Remove Header Image From Post/Gallery

I am using the F8 Static theme and want to remove the header image from all pages in the gallery. (The plugin is “WP Gallery”.)

For example this is the post: http://www.antonypeyton.com/2012/04/03/photos-of-london-april-2012/

The header for that is OK and can remain.

But when a person enters the gallery (containing 33 pages) I want to remove the header, but keep the nav bar. For example, this first page would ideally have no header: http://www.antonypeyton.com/2012/04/03/photos-of-london-april-2012/bromptoncemeterycollage/

Is that possible?

Thanks for your help.