function show_b(e, url, title) {
    var html = "<div style=\"background: #eee; padding: .5em; border: solid 1px black\"><p>"
    + "<strong><a href='" + url + "'>" + title + "<br /><span style='font-size: 70%;padding : 1em;'>" + url + "</span></a></strong></p></div>";
    _set_html_and_position(e, html);
    return setTimeout('hide_b()', 5000);
}

function _set_html_and_position(e, html) {
    var posx = 0;
    var posy = 0;
    if (!e) var e = window.event;
    if (e.pageX || e.pageY)
    {
        posx = e.pageX;
        posy = e.pageY;
    }
    else if (e.clientX || e.clientY)
    {
        posx = e.clientX + document.body.scrollLeft;
        posy = e.clientY + document.body.scrollTop;
    };
    _popup(html,posx,posy);
}

function _popup(html, posx, posy) {
    document.getElementById("_balloon").innerHTML = html;
    document.getElementById("_balloon").style.left = posx;
    document.getElementById("_balloon").style.top  = posy - 5;
}

function hide_b() {
    document.getElementById("_balloon").style.top="-500";
}