struts presentation of several grouped list request

Hello, i have to develop a jsp where i must display several rows which are grouped in three level i use hibernate for database persistence any one has an example how develop this kind of grouped list and display them in jsp page Regards Marc

popout in struts

Hello, i'm new in this list, i'm new j2ee developer i have some question related to interfacing struts (jsp) with javascript i have a link in the jsp page once the user click on this link, i wanna show a pop out (i already made the jsp page which will be dispalyed in this popout) so the pb is , how