This script uses the onMouseOver command with buttons. The first & second button show text. but the third button also has a link. IE & NS6+
The JavaScript Source: Text Effects: Menu Text
Simply click inside the window below, use your cursor to highlight the script, and copy (type Control-c or Apple-c) the script into a new file in your text editor (such as Note Pad or Simple Text) and save (Control-s or Command-s). The script is yours!!!