A computing system provided according to an aspect of the present invention contains a server system operable to send a same hierarchical menu to client systems which display the sub-menus of the hierarchical menu in a overlapping style or a cascading style. As a result, the implementation of server systems supporting such client systems may be simplified. According to another aspect, an event handler is also implemented on the server system, to process the events generated by client system displaying menus in both the overlapping style and the cascading style. According to yet another aspect, a server system stores a in-memory representation of a context menu, and thereafter serves requests from different clients for the same hierarchical menu based on such in-memory representation.