I've been trying to use a lightbox as a login for users. If the user successfully logs in, an RJS should be rendered to close the lightbox and update some elements on the page. If the login fails, the lightbox is updated with a login message and forgot password button.
I haven't been able to accomplish this with the Lightbox from Particle Tree because it appears to escape the rendered JavaScript. I'm not so hot with Javascript, so please go easy on me!
I'd recommend using Redbox instead if possible:
http://blog.craigambrose.com/articles/2006/09/22/redbox-release-2
because it comes with handy Rails helpers.
-- fxn
PS: In the current version there's a gotcha related to Firefox: Search for ">= 0" in that page and apply the minor edition explained around in the first occurrence.
I second the suggestion from xavier, but i also think that your problem may not be in the lightbox implementation but in the way you call the remote action. rjs responses are javascript and as such should not be triggered by calls that expect html fragments ( e.g. calls with an :update option)
hope this helps,
Luca