function isIE() {
    return (navigator.appName=="Microsoft Internet Explorer");
}

function overMenuItem(itemName) {
    var eDiv = document.getElementById("div_menuItem_" + itemName);
    var eA = document.getElementById("a_menuItem_" + itemName);
    eDiv.style.backgroundColor = "#233F92";
    eA.style.color = "#FECF0D";
}
function outMenuItem(itemName) {
    var eDiv = document.getElementById("div_menuItem_" + itemName);
    var eA = document.getElementById("a_menuItem_" + itemName);
    eA.style.color = "";
    eDiv.style.backgroundColor = "transparent";
}
function hideAllMenus() {
    var menuIDs = getMenuIDs();
    for (i = 0; i < menuIDs.length; i++) {
        if (isIE()) {
            document.getElementById("iframe_" + menuIDs[i]).style.display = "none";
            document.getElementById("iframe_" + menuIDs[i]).style.visibility = "hidden";
        }
        document.getElementById(menuIDs[i]).style.visibility = "hidden";
    }
}
function showMenu(id) {
    hideAllMenus();
    var divMenu = document.getElementById(id);
    if (parseInt(divMenu.style.width) > 0) {
        if (isIE()) {
            var iFrame = document.getElementById("iframe_" + id);
            iFrame.style.display = "block";
            iFrame.style.visibility = "visible";
            iFrame.style.width = divMenu.offsetWidth + 'px';
            iFrame.style.height = divMenu.offsetHeight + 'px';
        }
        divMenu.style.visibility = "visible";
    }
}
function hideMenu(id) {
    if (isIE()) {
        document.getElementById("iframe_" + id).style.display = "none";
        document.getElementById("iframe_" + id).style.visibility = "hidden";
    }
    document.getElementById(id).style.visibility = "hidden";
}