function initmenus() {
    var ul = document.getElementsByTagName("ul");
    var li;
    for (var c = 0; c < ul.length; c++) {
        if (ul[c].className == "menuhead") {
            for (var i = 0; i < ul[c].childNodes.length; i++) {
                if (ul[c].childNodes[i].tagName == "LI") {
                    ul[c].childNodes[i].onmouseover = showmenu;
                    ul[c].childNodes[i].onmouseout = hidemenu;
                }
            }
        }
    }
}

function showmenu() {
    var menu = this.getElementsByTagName("ul");
    if (menu[0]) {
        menu[0].style.display = "block";
    }
}

function hidemenu() {
    var menu = this.getElementsByTagName("ul");
    if (menu[0]) {
        menu[0].style.display = "none";
    }
}