Hi,
I found your thread by searching for a solution for the same problem. Thinking of that, I got the expected results in a simple, stupid, but functional way, since i know shit about PHP. I just passed ‘%alt’ as an attribute to “lightbox” –> rel=”lightbox[%alt]”.
Then, in my posts, i only have to assign the same alt attribute to all images on the same gallery. Okay, i lose any other uses for the “alt attribute”, but i get what i want.
Take a look at my last and third-last posts on my blog: narua.org/blog. It’s in Portuguese, but well, we’re talking about pictures, aren’t we?
Hope it helps you as well.
Paulo.
