Nini you write:
4. A link from an image is not the same as the link that places the image on the page. So it cna be done. If I am not misunderstanding what you want to do.
Well I tried it and it broke the existing link. Back to square one. Let me restate the problem.
I have a 120-pxl wide thumbnail image on one page in a cell. I had put it in the cell by selecting the cell and dragging the thumbnail image name from within the site window. Perfect. Everything was the right size. In Layout, in Preview, in a Browser, perfect. No problem. Gave it a 1-pt border. Looks just as I want it to look.
I now want to link that 120-pxl thumbnail to a larger 400-pxl size version of that image which I have already placed on another page.
So to do this I select the thumbnail and now link it to the larger one. And the original link breaks.
Conceivably I might be able to make each cell containing a thumbnail taller and list under it the file name for the larger one and link that text. That has three problems

1) it will take forever and (2) it will look ugly. (3) To do it I have to increase the space betwen cells which opens the space horizontally, which I don't want, as well as vertically, which I do. And (4) I have no idea if I can insert such a small text box in such a small space.
So I am open to suggestion.
I have one idea. Instead of linking the thumbnail image to the larger image, maybe I can link the cell that contains the thumbnail to the larger image. (I assume Pres-Elect Obama is also seeking alternate solutions to alternate solutions so I don't feel lonely and hopeless. Yet.)