Edit problem in Joomla site

Last week I added a image to one page of my site. Now when I first open a page that image is appearing in the background of all the pages. I am using a Rocket Theme and the problem appears to have something to do with Gantry (something I'm not familiar with). To view the problem go here: [login to view URL] You'll notice that each page has a background of a map while the top image is loading. This is what I want to remove. The map should only be on the "locations map" page. please contact me if you have any questions about the project.