WebPlus X6: Fluid None Position Footer

I need a ‘fluid sticky footer’ that is not absolute positional – I use a third party vendor MSL Realtor property display service for realtors and residential builders – the product uses a Header and Footer Wrapper from the clients website to wrap around the search display results so as to give the impression that the results are integrated into the site when they are actually a sub-domain of the vendors site. Normally I uses tables and have no problem – However, this client wants fluid headers and footers – headers are not a problem because the absolute position doesn’t affect the search results displayed – however, the footers are a problem because the results have no set height, the results may display one property or up to a maximum that is optionally set – default is 10 and can go up to 100’s.

Here is a link to the demo site
http://www.edpdemo.com/edanbra

The only link that is active is the one to ‘Our Inventory’ midway of the Home page. The top part of the ‘Our Inventory’ page down to the middle Menu Bar will be used as the header – the bottom part of the page beginning with the blue bar will be used as the footer.
Any Ideas – This may be clear as mud.