Dynamic HTML (with a capital 'D') is a Microsoft trademarked technology that allows a user to change a Web page display in certain ways on the client side. Much of Dyanmic HTML involves activating various scripts that change the composition or behavior of the page in question.

In this exercise page, each menu selection contains an event that calls a JavaScript function.

The World Wide Web Consortium (W3C) chose a standard closer to Microsoft's vision of DHTML than Netscape's. A large part of this had to do with the fact that Microsoft DHTML relied on existing technology and markups (e.g., scripts and style sheets) while Netscape dynamic HTML was based on their proprietary LAYER markup.