function NBmouseover(index)
{
	var normal = document.getElementById("menu_item_"+index+"_normal");
    var rollover = document.getElementById("menu_item_"+index+"_rollover");
    if (normal && rollover)
    {
        normal.style.display = "none";
        rollover.style.display = "block";
    }
    return true;
}

function NBmouseout(index)
{
    var normal = document.getElementById("menu_item_"+index+"_normal");
    var rollover = document.getElementById("menu_item_"+index+"_rollover");
    if (normal && rollover)
    {
        normal.style.display = "block";
        rollover.style.display = "none";
    }
    return true;
}

function NBmouseclick(index)
{
	var active = document.getElementById("menu_item_"+index);
    var normal = document.getElementById("menu_item_"+index+"_normal");
    var rollover = document.getElementById("menu_item_"+index+"_rollover");
    if (normal && rollover && active)
    {
    	active.style.display = "block";
        normal.style.display = "none";
        rollover.style.display = "none";
    }
    return true;
}

function setActive(menu)
{
	globalnav.className = menu;
}