tables/mozilla/core/col_widths_auto_autoFixPer.html

<table border=1>
 <tr>
  <td bgcolor=red width=200>fooooooooo
  <td bgcolor=green width=200>fooooooooo
  <td bgcolor=orange colspan=2 width=50%>foo foo foo foo
  <td bgcolor=blue width=50%>foo foo foo foo</tr> 
 <tr>
  <td bgcolor=red>fooooooooo
  <td bgcolor=green>fooooooooo
  <td bgcolor=orange>foo foo foo foo
  <td bgcolor=orange>foo foo foo foo
  <td bgcolor=blue>foo foo foo foo 
</table>
<BR>
<table border>
 <tr>
  <td width=100>foo</td>
  <td width=10%>bar</td>
  <td width=10%>zap</td>
 </tr>
</table>