<style type="text/css">
.img
{
opacity:0.4;
filter:alpha(opacity=40);
}
</style>
<table border="0" cellpadding="0" cellspacing="0">
  <tr>
    <td><img src="imagem/suaimagem1.jpg" alt="klematis" width="195" height="250" class="img"
onmouseover="this.style.opacity=1;this.filters.alpha.opacity=100"
onmouseout="this.style.opacity=0.4;this.filters.alpha.opacity=40" /></td>
    <td><img src="imagem/suaimagem2.jpg" alt="klematis" width="195" height="250" class="img"
onmouseover="this.style.opacity=1;this.filters.alpha.opacity=100"
onmouseout="this.style.opacity=0.4;this.filters.alpha.opacity=40" /></td>
    <td><img src="imagem/suaimagem3.jpg" alt="klematis" width="195" height="250" class="img"
onmouseover="this.style.opacity=1;this.filters.alpha.opacity=100"
onmouseout="this.style.opacity=0.4;this.filters.alpha.opacity=40" /></td>
    <td><img src="imagem/suaimagem4.jpg" alt="klematis" width="195" height="250" class="img"
onmouseover="this.style.opacity=1;this.filters.alpha.opacity=100"
onmouseout="this.style.opacity=0.4;this.filters.alpha.opacity=40" /></td>
    <td><img src="imagem/suaimagem5.jpg" alt="klematis" width="195" height="250" class="img"
onmouseover="this.style.opacity=1;this.filters.alpha.opacity=100"
onmouseout="this.style.opacity=0.4;this.filters.alpha.opacity=40" /></td>
  </tr>
  <tr>
    <td><div align="center">titulo 1 titulo 1 </div></td>
    <td><div align="center">titulo 1 titulo 1 </div></td>
    <td><div align="center">titulo 1 titulo 1 </div></td>
    <td><div align="center">titulo 1 titulo 1 </div></td>
    <td><div align="center">titulo 1 titulo 1 </div></td>
  </tr>
</table>