Sometimes a web site has a large amount of links. And if you place all of them into your dhtml menu submenus will be very long.
DHTML Scroll Menu offers the trick - when the top items or submenu items are larger than the visible area of the page the sub menu will be automatically decreased.
There is no need to use scrollbars or something like that to see all the sub menu items - just move your mouse to the bottom of a sub menu
and it will be scrolled automatically!