[Plugin: Photospace Gallery] How to get rid of numbers added to URL in a slideshow?

I have a gallery setup on a site. When loading the page then 4 images cycle through. Each timt the image changes, the URL changes to (a #1, #2, #3 is automatically added at the end).

Now the problem is that because of that I cant use the back button. All it does is cycle back through the images. It doesn’t go back to the last page.

How can I change that. I hope there is a way to change this behavior.

http://wordpress.org/extend/plugins/photospace/