Link to large map charset problems

Hello,

I'm trying this module, from Spain, great module by the way!
The problem is that the link to large map doesn't work when chars like ñ,ç,à,á,è,é, etc. is used.
It's strange, because I can use that kind of chars when I type it on maps.google.com, but not when using this module (maybe the way that the adress is passed to maps.google.com).

Help will be apreciated, thx!