I’m afraid this goes beyond me… = (
I did a try on loop-search.php file but:

1. I don’t get where to put it (which line, if I want the slider to be shown as the page header)
2. Maybe I did not write it correctly, because I see nothing different

Thanks a lot Elliott, it works!!
Now I’ve to figure out how to put a slider on each category page…hope it won’t be necessary to edit the PHP template…

Thanks for your support!