function fetch_object(idname)
{
    if (document.getElementById)
    {
        return document.getElementById(idname);
    }
    else if (document.all)
    {
        return document.all[idname];
    }
    else if (document.layers)
    {
        return document.layers[idname];
    }
    else
    {
        return null;
    }
}

function openClose(obj, legNr)
{
    var lock        = fetch_object("avdLock_"+legNr);

    if (lock.value == "Ö")
    {
        lock.value = "S";
        obj.innerHTML = "S";
        obj.style.backgroundColor = "red";
    }
    else
    {
        lock.value = "Ö";
        obj.innerHTML = "Ö";
        obj.style.backgroundColor = "green";
    }
    return true;
   
}