var focus_removed = false;
function remove_focus_select() {
    focus_removed = false;
    set_focus_to_nav();
}
function set_focus_to_nav() {
    if (typeof(parent.frames.nav)!='undefined' && focus_removed!=true) {
        parent.frames.nav.focus();
        focus_removed=true;
    } else {
        focus_removed=false;
        setTimeout("set_focus_to_nav();",500);
    }
}