Crash/ kicked out of website during battles.

I have a problem with the battle viewing.  When I attack another player or camp I am watching to see how it goes.  During the battles about 25% of the time I am kicked out of the webpage and need to either re-log in or just refresh the page. Either way the battle is over when I get back and I need to watch replays to see how it went.  The crash also happens when watching replays so sometimes it is very frustrating.

Operating system is windows 8, on a high speed DSL, graphics card is good.