Sub-Menu in Create Pro not showing up on my iPhone

Hi, The drop down menu on our site is not showing up on my iPhone 4. I see the main menu items, but the drop down ones are not there. They are actually there, but you can't see them. You can guess where they are and click on them, but you can't see them at all. Only the main menu items. When I shrink my browser screen down on my laptop to the smallest size I see them and they work just fine. It is only on my smartphone I'm having this problem. The site in question is; www.roguehealth.com Any help is appreciated. Thanks, Chris