I have a problem with a RADTimePicker, when I click the icon 'open time view popup' the popup menu has no styling, I get a list of times displayed, but the background is transparent
<telerik:RadTimePicker ID="RadTimePicker1" runat="server" Skin="Sunset"
Culture="English (United Kingdom)">
<Calendar UseRowHeadersAsSelectors="False" UseColumnHeadersAsSelectors="False" ViewSelectorText="x" runat="server"></Calendar>
<TimeView CellSpacing="-1" Culture="English (United Kingdom)" BorderStyle="Solid" runat="server"></TimeView>
<TimePopupButton CssClass="" ImageUrl="" HoverImageUrl=""></TimePopupButton>
<DatePopupButton Visible="False" CssClass="" ImageUrl="" HoverImageUrl=""></DatePopupButton>
<DateInput Width="" LabelCssClass="" runat="server"></DateInput>
</telerik:RadTimePicker>