TU/e search engine: V-spaces

The Technische Universiteit Eindhoven has a new search engine for their web site (which is a good thing, the old one was so ineffective I used to always use google with site:tue.nl), called V-spaces. It seems reasonably useful, so I wanted to make a Firefox keyword for it. Problem: the engine only works with http POST requests, not GET. According to this post, that should already be supported, but I don't see how. Anyway, I found a page with a different method: just use a javascript program, similar to my telephone guide keyword. The result is this link: V-spaces. Use it like this:

1. Right-click the link.
2. Select Bookmark this link...
3. Choose a suitable folder to put the link into.
4. In the Bookmarks menu in your menu bar, find the link V-spaces that you've just created.
5. Right click it.
6. Select Properties.
7. In the Keyword field, enter something like vsp.

Now whenever you want to search for, say, technology, enter
vsp technology
into your Firefox address bar (where you'd normally type www.tue.nl), and Firefox will go to the right V-spaces page.