Lightbox image viewer for ipb 2.1.5

[jonnyynnoj]

I need help on how to include lightbox on my Invision power board forum. Im running version 2.1.5.

Where do the javascript bits go? (the ones that are meant to go in the header)

How do add rel="lightbox" to all the images that are posted? (i think i have to use css)

Any help would be much appreciated.

[jscheuer1]

If you cannot edit your page or edit something that will alter the page as it is served to your users, you cannot use this or very many scripts. The part that goes in the head, goes in the head. The rel="lightbox" must be applied to each tag that needs to use it. Css cannot do this, it either has to be hardcoded into the HTML, generated as a part of the HTML (if that's how your page works), or inserted as an attribute via javascript.

How do you ordinarily make changes to your page?