CSS double dropdown issue in IE

Hello all,

I’ve created a site featuring a navigation with double dropdowns. It works fine in every browser, INCLUDING IE, except for one particular dropdown that doesn’t show in IE.

If you go to Security Systems > Manufacturers, you should see three links when you mouse-over Manufacturers. In Safari and Firefox, this dropdown shows fine but not in IE. This is strange because the other secondary dropdowns DO show in IE. Just not this one.

Any ideas?

Thanks!

Chris