how to do the following simple work in GWT

a page divide into two side, the left hand side is a menu, click on a
menu will cause the right hand side show the page correspondingly.
example:
menu1
--submenu 1.1
menu2
menu3

if click on menu 1, the right hand side will show panel 1
if click on menu 2, the right hand side will show panel 2

--
You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group.
To post to this group, send email to google-web-toolkit@googlegroups.com.
To unsubscribe from this group, send email to google-web-toolkit+unsubscribe@googlegroups.com.
For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.