IFrames/ASPXPage/IE7/SecondPost

I posted this earlier and thought maybe if I provided a link to the site
for others to try, maybe they can give a solution to my problem. After
selecting criteria from the combo boxe(s) all the records are rendered
to the page that gets displayed in the IFrame. If I use FF or NS, then
only the result of the query is returned and it is correct. Goto
http://www.tilt-up.org/build/photo_db.htm, select IL from the State
combo, then click submit. Try it with FF or NS and you will see what I
should get back for results. Anyone have any ideas why?

TIA