var iex = document.all ? true : false;
var timerID;

function hideAll() {
    if (!iex) {
        navMenuDivs = document.getElementsByName("navMenuDiv");
        for (i=0; i<navMenuDivs.length; i++) {
            navMenuDivs.item(i).style.display = 'none';
        }
    } else if (iex) {
        navMenuDivs = document.getElementsByTagName("div");
        for (i=0; i<navMenuDivs.length; i++) {
            if (navMenuDivs.item(i).name=="navMenuDiv")
                navMenuDivs.item(i).style.display = 'none'
        }
    }
}

function hideAndShow(nomeDiv) {
    clearTimeout(timerID);
    hideAll();
    targetDiv = iex ? document.all(nomeDiv) : document.getElementById(nomeDiv);
    if (targetDiv) targetDiv.style.display = "block";
    timerID = window.setTimeout("hideAll()",5000);
}

function show(nomeDiv) {
    clearTimeout(timerID);
    targetDiv = iex ? document.all(nomeDiv) : document.getElementById(nomeDiv);
    if (targetDiv) targetDiv.style.display = "block";
    timerID = window.setTimeout("hideAll()",5000);
}

function nascondiBottone() {
	document.getElementById("botIst").style.visibility = "hidden";
	document.getElementById("botLev").style.visibility = "hidden";
}