The open name for HTML is Hypertext Markup Language. It is the native language of browsers starting from Mozaik to MS-Explorer 6. The aim of HTML is to make it possible to store, transfer and show the documents and graphics over Internet. Hypertext stands for the text piece than has hyperlink to other web pages at the Internet (or Intranet or Extranet).
To show text by means of HTML is satisfactory for most of the times, but for more interactive web pages we need more then HTML. We need programming for interaction and animation.
Web based programming is the best example of Client/Server achitecture. You may have some partsof programs stored on server side which means hosting computer or some parts can be on client side computers.
Java scripting is the most widely accepted programming language accepted today. .NET languages (VB, c# and others)will be the most wide spread server side programming languages.
This page has a java script to turn the page color to red.
OBSERVE the Code of this page.
Now let's link to another page that prompts and alerts to you.