Personally, I have no idea what you are trying to do, or where 'tiling' comes into it. By "boxes" do you mean "cells"?
The only thing I can think of is that you are trying to create a page (or part of a page) of thumnails (like a contact sheet) which link to another page containing the full size image of the thumbnail picture? Is that the case, or is it something completely different?
Are you using a WYSIWYG web creation package or are you trying to hand code the site?