DHTML is short for Dynamic HTML and is used to make web pages. DHTML is not a programing language, but a process or way of thinking that makes dynamic and interactive web pages. DHTML is usually combination of HTML, JavaScript, CSS and HTML DOM. DHTML is an attempt to make static web pages more dynamic or interactive. Up until DHTML was used usual way to make dynamic content was to use a server side scripting languages like ASP or PHP. A Server Side Scripting Language is a script or program that is run on the web server. A web server being the computer that servers the web page to a your web browser. http://www.w3schools.com/Dhtml/default.asphttp://en.wikipedia.org/wiki/Dynamic_HTML

DHTML is a mostly a mix of JavaScript and HTML. It was never very popular due to poor browser support.http://www.yourhtmlsource.com/javascript/dhtmlexplained.html DHTML is used for many of the same things that JavaSript is used for. Usually it will used for rollover buttons, drop-down menus, widgets, games and gadgets.http://en.wikipedia.org/wiki/Dynamic_HTML It is being replaced by AJAX which is basically DHTML with XML.