I want when pointing from one menu to another menu, the menu looked like a sliding board.
i can show that after downloaded at apycom.com,
beside that, i have a jquery-ui tabs in input.php.
the problem comes after i have included that menubar.
menubar's sliding effect not show and also the tabs..
why it happens?
From what I understand of your question, this is not possible in pure CSS. However, it's possible with the addition of javascript. Check out the "accordion" effect on google.
jQuery has a nice implementation.