I've got a SVG file that has several parts that I'd like to split apart into separate SVGs. The SVG looks like this:

(It's from the Tera online fansite kit)
As things are layed out nicely in a grid you can probably guess how I want to split this up. I did try to follow the tutorial tips on inkscape.org about "How to do slicing (multiple rectangular export areas)?" But I just got a blank rectangle as a copy, perhaps because it's aimed at cutting a part out of bitmap graphics and this is a vector graphic? I also tried cutting out some elements of the graphic in firebug (firefox extension allowing source manipulation) but things aren't grouped nicely so it would take ages to figure out which parts belong together and I'd still be left with some weird coordinates if I sorted out all of that manually.
Surely there must be an easy way to split this image up as long as the cutout doesn't contain any shape going over the border? Any help with this would be greatly appreciated.
If anyone wants the SVG itself I did upload it to the web, the sourcecode might look a bit weird because it was originally a .ai file.