Please have a look at this website first: Baby Blog and Resource Centre - Hello Baby Online Nursery shop, London UK

You will see on FF and Chrome the navigation is working fine but on IE navigation tabs on top are jumping ..... I think hover position is not working properly....

I really tried my best to find out the solution to fix it for IE but failed. What is actually going on?

Please help. Im working on this for so many days but not getting any result. But frustrated by now. Can you advice what really is happening on IE in this case?