404 document doesn't work for subdirectories
The issue is that the link to the css and images generated by head.wmi is relative to the subdir that wml expects to find the file in. That works for files that aren't aliased from other locations (like the normal website); but doesn't work for files that will be served from different parts of the directory structure.
Just changing the paths to always start with a / in our directory structure would solve this for us; but mirrors that might not have our website start in their root would break. I'm not sure what the solution is here.
To see what I mean, https://www.torproject.org/faq/faq