renamer script help..

[Vadkan Jozsef]

The script:
http://pastebin.ca/1804613

but it's not working too well:
http://pastebin.ca/1804612

e.g.: the script makes "arviztur-ukorfurogep" from "árvíztűrő
tükörfúrógép", when it should be: "arvizturo-tukorfurogep"

Has someone a similar script, that works?

thanks:\
ps.: i tried it under lucid, dash is not installed as /bin/sh..