Solution - 1

Use wp_list_pages or wp_nav_menu to control what is displayed. See: http://codex.wordpress.org/Function_Reference/wp_list_pages and http://codex.wordpress.org/Function_Reference/wp_nav_menu Each of them generates classes such as .current_page_item which you can use to control various levels.

Solution - 2

I have used the first plugin on this page before to show an according style menu and it was very easy to configure. I believe you could place the menu anywhere with a shortcode. The other two plugins are interesting and come from the same developer. [[LINK href="http://www.designchemical.com/blog/index.php/wordpress-plugins/choosing-a-vertical-menu-wordpress-plugin-for-your-site/"]]vertical menu plugins[[/LINK]]

Solution - 3

You want something like this: [[LINK href="http://jqueryui.com/demos/accordion/"]]http://jqueryui.com/demos/accordion/[[/LINK]] You can use it directly in your theme. If you want more info ask.

Solution - 4

i am not sure what you are asking for but have a look in this plugin.. http://wordpress.org/extend/plugins/thethe-tabs-and-accordions/