protected void Add_Page(object sender, EventArgs e)
        {
            htmldb db = new htmldb();

            HTTP_Page new_page = new HTTP_Page();

            new_page.SetPageTitle(html_title.Text);
            new_page.SetPageBody(html_body.Text);

            db.Add_Page(new_page);

            Response.Redirect("list_pages.aspx");
        }