I agree, there is some flakeyness going on with http://www.vagcat.com/

Some users are complaining in their forums about some images not
showing, even if you register.

I also noticed some images are backwards i.e. mirror image but still
very useful.

I could not access a page for 1987 engine parts, but the same page
displayed when I changed the year to 1988.

Hopefully the site authors will fix the glitches.  In the meantime,
it looks like you'll have to be patient, or try IE.

>I've used it some time already, but it stopped working correctrly with
>Firefox. When you use IE for this site it works :-(
>