I think I shall give up...it just simply doesn't work.
Could you please have a look at my source code of below template file......may be you can see what I might have done wrong.....

www.ayvalikholidayhouse.com/templatej.html

Just to remind you, names of the downloaded and uploaded files are;
galleria.css
jquery.galleria.js
jquery-1.3.2.js

Sorry again