fn visit_url(s: &mut Cursive, url: &str) {
    s.pop_layer();

    match get_data(&url) {
        Ok(new_content) => {
            let mut select = SelectView::new()
                .h_align(HAlign::Left)
                .autojump();

            s.add_layer(Dialog::info(url));

            select.add_all_str(new_content.lines());
            select.set_on_submit(|s,line| {
                follow_link(s, line, url)
            });

            s.add_layer(
                Dialog::around(select.scrollable().full_screen()).title(url),
            );
        },
        Err(msg) => {
            s.add_layer(Dialog::info(msg));
        }
    }
}