Is document() support in Chrome and Firefox on the roadmap? My stylesheets need it.

I have a set of existing stylesheets used within the Xopus editing process which display the target text of hyperlinks via XSLT functions which use document() functions and match to <xsl:key> definitions. The stylesheets are complex and extensive, and they work.

At least, they work in Xopus under IE. Not in Chrome or Firefox.

The Xopus 5.4 documentation has a simple XInclude example which suggests that I could re-implement these stylesheets using Xincludes and xpointers, but I'm not having much luck.

I'm either after a commitment from Xopus to support document() in these other browsers, or a demonstrable example of how to implement my requirement without using document() and xsl:key.