iframe with Safari browser

We've developed a site that hooks into a third-party store solution and are
using frames to bring in the store, specially iframe. It works fine on Mac
and Windows and in all browsers with the exception of Safari (latest
edition) on the Mac. Most of the framed pages display just fine, but some
of the pages display blank space where the framed content should be.

For example, this link opens up a page with a frame:

http://www.launchpadonline.com/Sales...ple_brand.html

This main page displays fine in Safari. However, the linked images at the
top for the iPods and MacBooks do not all work. I am using the same method
to pull in the data. Anyone have an insight as to why some pull the data
into the frame correctly and some leave the frame blank.

Thanks,

Ilene