CSS Tables and rowspan/colspan

Why rowspan/colspan is possible only in HTML, not in XML+CSS? I would 
like to see this feature in CSS3 (CSS Advanced Layout is not what I mean):

td[colspan],th[colspan]
{
 table-colspan: attr(colspan);
}

td[rowspan],th[rowspan]
{
 table-rowspan: attr(rowspan);
}

-- 
Freyjkell

Received on Tuesday, 1 April 2008 16:23:26 UTC