%SCRIPTURL{"script"}%
http://ftp.osipos.com.au/twiki/bin/script
%SCRIPTURL{"viewauth"}%/%WEB%/%TOPIC% which expands to http://ftp.osipos.com.au/twiki/bin/viewauth/TWiki/VarSCRIPTURL2
%SCRIPTURLPATH{"script"}% instead, as it works with URL rewriting much better