(Some) Nav Menus "Push Out" Following Menus

[angiemel]

http://www.bubbles4sale.com

Got my little icons working only now several of my nav links seem to push the subsequent links down.

Best way to understand is to go there and notice the difference between the good links:
> Organiztions, Tools, What's VAYA, Skincare, B&B, Team Member Training

... and the BAD (pushy) links:
> Home, Motivators, Marketing, Tech/Web Pros, Jewelry


Maybe it's something with the #nav li's or ... something??? Lost on this one, especially since some work fine then others don't. Is it a depth setting... um...