Yep, your #container
DIV has overflow: hidden
applied and that’s what cuts the top part of the sub menus. Just edit this rule and remove the declaration:
#container {
max-width: 1140px;
margin: 0 auto;
margin-top: 15px;
padding: 0px;
background-color: #fff;
overflow: hidden;
}
in:
http://temp07.cww-temp.nl/sysfiles/skins/Rsp-MP04/css/style.css
I guess it has been added for clearing any floats inside but you already have a clearer div inside it anyway <div class="clear"></div>
(and you could use other ways for clearing floats, too, if needed) so removing the overflow declaration shouldn’t hurt anything.
Cheers!