Menu no visible in some versions of IE

When I look the site in IE8 the menu bar is visible.
If I check it in IE8 with compatibility mode on it hides behind the slider images, you can see the menu when the image changes.

Works fine in chrome and firefox.

How can this be solved?

URL is www.vialogos.be
Same happens with the demo http://inkthemes.com/wptheme/roadfighter-photography/?demo_redirect=no

 

Hello,
Paste the code given below in Custom CSS section
(Appearance -> Theme Options -> Styling Options -> Custom CSS) of your dashboard.

Code:

#menu .ddsmoothmenu {
z-index: 10000 !important;
}

Thanks & Regards
Pramod