I have a website with alot of pictures as attachment in the posts, but I decided to use lightbox in the future.

However none of my images are <a><img /></a> but instead just <img /> in the source. Every single lightbox needs <a><img /></a> in order to work, and cause I have too much attachments it will take forever to manually add the hyperlinks through post/image edit.

So is it possible to make them appear with their hyperlinks automatically ?