Det er mig der har sovet :-)
her er den rigtige kode:
onMouseOver="this.style.backgroundColor='black'" onMouseOut="this.style.backgroundColor=''"
Eksempel fra
www.bilgalleri.dk :
<table width="100%" border="0" cellpadding="1" cellspacing="0">
<tr style="cursor: hand;" bgcolor="#FFFFFF"
onClick="URL='html/links.asp?categoriID=2'"
onMouseOver="this.style.backgroundColor='black'"
onMouseOut="this.style.backgroundColor=''">
<td><table width="100%" border="0" cellpadding="0" cellspacing="0" bgcolor="#E0E9EF">
<tr>
<td align="center" valign="middle"><table width="100%" border="0" cellspacing="0" cellpadding="0" class="dnav">
<tr>
<td width="46"><img src="categories/cat2.gif" width="40" height="40" border="0"></td>
<td><a href="html/links.asp?categoriID=2" class="dnav">Styling</a></td>
</tr>
</table></td>
</tr>
</table></td>
</tr>
</table>