I'm impressed. I told him what I wanted it to do last night, and he stayed up until about 3 in the morning figuring it out. Had a note on my desk from him when I woke up. Checked his code and all looks good.
There is an avatar size available in the section of 80x80. Also, you can link to the site with your avatar specs and it will fill in the custom size. So, if your avatar size is 100x100, you can link to it like this:
http://cranno.com?w=100&h=100