[jQuery] Superfish and .htaccess

I've installed and set up Superfish on a Joomla site and it works
great with the exception of 1 issue.

When I'm not using "Search Engine Friendly URLS", it works fine.

When I turn on "Search Engine Friendly URLS" in the Joomla global
settings, and change the htaccess.txt file to .htaccess -- any page
displayed by using the the drop down menu <Industries Served> messes
up the template by not displaying the shadow separating the left/right
column. Which happens to be a background image in a table.

the page is: http://www.calldesign.net/Joomla/

The last menu item under <Industries Served - Pump Selector 2> loads
the same article as the third menu item horizontally <Pump Selector>.
The content in the left menu bar is the same for every page on the
site, so nothing there is bumping the image.

So I'm guessing it's a CSS issue...just don't know how to resolve it.

Thanks Mike