function whichElement(e)
{
    var targ;
    if (!e)
    {
        var e=window.event;
    }
    
    if (e.target)
    {
        targ=e.target;
    }
    else if (e.srcElement)
    {
        targ=e.srcElement;
    }
    if (targ.nodeType==3) // defeat Safari bug
    {
        targ = targ.parentNode;
    }

    try
    {
        if(targ.nextSibling.nextSibling.className == "visivel")
        {
            targ.nextSibling.nextSibling.className = "invisivel";
        }
        else if(targ.nextSibling.nextSibling.className == "invisivel")
        {
            targ.nextSibling.nextSibling.className = "visivel";
        }
    }
    catch(err){}
}

function menuAbreFecha(obj)
{
    if (obj.nextSibling != null)
    {
        if(obj.nextSibling.className == "visivel")
        {
            obj.nextSibling.className = "invisivel";
        }
        else if(obj.nextSibling.className == "invisivel")
        {
            obj.nextSibling.className = "visivel";
        }
    }
    else
    {
        window.location = obj.previousSibling.value;
    }
}