You could position the dropdowns better by changing line 245 in your desktop_2.css
#menu ul{
background: linear-gradient(#444444, #111111) repeat scroll 0 0 rgba(0, 0, 0, 0);
border-radius: 3px 3px 3px 3px;
box-shadow: 0 -1px 0 rgba(255, 255, 255, 0.3);
left: 0;
margin: 40px 0 0;
opacity: 0;
position: absolute;
top: 60px;
transition: all 0.2s ease-in-out 0s;
visibility: hidden;
z-index: 1;
}
I'll look more in a bit.