given they are doing it with -engine-rule their shouldn't be a problem (the w3c recommends this method for non standard rules).
...which is funny since I've heard they resist the idea of an engine-based selector rule!
e.g you could have an opacity rule like :
[snip]
and the browser engine should pick up the one it supports best. As the engines work out any bugs with opacity (for example) they will hopefully end up using opacity : 50; and you will end up with something like this, assuming MS sits on their keyboards.
My concern with this whole approach is expecting people to go back and remove the non-standard rules. In the real world we're going to be stuck with the non-standard stuff for a long time to come; particuarly when developers use them without understanding the full situation. Not all developers know the standards as well as the average reader on this list. Plenty learn by copying other CSS, so they might not even know that -moz-opacity *isn't* standard (don't scoff, it happens!). I don't immediately see the benefit to the UA developers using a custom rule... Why not just use the real thing? I can only assume there's something about the process that I'm not aware of. -Ben -- --- <http://weblog.200ok.com.au/> --- The future has arrived; it's just not --- evenly distributed. - William Gibson ******************************************************************* List Guidelines: http://webstandardsgroup.org/mail/guidelines.cfm Unsubscribe: http://webstandardsgroup.org/join/unsubscribe.cfm Help: [EMAIL PROTECTED] *******************************************************************