I have found the documentation for the radMenu CSS tags at http://www.telerik.com/help/aspnet-ajax/menu_appearancecssselectors.html. This documentation seems incomplete. I have looked in your latest RadControlExamples - Menu - Examples - Default - styles.css file and am finding tags like ".support-firstColumn", ".community-firstColumn" that are not listed on this web page. Are these menu tags and if so, is there an up-to-date listing of all the tags and a description of what they do?