celgins - 3:11 am on Dec 29, 2009 (gmt 0)

I'm not sure if it's considered "cloaking," and I don't employ this on my sites, but could you possibly reference your images (<img>) on the page and hide them?

For example, along with your anchor code, also include:

<img src="images/image_url.jpg" style="visibility:hidden;" alt="my image"> <a href="" onclick="lightbox_javascript('images/image_url.jpg')>

Probably not even considered cloaking since you are showing the image on the page through the anchor javascript. But it does create twice the code.