Developing a tree menu which has one level submenu

Hi,
I am developing an internet based application using JSP. In the application I want to display a tree menu on the left side of screen. Every menu in the tree can contain one or more submenus. When the user clicks on a particular tree menu item ( '+' sign on particular tree menu item), the sub menu appears and when submenu item is clicked, then my application will load the corresponding JSP page on the right hand side of the screen. I was wondering how to implement this menu functionality using JSP.
regards,
Jatin.

You will have to use JavaScript to display/hide menus. Look up Dynamic Drive's webpage which has a lot of dynamic content like this.

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