Проверьте это для Solpartmenu:
<dnn:SOLPARTMENU runat="server" ID="dnnHorizontalSolpart" ProviderName="SolpartMenuNavigationProvider"
ClearDefaults="True" MenuBarCssClass="Hmain_dnnmenu_bar" MenuContainerCssClass="Hmain_dnnmenu_container"
MenuItemCssClass="Hmain_dnnmenu_rootitem" MenuItemSelCssClass="Hmain_dnnmenu_itemhoverRoot"
MenuIconCssClass="Hmain_dnnmenu_icon" MenuBreakCssClass="Hmain_dnnmenu_break"
SubMenuCssClass="Hmain_dnnmenu_submenu" SubMenuItemSelectedCssClass="Hmain_dnnmenu_subselected"
CSSNodeSelectedRoot="Hmain_dnnmenu_rootselected" MenuEffectsMouseOverDisplay="None"
Separator="|" SeparatorCssClass="Hmain_dnnmenu_separator" UseArrows="False" UseRootBreadCrumbArrow="False" />
.Hmain_dnnmenu_separator
{
background-color: Transparent;
color: #C55203;
font-family: Arial;
font-size: 11px;
}
.Hmain_dnnmenu_bar
{
cursor: pointer;
cursor: hand;
height: 30px;
background-color: Transparent;
}
.Hmain_dnnmenu_container
{
background-color: Transparent;
}
.Hmain_dnnmenu_rootitem
{
background-color: #DBDBDB;
cursor: pointer;
cursor: hand;
color: #C55203;
font-family: Arial;
font-size: 11px;
_height: 30px;
_padding: 5px;
vertical-align: middle;
text-decoration:underline;
}
.Hmain_dnnmenu_rootitem td
{
font-family: Arial;
font-size: 11px;
_height: 30px;
_padding: 5px;
vertical-align: middle;
}
.Hmain_dnnmenu_itemhoverRoot
{
background-color: #DBDBDB;
color: #C55203;
cursor: pointer;
cursor: hand;
font-family: Arial;
font-size: 11px;
_height: 30px;
_padding: 5px;
text-decoration:underline;
vertical-align: middle;
}
.Hmain_dnnmenu_icon
{
cursor: pointer;
cursor: hand;
}
.Hmain_dnnmenu_submenu
{
background-color: #DBDBDB;
border: solid 1px #B7B7B7;
cursor: pointer;
cursor: hand;
color: #C55203;
font-family: Arial;
font-size: 11px;
text-align: left;
text-decoration:none;
z-index: 1000;
}
.Hmain_dnnmenu_submenu td
{
border-bottom: solid 1px #B7B7B7;
font-family: Arial;
font-size: 11px;
text-align: left;
text-decoration:none;
}
.Hmain_dnnmenu_break
{
font-family: Arial;
font-size: 11px;
}
.Hmain_dnnmenu_rootselected
{
color: #C55203;
cursor: pointer;
cursor: hand;
font-size: 11px;
font-weight: lighter;
font-style: normal;
font-family: Arial;
white-space: nowrap;
vertical-align: middle;
text-decoration: None;
}
.Hmain_dnnmenu_submenu_itemhover
{
background-color: #C55203;
color: #FFFFFF;
font-family: Arial;
font-size: 11px;
}
.Hmain_dnnmenu_subselected
{
background-color: #C55203;
color: #FFFFFF;
font-family: Arial;
font-size: 11px;
}