Gridlock is a 3-level horizontal scrolling menu. Clicking a first level caption displays a second level button-bar of items, which leads to a third-level bar. Each bar can contain an unlimited number of items, with scroll buttons added at either end when needed.
Gridlock supports gradient fills for menu bars and their buttons, and separate sets of style parameters for top-level and lower-level bars. The menu can be automatically centered, and a background image can be positioned behind the menu.