<table summary="xx" style="width:700px">
<col style="width:10%"/>
<col style="width:30%"/>
<col style="width:40%"/>
<col style="width:20%"/>
<tr><td>alpha</td><th>beta</th><td>gamma</td><th>delta</th></tr>
</table>

alpha	beta	gamma	delta

Column widths should be 70px, 210px, 280px, 140px. Correct in all browsers except for IE's definition of pixel