[Plugin: NextGEN Gallery] double click to close images

In my picture list when viewing an image I have to press the mouse twice to get the image to close – once to close the image and once to close the background
There is a black background with a whitebar behind the image that needs the second click to close.

It can be seen here
http://thecollector.com.au/wp/?page_id=9&show=gallery

Thanks

http://wordpress.org/extend/plugins/nextgen-gallery/