... nice idea ...

but in order to show this with details.php / details.html and to provide no further files, I would let produce this table in details.php as "$user_image_list" and show it in details.html with e.g.
<div style="height: 350px; width: 150px; border: 0px; overflow: auto;">
{user_image_list}
</div>
... than no paging, no iframe and no new files are needed ...
... and the user_image_list is showed in a container with scrollbars (maybe as a long list) ...
P.S. this list could also be shown on the user profile page ...