Best way to handle multiple photo's in asp.net

[confused]

Hello Everyone... here is a technical post so please pardon me if I seem confused in trying to explain this..

Working on a new asp.net site which is using a mod-rewrite for the urls. Pages allow customers to upload up to 6 photo's of a product (one large and them 5 small thumbnails). Everything works fine but afraid of a possible problem... when click on link to switch photo (from large to thumbnail, w/in the same page) URL switches to the?id=#*$!x.

Do you think this may cause a duplicate content as now there is two url's to view the same listings.. or should we try to use a javascript to switch photo's?

[tomasz]

You should not have a problem with duplicate content if you use linkbotton or imagebutton (Google does not follows javascript) I have several pages with 16 pictures and use thumbmails as imagebuttons. Do not use hyperlink, G will follow it,