As a web developer/hacker, I am always searching for the next new thing in CSS, of course, this particular web calendar really impressed me with not a whole lot of code.
I think you can easily apply this to make your web app shine more. (Check out the demo)
I wanted it to be similar to the iPhone Calendar application (or, if you want, to the little calendar on the left bottom corner in iCal). And I also wanted to keep the code as little and sweet as possible (we don’t like maintenance, do we?).