[jQuery] Selecting a span within a cell

[jQuery] Selecting a span within a cell


Given this structure:
<table>
<tr>
<td>
<span><span class="Validator"> *</span>hello</span>
</td>
<td>
<span><input type="checkbox" id="blah"/></span>
</td>
</tr>
</table>
If i only know the ID of the checkbox input, how can I select the span
that has a "Validator" class?