As always, only use this code if the browser you’re designing for supports image manipulation via JavaScript (that is, Netscape 3 or later and Internet Explorer 4 or later).

Thankfully, using JavaScript to create this effect isn’t that difficult. In this article, I’m going to show you how to write the JavaScript code for a rollover, step by step.

JavaScript is a programming language used to make websites interactive and dynamic. Features such as buttons that respond to ...