function hideMenu() {
    document.getElementById("DivMenu1").style.visibility = "hidden";
    document.getElementById("DivMenu2").style.visibility = "hidden";
    document.getElementById("DivMenu3").style.visibility = "hidden";
    document.getElementById("DivMenu4").style.visibility = "hidden";
    document.getElementById("DivMenu5").style.visibility = "hidden"; 
}