/**
   * Change the size of this image. This alters the HEIGHT and WIDTH attributes of the Element and
   * causes a re-layout.
   */
  protected void resize(int width, int height) {
    if (width == fWidth && height == fHeight) return;

    fWidth = width;
    fHeight = height;

    // Replace attributes in document:
    MutableAttributeSet attr = new SimpleAttributeSet();
    attr.addAttribute(HTML.Attribute.WIDTH, Integer.toString(width));
    attr.addAttribute(HTML.Attribute.HEIGHT, Integer.toString(height));
    ((StyledDocument) getDocument())
        .setCharacterAttributes(fElement.getStartOffset(), fElement.getEndOffset(), attr, false);
  }
 @Override
 public void handleStartTag(HTML.Tag tag, MutableAttributeSet attr, int pos) {
   // <B>が出たら次の地の文はカテゴリ名。なのでフラグを立てる。
   if (tag.equals(HTML.Tag.B)) {
     start_bold = true;
     start_category_flag = true;
   }
   // <A>タグが出たらurlを保持。あとで板名とペアにする。
   if (tag.equals(HTML.Tag.A)) {
     // 頭についてる広告タグは無視。
     if (parse_2ch_start_flag) {
       String href = (String) attr.getAttribute(HTML.Attribute.HREF);
       next_board_url = href;
     }
   }
 }