function menu_show(current)
{    
    clearTimeout(t);
    var submenu;
    var divmenu;
    var TopNav =  document.getElementById('TopNav').getElementsByTagName("li");    
    var TopSub =  document.getElementById('TopSub').getElementsByTagName("ul");
    for(var i=0;i<TopSub.length;i++){
        TopSub[i].style.display='none';
        TopNav[i].className = "normal";         
    }
    submenu=document.getElementById('s'+current);
    if(submenu){submenu.style.display='';}
    divmenu=document.getElementById('d'+current);
    if(divmenu){divmenu.className='active';}
 }
var isOverMenu = false;
var t;
function menu_hide(){t = setTimeout('menu_init()', 100);}
function menu_init()
{
    if (isOverMenu) return;    
    var current = document.getElementById('submenu_current');   
    menu_show(current.value);         
}

window.onload = function(){menu_init();}

function FocusSub(id)
{
    var sub = document.getElementById(id);
    if (sub) sub.className = 'submenuActive';
}

function setHomepage() {
    if (document.all) {
        document.body.style.behavior = 'url(#default#homepage)';
        document.body.setHomePage('http://iwe.vn');

    }
    else if (window.sidebar) {
        if (window.netscape) {
            try {
                netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
            }
            catch (e) {
                alert("Trình duyệt không hỗ trợ");
            }
        }
        var prefs = Components.classes['@mozilla.org/preferences-service;1'].getService(Components.interfaces.nsIPrefBranch);
        prefs.setCharPref('browser.startup.homepage', 'http://iwe.vn');
    }
}