「td」セルの複数のフッターの代わりに「th」タグを使用するのは意味的に間違っていますか?
例http://jsfiddle.net/marcelozep/DwsrS/
<table border="0">
<tr>
<td><a href='http://mpn.p.ht/wp_br2/?cat=7'><img src
= "http://mpn.p.ht/wp_br2/wp-content/themes/snapshot/images/m/polos_manga_curta.jpg" />
</a>
</td>
<td><a href='http://mpn.p.ht/wp_br2/?cat=8'><img src
= "http://mpn.p.ht/wp_br2/wp-content/themes/snapshot/images/m/polos_manga_longa.jpg" />
</a>
</td>
<td><a href='http://mpn.p.ht/wp_br2/?cat=9'><img src
= "http://mpn.p.ht/wp_br2/wp-content/themes/snapshot/images/m/camisetas.jpg" /></a></td>
</tr>
<tr>
<th><a href='http://mpn.p.ht/wp_br2/?
cat=7'>Pólos manga curta</a></th>
<th><a href='http://mpn.p.ht/wp_br2/?
cat=8'>Pólos manga longa</a></th>
<th><a href='http://mpn.p.ht/wp_br2/?
cat=9'>Camisetas</a></th>
</tr>
<tr>
<td><a href='http://mpn.p.ht/wp_br2/?cat=10'><img
src = "http://mpn.p.ht/wp_br2/wp-content/themes/snapshot/images/m/calcas.jpg" /></a>
</td>
<td><a href='http://mpn.p.ht/wp_br2/?cat=11'><img
src = "http://mpn.p.ht/wp_br2/wp-content/themes/snapshot/images/m/bermudas.jpg" /></a>
</td>
<td><a href='http://mpn.p.ht/wp_br2/?cat=12'><img
src = "http://mpn.p.ht/wp_br2/wp-content/themes/snapshot/images/m/jaquetas.jpg" /></a>
</td>
</tr>
<tr>
<th><a href='http://mpn.p.ht/wp_br2/?
cat=10'>Calças</a></th>
<th><a href='http://mpn.p.ht/wp_br2/?
cat=11'>Bermudas</a></th>
<th><a href='http://mpn.p.ht/wp_br2/?
cat=12'>Jaquetas</a></th>
</tr>
<tr>
<td><a href='http://mpn.p.ht/wp_br2/?cat=13'><img
src = "http://mpn.p.ht/wp_br2/wp-content/themes/snapshot/images/m/cardigans.jpg" /></a>
</td>
<td><a href='http://mpn.p.ht/wp_br2/?cat=14'><img
src = "http://mpn.p.ht/wp_br2/wp-content/themes/snapshot/images/m/blusoes.jpg" /></a>
</td>
<td><a href='http://mpn.p.ht/wp_br2/?cat=15'><img
src = "http://mpn.p.ht/wp_br2/wp-content/themes/snapshot/images/m/acessorios.jpg" /></a>
</td>
</tr>
<tr>
<th><a href='http://mpn.p.ht/wp_br2/?
cat=13'>Cardigans</a></th>
<th><a href='http://mpn.p.ht/wp_br2/?
cat=14'>Blusões</a></th>
<th><a href='http://mpn.p.ht/wp_br2/?
cat=15'>Acessórios</a></th>
</tr>
</table>
3 列 3 行のテーブルです。各行に「tfoot」を使用しようとしましたが、実際にはあまり意味がありません。
テーブルは、「td」セルに対して以下の「th」タグを使用して実行できますか?