var timer = 0;
var resItem = 0;
var delay = 5000;

function showMenu(id) {
    mcancelclosetime();
    if (resItem) resItem.style.visibility = 'hidden';
    resItem = document.getElementById(id);
    resItem.style.visibility = 'visible';
}

function mclose() {
    if (resItem) resItem.style.visibility = 'hidden';
}

function delayedClose() {
    timer = window.setTimeout(mclose, delay);
}

function mcancelclosetime() {
    if (timer) {
        window.clearTimeout(timer);
        timer = null;
    }
}

document.onclick = mclose;