dhtmlxToolbar - Customizable JavaScript Toolbar
dhtmlxToolbar is a completely customizable, Ajax-enabled JavaScript component which allows you to easily add an attractive horizontal toolbar on a web page. dhtmlxToolbar can load its content from XML so it can be easily changed without reloading. It provides cross-browser compatibility, rich client-side API, and customizable icons (with JavaScript or XML). The toolbar supports several buttons types (image, image with text, button, select box, etc.).