<table summary="xx" style="width:700px">
<col style="width:100px"/>
<col style="width:200px"/>
<col style="width:300px"/>
<col style="width:100px"/>
<tr><td>alpha</td><th>beta</th><td>gamma</td><th>delta</th></tr>
</table>

alpha	beta	gamma	delta

Column widths should be 100px, 200px, 300px, 100px. Correct in all browsers except for IE's definition of pixel