<tr>
<td><img src='aa.gif' onmouseover='document.all("test").src="c.gif"'></td>
</tr>
<img src='aa.gif' id=test>
<td><img src='aa.gif' onmouseover='document.all("test").src="c.gif"'></td>
</tr>
<img src='aa.gif' id=test>
<td><img src='a.gif' id=test></td>
<td onmouseover="t.innerText='hello!'" onmouseout="t.innerText='hello??'">come on</td>
<td id=t bgcolor=#f2f2f2>hello??</td>
</table>