Geoffrey Swift's βlog - Blog attempt

Have refactored the XSL code for the podcasts/site updates pages, so that an XPath query can be passed into a generic implementation. This means I can have the blog.php page filter out individual posts for permalinks and by category currently. I'm doing this by manipulating DOM nodes in the XSL before applying it, seems to work alright anyway. This essentially paves the way for making a more fully featured search engine and navigation system. Maybe once it's working and I've run out of things to implement I might have more to say to justify its existence!