Keep Track Calendar

I have finally finished my calendar script. Look, over there to the right. There it is in it's full working glory.

Basically on the latest page it shows the latest months calendar. The grey box indicates the current date. Then there are links to all the posts in that month. The archive gallery shows the calendar from that specific month. Obvious really

I have put the PHP code for the calendar in the Web Development section, under Source Code, suprisingly enough. However at the moment I'm trying to decide on the best way of presenting raw code like this.

hope it all works. If you find any errors or suggestions from improvement, please contact me. Thanks.