jMenu is a jQuery plugin that enables us to create horizontal navigations with unlimited sub-menus.

Besides jQuery, it also requires jQuery UI and supports all the effects of this library (like fadeIn or slideDown).

jMenu

The markup of the menu is pretty clean as it makes use of nested lists.

The look and feel of the output is set in a CSS file so updating it without touching the JS code is possible.

P.S. The resource page is in French (Google-translated version), however, demos and the JavaScript code is commented in English.

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