impossible to link to picasa slideshow

Hello,

I use Gmapfp in my personnal web site and I enjoy it. But today, I have a customer who wants to link the points to picasa web album in order to watch a slideshow. I wrote the url in the right place (where you can enter your article or an url). But when I click on the points registered on the map, nothing happens.

Is anybody able to help me to understand what I did wrong ?

Thanks a lot