This is a strange one, and have spent hours looking at it, and cant find a solution. Make me think its something dumb and simple I have done.
I have the following page http://bit.ly/haBsGY . (short url to stop google indexing this thread with the website)
Basically, when I mouse over the menu items on Firefox and Chrome, all works fine. But on IE, when I mouse over the menus, and try to select the sub items, then the menu disappears.
I've checked on Firebug, and no warnings are showing.
A JS expert might see the dumb thing I have done straight away.
Thanks in advance.