Chapter 18. DHTML PROGRAMMING
Dynamic HTML (DHTML) has been around long enough that most browsers support and properly display Web pages based on it. Many browser companies raced to support DHTML because of the active Web pages that it provides. DHTML does its job after the Web page loads onto a user's computer. Before DHTML, the user would have to reload the Web page to see a change such as text color, but DHTML provides such changes inside the user's browser without requiring a page reload. Several of today's common Web page elements, such as buttons that change when the user moves the mouse cursor over them, are possible because of DHTML.
DHTML extends HTML.
You can activate your Web pages with DHTML code.
Elements such as menus and rollover ...