On 1/19/07, bj <bj at kickasswebdesign.com> wrote: > You might also find this helpful: > http://www.micahcarrick.com/v2/content/view/4/3/ This is actually the link I was referring to! I used this as the base of my calculation algorithm. I had to make some edits, but for the most part, it's great. I used this on my Google Summer of Code meetup site (the first year Google did this was the last year I would be eligible, so I snuck in): http://mwarden.f2o.org/socmeetup/ Specifically: http://mwarden.f2o.org/socmeetup/ray.d.eye.php You can search on my email address (mwarden at gmail.com) to see it work. I had to ask participants to enter their lat/long, because the scope was international and I couldn't find a database for that. The code is quick and dirty, but you can find it here: http://mwarden.f2o.org/socmeetup/thecode.php Thanks for the link, bj. It refreshed my memory about where I had used this. -- Matt Warden Cleveland, OH, USA http://mattwarden.com This email proudly and graciously contributes to entropy.