Is there a diff-like utility for SXML documents?

Given two SXML documents, I would like a way to show the differences between them.   I was imagining a tool like the Un*x diff program, except comparing element by element instead of line by line.   Any suggestions will be much appreciated.


-------------------------------------------------------
SF.Net email is Sponsored by the Better Software Conference & EXPO
September 19-22, 2005 * San Francisco, CA * Development Lifecycle Practices
Agile & Plan-Driven Development * Managing Projects & Teams * Testing & QA
Security * Process Improvement & Measurement * http://www.sqe.com/bsce5sf