<!--function show_drop_down_menu(menu_id, link_id){    if (document.getElementById(menu_id)) {        var left = getOffsetLeft(link_id) + 'px';        var top = getOffsetTop(link_id) + document.getElementById(link_id).offsetHeight + 'px';        document.getElementById(menu_id).style.left = left;        document.getElementById(menu_id).style.top = top;        document.getElementById(link_id).style.backgroundColor = '#0055a5';        document.getElementById(menu_id).style.visibility = 'visible';    }}function hide_drop_down_menu(menu_id, link_id){    if (document.getElementById(menu_id)) {        document.getElementById(menu_id).style.visibility = 'hidden';        document.getElementById(link_id).style.backgroundColor = '';    }}function getOffsetTop(element){    el = document.getElementById(element);    xPos = el.offsetTop;    tempEl = el.offsetParent;    while (tempEl != null) {        xPos += tempEl.offsetTop;        tempEl = tempEl.offsetParent;    }    return xPos;}function getOffsetLeft(element){    el = document.getElementById(element);    xPos = el.offsetLeft;    tempEl = el.offsetParent;    while (tempEl != null) {        xPos += tempEl.offsetLeft;        tempEl = tempEl.offsetParent;    }    return xPos;}//-->