Before:



<a href="http://www.scotlandsoftware.com/blog/?post=/dev/thistle/hmmm.html">http://www.scotlandsoftware.com/blog/?post=/dev/thistle/hmmm.html</a>



<a href="http://www.scotlandsoftware.com/blog/?cat=/dev/thistle">http://www.scotlandsoftware.com/blog/?cat=/dev/thistle</a>



&nbsp;



After:



<a href="http://www.scotlandsoftware.com/blog/dev.php/dev/thistle/hmmm.html">http://www.scotlandsoftware.com/blog/dev.php/dev/thistle/hmmm.html</a>



<a href="http://www.scotlandsoftware.com/blog/dev.php/dev/thistle">http://www.scotlandsoftware.com/blog/dev.php/dev/thistle</a>



&nbsp;



First attempt at implementation; about 10 minutes' work. Buggy, but working...