How can I make a cross reference from one entry to another entry in the same ELOG logbook?

Have a look at http://midas.psi.ch/elog/userguide.html, under the section "Adding stuff to a logbook". Basically you can write elog:<id>. At the moment, this works however only in the "plain" or "ELCode" encoding. For HTML encoding, I will add this functionality soon.

How do I proceed to have spell check in fck editor under linux / firefox ?

Thank you! The HTML functionality will be v. useful

We use ELOG inside a local network, but we want to allow access also from outside the firewall.

The suggested solution from Elog Admin Guide worked fine until version ELOG V2.6.5-1844 (essentially without FCK Editor):

ssh -L 1234:your.server.name:8080 your.firewall.name
firefox http://localhost:1234/

Howerver, since the update to ELOG V2.7.1-2002 the FCK Editor uses absolute links to insert images.

An image uploaded from the local network will have an address like:

http://your.server.name:8080/logbookname/080207_101110/Picture.jpg

while the same image uploaded through the firewall tunnel will have a link like:

http://localhost:1234/logbookname/080207_101110/Picture.jpg

Obviously images uploaded from outside are not visible from inside and vice versa.

Is it possible to convince FCK Editor to use relative links?

PS
ELOG is great!!

one question regard Options: For e. g. I am using the following command: Options Categories = NT, 2000, XP, Linux
Now I would like to delete the entry NT. But that would cause, that NT is no longer available in the search function. So I wonder if there is a way to deactivate an attribute?

A deactivate option is not implemented. The only possibility you have is to enter the search string drictly in the url, like

http://<host>/<logbook>/?Category=NT