$gallery->album->getPhotoId($index)

Dear Gallery ppl!

http://www.stock-photography.bz

I am trying to add my shopping cart to my gallery. It works more or less fine by now, allthough I have a small problem. I can add the following line to the inline_albumthumb.footer:

<input type=button value="Add / Remove" onclick=addCart('<?=$gallery->album->getPhotoId($index)?>')>

but I cannot add it to the inline_foto.footer.

This line adds the Add/Remove button below the picture. While adding it to the inline_foto.footer I get the following message on the corresponding output page:

Fatal error: Call to a member function on a non-object in classes/Album.php on line 1063

The header of the inline_foto.footer file says I can use the $gallery->album->getPhotoId($index) variable, but it does not seem to be true in a simple way.

Anyone?
Thank you for your time,
Jan Csernoch
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