Robert O'Callahan wrote:

Yes.

Here is a screenshot if you wish: http://terrainformatica.com/htmlayout/images/css-menus.png

And here its style system:

/* top level menu band */ menu { flow:horizontal; /* top level menu is a horizontal bar */ width:max-intrinsic; padding-right:1*; /* spring on the right - all items sticked to the left */ }

menu li { display: block; /* menu items are blocks*/ position:relative; /* to make our popup relative to this one */ height:1*; /* all items in the menu bar have the same height */ padding:2px 4px; }

menu li:hover { background-color:navy; color:white; }

menu menu { flow: vertical; /* popup menus are vertically replaced */ min-width:100%; /* at least it is caption wide */ position:absolute; /* out of normal flow */ display:none; /* non-visible normally */ }

menu > li:hover > menu { display: block; /* now it is visible */ }