function headerPage_onmouseover(obj_id) {
    for (i = 1; i < 6; i++) {
        if (obj_id == "ul" + i) {
            document.getElementById(obj_id).style.display = "block";
        }
        else {
            if (document.getElementById("ul" + i) != null) {
                document.getElementById("ul" + i).style.display = "none";
            }
        }
    }
}
function headerPage_onmouseout(obj_id) {
    if (document.getElementById(obj_id) != null) {
        document.getElementById(obj_id).style.display = "none";
    }
}