application with menu

Hi,

Actually i need to develop a bash script with menu features.
For example a Title should be always there .
under that some menu options will be there..in each menu, submenus will be there.

In order to build the script with menu features , which library is the preferable one in linux?
Where i need to start reading?
My OS is ubuntu 11.10.

Please help me.
Thanks

Maybe these simple examples using ksh93 and the select construct will help you although I'm not sure how it will translate to bash. They should give you some ideas and info anyway.
http://www.unix.com/shell-programming-scripting/176297-menu-using-shell-script-post302596132.html\#post302596132

http://www.unix.com/shell-programming-scripting/176103-trouble-getting-user-input-while-using-case-statement-unix.html\#post302595191