On Monday 2008-06-09 19:23 -0700, Andrew Fedoniouk wrote:

Sorry, but that was written by somebody who doesn't understand how HTML table width calculation works. It's poorly defined enough that I removed support for it from Mozilla (which I believe was the only browser to support it). (And the way percentages on tables work is really halfway between what's described in the spec as percentage and what's described in the spec as proportional, since they are relative to the actual size of the table, not the space available for it. And percentages will even flex to other amounts when all columns have percentage widths.)

It also only defines behavior for widths, and not for margins or heights.

It also doesn't define the effect of those proportional units on intrinsic width calculation, what their priority is relative to other specifications (since the column's width can be specified on the column or on any cell), or how they work when column-spanning cells are present. (And I'm not saying that's an exhaustive list of what's missing; it's just what I can think of right now.)