DHTML/CSS
Cascading Style Sheets are used to set the appearance of many different aspects of a web page, without setting them in each individual element. Provided below are different stylesheet operations, and their respective options. At the end of the article there will also be a number of different examples.

HTML
Creating HTML Documents, Basic HTML documents are in plain text format and can be created using any text editor.

JavaScript
JavaScript is a object-based programming language for developing client-side interactive applications scripting. Program procedure can be embedded directly into an HTML page. processing can recognize and respond to user events such as mouse clicks, form input, and page navigation.

Understanding Server-Side Manual

ASP (Active Server Pages)
ASP is not really a language in itself, it's an acronym for Active Server Pages, the actual language used to program ASP with is Visual Basic Script or JScript. The biggest drawback of ASP is that it's a proprietary system that is natively used only on Microsoft Internet Information Server (IIS).

PHP
PHP (recursive acronym for "PHP: Hypertext Preprocessor") is a widely-used Open Source general-purpose scripting language that is especially suited for Web development and can be embedded into HTML.