SlideBar by Cool Focus
SlideBar is a two-level horizontal menu (which can also be used as a single-level vertical menu of buttons). Bars containing second-level links slide out horizontally when the mouse moves over a first-level item. The menu can be aligned to the left or right of the page, and items slide in the appropriate direction. Items react to mouse-hover by fading between colors, and can have gradient fills. Different fonts, styles and colors can be applied to first- and second-level items.