Thank you for your question and I am happy to help you. I understand that the back button does not work as expected in Firefox while looking in smugmug.

In the meantime as a work around, if you right click on the back button, it will list all of the pages that were visited.

Let me see if I can make this more clear. In Smugmug I browse galleries and scroll down a page until I see a gallery I want to look at. I may have scrolled down past several hundred galleries before I select a gallery to look at, so I am quite a ways down. Anyway I select the gallery and it opens and I browse all the photos. When I am finished I go to the top and click the back button. If I am using IE it takes me back to the point where I selected the gallery I looked at. However, in firefox if I click the back button it takes me back to the beginning of the gallery and I have to scroll thru all the galleries again and find where I left off.