[CSS] Expandable background images, proposal

I propose to add 'expand' value to the list of existing values of the 
'background-repeat' attribute.

background-repeat: expand; is a simple yet powerful way of defining 
complex backgrounds and borders widely used in modern web design.
As an example it will cover almost all cases where rounded corners are 
required.

background-repeat:expand; is defined here:

http://www.terrainformatica.com/wiki/doku.php?id=h-smile:expandable-backgrounds

(Illustrations needed so format of web page is more suitable for this 
particular case)

Please consider this document as an official "background-repeat:expand" 
proposal.

This way of defining background images is extremely simple to implement 
thus is a good chance that it will be accepted uniformly by all major UAs.

-- 
Andrew Fedoniouk.
Terra Informatica Software, Inc.
http://terrainformatica.com