Hi everyone.
I'd like to make a plugin that will create different versions of images when they're uploaded.
For example:
If I upload an image that is 1920x1200, the plugin would automatically save a 1680x1050 version, a 1280x720 version, etc.
I'm going to try to learn how to make plugins but I haven't made one for zenphoto before so I could really use any help possible.
Thanks in advance.

Actually I've done it myself by modifying the viewer_size_image plugin. Thanks for that Stephen.

Oh by the way Stephen, the cookie time format is wrong so it only lasts for the session. To fix it, change line 128 from:
`document.cookie='viewer_size_image_saved='+$(obj).attr('value')+'; expires=<?php echo date('Y-m-d H:i', time()+COOKIE_PESISTENCE); ?>; path=<?php echo $cookiepath ?>';`
To:
`document.cookie='viewer_size_image_saved='+$(obj).attr('value')+'; expires=<?php echo date('D, j M Y H:i', time()+36000000); ?> UTC; path=<?php echo $cookiepath ?>';`

`COOKIE_PESISTENCE` should be normally be `5184000`. Maybe you have changed that define?

Oh I just chose to edit that but that wasn't the problem, the problem was the date format.
It should be `D, j M Y H:i` instead of `Y-m-d H:i`