AddThis

Firefox back button twice issue

We set up AddThis to be loaded after the page load. We have this working fine. However one call AddThis makes is to an sh093.html page (addthis Utility frame). Firefox believes this is a new pages and logs it in its history buffer so that when you press the Back button the current page does not appear to change, then you press Forward and it reloads the sh093.html page. The end result is that any page we have AddThis on requires two Back button clicks to go back and the Forward button then no longer work. I have tested multiple browsers and multiple versions of Firefox and the issue is with all versions of Firefox I have tested (3.6, 8, 10). This may be a Firefox issue, but I still expect AddThis to handle a solution for it in their code. Can you help or comment on this behavior? You can reproduce this at my test pages: http://qawww.thehartford.com/cs/ContentServer?pagename=SandBox/Nicholas/add-this-1

Thank You