There are several ways to implement Litebox. You can use the traditional thumbnail approach:
To expand on the thumbnail approach you could have a group, or album of thumbnails:
You could also revert to a simple text anchor:
Then there is the option of group/album text links:
And finally, something I added to the mix late last night - a single text-based link that triggers a group/album:
The last example could be adapted so that you show a single thumbnail as your 'trigger' instead of the more traditional text link. If you're interested in how all of the above were achieved, you could either view the source code of this page, or tax your brain by figuring each one out yourself. I'll give you a hint for how to achieve the single link/multiple pictures though - display: none;
There is, however, one fairly major problem with Lightbox, or the lighter, Litebox - neither validate according to the W3C's rules for both HTML/XHTML and CSS. This is something that I am looking into myself, with the outcome hopefully being a valid version.