I've tried putting valign="top" as attribute of <td>
but in vain.
<tr>
<td>
<span class="validationInline">*</span>
Security Code:
</td>
<td valign="top">
<input type="text" />
<iframe scrolling="no" height="21px" frameborder="0" width="62px" marginheight="0" marginwidth="0" src="http://google.com"></iframe>
</td>
</tr>
It seems that <input>
aligns itself to the buttom,while <iframe>
to the top.