Hi,
You want to put the "bottom" section?
We used "iframe" in the DEMO pages, you can get the source codes by browsing this HTM:
demo.flexiblewebdesign.com/coolmart/index.shtml
If this is what you are looking for, don't use the "iframe" it will destroy your SEO. Instead, you should use CSS
position:fixed; rules to create a "top" or "bottom" fixed panels.
But since this is a custom modification, i can't provide you any further support. Our free support doesn't cover custom modifications.
Regards,
Support