This blog post is a reply to this topic on Joomla's forum: http://forum.joomla.org/viewtopic.php?f=642&t=815225 but when I tried to post it there I got a 403 error, that is why I thought that I'll share this information here.

For the last couple of weeks I've been working on the multiple upload functionality that is going to come with the next Hotspots version. I'm about to finish this off, but as usual there are some things that pop up and need rewriting. I've decided that instead of hardcoding the generated thumbnails, I'll add an option for the user where he can define his own thumbnail dimentions.