Very interesting!
the issue is not with the menu, but the %bar1. Looking at the source, I can tell you have
HTML Code:
height: 8px;
background: #ffffff;
border-top: dashed 1px #ffffff;
in the option ATO->Style & edit HEADER AREA->Horizontal Bar 1: Styling, so the CSS is
HTML Code:
div.horbar1 {
height: 8px;
background: #ffffff;
border-top: dashed 1px #ffffff; }
What is happening is that good old IE is treating the 'background' of the <div> as being INSIDE the border, but not applying the background color to the border itself. The background is transparent so you pick up the color (green in this case) behind it. Then you specified the border dashed color to be white, so you see a dashed line. sigh...MS why do you make things sooo difficult!
Anywy, you can fix it easily by just going to ATO->Style & edit HEADER AREA->Horizontal Bar 1: Styling and changing the
HTML Code:
border-top: dashed 1px #ffffff;
to
HTML Code:
border-top: none;