var xcol_cur_menu = null;
var xcol_cur_submenu1 = null;
var xcol_cur_submenu2 = null;

function show(id,id1,id2)
{
    if (!isDOMcompliant()) { return; }
    var menu = document.getElementById("Menu" + id);
    var menus = document.getElementById("NavMenuList");
    var submenu1 = menus.getElementsByTagName("ul").item(id1);
    var submenu2 = menus.getElementsByTagName("ul").item(id2);
    if (xcol_cur_submenu1 == null) {
        submenu1.style.visibility = "visible";
        submenu2.style.visibility = "visible";
    } else {
        xcol_cur_submenu1.style.visibility = "hidden";
        xcol_cur_submenu2.style.visibility = "hidden";
        submenu1.style.visibility = "visible";
        submenu2.style.visibility = "visible";
    }

    if (xcol_cur_menu == null) {
        menu.style.backgroundColor = "#FFFFFF";
        menu.style.color = "#000000";
    } else {
        xcol_cur_menu.style.backgroundColor = "#666699";
        xcol_cur_menu.style.color = "#ACD58A";
        menu.style.backgroundColor = "#FFFFFF";
        menu.style.color = "#000000";
    }

    xcol_cur_menu = menu;
    xcol_cur_submenu1 = submenu1;
    xcol_cur_submenu2 = submenu2;
}

function isDOMcompliant()
{
    return document.getElementById && document.getElementsByTagName;
}