%SCRIPTURL{"script"}%
http://cds.unistra.fr/twikiDCA/bin/script
%SCRIPTURL{"viewauth"}%/%WEB%/%TOPIC%
which expands to http://cds.unistra.fr/twikiDCA/bin/viewauth/TWiki/VarSCRIPTURL2
%SCRIPTURLPATH{"script"}%
instead, as it works with URL rewriting much better