%SCRIPTURL{"script"}%
http://www.t2.ucsd.edu/twiki2/bin/script
%SCRIPTURL{"viewauth"}%/%WEB%/%TOPIC%
which expands to http://www.t2.ucsd.edu/twiki2/bin/viewauth/TWiki/VarSCRIPTURL2
%SCRIPTURLPATH{"script"}%
instead, as it works with URL rewriting much better