Hi, I think that, like Steven said, your dropdowns may be a problem. The actual menus are generated completely by javascript and the links in the sub-navigation menus are not physically part of the HTML source. It's actually pretty unnecessary to do that since they can be a part of the source and still act like a dropdown menu regardless using JavaScript. It may mean some changes to your javascript but the gains made definitely outweigh.
It's just as easy to have the links physically in the HTML source and hide them with JavaScript than to have them generated on the fly. (I imagine it'd make things quicker as well since you're not having to create DOM objects all the time since you're just hiding and showing them).
