var xcol_cur_menu = null;
var xcol_cur_submenu = null;

function show(id, subid, selected) {
    if (!isDOMcompliant()) { return; }
    var menu = document.getElementById("Menu" + id);
    var menus = document.getElementById("NavMenuList");
    var submenu = (subid >= 0) ?  menus.getElementsByTagName("ul").item(subid) : null;
    if (xcol_cur_submenu == null && submenu) {
        submenu.style.visibility = "visible";
    } 
    else if (xcol_cur_submenu && typeof(subid) == 'undefined') {
      xcol_cur_submenu.style.visibility = "hidden";
    }
    else if (submenu) {
        xcol_cur_submenu.style.visibility = "hidden";
        submenu.style.visibility = "visible";
        if (selected) {
            submenu.className = 'NavSubMenuList_blue';
            selected_menu = selected;
        }
    }
    if (xcol_cur_menu == null) {
        menu.style.backgroundColor = "#68BACF";
        menu.style.color = "#000";
    } else {
        xcol_cur_menu.style.backgroundColor = "#000";
        xcol_cur_menu.style.color = "#FFF";
        menu.style.backgroundColor = "#FFD92E";
        menu.style.color = "#000";
    }
    xcol_cur_menu = menu;
  
    if (typeof(subid) != 'undefined')
      xcol_cur_submenu = submenu;

}

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