HN Page Structure

|- <tr class="athing comtr" id="commentID"><td><table border="0">
    |- <table><tr>
        |- <td class="ind"> indentation
        |- <td class="votelinks"> upvote button
        |- <td class="default">
            |- <div>
                |- <span class="comhead">
                    |- <a href="user?id=userID" class="hnuser">userID</a>
                    |- <span> HN companion author comment nav
                    |- <span class="age"> 1 hour ago
                    |- <span class="navs"> root, parent, prev, next
            |- <br/>
            |- <div class="comment">
                |- <div class="commtext c00">comment text