Creates four different sizes of webpage thunbnails
http://bluga.net/webthumb/
eg.
Small Thumbnail:
http://bluga.net/webthumb/data/b547/...humb_small.jpg
Medium Thumbnail:
http://bluga.net/webthumb/data/b547/...umb_medium.jpg
Medium2 Thumbnail:
http://bluga.net/webthumb/data/b547/...mb_medium2.jpg
Large Thumbnail:
http://bluga.net/webthumb/data/b547/...humb_large.jpg
