var mmOpenContainer = null;
var mmOpenMenus = null;
var mmHideMenuTimer = null;

function MM_menuStartTimeout(hideTimeout) {
    mmHideMenuTimer = setTimeout("MM_menuHideMenus()", hideTimeout);
}

function MM_menuHideMenus() {
    MM_menuResetTimeout();
    if (mmOpenContainer) {
        var c = document.getElementById(mmOpenContainer);
        c.style.visibility = "inherit";
        mmOpenContainer = null;
    }
    if (mmOpenMenus) {
        for (var i in mmOpenMenus) {
            var m = document.getElementById(mmOpenMenus[i]);
            m.style.visibility = "hidden";
        }
        mmOpenMenus = null;
    }
}

function MM_menuHideSubmenus(menuName) {
    if (mmOpenMenus) {
        var h = false;
        var c = 0;
        for (var i in mmOpenMenus) {
            if (h) {
                var m = document.getElementById(mmOpenMenus[i]);
                m.style.visibility = "hidden";
            } else if (mmOpenMenus[i] == menuName) {
                h = true;
            } else {
                c++;
            }
        }
        mmOpenMenus.length = c + 1;
    }
}

function MM_menuOverMenuItem(menuName, subMenuSuffix) {
    MM_menuResetTimeout();
    MM_menuHideSubmenus(menuName);
    if (subMenuSuffix) {
        var subMenuName = "" + menuName + "_" + subMenuSuffix;
        MM_menuShowSubMenu(subMenuName);
    }
}

function MM_menuShowSubMenu(subMenuName) {
    MM_menuResetTimeout();
    var e = document.getElementById(subMenuName);
    e.style.visibility = "inherit";
    if (!mmOpenMenus) {
        mmOpenMenus = new Array;
    }
    mmOpenMenus[mmOpenMenus.length] = "" + subMenuName;
}

function MM_menuResetTimeout() {
    if (mmHideMenuTimer) clearTimeout(mmHideMenuTimer);
    mmHideMenuTimer = null;
}

function MM_menuShowMenu(containName, menuName, xOffset, yOffset, triggerName) {
    MM_menuHideMenus();
    MM_menuResetTimeout();
    MM_menuShowMenuContainer(containName, xOffset, yOffset, triggerName);
    MM_menuShowSubMenu(menuName);
}

function MM_menuShowMenuContainer(containName, x, y, triggerName) {
    var c = document.getElementById(containName);
    var s = c.style;
    s.visibility = "inherit";

    mmOpenContainer = "" + containName;
}